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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * ipl/reipl/dump support for Linux on s390.
4 *
5 * Copyright IBM Corp. 2005, 2012
6 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
7 * Heiko Carstens <heiko.carstens@de.ibm.com>
8 * Volker Sameske <sameske@de.ibm.com>
9 */
10
11#include <linux/types.h>
12#include <linux/export.h>
13#include <linux/init.h>
14#include <linux/device.h>
15#include <linux/delay.h>
16#include <linux/reboot.h>
17#include <linux/ctype.h>
18#include <linux/fs.h>
19#include <linux/gfp.h>
20#include <linux/crash_dump.h>
21#include <linux/debug_locks.h>
22#include <asm/diag.h>
23#include <asm/ipl.h>
24#include <asm/smp.h>
25#include <asm/setup.h>
26#include <asm/cpcmd.h>
27#include <asm/ebcdic.h>
28#include <asm/sclp.h>
29#include <asm/checksum.h>
30#include <asm/debug.h>
31#include <asm/os_info.h>
32#include <asm/sections.h>
33#include <asm/boot_data.h>
34#include "entry.h"
35
36#define IPL_PARM_BLOCK_VERSION 0
37
38#define IPL_UNKNOWN_STR "unknown"
39#define IPL_CCW_STR "ccw"
40#define IPL_FCP_STR "fcp"
41#define IPL_FCP_DUMP_STR "fcp_dump"
42#define IPL_NSS_STR "nss"
43
44#define DUMP_CCW_STR "ccw"
45#define DUMP_FCP_STR "fcp"
46#define DUMP_NONE_STR "none"
47
48/*
49 * Four shutdown trigger types are supported:
50 * - panic
51 * - halt
52 * - power off
53 * - reipl
54 * - restart
55 */
56#define ON_PANIC_STR "on_panic"
57#define ON_HALT_STR "on_halt"
58#define ON_POFF_STR "on_poff"
59#define ON_REIPL_STR "on_reboot"
60#define ON_RESTART_STR "on_restart"
61
62struct shutdown_action;
63struct shutdown_trigger {
64 char *name;
65 struct shutdown_action *action;
66};
67
68/*
69 * The following shutdown action types are supported:
70 */
71#define SHUTDOWN_ACTION_IPL_STR "ipl"
72#define SHUTDOWN_ACTION_REIPL_STR "reipl"
73#define SHUTDOWN_ACTION_DUMP_STR "dump"
74#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd"
75#define SHUTDOWN_ACTION_STOP_STR "stop"
76#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl"
77
78struct shutdown_action {
79 char *name;
80 void (*fn) (struct shutdown_trigger *trigger);
81 int (*init) (void);
82 int init_rc;
83};
84
85static char *ipl_type_str(enum ipl_type type)
86{
87 switch (type) {
88 case IPL_TYPE_CCW:
89 return IPL_CCW_STR;
90 case IPL_TYPE_FCP:
91 return IPL_FCP_STR;
92 case IPL_TYPE_FCP_DUMP:
93 return IPL_FCP_DUMP_STR;
94 case IPL_TYPE_NSS:
95 return IPL_NSS_STR;
96 case IPL_TYPE_UNKNOWN:
97 default:
98 return IPL_UNKNOWN_STR;
99 }
100}
101
102enum dump_type {
103 DUMP_TYPE_NONE = 1,
104 DUMP_TYPE_CCW = 2,
105 DUMP_TYPE_FCP = 4,
106};
107
108static char *dump_type_str(enum dump_type type)
109{
110 switch (type) {
111 case DUMP_TYPE_NONE:
112 return DUMP_NONE_STR;
113 case DUMP_TYPE_CCW:
114 return DUMP_CCW_STR;
115 case DUMP_TYPE_FCP:
116 return DUMP_FCP_STR;
117 default:
118 return NULL;
119 }
120}
121
122int __bootdata_preserved(ipl_block_valid);
123struct ipl_parameter_block __bootdata_preserved(ipl_block);
124int __bootdata_preserved(ipl_secure_flag);
125
126unsigned long __bootdata_preserved(ipl_cert_list_addr);
127unsigned long __bootdata_preserved(ipl_cert_list_size);
128
129unsigned long __bootdata(early_ipl_comp_list_addr);
130unsigned long __bootdata(early_ipl_comp_list_size);
131
132static int reipl_capabilities = IPL_TYPE_UNKNOWN;
133
134static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
135static struct ipl_parameter_block *reipl_block_fcp;
136static struct ipl_parameter_block *reipl_block_ccw;
137static struct ipl_parameter_block *reipl_block_nss;
138static struct ipl_parameter_block *reipl_block_actual;
139
140static int dump_capabilities = DUMP_TYPE_NONE;
141static enum dump_type dump_type = DUMP_TYPE_NONE;
142static struct ipl_parameter_block *dump_block_fcp;
143static struct ipl_parameter_block *dump_block_ccw;
144
145static struct sclp_ipl_info sclp_ipl_info;
146
147static inline int __diag308(unsigned long subcode, void *addr)
148{
149 register unsigned long _addr asm("0") = (unsigned long) addr;
150 register unsigned long _rc asm("1") = 0;
151
152 asm volatile(
153 " diag %0,%2,0x308\n"
154 "0: nopr %%r7\n"
155 EX_TABLE(0b,0b)
156 : "+d" (_addr), "+d" (_rc)
157 : "d" (subcode) : "cc", "memory");
158 return _rc;
159}
160
161int diag308(unsigned long subcode, void *addr)
162{
163 if (IS_ENABLED(CONFIG_KASAN))
164 __arch_local_irq_stosm(0x04); /* enable DAT */
165 diag_stat_inc(DIAG_STAT_X308);
166 return __diag308(subcode, addr);
167}
168EXPORT_SYMBOL_GPL(diag308);
169
170/* SYSFS */
171
172#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \
173static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
174 struct kobj_attribute *attr, \
175 char *page) \
176{ \
177 return snprintf(page, PAGE_SIZE, _format, ##args); \
178}
179
180#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \
181static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
182 struct kobj_attribute *attr, \
183 const char *buf, size_t len) \
184{ \
185 unsigned long long ssid, devno; \
186 \
187 if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \
188 return -EINVAL; \
189 \
190 if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \
191 return -EINVAL; \
192 \
193 _ipl_blk.ssid = ssid; \
194 _ipl_blk.devno = devno; \
195 return len; \
196}
197
198#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \
199IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \
200 _ipl_blk.ssid, _ipl_blk.devno); \
201IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \
202static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
203 __ATTR(_name, (S_IRUGO | S_IWUSR), \
204 sys_##_prefix##_##_name##_show, \
205 sys_##_prefix##_##_name##_store) \
206
207#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
208IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
209static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
210 __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL)
211
212#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
213IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
214static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
215 struct kobj_attribute *attr, \
216 const char *buf, size_t len) \
217{ \
218 unsigned long long value; \
219 if (sscanf(buf, _fmt_in, &value) != 1) \
220 return -EINVAL; \
221 _value = value; \
222 return len; \
223} \
224static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
225 __ATTR(_name,(S_IRUGO | S_IWUSR), \
226 sys_##_prefix##_##_name##_show, \
227 sys_##_prefix##_##_name##_store)
228
229#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
230IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
231static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
232 struct kobj_attribute *attr, \
233 const char *buf, size_t len) \
234{ \
235 strncpy(_value, buf, sizeof(_value) - 1); \
236 strim(_value); \
237 return len; \
238} \
239static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
240 __ATTR(_name,(S_IRUGO | S_IWUSR), \
241 sys_##_prefix##_##_name##_show, \
242 sys_##_prefix##_##_name##_store)
243
244/*
245 * ipl section
246 */
247
248static __init enum ipl_type get_ipl_type(void)
249{
250 if (!ipl_block_valid)
251 return IPL_TYPE_UNKNOWN;
252
253 switch (ipl_block.pb0_hdr.pbt) {
254 case IPL_PBT_CCW:
255 return IPL_TYPE_CCW;
256 case IPL_PBT_FCP:
257 if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP)
258 return IPL_TYPE_FCP_DUMP;
259 else
260 return IPL_TYPE_FCP;
261 }
262 return IPL_TYPE_UNKNOWN;
263}
264
265struct ipl_info ipl_info;
266EXPORT_SYMBOL_GPL(ipl_info);
267
268static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr,
269 char *page)
270{
271 return sprintf(page, "%s\n", ipl_type_str(ipl_info.type));
272}
273
274static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
275
276static ssize_t ipl_secure_show(struct kobject *kobj,
277 struct kobj_attribute *attr, char *page)
278{
279 return sprintf(page, "%i\n", !!ipl_secure_flag);
280}
281
282static struct kobj_attribute sys_ipl_secure_attr =
283 __ATTR(secure, 0444, ipl_secure_show, NULL);
284
285static ssize_t ipl_has_secure_show(struct kobject *kobj,
286 struct kobj_attribute *attr, char *page)
287{
288 return sprintf(page, "%i\n", !!sclp.has_sipl);
289}
290
291static struct kobj_attribute sys_ipl_has_secure_attr =
292 __ATTR(has_secure, 0444, ipl_has_secure_show, NULL);
293
294static ssize_t ipl_vm_parm_show(struct kobject *kobj,
295 struct kobj_attribute *attr, char *page)
296{
297 char parm[DIAG308_VMPARM_SIZE + 1] = {};
298
299 if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW))
300 ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block);
301 return sprintf(page, "%s\n", parm);
302}
303
304static struct kobj_attribute sys_ipl_vm_parm_attr =
305 __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL);
306
307static ssize_t sys_ipl_device_show(struct kobject *kobj,
308 struct kobj_attribute *attr, char *page)
309{
310 switch (ipl_info.type) {
311 case IPL_TYPE_CCW:
312 return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid,
313 ipl_block.ccw.devno);
314 case IPL_TYPE_FCP:
315 case IPL_TYPE_FCP_DUMP:
316 return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
317 default:
318 return 0;
319 }
320}
321
322static struct kobj_attribute sys_ipl_device_attr =
323 __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
324
325static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
326 struct bin_attribute *attr, char *buf,
327 loff_t off, size_t count)
328{
329 return memory_read_from_buffer(buf, count, &off, &ipl_block,
330 ipl_block.hdr.len);
331}
332static struct bin_attribute ipl_parameter_attr =
333 __BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL,
334 PAGE_SIZE);
335
336static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
337 struct bin_attribute *attr, char *buf,
338 loff_t off, size_t count)
339{
340 unsigned int size = ipl_block.fcp.scp_data_len;
341 void *scp_data = &ipl_block.fcp.scp_data;
342
343 return memory_read_from_buffer(buf, count, &off, scp_data, size);
344}
345static struct bin_attribute ipl_scp_data_attr =
346 __BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE);
347
348static struct bin_attribute *ipl_fcp_bin_attrs[] = {
349 &ipl_parameter_attr,
350 &ipl_scp_data_attr,
351 NULL,
352};
353
354/* FCP ipl device attributes */
355
356DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
357 (unsigned long long)ipl_block.fcp.wwpn);
358DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n",
359 (unsigned long long)ipl_block.fcp.lun);
360DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
361 (unsigned long long)ipl_block.fcp.bootprog);
362DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
363 (unsigned long long)ipl_block.fcp.br_lba);
364
365static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
366 struct kobj_attribute *attr, char *page)
367{
368 char loadparm[LOADPARM_LEN + 1] = {};
369
370 if (!sclp_ipl_info.is_valid)
371 return sprintf(page, "#unknown#\n");
372 memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
373 EBCASC(loadparm, LOADPARM_LEN);
374 strim(loadparm);
375 return sprintf(page, "%s\n", loadparm);
376}
377
378static struct kobj_attribute sys_ipl_ccw_loadparm_attr =
379 __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
380
381static struct attribute *ipl_fcp_attrs[] = {
382 &sys_ipl_type_attr.attr,
383 &sys_ipl_device_attr.attr,
384 &sys_ipl_fcp_wwpn_attr.attr,
385 &sys_ipl_fcp_lun_attr.attr,
386 &sys_ipl_fcp_bootprog_attr.attr,
387 &sys_ipl_fcp_br_lba_attr.attr,
388 &sys_ipl_ccw_loadparm_attr.attr,
389 &sys_ipl_secure_attr.attr,
390 &sys_ipl_has_secure_attr.attr,
391 NULL,
392};
393
394static struct attribute_group ipl_fcp_attr_group = {
395 .attrs = ipl_fcp_attrs,
396 .bin_attrs = ipl_fcp_bin_attrs,
397};
398
399/* CCW ipl device attributes */
400
401static struct attribute *ipl_ccw_attrs_vm[] = {
402 &sys_ipl_type_attr.attr,
403 &sys_ipl_device_attr.attr,
404 &sys_ipl_ccw_loadparm_attr.attr,
405 &sys_ipl_vm_parm_attr.attr,
406 &sys_ipl_secure_attr.attr,
407 &sys_ipl_has_secure_attr.attr,
408 NULL,
409};
410
411static struct attribute *ipl_ccw_attrs_lpar[] = {
412 &sys_ipl_type_attr.attr,
413 &sys_ipl_device_attr.attr,
414 &sys_ipl_ccw_loadparm_attr.attr,
415 &sys_ipl_secure_attr.attr,
416 &sys_ipl_has_secure_attr.attr,
417 NULL,
418};
419
420static struct attribute_group ipl_ccw_attr_group_vm = {
421 .attrs = ipl_ccw_attrs_vm,
422};
423
424static struct attribute_group ipl_ccw_attr_group_lpar = {
425 .attrs = ipl_ccw_attrs_lpar
426};
427
428/* UNKNOWN ipl device attributes */
429
430static struct attribute *ipl_unknown_attrs[] = {
431 &sys_ipl_type_attr.attr,
432 NULL,
433};
434
435static struct attribute_group ipl_unknown_attr_group = {
436 .attrs = ipl_unknown_attrs,
437};
438
439static struct kset *ipl_kset;
440
441static void __ipl_run(void *unused)
442{
443 __bpon();
444 diag308(DIAG308_LOAD_CLEAR, NULL);
445}
446
447static void ipl_run(struct shutdown_trigger *trigger)
448{
449 smp_call_ipl_cpu(__ipl_run, NULL);
450}
451
452static int __init ipl_init(void)
453{
454 int rc;
455
456 ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj);
457 if (!ipl_kset) {
458 rc = -ENOMEM;
459 goto out;
460 }
461 switch (ipl_info.type) {
462 case IPL_TYPE_CCW:
463 if (MACHINE_IS_VM)
464 rc = sysfs_create_group(&ipl_kset->kobj,
465 &ipl_ccw_attr_group_vm);
466 else
467 rc = sysfs_create_group(&ipl_kset->kobj,
468 &ipl_ccw_attr_group_lpar);
469 break;
470 case IPL_TYPE_FCP:
471 case IPL_TYPE_FCP_DUMP:
472 rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
473 break;
474 default:
475 rc = sysfs_create_group(&ipl_kset->kobj,
476 &ipl_unknown_attr_group);
477 break;
478 }
479out:
480 if (rc)
481 panic("ipl_init failed: rc = %i\n", rc);
482
483 return 0;
484}
485
486static struct shutdown_action __refdata ipl_action = {
487 .name = SHUTDOWN_ACTION_IPL_STR,
488 .fn = ipl_run,
489 .init = ipl_init,
490};
491
492/*
493 * reipl shutdown action: Reboot Linux on shutdown.
494 */
495
496/* VM IPL PARM attributes */
497static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb,
498 char *page)
499{
500 char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
501
502 ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb);
503 return sprintf(page, "%s\n", vmparm);
504}
505
506static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
507 size_t vmparm_max,
508 const char *buf, size_t len)
509{
510 int i, ip_len;
511
512 /* ignore trailing newline */
513 ip_len = len;
514 if ((len > 0) && (buf[len - 1] == '\n'))
515 ip_len--;
516
517 if (ip_len > vmparm_max)
518 return -EINVAL;
519
520 /* parm is used to store kernel options, check for common chars */
521 for (i = 0; i < ip_len; i++)
522 if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
523 return -EINVAL;
524
525 memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
526 ipb->ccw.vm_parm_len = ip_len;
527 if (ip_len > 0) {
528 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
529 memcpy(ipb->ccw.vm_parm, buf, ip_len);
530 ASCEBC(ipb->ccw.vm_parm, ip_len);
531 } else {
532 ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP;
533 }
534
535 return len;
536}
537
538/* NSS wrapper */
539static ssize_t reipl_nss_vmparm_show(struct kobject *kobj,
540 struct kobj_attribute *attr, char *page)
541{
542 return reipl_generic_vmparm_show(reipl_block_nss, page);
543}
544
545static ssize_t reipl_nss_vmparm_store(struct kobject *kobj,
546 struct kobj_attribute *attr,
547 const char *buf, size_t len)
548{
549 return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len);
550}
551
552/* CCW wrapper */
553static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj,
554 struct kobj_attribute *attr, char *page)
555{
556 return reipl_generic_vmparm_show(reipl_block_ccw, page);
557}
558
559static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj,
560 struct kobj_attribute *attr,
561 const char *buf, size_t len)
562{
563 return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
564}
565
566static struct kobj_attribute sys_reipl_nss_vmparm_attr =
567 __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show,
568 reipl_nss_vmparm_store);
569static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
570 __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show,
571 reipl_ccw_vmparm_store);
572
573/* FCP reipl device attributes */
574
575static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
576 struct bin_attribute *attr,
577 char *buf, loff_t off, size_t count)
578{
579 size_t size = reipl_block_fcp->fcp.scp_data_len;
580 void *scp_data = reipl_block_fcp->fcp.scp_data;
581
582 return memory_read_from_buffer(buf, count, &off, scp_data, size);
583}
584
585static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
586 struct bin_attribute *attr,
587 char *buf, loff_t off, size_t count)
588{
589 size_t scpdata_len = count;
590 size_t padding;
591
592
593 if (off)
594 return -EINVAL;
595
596 memcpy(reipl_block_fcp->fcp.scp_data, buf, count);
597 if (scpdata_len % 8) {
598 padding = 8 - (scpdata_len % 8);
599 memset(reipl_block_fcp->fcp.scp_data + scpdata_len,
600 0, padding);
601 scpdata_len += padding;
602 }
603
604 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
605 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len;
606 reipl_block_fcp->fcp.scp_data_len = scpdata_len;
607
608 return count;
609}
610static struct bin_attribute sys_reipl_fcp_scp_data_attr =
611 __BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read,
612 reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE);
613
614static struct bin_attribute *reipl_fcp_bin_attrs[] = {
615 &sys_reipl_fcp_scp_data_attr,
616 NULL,
617};
618
619DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
620 reipl_block_fcp->fcp.wwpn);
621DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
622 reipl_block_fcp->fcp.lun);
623DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
624 reipl_block_fcp->fcp.bootprog);
625DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
626 reipl_block_fcp->fcp.br_lba);
627DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
628 reipl_block_fcp->fcp.devno);
629
630static void reipl_get_ascii_loadparm(char *loadparm,
631 struct ipl_parameter_block *ibp)
632{
633 memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN);
634 EBCASC(loadparm, LOADPARM_LEN);
635 loadparm[LOADPARM_LEN] = 0;
636 strim(loadparm);
637}
638
639static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
640 char *page)
641{
642 char buf[LOADPARM_LEN + 1];
643
644 reipl_get_ascii_loadparm(buf, ipb);
645 return sprintf(page, "%s\n", buf);
646}
647
648static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
649 const char *buf, size_t len)
650{
651 int i, lp_len;
652
653 /* ignore trailing newline */
654 lp_len = len;
655 if ((len > 0) && (buf[len - 1] == '\n'))
656 lp_len--;
657 /* loadparm can have max 8 characters and must not start with a blank */
658 if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
659 return -EINVAL;
660 /* loadparm can only contain "a-z,A-Z,0-9,SP,." */
661 for (i = 0; i < lp_len; i++) {
662 if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
663 (buf[i] == '.'))
664 continue;
665 return -EINVAL;
666 }
667 /* initialize loadparm with blanks */
668 memset(ipb->common.loadparm, ' ', LOADPARM_LEN);
669 /* copy and convert to ebcdic */
670 memcpy(ipb->common.loadparm, buf, lp_len);
671 ASCEBC(ipb->common.loadparm, LOADPARM_LEN);
672 ipb->common.flags |= IPL_PB0_FLAG_LOADPARM;
673 return len;
674}
675
676/* FCP wrapper */
677static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj,
678 struct kobj_attribute *attr, char *page)
679{
680 return reipl_generic_loadparm_show(reipl_block_fcp, page);
681}
682
683static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj,
684 struct kobj_attribute *attr,
685 const char *buf, size_t len)
686{
687 return reipl_generic_loadparm_store(reipl_block_fcp, buf, len);
688}
689
690static struct kobj_attribute sys_reipl_fcp_loadparm_attr =
691 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show,
692 reipl_fcp_loadparm_store);
693
694static struct attribute *reipl_fcp_attrs[] = {
695 &sys_reipl_fcp_device_attr.attr,
696 &sys_reipl_fcp_wwpn_attr.attr,
697 &sys_reipl_fcp_lun_attr.attr,
698 &sys_reipl_fcp_bootprog_attr.attr,
699 &sys_reipl_fcp_br_lba_attr.attr,
700 &sys_reipl_fcp_loadparm_attr.attr,
701 NULL,
702};
703
704static struct attribute_group reipl_fcp_attr_group = {
705 .attrs = reipl_fcp_attrs,
706 .bin_attrs = reipl_fcp_bin_attrs,
707};
708
709/* CCW reipl device attributes */
710DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
711
712/* NSS wrapper */
713static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
714 struct kobj_attribute *attr, char *page)
715{
716 return reipl_generic_loadparm_show(reipl_block_nss, page);
717}
718
719static ssize_t reipl_nss_loadparm_store(struct kobject *kobj,
720 struct kobj_attribute *attr,
721 const char *buf, size_t len)
722{
723 return reipl_generic_loadparm_store(reipl_block_nss, buf, len);
724}
725
726/* CCW wrapper */
727static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
728 struct kobj_attribute *attr, char *page)
729{
730 return reipl_generic_loadparm_show(reipl_block_ccw, page);
731}
732
733static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
734 struct kobj_attribute *attr,
735 const char *buf, size_t len)
736{
737 return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
738}
739
740static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
741 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
742 reipl_ccw_loadparm_store);
743
744static struct attribute *reipl_ccw_attrs_vm[] = {
745 &sys_reipl_ccw_device_attr.attr,
746 &sys_reipl_ccw_loadparm_attr.attr,
747 &sys_reipl_ccw_vmparm_attr.attr,
748 NULL,
749};
750
751static struct attribute *reipl_ccw_attrs_lpar[] = {
752 &sys_reipl_ccw_device_attr.attr,
753 &sys_reipl_ccw_loadparm_attr.attr,
754 NULL,
755};
756
757static struct attribute_group reipl_ccw_attr_group_vm = {
758 .name = IPL_CCW_STR,
759 .attrs = reipl_ccw_attrs_vm,
760};
761
762static struct attribute_group reipl_ccw_attr_group_lpar = {
763 .name = IPL_CCW_STR,
764 .attrs = reipl_ccw_attrs_lpar,
765};
766
767
768/* NSS reipl device attributes */
769static void reipl_get_ascii_nss_name(char *dst,
770 struct ipl_parameter_block *ipb)
771{
772 memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE);
773 EBCASC(dst, NSS_NAME_SIZE);
774 dst[NSS_NAME_SIZE] = 0;
775}
776
777static ssize_t reipl_nss_name_show(struct kobject *kobj,
778 struct kobj_attribute *attr, char *page)
779{
780 char nss_name[NSS_NAME_SIZE + 1] = {};
781
782 reipl_get_ascii_nss_name(nss_name, reipl_block_nss);
783 return sprintf(page, "%s\n", nss_name);
784}
785
786static ssize_t reipl_nss_name_store(struct kobject *kobj,
787 struct kobj_attribute *attr,
788 const char *buf, size_t len)
789{
790 int nss_len;
791
792 /* ignore trailing newline */
793 nss_len = len;
794 if ((len > 0) && (buf[len - 1] == '\n'))
795 nss_len--;
796
797 if (nss_len > NSS_NAME_SIZE)
798 return -EINVAL;
799
800 memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE);
801 if (nss_len > 0) {
802 reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS;
803 memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len);
804 ASCEBC(reipl_block_nss->ccw.nss_name, nss_len);
805 EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len);
806 } else {
807 reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS;
808 }
809
810 return len;
811}
812
813static struct kobj_attribute sys_reipl_nss_name_attr =
814 __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show,
815 reipl_nss_name_store);
816
817static struct kobj_attribute sys_reipl_nss_loadparm_attr =
818 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show,
819 reipl_nss_loadparm_store);
820
821static struct attribute *reipl_nss_attrs[] = {
822 &sys_reipl_nss_name_attr.attr,
823 &sys_reipl_nss_loadparm_attr.attr,
824 &sys_reipl_nss_vmparm_attr.attr,
825 NULL,
826};
827
828static struct attribute_group reipl_nss_attr_group = {
829 .name = IPL_NSS_STR,
830 .attrs = reipl_nss_attrs,
831};
832
833void set_os_info_reipl_block(void)
834{
835 os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual,
836 reipl_block_actual->hdr.len);
837}
838
839/* reipl type */
840
841static int reipl_set_type(enum ipl_type type)
842{
843 if (!(reipl_capabilities & type))
844 return -EINVAL;
845
846 switch(type) {
847 case IPL_TYPE_CCW:
848 reipl_block_actual = reipl_block_ccw;
849 break;
850 case IPL_TYPE_FCP:
851 reipl_block_actual = reipl_block_fcp;
852 break;
853 case IPL_TYPE_NSS:
854 reipl_block_actual = reipl_block_nss;
855 break;
856 default:
857 break;
858 }
859 reipl_type = type;
860 return 0;
861}
862
863static ssize_t reipl_type_show(struct kobject *kobj,
864 struct kobj_attribute *attr, char *page)
865{
866 return sprintf(page, "%s\n", ipl_type_str(reipl_type));
867}
868
869static ssize_t reipl_type_store(struct kobject *kobj,
870 struct kobj_attribute *attr,
871 const char *buf, size_t len)
872{
873 int rc = -EINVAL;
874
875 if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
876 rc = reipl_set_type(IPL_TYPE_CCW);
877 else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
878 rc = reipl_set_type(IPL_TYPE_FCP);
879 else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0)
880 rc = reipl_set_type(IPL_TYPE_NSS);
881 return (rc != 0) ? rc : len;
882}
883
884static struct kobj_attribute reipl_type_attr =
885 __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
886
887static struct kset *reipl_kset;
888static struct kset *reipl_fcp_kset;
889
890static void __reipl_run(void *unused)
891{
892 switch (reipl_type) {
893 case IPL_TYPE_CCW:
894 diag308(DIAG308_SET, reipl_block_ccw);
895 diag308(DIAG308_LOAD_CLEAR, NULL);
896 break;
897 case IPL_TYPE_FCP:
898 diag308(DIAG308_SET, reipl_block_fcp);
899 diag308(DIAG308_LOAD_CLEAR, NULL);
900 break;
901 case IPL_TYPE_NSS:
902 diag308(DIAG308_SET, reipl_block_nss);
903 diag308(DIAG308_LOAD_CLEAR, NULL);
904 break;
905 case IPL_TYPE_UNKNOWN:
906 diag308(DIAG308_LOAD_CLEAR, NULL);
907 break;
908 case IPL_TYPE_FCP_DUMP:
909 break;
910 }
911 disabled_wait();
912}
913
914static void reipl_run(struct shutdown_trigger *trigger)
915{
916 smp_call_ipl_cpu(__reipl_run, NULL);
917}
918
919static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
920{
921 ipb->hdr.len = IPL_BP_CCW_LEN;
922 ipb->hdr.version = IPL_PARM_BLOCK_VERSION;
923 ipb->pb0_hdr.len = IPL_BP0_CCW_LEN;
924 ipb->pb0_hdr.pbt = IPL_PBT_CCW;
925}
926
927static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)
928{
929 /* LOADPARM */
930 /* check if read scp info worked and set loadparm */
931 if (sclp_ipl_info.is_valid)
932 memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
933 else
934 /* read scp info failed: set empty loadparm (EBCDIC blanks) */
935 memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN);
936 ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM;
937
938 /* VM PARM */
939 if (MACHINE_IS_VM && ipl_block_valid &&
940 (ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) {
941
942 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
943 ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len;
944 memcpy(ipb->ccw.vm_parm,
945 ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE);
946 }
947}
948
949static int __init reipl_nss_init(void)
950{
951 int rc;
952
953 if (!MACHINE_IS_VM)
954 return 0;
955
956 reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL);
957 if (!reipl_block_nss)
958 return -ENOMEM;
959
960 rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group);
961 if (rc)
962 return rc;
963
964 reipl_block_ccw_init(reipl_block_nss);
965 reipl_capabilities |= IPL_TYPE_NSS;
966 return 0;
967}
968
969static int __init reipl_ccw_init(void)
970{
971 int rc;
972
973 reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
974 if (!reipl_block_ccw)
975 return -ENOMEM;
976
977 rc = sysfs_create_group(&reipl_kset->kobj,
978 MACHINE_IS_VM ? &reipl_ccw_attr_group_vm
979 : &reipl_ccw_attr_group_lpar);
980 if (rc)
981 return rc;
982
983 reipl_block_ccw_init(reipl_block_ccw);
984 if (ipl_info.type == IPL_TYPE_CCW) {
985 reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid;
986 reipl_block_ccw->ccw.devno = ipl_block.ccw.devno;
987 reipl_block_ccw_fill_parms(reipl_block_ccw);
988 }
989
990 reipl_capabilities |= IPL_TYPE_CCW;
991 return 0;
992}
993
994static int __init reipl_fcp_init(void)
995{
996 int rc;
997
998 reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
999 if (!reipl_block_fcp)
1000 return -ENOMEM;
1001
1002 /* sysfs: create fcp kset for mixing attr group and bin attrs */
1003 reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL,
1004 &reipl_kset->kobj);
1005 if (!reipl_fcp_kset) {
1006 free_page((unsigned long) reipl_block_fcp);
1007 return -ENOMEM;
1008 }
1009
1010 rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
1011 if (rc) {
1012 kset_unregister(reipl_fcp_kset);
1013 free_page((unsigned long) reipl_block_fcp);
1014 return rc;
1015 }
1016
1017 if (ipl_info.type == IPL_TYPE_FCP) {
1018 memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block));
1019 /*
1020 * Fix loadparm: There are systems where the (SCSI) LOADPARM
1021 * is invalid in the SCSI IPL parameter block, so take it
1022 * always from sclp_ipl_info.
1023 */
1024 memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm,
1025 LOADPARM_LEN);
1026 } else {
1027 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN;
1028 reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
1029 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
1030 reipl_block_fcp->fcp.pbt = IPL_PBT_FCP;
1031 reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL;
1032 }
1033 reipl_capabilities |= IPL_TYPE_FCP;
1034 return 0;
1035}
1036
1037static int __init reipl_type_init(void)
1038{
1039 enum ipl_type reipl_type = ipl_info.type;
1040 struct ipl_parameter_block *reipl_block;
1041 unsigned long size;
1042
1043 reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size);
1044 if (!reipl_block)
1045 goto out;
1046 /*
1047 * If we have an OS info reipl block, this will be used
1048 */
1049 if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) {
1050 memcpy(reipl_block_fcp, reipl_block, size);
1051 reipl_type = IPL_TYPE_FCP;
1052 } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) {
1053 memcpy(reipl_block_ccw, reipl_block, size);
1054 reipl_type = IPL_TYPE_CCW;
1055 }
1056out:
1057 return reipl_set_type(reipl_type);
1058}
1059
1060static int __init reipl_init(void)
1061{
1062 int rc;
1063
1064 reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj);
1065 if (!reipl_kset)
1066 return -ENOMEM;
1067 rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr);
1068 if (rc) {
1069 kset_unregister(reipl_kset);
1070 return rc;
1071 }
1072 rc = reipl_ccw_init();
1073 if (rc)
1074 return rc;
1075 rc = reipl_fcp_init();
1076 if (rc)
1077 return rc;
1078 rc = reipl_nss_init();
1079 if (rc)
1080 return rc;
1081 return reipl_type_init();
1082}
1083
1084static struct shutdown_action __refdata reipl_action = {
1085 .name = SHUTDOWN_ACTION_REIPL_STR,
1086 .fn = reipl_run,
1087 .init = reipl_init,
1088};
1089
1090/*
1091 * dump shutdown action: Dump Linux on shutdown.
1092 */
1093
1094/* FCP dump device attributes */
1095
1096DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n",
1097 dump_block_fcp->fcp.wwpn);
1098DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n",
1099 dump_block_fcp->fcp.lun);
1100DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
1101 dump_block_fcp->fcp.bootprog);
1102DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
1103 dump_block_fcp->fcp.br_lba);
1104DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
1105 dump_block_fcp->fcp.devno);
1106
1107static struct attribute *dump_fcp_attrs[] = {
1108 &sys_dump_fcp_device_attr.attr,
1109 &sys_dump_fcp_wwpn_attr.attr,
1110 &sys_dump_fcp_lun_attr.attr,
1111 &sys_dump_fcp_bootprog_attr.attr,
1112 &sys_dump_fcp_br_lba_attr.attr,
1113 NULL,
1114};
1115
1116static struct attribute_group dump_fcp_attr_group = {
1117 .name = IPL_FCP_STR,
1118 .attrs = dump_fcp_attrs,
1119};
1120
1121/* CCW dump device attributes */
1122DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw);
1123
1124static struct attribute *dump_ccw_attrs[] = {
1125 &sys_dump_ccw_device_attr.attr,
1126 NULL,
1127};
1128
1129static struct attribute_group dump_ccw_attr_group = {
1130 .name = IPL_CCW_STR,
1131 .attrs = dump_ccw_attrs,
1132};
1133
1134/* dump type */
1135
1136static int dump_set_type(enum dump_type type)
1137{
1138 if (!(dump_capabilities & type))
1139 return -EINVAL;
1140 dump_type = type;
1141 return 0;
1142}
1143
1144static ssize_t dump_type_show(struct kobject *kobj,
1145 struct kobj_attribute *attr, char *page)
1146{
1147 return sprintf(page, "%s\n", dump_type_str(dump_type));
1148}
1149
1150static ssize_t dump_type_store(struct kobject *kobj,
1151 struct kobj_attribute *attr,
1152 const char *buf, size_t len)
1153{
1154 int rc = -EINVAL;
1155
1156 if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0)
1157 rc = dump_set_type(DUMP_TYPE_NONE);
1158 else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0)
1159 rc = dump_set_type(DUMP_TYPE_CCW);
1160 else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0)
1161 rc = dump_set_type(DUMP_TYPE_FCP);
1162 return (rc != 0) ? rc : len;
1163}
1164
1165static struct kobj_attribute dump_type_attr =
1166 __ATTR(dump_type, 0644, dump_type_show, dump_type_store);
1167
1168static struct kset *dump_kset;
1169
1170static void diag308_dump(void *dump_block)
1171{
1172 diag308(DIAG308_SET, dump_block);
1173 while (1) {
1174 if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302)
1175 break;
1176 udelay_simple(USEC_PER_SEC);
1177 }
1178}
1179
1180static void __dump_run(void *unused)
1181{
1182 switch (dump_type) {
1183 case DUMP_TYPE_CCW:
1184 diag308_dump(dump_block_ccw);
1185 break;
1186 case DUMP_TYPE_FCP:
1187 diag308_dump(dump_block_fcp);
1188 break;
1189 default:
1190 break;
1191 }
1192}
1193
1194static void dump_run(struct shutdown_trigger *trigger)
1195{
1196 if (dump_type == DUMP_TYPE_NONE)
1197 return;
1198 smp_send_stop();
1199 smp_call_ipl_cpu(__dump_run, NULL);
1200}
1201
1202static int __init dump_ccw_init(void)
1203{
1204 int rc;
1205
1206 dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
1207 if (!dump_block_ccw)
1208 return -ENOMEM;
1209 rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group);
1210 if (rc) {
1211 free_page((unsigned long)dump_block_ccw);
1212 return rc;
1213 }
1214 dump_block_ccw->hdr.len = IPL_BP_CCW_LEN;
1215 dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
1216 dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN;
1217 dump_block_ccw->ccw.pbt = IPL_PBT_CCW;
1218 dump_capabilities |= DUMP_TYPE_CCW;
1219 return 0;
1220}
1221
1222static int __init dump_fcp_init(void)
1223{
1224 int rc;
1225
1226 if (!sclp_ipl_info.has_dump)
1227 return 0; /* LDIPL DUMP is not installed */
1228 dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
1229 if (!dump_block_fcp)
1230 return -ENOMEM;
1231 rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group);
1232 if (rc) {
1233 free_page((unsigned long)dump_block_fcp);
1234 return rc;
1235 }
1236 dump_block_fcp->hdr.len = IPL_BP_FCP_LEN;
1237 dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
1238 dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
1239 dump_block_fcp->fcp.pbt = IPL_PBT_FCP;
1240 dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP;
1241 dump_capabilities |= DUMP_TYPE_FCP;
1242 return 0;
1243}
1244
1245static int __init dump_init(void)
1246{
1247 int rc;
1248
1249 dump_kset = kset_create_and_add("dump", NULL, firmware_kobj);
1250 if (!dump_kset)
1251 return -ENOMEM;
1252 rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr);
1253 if (rc) {
1254 kset_unregister(dump_kset);
1255 return rc;
1256 }
1257 rc = dump_ccw_init();
1258 if (rc)
1259 return rc;
1260 rc = dump_fcp_init();
1261 if (rc)
1262 return rc;
1263 dump_set_type(DUMP_TYPE_NONE);
1264 return 0;
1265}
1266
1267static struct shutdown_action __refdata dump_action = {
1268 .name = SHUTDOWN_ACTION_DUMP_STR,
1269 .fn = dump_run,
1270 .init = dump_init,
1271};
1272
1273static void dump_reipl_run(struct shutdown_trigger *trigger)
1274{
1275 unsigned long ipib = (unsigned long) reipl_block_actual;
1276 unsigned int csum;
1277
1278 csum = (__force unsigned int)
1279 csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
1280 mem_assign_absolute(S390_lowcore.ipib, ipib);
1281 mem_assign_absolute(S390_lowcore.ipib_checksum, csum);
1282 dump_run(trigger);
1283}
1284
1285static struct shutdown_action __refdata dump_reipl_action = {
1286 .name = SHUTDOWN_ACTION_DUMP_REIPL_STR,
1287 .fn = dump_reipl_run,
1288};
1289
1290/*
1291 * vmcmd shutdown action: Trigger vm command on shutdown.
1292 */
1293
1294static char vmcmd_on_reboot[128];
1295static char vmcmd_on_panic[128];
1296static char vmcmd_on_halt[128];
1297static char vmcmd_on_poff[128];
1298static char vmcmd_on_restart[128];
1299
1300DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot);
1301DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic);
1302DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt);
1303DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff);
1304DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart);
1305
1306static struct attribute *vmcmd_attrs[] = {
1307 &sys_vmcmd_on_reboot_attr.attr,
1308 &sys_vmcmd_on_panic_attr.attr,
1309 &sys_vmcmd_on_halt_attr.attr,
1310 &sys_vmcmd_on_poff_attr.attr,
1311 &sys_vmcmd_on_restart_attr.attr,
1312 NULL,
1313};
1314
1315static struct attribute_group vmcmd_attr_group = {
1316 .attrs = vmcmd_attrs,
1317};
1318
1319static struct kset *vmcmd_kset;
1320
1321static void vmcmd_run(struct shutdown_trigger *trigger)
1322{
1323 char *cmd;
1324
1325 if (strcmp(trigger->name, ON_REIPL_STR) == 0)
1326 cmd = vmcmd_on_reboot;
1327 else if (strcmp(trigger->name, ON_PANIC_STR) == 0)
1328 cmd = vmcmd_on_panic;
1329 else if (strcmp(trigger->name, ON_HALT_STR) == 0)
1330 cmd = vmcmd_on_halt;
1331 else if (strcmp(trigger->name, ON_POFF_STR) == 0)
1332 cmd = vmcmd_on_poff;
1333 else if (strcmp(trigger->name, ON_RESTART_STR) == 0)
1334 cmd = vmcmd_on_restart;
1335 else
1336 return;
1337
1338 if (strlen(cmd) == 0)
1339 return;
1340 __cpcmd(cmd, NULL, 0, NULL);
1341}
1342
1343static int vmcmd_init(void)
1344{
1345 if (!MACHINE_IS_VM)
1346 return -EOPNOTSUPP;
1347 vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj);
1348 if (!vmcmd_kset)
1349 return -ENOMEM;
1350 return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group);
1351}
1352
1353static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR,
1354 vmcmd_run, vmcmd_init};
1355
1356/*
1357 * stop shutdown action: Stop Linux on shutdown.
1358 */
1359
1360static void stop_run(struct shutdown_trigger *trigger)
1361{
1362 if (strcmp(trigger->name, ON_PANIC_STR) == 0 ||
1363 strcmp(trigger->name, ON_RESTART_STR) == 0)
1364 disabled_wait();
1365 smp_stop_cpu();
1366}
1367
1368static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR,
1369 stop_run, NULL};
1370
1371/* action list */
1372
1373static struct shutdown_action *shutdown_actions_list[] = {
1374 &ipl_action, &reipl_action, &dump_reipl_action, &dump_action,
1375 &vmcmd_action, &stop_action};
1376#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *))
1377
1378/*
1379 * Trigger section
1380 */
1381
1382static struct kset *shutdown_actions_kset;
1383
1384static int set_trigger(const char *buf, struct shutdown_trigger *trigger,
1385 size_t len)
1386{
1387 int i;
1388
1389 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
1390 if (sysfs_streq(buf, shutdown_actions_list[i]->name)) {
1391 if (shutdown_actions_list[i]->init_rc) {
1392 return shutdown_actions_list[i]->init_rc;
1393 } else {
1394 trigger->action = shutdown_actions_list[i];
1395 return len;
1396 }
1397 }
1398 }
1399 return -EINVAL;
1400}
1401
1402/* on reipl */
1403
1404static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR,
1405 &reipl_action};
1406
1407static ssize_t on_reboot_show(struct kobject *kobj,
1408 struct kobj_attribute *attr, char *page)
1409{
1410 return sprintf(page, "%s\n", on_reboot_trigger.action->name);
1411}
1412
1413static ssize_t on_reboot_store(struct kobject *kobj,
1414 struct kobj_attribute *attr,
1415 const char *buf, size_t len)
1416{
1417 return set_trigger(buf, &on_reboot_trigger, len);
1418}
1419static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot);
1420
1421static void do_machine_restart(char *__unused)
1422{
1423 smp_send_stop();
1424 on_reboot_trigger.action->fn(&on_reboot_trigger);
1425 reipl_run(NULL);
1426}
1427void (*_machine_restart)(char *command) = do_machine_restart;
1428
1429/* on panic */
1430
1431static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action};
1432
1433static ssize_t on_panic_show(struct kobject *kobj,
1434 struct kobj_attribute *attr, char *page)
1435{
1436 return sprintf(page, "%s\n", on_panic_trigger.action->name);
1437}
1438
1439static ssize_t on_panic_store(struct kobject *kobj,
1440 struct kobj_attribute *attr,
1441 const char *buf, size_t len)
1442{
1443 return set_trigger(buf, &on_panic_trigger, len);
1444}
1445static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic);
1446
1447static void do_panic(void)
1448{
1449 lgr_info_log();
1450 on_panic_trigger.action->fn(&on_panic_trigger);
1451 stop_run(&on_panic_trigger);
1452}
1453
1454/* on restart */
1455
1456static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR,
1457 &stop_action};
1458
1459static ssize_t on_restart_show(struct kobject *kobj,
1460 struct kobj_attribute *attr, char *page)
1461{
1462 return sprintf(page, "%s\n", on_restart_trigger.action->name);
1463}
1464
1465static ssize_t on_restart_store(struct kobject *kobj,
1466 struct kobj_attribute *attr,
1467 const char *buf, size_t len)
1468{
1469 return set_trigger(buf, &on_restart_trigger, len);
1470}
1471static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart);
1472
1473static void __do_restart(void *ignore)
1474{
1475 __arch_local_irq_stosm(0x04); /* enable DAT */
1476 smp_send_stop();
1477#ifdef CONFIG_CRASH_DUMP
1478 crash_kexec(NULL);
1479#endif
1480 on_restart_trigger.action->fn(&on_restart_trigger);
1481 stop_run(&on_restart_trigger);
1482}
1483
1484void do_restart(void)
1485{
1486 tracing_off();
1487 debug_locks_off();
1488 lgr_info_log();
1489 smp_call_online_cpu(__do_restart, NULL);
1490}
1491
1492/* on halt */
1493
1494static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action};
1495
1496static ssize_t on_halt_show(struct kobject *kobj,
1497 struct kobj_attribute *attr, char *page)
1498{
1499 return sprintf(page, "%s\n", on_halt_trigger.action->name);
1500}
1501
1502static ssize_t on_halt_store(struct kobject *kobj,
1503 struct kobj_attribute *attr,
1504 const char *buf, size_t len)
1505{
1506 return set_trigger(buf, &on_halt_trigger, len);
1507}
1508static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt);
1509
1510static void do_machine_halt(void)
1511{
1512 smp_send_stop();
1513 on_halt_trigger.action->fn(&on_halt_trigger);
1514 stop_run(&on_halt_trigger);
1515}
1516void (*_machine_halt)(void) = do_machine_halt;
1517
1518/* on power off */
1519
1520static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action};
1521
1522static ssize_t on_poff_show(struct kobject *kobj,
1523 struct kobj_attribute *attr, char *page)
1524{
1525 return sprintf(page, "%s\n", on_poff_trigger.action->name);
1526}
1527
1528static ssize_t on_poff_store(struct kobject *kobj,
1529 struct kobj_attribute *attr,
1530 const char *buf, size_t len)
1531{
1532 return set_trigger(buf, &on_poff_trigger, len);
1533}
1534static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff);
1535
1536static void do_machine_power_off(void)
1537{
1538 smp_send_stop();
1539 on_poff_trigger.action->fn(&on_poff_trigger);
1540 stop_run(&on_poff_trigger);
1541}
1542void (*_machine_power_off)(void) = do_machine_power_off;
1543
1544static struct attribute *shutdown_action_attrs[] = {
1545 &on_restart_attr.attr,
1546 &on_reboot_attr.attr,
1547 &on_panic_attr.attr,
1548 &on_halt_attr.attr,
1549 &on_poff_attr.attr,
1550 NULL,
1551};
1552
1553static struct attribute_group shutdown_action_attr_group = {
1554 .attrs = shutdown_action_attrs,
1555};
1556
1557static void __init shutdown_triggers_init(void)
1558{
1559 shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL,
1560 firmware_kobj);
1561 if (!shutdown_actions_kset)
1562 goto fail;
1563 if (sysfs_create_group(&shutdown_actions_kset->kobj,
1564 &shutdown_action_attr_group))
1565 goto fail;
1566 return;
1567fail:
1568 panic("shutdown_triggers_init failed\n");
1569}
1570
1571static void __init shutdown_actions_init(void)
1572{
1573 int i;
1574
1575 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
1576 if (!shutdown_actions_list[i]->init)
1577 continue;
1578 shutdown_actions_list[i]->init_rc =
1579 shutdown_actions_list[i]->init();
1580 }
1581}
1582
1583static int __init s390_ipl_init(void)
1584{
1585 char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40};
1586
1587 sclp_early_get_ipl_info(&sclp_ipl_info);
1588 /*
1589 * Fix loadparm: There are systems where the (SCSI) LOADPARM
1590 * returned by read SCP info is invalid (contains EBCDIC blanks)
1591 * when the system has been booted via diag308. In that case we use
1592 * the value from diag308, if available.
1593 *
1594 * There are also systems where diag308 store does not work in
1595 * case the system is booted from HMC. Fortunately in this case
1596 * READ SCP info provides the correct value.
1597 */
1598 if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid)
1599 memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN);
1600 shutdown_actions_init();
1601 shutdown_triggers_init();
1602 return 0;
1603}
1604
1605__initcall(s390_ipl_init);
1606
1607static void __init strncpy_skip_quote(char *dst, char *src, int n)
1608{
1609 int sx, dx;
1610
1611 dx = 0;
1612 for (sx = 0; src[sx] != 0; sx++) {
1613 if (src[sx] == '"')
1614 continue;
1615 dst[dx++] = src[sx];
1616 if (dx >= n)
1617 break;
1618 }
1619}
1620
1621static int __init vmcmd_on_reboot_setup(char *str)
1622{
1623 if (!MACHINE_IS_VM)
1624 return 1;
1625 strncpy_skip_quote(vmcmd_on_reboot, str, 127);
1626 vmcmd_on_reboot[127] = 0;
1627 on_reboot_trigger.action = &vmcmd_action;
1628 return 1;
1629}
1630__setup("vmreboot=", vmcmd_on_reboot_setup);
1631
1632static int __init vmcmd_on_panic_setup(char *str)
1633{
1634 if (!MACHINE_IS_VM)
1635 return 1;
1636 strncpy_skip_quote(vmcmd_on_panic, str, 127);
1637 vmcmd_on_panic[127] = 0;
1638 on_panic_trigger.action = &vmcmd_action;
1639 return 1;
1640}
1641__setup("vmpanic=", vmcmd_on_panic_setup);
1642
1643static int __init vmcmd_on_halt_setup(char *str)
1644{
1645 if (!MACHINE_IS_VM)
1646 return 1;
1647 strncpy_skip_quote(vmcmd_on_halt, str, 127);
1648 vmcmd_on_halt[127] = 0;
1649 on_halt_trigger.action = &vmcmd_action;
1650 return 1;
1651}
1652__setup("vmhalt=", vmcmd_on_halt_setup);
1653
1654static int __init vmcmd_on_poff_setup(char *str)
1655{
1656 if (!MACHINE_IS_VM)
1657 return 1;
1658 strncpy_skip_quote(vmcmd_on_poff, str, 127);
1659 vmcmd_on_poff[127] = 0;
1660 on_poff_trigger.action = &vmcmd_action;
1661 return 1;
1662}
1663__setup("vmpoff=", vmcmd_on_poff_setup);
1664
1665static int on_panic_notify(struct notifier_block *self,
1666 unsigned long event, void *data)
1667{
1668 do_panic();
1669 return NOTIFY_OK;
1670}
1671
1672static struct notifier_block on_panic_nb = {
1673 .notifier_call = on_panic_notify,
1674 .priority = INT_MIN,
1675};
1676
1677void __init setup_ipl(void)
1678{
1679 BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE);
1680
1681 ipl_info.type = get_ipl_type();
1682 switch (ipl_info.type) {
1683 case IPL_TYPE_CCW:
1684 ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid;
1685 ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno;
1686 break;
1687 case IPL_TYPE_FCP:
1688 case IPL_TYPE_FCP_DUMP:
1689 ipl_info.data.fcp.dev_id.ssid = 0;
1690 ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno;
1691 ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn;
1692 ipl_info.data.fcp.lun = ipl_block.fcp.lun;
1693 break;
1694 case IPL_TYPE_NSS:
1695 case IPL_TYPE_UNKNOWN:
1696 /* We have no info to copy */
1697 break;
1698 }
1699 atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
1700}
1701
1702void s390_reset_system(void)
1703{
1704 /* Disable prefixing */
1705 set_prefix(0);
1706
1707 /* Disable lowcore protection */
1708 __ctl_clear_bit(0, 28);
1709 diag_dma_ops.diag308_reset();
1710}
1711
1712#ifdef CONFIG_KEXEC_FILE
1713
1714int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
1715 unsigned char flags, unsigned short cert)
1716{
1717 struct ipl_report_component *comp;
1718
1719 comp = vzalloc(sizeof(*comp));
1720 if (!comp)
1721 return -ENOMEM;
1722 list_add_tail(&comp->list, &report->components);
1723
1724 comp->entry.addr = kbuf->mem;
1725 comp->entry.len = kbuf->memsz;
1726 comp->entry.flags = flags;
1727 comp->entry.certificate_index = cert;
1728
1729 report->size += sizeof(comp->entry);
1730
1731 return 0;
1732}
1733
1734int ipl_report_add_certificate(struct ipl_report *report, void *key,
1735 unsigned long addr, unsigned long len)
1736{
1737 struct ipl_report_certificate *cert;
1738
1739 cert = vzalloc(sizeof(*cert));
1740 if (!cert)
1741 return -ENOMEM;
1742 list_add_tail(&cert->list, &report->certificates);
1743
1744 cert->entry.addr = addr;
1745 cert->entry.len = len;
1746 cert->key = key;
1747
1748 report->size += sizeof(cert->entry);
1749 report->size += cert->entry.len;
1750
1751 return 0;
1752}
1753
1754struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib)
1755{
1756 struct ipl_report *report;
1757
1758 report = vzalloc(sizeof(*report));
1759 if (!report)
1760 return ERR_PTR(-ENOMEM);
1761
1762 report->ipib = ipib;
1763 INIT_LIST_HEAD(&report->components);
1764 INIT_LIST_HEAD(&report->certificates);
1765
1766 report->size = ALIGN(ipib->hdr.len, 8);
1767 report->size += sizeof(struct ipl_rl_hdr);
1768 report->size += sizeof(struct ipl_rb_components);
1769 report->size += sizeof(struct ipl_rb_certificates);
1770
1771 return report;
1772}
1773
1774void *ipl_report_finish(struct ipl_report *report)
1775{
1776 struct ipl_report_certificate *cert;
1777 struct ipl_report_component *comp;
1778 struct ipl_rb_certificates *certs;
1779 struct ipl_parameter_block *ipib;
1780 struct ipl_rb_components *comps;
1781 struct ipl_rl_hdr *rl_hdr;
1782 void *buf, *ptr;
1783
1784 buf = vzalloc(report->size);
1785 if (!buf)
1786 return ERR_PTR(-ENOMEM);
1787 ptr = buf;
1788
1789 memcpy(ptr, report->ipib, report->ipib->hdr.len);
1790 ipib = ptr;
1791 if (ipl_secure_flag)
1792 ipib->hdr.flags |= IPL_PL_FLAG_SIPL;
1793 ipib->hdr.flags |= IPL_PL_FLAG_IPLSR;
1794 ptr += report->ipib->hdr.len;
1795 ptr = PTR_ALIGN(ptr, 8);
1796
1797 rl_hdr = ptr;
1798 ptr += sizeof(*rl_hdr);
1799
1800 comps = ptr;
1801 comps->rbt = IPL_RBT_COMPONENTS;
1802 ptr += sizeof(*comps);
1803 list_for_each_entry(comp, &report->components, list) {
1804 memcpy(ptr, &comp->entry, sizeof(comp->entry));
1805 ptr += sizeof(comp->entry);
1806 }
1807 comps->len = ptr - (void *)comps;
1808
1809 certs = ptr;
1810 certs->rbt = IPL_RBT_CERTIFICATES;
1811 ptr += sizeof(*certs);
1812 list_for_each_entry(cert, &report->certificates, list) {
1813 memcpy(ptr, &cert->entry, sizeof(cert->entry));
1814 ptr += sizeof(cert->entry);
1815 }
1816 certs->len = ptr - (void *)certs;
1817 rl_hdr->len = ptr - (void *)rl_hdr;
1818
1819 list_for_each_entry(cert, &report->certificates, list) {
1820 memcpy(ptr, cert->key, cert->entry.len);
1821 ptr += cert->entry.len;
1822 }
1823
1824 BUG_ON(ptr > buf + report->size);
1825 return buf;
1826}
1827
1828int ipl_report_free(struct ipl_report *report)
1829{
1830 struct ipl_report_component *comp, *ncomp;
1831 struct ipl_report_certificate *cert, *ncert;
1832
1833 list_for_each_entry_safe(comp, ncomp, &report->components, list)
1834 vfree(comp);
1835
1836 list_for_each_entry_safe(cert, ncert, &report->certificates, list)
1837 vfree(cert);
1838
1839 vfree(report);
1840
1841 return 0;
1842}
1843
1844#endif
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * ipl/reipl/dump support for Linux on s390.
4 *
5 * Copyright IBM Corp. 2005, 2012
6 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
7 * Volker Sameske <sameske@de.ibm.com>
8 */
9
10#include <linux/types.h>
11#include <linux/export.h>
12#include <linux/init.h>
13#include <linux/device.h>
14#include <linux/delay.h>
15#include <linux/kstrtox.h>
16#include <linux/panic_notifier.h>
17#include <linux/reboot.h>
18#include <linux/ctype.h>
19#include <linux/fs.h>
20#include <linux/gfp.h>
21#include <linux/crash_dump.h>
22#include <linux/debug_locks.h>
23#include <asm/asm-extable.h>
24#include <asm/diag.h>
25#include <asm/ipl.h>
26#include <asm/smp.h>
27#include <asm/setup.h>
28#include <asm/cpcmd.h>
29#include <asm/ebcdic.h>
30#include <asm/sclp.h>
31#include <asm/checksum.h>
32#include <asm/debug.h>
33#include <asm/abs_lowcore.h>
34#include <asm/os_info.h>
35#include <asm/sections.h>
36#include <asm/boot_data.h>
37#include "entry.h"
38
39#define IPL_PARM_BLOCK_VERSION 0
40
41#define IPL_UNKNOWN_STR "unknown"
42#define IPL_CCW_STR "ccw"
43#define IPL_ECKD_STR "eckd"
44#define IPL_ECKD_DUMP_STR "eckd_dump"
45#define IPL_FCP_STR "fcp"
46#define IPL_FCP_DUMP_STR "fcp_dump"
47#define IPL_NVME_STR "nvme"
48#define IPL_NVME_DUMP_STR "nvme_dump"
49#define IPL_NSS_STR "nss"
50
51#define DUMP_CCW_STR "ccw"
52#define DUMP_ECKD_STR "eckd"
53#define DUMP_FCP_STR "fcp"
54#define DUMP_NVME_STR "nvme"
55#define DUMP_NONE_STR "none"
56
57/*
58 * Four shutdown trigger types are supported:
59 * - panic
60 * - halt
61 * - power off
62 * - reipl
63 * - restart
64 */
65#define ON_PANIC_STR "on_panic"
66#define ON_HALT_STR "on_halt"
67#define ON_POFF_STR "on_poff"
68#define ON_REIPL_STR "on_reboot"
69#define ON_RESTART_STR "on_restart"
70
71struct shutdown_action;
72struct shutdown_trigger {
73 char *name;
74 struct shutdown_action *action;
75};
76
77/*
78 * The following shutdown action types are supported:
79 */
80#define SHUTDOWN_ACTION_IPL_STR "ipl"
81#define SHUTDOWN_ACTION_REIPL_STR "reipl"
82#define SHUTDOWN_ACTION_DUMP_STR "dump"
83#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd"
84#define SHUTDOWN_ACTION_STOP_STR "stop"
85#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl"
86
87struct shutdown_action {
88 char *name;
89 void (*fn) (struct shutdown_trigger *trigger);
90 int (*init) (void);
91 int init_rc;
92};
93
94static char *ipl_type_str(enum ipl_type type)
95{
96 switch (type) {
97 case IPL_TYPE_CCW:
98 return IPL_CCW_STR;
99 case IPL_TYPE_ECKD:
100 return IPL_ECKD_STR;
101 case IPL_TYPE_ECKD_DUMP:
102 return IPL_ECKD_DUMP_STR;
103 case IPL_TYPE_FCP:
104 return IPL_FCP_STR;
105 case IPL_TYPE_FCP_DUMP:
106 return IPL_FCP_DUMP_STR;
107 case IPL_TYPE_NSS:
108 return IPL_NSS_STR;
109 case IPL_TYPE_NVME:
110 return IPL_NVME_STR;
111 case IPL_TYPE_NVME_DUMP:
112 return IPL_NVME_DUMP_STR;
113 case IPL_TYPE_UNKNOWN:
114 default:
115 return IPL_UNKNOWN_STR;
116 }
117}
118
119enum dump_type {
120 DUMP_TYPE_NONE = 1,
121 DUMP_TYPE_CCW = 2,
122 DUMP_TYPE_FCP = 4,
123 DUMP_TYPE_NVME = 8,
124 DUMP_TYPE_ECKD = 16,
125};
126
127static char *dump_type_str(enum dump_type type)
128{
129 switch (type) {
130 case DUMP_TYPE_NONE:
131 return DUMP_NONE_STR;
132 case DUMP_TYPE_CCW:
133 return DUMP_CCW_STR;
134 case DUMP_TYPE_ECKD:
135 return DUMP_ECKD_STR;
136 case DUMP_TYPE_FCP:
137 return DUMP_FCP_STR;
138 case DUMP_TYPE_NVME:
139 return DUMP_NVME_STR;
140 default:
141 return NULL;
142 }
143}
144
145int __bootdata_preserved(ipl_block_valid);
146struct ipl_parameter_block __bootdata_preserved(ipl_block);
147int __bootdata_preserved(ipl_secure_flag);
148
149unsigned long __bootdata_preserved(ipl_cert_list_addr);
150unsigned long __bootdata_preserved(ipl_cert_list_size);
151
152unsigned long __bootdata(early_ipl_comp_list_addr);
153unsigned long __bootdata(early_ipl_comp_list_size);
154
155static int reipl_capabilities = IPL_TYPE_UNKNOWN;
156
157static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
158static struct ipl_parameter_block *reipl_block_fcp;
159static struct ipl_parameter_block *reipl_block_nvme;
160static struct ipl_parameter_block *reipl_block_ccw;
161static struct ipl_parameter_block *reipl_block_eckd;
162static struct ipl_parameter_block *reipl_block_nss;
163static struct ipl_parameter_block *reipl_block_actual;
164
165static int dump_capabilities = DUMP_TYPE_NONE;
166static enum dump_type dump_type = DUMP_TYPE_NONE;
167static struct ipl_parameter_block *dump_block_fcp;
168static struct ipl_parameter_block *dump_block_nvme;
169static struct ipl_parameter_block *dump_block_ccw;
170static struct ipl_parameter_block *dump_block_eckd;
171
172static struct sclp_ipl_info sclp_ipl_info;
173
174static bool reipl_nvme_clear;
175static bool reipl_fcp_clear;
176static bool reipl_ccw_clear;
177static bool reipl_eckd_clear;
178
179static inline int __diag308(unsigned long subcode, void *addr)
180{
181 union register_pair r1;
182
183 r1.even = (unsigned long) addr;
184 r1.odd = 0;
185 asm volatile(
186 " diag %[r1],%[subcode],0x308\n"
187 "0: nopr %%r7\n"
188 EX_TABLE(0b,0b)
189 : [r1] "+&d" (r1.pair)
190 : [subcode] "d" (subcode)
191 : "cc", "memory");
192 return r1.odd;
193}
194
195int diag308(unsigned long subcode, void *addr)
196{
197 diag_stat_inc(DIAG_STAT_X308);
198 return __diag308(subcode, addr);
199}
200EXPORT_SYMBOL_GPL(diag308);
201
202/* SYSFS */
203
204#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \
205static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
206 struct kobj_attribute *attr, \
207 char *page) \
208{ \
209 return scnprintf(page, PAGE_SIZE, _format, ##args); \
210}
211
212#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \
213static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
214 struct kobj_attribute *attr, \
215 const char *buf, size_t len) \
216{ \
217 unsigned long long ssid, devno; \
218 \
219 if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \
220 return -EINVAL; \
221 \
222 if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \
223 return -EINVAL; \
224 \
225 _ipl_blk.ssid = ssid; \
226 _ipl_blk.devno = devno; \
227 return len; \
228}
229
230#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \
231IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \
232 _ipl_blk.ssid, _ipl_blk.devno); \
233IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \
234static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
235 __ATTR(_name, 0644, \
236 sys_##_prefix##_##_name##_show, \
237 sys_##_prefix##_##_name##_store) \
238
239#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
240IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
241static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
242 __ATTR(_name, 0444, sys_##_prefix##_##_name##_show, NULL)
243
244#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
245IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
246static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
247 struct kobj_attribute *attr, \
248 const char *buf, size_t len) \
249{ \
250 unsigned long long value; \
251 if (sscanf(buf, _fmt_in, &value) != 1) \
252 return -EINVAL; \
253 _value = value; \
254 return len; \
255} \
256static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
257 __ATTR(_name, 0644, \
258 sys_##_prefix##_##_name##_show, \
259 sys_##_prefix##_##_name##_store)
260
261#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
262IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
263static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
264 struct kobj_attribute *attr, \
265 const char *buf, size_t len) \
266{ \
267 strncpy(_value, buf, sizeof(_value) - 1); \
268 strim(_value); \
269 return len; \
270} \
271static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
272 __ATTR(_name, 0644, \
273 sys_##_prefix##_##_name##_show, \
274 sys_##_prefix##_##_name##_store)
275
276/*
277 * ipl section
278 */
279
280static __init enum ipl_type get_ipl_type(void)
281{
282 if (!ipl_block_valid)
283 return IPL_TYPE_UNKNOWN;
284
285 switch (ipl_block.pb0_hdr.pbt) {
286 case IPL_PBT_CCW:
287 return IPL_TYPE_CCW;
288 case IPL_PBT_FCP:
289 if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP)
290 return IPL_TYPE_FCP_DUMP;
291 else
292 return IPL_TYPE_FCP;
293 case IPL_PBT_NVME:
294 if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP)
295 return IPL_TYPE_NVME_DUMP;
296 else
297 return IPL_TYPE_NVME;
298 case IPL_PBT_ECKD:
299 if (ipl_block.eckd.opt == IPL_PB0_ECKD_OPT_DUMP)
300 return IPL_TYPE_ECKD_DUMP;
301 else
302 return IPL_TYPE_ECKD;
303 }
304 return IPL_TYPE_UNKNOWN;
305}
306
307struct ipl_info ipl_info;
308EXPORT_SYMBOL_GPL(ipl_info);
309
310static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr,
311 char *page)
312{
313 return sprintf(page, "%s\n", ipl_type_str(ipl_info.type));
314}
315
316static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
317
318static ssize_t ipl_secure_show(struct kobject *kobj,
319 struct kobj_attribute *attr, char *page)
320{
321 return sprintf(page, "%i\n", !!ipl_secure_flag);
322}
323
324static struct kobj_attribute sys_ipl_secure_attr =
325 __ATTR(secure, 0444, ipl_secure_show, NULL);
326
327static ssize_t ipl_has_secure_show(struct kobject *kobj,
328 struct kobj_attribute *attr, char *page)
329{
330 return sprintf(page, "%i\n", !!sclp.has_sipl);
331}
332
333static struct kobj_attribute sys_ipl_has_secure_attr =
334 __ATTR(has_secure, 0444, ipl_has_secure_show, NULL);
335
336static ssize_t ipl_vm_parm_show(struct kobject *kobj,
337 struct kobj_attribute *attr, char *page)
338{
339 char parm[DIAG308_VMPARM_SIZE + 1] = {};
340
341 if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW))
342 ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block);
343 return sprintf(page, "%s\n", parm);
344}
345
346static struct kobj_attribute sys_ipl_vm_parm_attr =
347 __ATTR(parm, 0444, ipl_vm_parm_show, NULL);
348
349static ssize_t sys_ipl_device_show(struct kobject *kobj,
350 struct kobj_attribute *attr, char *page)
351{
352 switch (ipl_info.type) {
353 case IPL_TYPE_CCW:
354 return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid,
355 ipl_block.ccw.devno);
356 case IPL_TYPE_ECKD:
357 case IPL_TYPE_ECKD_DUMP:
358 return sprintf(page, "0.%x.%04x\n", ipl_block.eckd.ssid,
359 ipl_block.eckd.devno);
360 case IPL_TYPE_FCP:
361 case IPL_TYPE_FCP_DUMP:
362 return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
363 case IPL_TYPE_NVME:
364 case IPL_TYPE_NVME_DUMP:
365 return sprintf(page, "%08ux\n", ipl_block.nvme.fid);
366 default:
367 return 0;
368 }
369}
370
371static struct kobj_attribute sys_ipl_device_attr =
372 __ATTR(device, 0444, sys_ipl_device_show, NULL);
373
374static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
375 struct bin_attribute *attr, char *buf,
376 loff_t off, size_t count)
377{
378 return memory_read_from_buffer(buf, count, &off, &ipl_block,
379 ipl_block.hdr.len);
380}
381static struct bin_attribute ipl_parameter_attr =
382 __BIN_ATTR(binary_parameter, 0444, ipl_parameter_read, NULL,
383 PAGE_SIZE);
384
385static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
386 struct bin_attribute *attr, char *buf,
387 loff_t off, size_t count)
388{
389 unsigned int size = ipl_block.fcp.scp_data_len;
390 void *scp_data = &ipl_block.fcp.scp_data;
391
392 return memory_read_from_buffer(buf, count, &off, scp_data, size);
393}
394
395static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj,
396 struct bin_attribute *attr, char *buf,
397 loff_t off, size_t count)
398{
399 unsigned int size = ipl_block.nvme.scp_data_len;
400 void *scp_data = &ipl_block.nvme.scp_data;
401
402 return memory_read_from_buffer(buf, count, &off, scp_data, size);
403}
404
405static ssize_t ipl_eckd_scp_data_read(struct file *filp, struct kobject *kobj,
406 struct bin_attribute *attr, char *buf,
407 loff_t off, size_t count)
408{
409 unsigned int size = ipl_block.eckd.scp_data_len;
410 void *scp_data = &ipl_block.eckd.scp_data;
411
412 return memory_read_from_buffer(buf, count, &off, scp_data, size);
413}
414
415static struct bin_attribute ipl_scp_data_attr =
416 __BIN_ATTR(scp_data, 0444, ipl_scp_data_read, NULL, PAGE_SIZE);
417
418static struct bin_attribute ipl_nvme_scp_data_attr =
419 __BIN_ATTR(scp_data, 0444, ipl_nvme_scp_data_read, NULL, PAGE_SIZE);
420
421static struct bin_attribute ipl_eckd_scp_data_attr =
422 __BIN_ATTR(scp_data, 0444, ipl_eckd_scp_data_read, NULL, PAGE_SIZE);
423
424static struct bin_attribute *ipl_fcp_bin_attrs[] = {
425 &ipl_parameter_attr,
426 &ipl_scp_data_attr,
427 NULL,
428};
429
430static struct bin_attribute *ipl_nvme_bin_attrs[] = {
431 &ipl_parameter_attr,
432 &ipl_nvme_scp_data_attr,
433 NULL,
434};
435
436static struct bin_attribute *ipl_eckd_bin_attrs[] = {
437 &ipl_parameter_attr,
438 &ipl_eckd_scp_data_attr,
439 NULL,
440};
441
442/* FCP ipl device attributes */
443
444DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
445 (unsigned long long)ipl_block.fcp.wwpn);
446DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n",
447 (unsigned long long)ipl_block.fcp.lun);
448DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
449 (unsigned long long)ipl_block.fcp.bootprog);
450DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
451 (unsigned long long)ipl_block.fcp.br_lba);
452
453/* NVMe ipl device attributes */
454DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n",
455 (unsigned long long)ipl_block.nvme.fid);
456DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n",
457 (unsigned long long)ipl_block.nvme.nsid);
458DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n",
459 (unsigned long long)ipl_block.nvme.bootprog);
460DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n",
461 (unsigned long long)ipl_block.nvme.br_lba);
462
463/* ECKD ipl device attributes */
464DEFINE_IPL_ATTR_RO(ipl_eckd, bootprog, "%lld\n",
465 (unsigned long long)ipl_block.eckd.bootprog);
466
467#define IPL_ATTR_BR_CHR_SHOW_FN(_name, _ipb) \
468static ssize_t eckd_##_name##_br_chr_show(struct kobject *kobj, \
469 struct kobj_attribute *attr, \
470 char *buf) \
471{ \
472 struct ipl_pb0_eckd *ipb = &(_ipb); \
473 \
474 if (!ipb->br_chr.cyl && \
475 !ipb->br_chr.head && \
476 !ipb->br_chr.record) \
477 return sprintf(buf, "auto\n"); \
478 \
479 return sprintf(buf, "0x%x,0x%x,0x%x\n", \
480 ipb->br_chr.cyl, \
481 ipb->br_chr.head, \
482 ipb->br_chr.record); \
483}
484
485#define IPL_ATTR_BR_CHR_STORE_FN(_name, _ipb) \
486static ssize_t eckd_##_name##_br_chr_store(struct kobject *kobj, \
487 struct kobj_attribute *attr, \
488 const char *buf, size_t len) \
489{ \
490 struct ipl_pb0_eckd *ipb = &(_ipb); \
491 unsigned long args[3] = { 0 }; \
492 char *p, *p1, *tmp = NULL; \
493 int i, rc; \
494 \
495 if (!strncmp(buf, "auto", 4)) \
496 goto out; \
497 \
498 tmp = kstrdup(buf, GFP_KERNEL); \
499 p = tmp; \
500 for (i = 0; i < 3; i++) { \
501 p1 = strsep(&p, ", "); \
502 if (!p1) { \
503 rc = -EINVAL; \
504 goto err; \
505 } \
506 rc = kstrtoul(p1, 0, args + i); \
507 if (rc) \
508 goto err; \
509 } \
510 \
511 rc = -EINVAL; \
512 if (i != 3) \
513 goto err; \
514 \
515 if ((args[0] || args[1]) && !args[2]) \
516 goto err; \
517 \
518 if (args[0] > UINT_MAX || args[1] > 255 || args[2] > 255) \
519 goto err; \
520 \
521out: \
522 ipb->br_chr.cyl = args[0]; \
523 ipb->br_chr.head = args[1]; \
524 ipb->br_chr.record = args[2]; \
525 rc = len; \
526err: \
527 kfree(tmp); \
528 return rc; \
529}
530
531IPL_ATTR_BR_CHR_SHOW_FN(ipl, ipl_block.eckd);
532static struct kobj_attribute sys_ipl_eckd_br_chr_attr =
533 __ATTR(br_chr, 0644, eckd_ipl_br_chr_show, NULL);
534
535IPL_ATTR_BR_CHR_SHOW_FN(reipl, reipl_block_eckd->eckd);
536IPL_ATTR_BR_CHR_STORE_FN(reipl, reipl_block_eckd->eckd);
537
538static struct kobj_attribute sys_reipl_eckd_br_chr_attr =
539 __ATTR(br_chr, 0644, eckd_reipl_br_chr_show, eckd_reipl_br_chr_store);
540
541static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
542 struct kobj_attribute *attr, char *page)
543{
544 char loadparm[LOADPARM_LEN + 1] = {};
545
546 if (!sclp_ipl_info.is_valid)
547 return sprintf(page, "#unknown#\n");
548 memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
549 EBCASC(loadparm, LOADPARM_LEN);
550 strim(loadparm);
551 return sprintf(page, "%s\n", loadparm);
552}
553
554static struct kobj_attribute sys_ipl_ccw_loadparm_attr =
555 __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
556
557static struct attribute *ipl_fcp_attrs[] = {
558 &sys_ipl_type_attr.attr,
559 &sys_ipl_device_attr.attr,
560 &sys_ipl_fcp_wwpn_attr.attr,
561 &sys_ipl_fcp_lun_attr.attr,
562 &sys_ipl_fcp_bootprog_attr.attr,
563 &sys_ipl_fcp_br_lba_attr.attr,
564 &sys_ipl_ccw_loadparm_attr.attr,
565 &sys_ipl_secure_attr.attr,
566 &sys_ipl_has_secure_attr.attr,
567 NULL,
568};
569
570static struct attribute_group ipl_fcp_attr_group = {
571 .attrs = ipl_fcp_attrs,
572 .bin_attrs = ipl_fcp_bin_attrs,
573};
574
575static struct attribute *ipl_nvme_attrs[] = {
576 &sys_ipl_type_attr.attr,
577 &sys_ipl_nvme_fid_attr.attr,
578 &sys_ipl_nvme_nsid_attr.attr,
579 &sys_ipl_nvme_bootprog_attr.attr,
580 &sys_ipl_nvme_br_lba_attr.attr,
581 &sys_ipl_ccw_loadparm_attr.attr,
582 &sys_ipl_secure_attr.attr,
583 &sys_ipl_has_secure_attr.attr,
584 NULL,
585};
586
587static struct attribute_group ipl_nvme_attr_group = {
588 .attrs = ipl_nvme_attrs,
589 .bin_attrs = ipl_nvme_bin_attrs,
590};
591
592static struct attribute *ipl_eckd_attrs[] = {
593 &sys_ipl_type_attr.attr,
594 &sys_ipl_eckd_bootprog_attr.attr,
595 &sys_ipl_eckd_br_chr_attr.attr,
596 &sys_ipl_device_attr.attr,
597 &sys_ipl_secure_attr.attr,
598 &sys_ipl_has_secure_attr.attr,
599 NULL,
600};
601
602static struct attribute_group ipl_eckd_attr_group = {
603 .attrs = ipl_eckd_attrs,
604 .bin_attrs = ipl_eckd_bin_attrs,
605};
606
607/* CCW ipl device attributes */
608
609static struct attribute *ipl_ccw_attrs_vm[] = {
610 &sys_ipl_type_attr.attr,
611 &sys_ipl_device_attr.attr,
612 &sys_ipl_ccw_loadparm_attr.attr,
613 &sys_ipl_vm_parm_attr.attr,
614 &sys_ipl_secure_attr.attr,
615 &sys_ipl_has_secure_attr.attr,
616 NULL,
617};
618
619static struct attribute *ipl_ccw_attrs_lpar[] = {
620 &sys_ipl_type_attr.attr,
621 &sys_ipl_device_attr.attr,
622 &sys_ipl_ccw_loadparm_attr.attr,
623 &sys_ipl_secure_attr.attr,
624 &sys_ipl_has_secure_attr.attr,
625 NULL,
626};
627
628static struct attribute_group ipl_ccw_attr_group_vm = {
629 .attrs = ipl_ccw_attrs_vm,
630};
631
632static struct attribute_group ipl_ccw_attr_group_lpar = {
633 .attrs = ipl_ccw_attrs_lpar
634};
635
636/* UNKNOWN ipl device attributes */
637
638static struct attribute *ipl_unknown_attrs[] = {
639 &sys_ipl_type_attr.attr,
640 NULL,
641};
642
643static struct attribute_group ipl_unknown_attr_group = {
644 .attrs = ipl_unknown_attrs,
645};
646
647static struct kset *ipl_kset;
648
649static void __ipl_run(void *unused)
650{
651 __bpon();
652 diag308(DIAG308_LOAD_CLEAR, NULL);
653}
654
655static void ipl_run(struct shutdown_trigger *trigger)
656{
657 smp_call_ipl_cpu(__ipl_run, NULL);
658}
659
660static int __init ipl_init(void)
661{
662 int rc;
663
664 ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj);
665 if (!ipl_kset) {
666 rc = -ENOMEM;
667 goto out;
668 }
669 switch (ipl_info.type) {
670 case IPL_TYPE_CCW:
671 if (MACHINE_IS_VM)
672 rc = sysfs_create_group(&ipl_kset->kobj,
673 &ipl_ccw_attr_group_vm);
674 else
675 rc = sysfs_create_group(&ipl_kset->kobj,
676 &ipl_ccw_attr_group_lpar);
677 break;
678 case IPL_TYPE_ECKD:
679 rc = sysfs_create_group(&ipl_kset->kobj, &ipl_eckd_attr_group);
680 break;
681 case IPL_TYPE_FCP:
682 case IPL_TYPE_FCP_DUMP:
683 rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
684 break;
685 case IPL_TYPE_NVME:
686 case IPL_TYPE_NVME_DUMP:
687 rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nvme_attr_group);
688 break;
689 default:
690 rc = sysfs_create_group(&ipl_kset->kobj,
691 &ipl_unknown_attr_group);
692 break;
693 }
694out:
695 if (rc)
696 panic("ipl_init failed: rc = %i\n", rc);
697
698 return 0;
699}
700
701static struct shutdown_action __refdata ipl_action = {
702 .name = SHUTDOWN_ACTION_IPL_STR,
703 .fn = ipl_run,
704 .init = ipl_init,
705};
706
707/*
708 * reipl shutdown action: Reboot Linux on shutdown.
709 */
710
711/* VM IPL PARM attributes */
712static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb,
713 char *page)
714{
715 char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
716
717 ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb);
718 return sprintf(page, "%s\n", vmparm);
719}
720
721static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
722 size_t vmparm_max,
723 const char *buf, size_t len)
724{
725 int i, ip_len;
726
727 /* ignore trailing newline */
728 ip_len = len;
729 if ((len > 0) && (buf[len - 1] == '\n'))
730 ip_len--;
731
732 if (ip_len > vmparm_max)
733 return -EINVAL;
734
735 /* parm is used to store kernel options, check for common chars */
736 for (i = 0; i < ip_len; i++)
737 if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
738 return -EINVAL;
739
740 memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
741 ipb->ccw.vm_parm_len = ip_len;
742 if (ip_len > 0) {
743 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
744 memcpy(ipb->ccw.vm_parm, buf, ip_len);
745 ASCEBC(ipb->ccw.vm_parm, ip_len);
746 } else {
747 ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP;
748 }
749
750 return len;
751}
752
753/* NSS wrapper */
754static ssize_t reipl_nss_vmparm_show(struct kobject *kobj,
755 struct kobj_attribute *attr, char *page)
756{
757 return reipl_generic_vmparm_show(reipl_block_nss, page);
758}
759
760static ssize_t reipl_nss_vmparm_store(struct kobject *kobj,
761 struct kobj_attribute *attr,
762 const char *buf, size_t len)
763{
764 return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len);
765}
766
767/* CCW wrapper */
768static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj,
769 struct kobj_attribute *attr, char *page)
770{
771 return reipl_generic_vmparm_show(reipl_block_ccw, page);
772}
773
774static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj,
775 struct kobj_attribute *attr,
776 const char *buf, size_t len)
777{
778 return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
779}
780
781static struct kobj_attribute sys_reipl_nss_vmparm_attr =
782 __ATTR(parm, 0644, reipl_nss_vmparm_show,
783 reipl_nss_vmparm_store);
784static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
785 __ATTR(parm, 0644, reipl_ccw_vmparm_show,
786 reipl_ccw_vmparm_store);
787
788/* FCP reipl device attributes */
789
790static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
791 struct bin_attribute *attr,
792 char *buf, loff_t off, size_t count)
793{
794 size_t size = reipl_block_fcp->fcp.scp_data_len;
795 void *scp_data = reipl_block_fcp->fcp.scp_data;
796
797 return memory_read_from_buffer(buf, count, &off, scp_data, size);
798}
799
800static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
801 struct bin_attribute *attr,
802 char *buf, loff_t off, size_t count)
803{
804 size_t scpdata_len = count;
805 size_t padding;
806
807
808 if (off)
809 return -EINVAL;
810
811 memcpy(reipl_block_fcp->fcp.scp_data, buf, count);
812 if (scpdata_len % 8) {
813 padding = 8 - (scpdata_len % 8);
814 memset(reipl_block_fcp->fcp.scp_data + scpdata_len,
815 0, padding);
816 scpdata_len += padding;
817 }
818
819 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
820 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len;
821 reipl_block_fcp->fcp.scp_data_len = scpdata_len;
822
823 return count;
824}
825static struct bin_attribute sys_reipl_fcp_scp_data_attr =
826 __BIN_ATTR(scp_data, 0644, reipl_fcp_scpdata_read,
827 reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE);
828
829static struct bin_attribute *reipl_fcp_bin_attrs[] = {
830 &sys_reipl_fcp_scp_data_attr,
831 NULL,
832};
833
834DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
835 reipl_block_fcp->fcp.wwpn);
836DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
837 reipl_block_fcp->fcp.lun);
838DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
839 reipl_block_fcp->fcp.bootprog);
840DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
841 reipl_block_fcp->fcp.br_lba);
842DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
843 reipl_block_fcp->fcp.devno);
844
845static void reipl_get_ascii_loadparm(char *loadparm,
846 struct ipl_parameter_block *ibp)
847{
848 memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN);
849 EBCASC(loadparm, LOADPARM_LEN);
850 loadparm[LOADPARM_LEN] = 0;
851 strim(loadparm);
852}
853
854static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
855 char *page)
856{
857 char buf[LOADPARM_LEN + 1];
858
859 reipl_get_ascii_loadparm(buf, ipb);
860 return sprintf(page, "%s\n", buf);
861}
862
863static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
864 const char *buf, size_t len)
865{
866 int i, lp_len;
867
868 /* ignore trailing newline */
869 lp_len = len;
870 if ((len > 0) && (buf[len - 1] == '\n'))
871 lp_len--;
872 /* loadparm can have max 8 characters and must not start with a blank */
873 if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
874 return -EINVAL;
875 /* loadparm can only contain "a-z,A-Z,0-9,SP,." */
876 for (i = 0; i < lp_len; i++) {
877 if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
878 (buf[i] == '.'))
879 continue;
880 return -EINVAL;
881 }
882 /* initialize loadparm with blanks */
883 memset(ipb->common.loadparm, ' ', LOADPARM_LEN);
884 /* copy and convert to ebcdic */
885 memcpy(ipb->common.loadparm, buf, lp_len);
886 ASCEBC(ipb->common.loadparm, LOADPARM_LEN);
887 ipb->common.flags |= IPL_PB0_FLAG_LOADPARM;
888 return len;
889}
890
891/* FCP wrapper */
892static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj,
893 struct kobj_attribute *attr, char *page)
894{
895 return reipl_generic_loadparm_show(reipl_block_fcp, page);
896}
897
898static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj,
899 struct kobj_attribute *attr,
900 const char *buf, size_t len)
901{
902 return reipl_generic_loadparm_store(reipl_block_fcp, buf, len);
903}
904
905static struct kobj_attribute sys_reipl_fcp_loadparm_attr =
906 __ATTR(loadparm, 0644, reipl_fcp_loadparm_show,
907 reipl_fcp_loadparm_store);
908
909static ssize_t reipl_fcp_clear_show(struct kobject *kobj,
910 struct kobj_attribute *attr, char *page)
911{
912 return sprintf(page, "%u\n", reipl_fcp_clear);
913}
914
915static ssize_t reipl_fcp_clear_store(struct kobject *kobj,
916 struct kobj_attribute *attr,
917 const char *buf, size_t len)
918{
919 if (kstrtobool(buf, &reipl_fcp_clear) < 0)
920 return -EINVAL;
921 return len;
922}
923
924static struct attribute *reipl_fcp_attrs[] = {
925 &sys_reipl_fcp_device_attr.attr,
926 &sys_reipl_fcp_wwpn_attr.attr,
927 &sys_reipl_fcp_lun_attr.attr,
928 &sys_reipl_fcp_bootprog_attr.attr,
929 &sys_reipl_fcp_br_lba_attr.attr,
930 &sys_reipl_fcp_loadparm_attr.attr,
931 NULL,
932};
933
934static struct attribute_group reipl_fcp_attr_group = {
935 .attrs = reipl_fcp_attrs,
936 .bin_attrs = reipl_fcp_bin_attrs,
937};
938
939static struct kobj_attribute sys_reipl_fcp_clear_attr =
940 __ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store);
941
942/* NVME reipl device attributes */
943
944static ssize_t reipl_nvme_scpdata_read(struct file *filp, struct kobject *kobj,
945 struct bin_attribute *attr,
946 char *buf, loff_t off, size_t count)
947{
948 size_t size = reipl_block_nvme->nvme.scp_data_len;
949 void *scp_data = reipl_block_nvme->nvme.scp_data;
950
951 return memory_read_from_buffer(buf, count, &off, scp_data, size);
952}
953
954static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj,
955 struct bin_attribute *attr,
956 char *buf, loff_t off, size_t count)
957{
958 size_t scpdata_len = count;
959 size_t padding;
960
961 if (off)
962 return -EINVAL;
963
964 memcpy(reipl_block_nvme->nvme.scp_data, buf, count);
965 if (scpdata_len % 8) {
966 padding = 8 - (scpdata_len % 8);
967 memset(reipl_block_nvme->nvme.scp_data + scpdata_len,
968 0, padding);
969 scpdata_len += padding;
970 }
971
972 reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
973 reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len;
974 reipl_block_nvme->nvme.scp_data_len = scpdata_len;
975
976 return count;
977}
978
979static struct bin_attribute sys_reipl_nvme_scp_data_attr =
980 __BIN_ATTR(scp_data, 0644, reipl_nvme_scpdata_read,
981 reipl_nvme_scpdata_write, DIAG308_SCPDATA_SIZE);
982
983static struct bin_attribute *reipl_nvme_bin_attrs[] = {
984 &sys_reipl_nvme_scp_data_attr,
985 NULL,
986};
987
988DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n",
989 reipl_block_nvme->nvme.fid);
990DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n",
991 reipl_block_nvme->nvme.nsid);
992DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
993 reipl_block_nvme->nvme.bootprog);
994DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n",
995 reipl_block_nvme->nvme.br_lba);
996
997/* nvme wrapper */
998static ssize_t reipl_nvme_loadparm_show(struct kobject *kobj,
999 struct kobj_attribute *attr, char *page)
1000{
1001 return reipl_generic_loadparm_show(reipl_block_nvme, page);
1002}
1003
1004static ssize_t reipl_nvme_loadparm_store(struct kobject *kobj,
1005 struct kobj_attribute *attr,
1006 const char *buf, size_t len)
1007{
1008 return reipl_generic_loadparm_store(reipl_block_nvme, buf, len);
1009}
1010
1011static struct kobj_attribute sys_reipl_nvme_loadparm_attr =
1012 __ATTR(loadparm, 0644, reipl_nvme_loadparm_show,
1013 reipl_nvme_loadparm_store);
1014
1015static struct attribute *reipl_nvme_attrs[] = {
1016 &sys_reipl_nvme_fid_attr.attr,
1017 &sys_reipl_nvme_nsid_attr.attr,
1018 &sys_reipl_nvme_bootprog_attr.attr,
1019 &sys_reipl_nvme_br_lba_attr.attr,
1020 &sys_reipl_nvme_loadparm_attr.attr,
1021 NULL,
1022};
1023
1024static struct attribute_group reipl_nvme_attr_group = {
1025 .attrs = reipl_nvme_attrs,
1026 .bin_attrs = reipl_nvme_bin_attrs
1027};
1028
1029static ssize_t reipl_nvme_clear_show(struct kobject *kobj,
1030 struct kobj_attribute *attr, char *page)
1031{
1032 return sprintf(page, "%u\n", reipl_nvme_clear);
1033}
1034
1035static ssize_t reipl_nvme_clear_store(struct kobject *kobj,
1036 struct kobj_attribute *attr,
1037 const char *buf, size_t len)
1038{
1039 if (kstrtobool(buf, &reipl_nvme_clear) < 0)
1040 return -EINVAL;
1041 return len;
1042}
1043
1044static struct kobj_attribute sys_reipl_nvme_clear_attr =
1045 __ATTR(clear, 0644, reipl_nvme_clear_show, reipl_nvme_clear_store);
1046
1047/* CCW reipl device attributes */
1048DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
1049
1050/* NSS wrapper */
1051static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
1052 struct kobj_attribute *attr, char *page)
1053{
1054 return reipl_generic_loadparm_show(reipl_block_nss, page);
1055}
1056
1057static ssize_t reipl_nss_loadparm_store(struct kobject *kobj,
1058 struct kobj_attribute *attr,
1059 const char *buf, size_t len)
1060{
1061 return reipl_generic_loadparm_store(reipl_block_nss, buf, len);
1062}
1063
1064/* CCW wrapper */
1065static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
1066 struct kobj_attribute *attr, char *page)
1067{
1068 return reipl_generic_loadparm_show(reipl_block_ccw, page);
1069}
1070
1071static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
1072 struct kobj_attribute *attr,
1073 const char *buf, size_t len)
1074{
1075 return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
1076}
1077
1078static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
1079 __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
1080 reipl_ccw_loadparm_store);
1081
1082static ssize_t reipl_ccw_clear_show(struct kobject *kobj,
1083 struct kobj_attribute *attr, char *page)
1084{
1085 return sprintf(page, "%u\n", reipl_ccw_clear);
1086}
1087
1088static ssize_t reipl_ccw_clear_store(struct kobject *kobj,
1089 struct kobj_attribute *attr,
1090 const char *buf, size_t len)
1091{
1092 if (kstrtobool(buf, &reipl_ccw_clear) < 0)
1093 return -EINVAL;
1094 return len;
1095}
1096
1097static struct kobj_attribute sys_reipl_ccw_clear_attr =
1098 __ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store);
1099
1100static struct attribute *reipl_ccw_attrs_vm[] = {
1101 &sys_reipl_ccw_device_attr.attr,
1102 &sys_reipl_ccw_loadparm_attr.attr,
1103 &sys_reipl_ccw_vmparm_attr.attr,
1104 &sys_reipl_ccw_clear_attr.attr,
1105 NULL,
1106};
1107
1108static struct attribute *reipl_ccw_attrs_lpar[] = {
1109 &sys_reipl_ccw_device_attr.attr,
1110 &sys_reipl_ccw_loadparm_attr.attr,
1111 &sys_reipl_ccw_clear_attr.attr,
1112 NULL,
1113};
1114
1115static struct attribute_group reipl_ccw_attr_group_vm = {
1116 .name = IPL_CCW_STR,
1117 .attrs = reipl_ccw_attrs_vm,
1118};
1119
1120static struct attribute_group reipl_ccw_attr_group_lpar = {
1121 .name = IPL_CCW_STR,
1122 .attrs = reipl_ccw_attrs_lpar,
1123};
1124
1125/* ECKD reipl device attributes */
1126
1127static ssize_t reipl_eckd_scpdata_read(struct file *filp, struct kobject *kobj,
1128 struct bin_attribute *attr,
1129 char *buf, loff_t off, size_t count)
1130{
1131 size_t size = reipl_block_eckd->eckd.scp_data_len;
1132 void *scp_data = reipl_block_eckd->eckd.scp_data;
1133
1134 return memory_read_from_buffer(buf, count, &off, scp_data, size);
1135}
1136
1137static ssize_t reipl_eckd_scpdata_write(struct file *filp, struct kobject *kobj,
1138 struct bin_attribute *attr,
1139 char *buf, loff_t off, size_t count)
1140{
1141 size_t scpdata_len = count;
1142 size_t padding;
1143
1144 if (off)
1145 return -EINVAL;
1146
1147 memcpy(reipl_block_eckd->eckd.scp_data, buf, count);
1148 if (scpdata_len % 8) {
1149 padding = 8 - (scpdata_len % 8);
1150 memset(reipl_block_eckd->eckd.scp_data + scpdata_len,
1151 0, padding);
1152 scpdata_len += padding;
1153 }
1154
1155 reipl_block_eckd->hdr.len = IPL_BP_ECKD_LEN + scpdata_len;
1156 reipl_block_eckd->eckd.len = IPL_BP0_ECKD_LEN + scpdata_len;
1157 reipl_block_eckd->eckd.scp_data_len = scpdata_len;
1158
1159 return count;
1160}
1161
1162static struct bin_attribute sys_reipl_eckd_scp_data_attr =
1163 __BIN_ATTR(scp_data, 0644, reipl_eckd_scpdata_read,
1164 reipl_eckd_scpdata_write, DIAG308_SCPDATA_SIZE);
1165
1166static struct bin_attribute *reipl_eckd_bin_attrs[] = {
1167 &sys_reipl_eckd_scp_data_attr,
1168 NULL,
1169};
1170
1171DEFINE_IPL_CCW_ATTR_RW(reipl_eckd, device, reipl_block_eckd->eckd);
1172DEFINE_IPL_ATTR_RW(reipl_eckd, bootprog, "%lld\n", "%lld\n",
1173 reipl_block_eckd->eckd.bootprog);
1174
1175static struct attribute *reipl_eckd_attrs[] = {
1176 &sys_reipl_eckd_device_attr.attr,
1177 &sys_reipl_eckd_bootprog_attr.attr,
1178 &sys_reipl_eckd_br_chr_attr.attr,
1179 NULL,
1180};
1181
1182static struct attribute_group reipl_eckd_attr_group = {
1183 .attrs = reipl_eckd_attrs,
1184 .bin_attrs = reipl_eckd_bin_attrs
1185};
1186
1187static ssize_t reipl_eckd_clear_show(struct kobject *kobj,
1188 struct kobj_attribute *attr, char *page)
1189{
1190 return sprintf(page, "%u\n", reipl_eckd_clear);
1191}
1192
1193static ssize_t reipl_eckd_clear_store(struct kobject *kobj,
1194 struct kobj_attribute *attr,
1195 const char *buf, size_t len)
1196{
1197 if (strtobool(buf, &reipl_eckd_clear) < 0)
1198 return -EINVAL;
1199 return len;
1200}
1201
1202static struct kobj_attribute sys_reipl_eckd_clear_attr =
1203 __ATTR(clear, 0644, reipl_eckd_clear_show, reipl_eckd_clear_store);
1204
1205/* NSS reipl device attributes */
1206static void reipl_get_ascii_nss_name(char *dst,
1207 struct ipl_parameter_block *ipb)
1208{
1209 memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE);
1210 EBCASC(dst, NSS_NAME_SIZE);
1211 dst[NSS_NAME_SIZE] = 0;
1212}
1213
1214static ssize_t reipl_nss_name_show(struct kobject *kobj,
1215 struct kobj_attribute *attr, char *page)
1216{
1217 char nss_name[NSS_NAME_SIZE + 1] = {};
1218
1219 reipl_get_ascii_nss_name(nss_name, reipl_block_nss);
1220 return sprintf(page, "%s\n", nss_name);
1221}
1222
1223static ssize_t reipl_nss_name_store(struct kobject *kobj,
1224 struct kobj_attribute *attr,
1225 const char *buf, size_t len)
1226{
1227 int nss_len;
1228
1229 /* ignore trailing newline */
1230 nss_len = len;
1231 if ((len > 0) && (buf[len - 1] == '\n'))
1232 nss_len--;
1233
1234 if (nss_len > NSS_NAME_SIZE)
1235 return -EINVAL;
1236
1237 memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE);
1238 if (nss_len > 0) {
1239 reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS;
1240 memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len);
1241 ASCEBC(reipl_block_nss->ccw.nss_name, nss_len);
1242 EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len);
1243 } else {
1244 reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS;
1245 }
1246
1247 return len;
1248}
1249
1250static struct kobj_attribute sys_reipl_nss_name_attr =
1251 __ATTR(name, 0644, reipl_nss_name_show,
1252 reipl_nss_name_store);
1253
1254static struct kobj_attribute sys_reipl_nss_loadparm_attr =
1255 __ATTR(loadparm, 0644, reipl_nss_loadparm_show,
1256 reipl_nss_loadparm_store);
1257
1258static struct attribute *reipl_nss_attrs[] = {
1259 &sys_reipl_nss_name_attr.attr,
1260 &sys_reipl_nss_loadparm_attr.attr,
1261 &sys_reipl_nss_vmparm_attr.attr,
1262 NULL,
1263};
1264
1265static struct attribute_group reipl_nss_attr_group = {
1266 .name = IPL_NSS_STR,
1267 .attrs = reipl_nss_attrs,
1268};
1269
1270void set_os_info_reipl_block(void)
1271{
1272 os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual,
1273 reipl_block_actual->hdr.len);
1274}
1275
1276/* reipl type */
1277
1278static int reipl_set_type(enum ipl_type type)
1279{
1280 if (!(reipl_capabilities & type))
1281 return -EINVAL;
1282
1283 switch(type) {
1284 case IPL_TYPE_CCW:
1285 reipl_block_actual = reipl_block_ccw;
1286 break;
1287 case IPL_TYPE_ECKD:
1288 reipl_block_actual = reipl_block_eckd;
1289 break;
1290 case IPL_TYPE_FCP:
1291 reipl_block_actual = reipl_block_fcp;
1292 break;
1293 case IPL_TYPE_NVME:
1294 reipl_block_actual = reipl_block_nvme;
1295 break;
1296 case IPL_TYPE_NSS:
1297 reipl_block_actual = reipl_block_nss;
1298 break;
1299 default:
1300 break;
1301 }
1302 reipl_type = type;
1303 return 0;
1304}
1305
1306static ssize_t reipl_type_show(struct kobject *kobj,
1307 struct kobj_attribute *attr, char *page)
1308{
1309 return sprintf(page, "%s\n", ipl_type_str(reipl_type));
1310}
1311
1312static ssize_t reipl_type_store(struct kobject *kobj,
1313 struct kobj_attribute *attr,
1314 const char *buf, size_t len)
1315{
1316 int rc = -EINVAL;
1317
1318 if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
1319 rc = reipl_set_type(IPL_TYPE_CCW);
1320 else if (strncmp(buf, IPL_ECKD_STR, strlen(IPL_ECKD_STR)) == 0)
1321 rc = reipl_set_type(IPL_TYPE_ECKD);
1322 else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
1323 rc = reipl_set_type(IPL_TYPE_FCP);
1324 else if (strncmp(buf, IPL_NVME_STR, strlen(IPL_NVME_STR)) == 0)
1325 rc = reipl_set_type(IPL_TYPE_NVME);
1326 else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0)
1327 rc = reipl_set_type(IPL_TYPE_NSS);
1328 return (rc != 0) ? rc : len;
1329}
1330
1331static struct kobj_attribute reipl_type_attr =
1332 __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
1333
1334static struct kset *reipl_kset;
1335static struct kset *reipl_fcp_kset;
1336static struct kset *reipl_nvme_kset;
1337static struct kset *reipl_eckd_kset;
1338
1339static void __reipl_run(void *unused)
1340{
1341 switch (reipl_type) {
1342 case IPL_TYPE_CCW:
1343 diag308(DIAG308_SET, reipl_block_ccw);
1344 if (reipl_ccw_clear)
1345 diag308(DIAG308_LOAD_CLEAR, NULL);
1346 else
1347 diag308(DIAG308_LOAD_NORMAL_DUMP, NULL);
1348 break;
1349 case IPL_TYPE_ECKD:
1350 diag308(DIAG308_SET, reipl_block_eckd);
1351 if (reipl_eckd_clear)
1352 diag308(DIAG308_LOAD_CLEAR, NULL);
1353 else
1354 diag308(DIAG308_LOAD_NORMAL, NULL);
1355 break;
1356 case IPL_TYPE_FCP:
1357 diag308(DIAG308_SET, reipl_block_fcp);
1358 if (reipl_fcp_clear)
1359 diag308(DIAG308_LOAD_CLEAR, NULL);
1360 else
1361 diag308(DIAG308_LOAD_NORMAL, NULL);
1362 break;
1363 case IPL_TYPE_NVME:
1364 diag308(DIAG308_SET, reipl_block_nvme);
1365 if (reipl_nvme_clear)
1366 diag308(DIAG308_LOAD_CLEAR, NULL);
1367 else
1368 diag308(DIAG308_LOAD_NORMAL, NULL);
1369 break;
1370 case IPL_TYPE_NSS:
1371 diag308(DIAG308_SET, reipl_block_nss);
1372 diag308(DIAG308_LOAD_CLEAR, NULL);
1373 break;
1374 case IPL_TYPE_UNKNOWN:
1375 diag308(DIAG308_LOAD_CLEAR, NULL);
1376 break;
1377 case IPL_TYPE_FCP_DUMP:
1378 case IPL_TYPE_NVME_DUMP:
1379 case IPL_TYPE_ECKD_DUMP:
1380 break;
1381 }
1382 disabled_wait();
1383}
1384
1385static void reipl_run(struct shutdown_trigger *trigger)
1386{
1387 smp_call_ipl_cpu(__reipl_run, NULL);
1388}
1389
1390static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
1391{
1392 ipb->hdr.len = IPL_BP_CCW_LEN;
1393 ipb->hdr.version = IPL_PARM_BLOCK_VERSION;
1394 ipb->pb0_hdr.len = IPL_BP0_CCW_LEN;
1395 ipb->pb0_hdr.pbt = IPL_PBT_CCW;
1396}
1397
1398static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)
1399{
1400 /* LOADPARM */
1401 /* check if read scp info worked and set loadparm */
1402 if (sclp_ipl_info.is_valid)
1403 memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
1404 else
1405 /* read scp info failed: set empty loadparm (EBCDIC blanks) */
1406 memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN);
1407 ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM;
1408
1409 /* VM PARM */
1410 if (MACHINE_IS_VM && ipl_block_valid &&
1411 (ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) {
1412
1413 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
1414 ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len;
1415 memcpy(ipb->ccw.vm_parm,
1416 ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE);
1417 }
1418}
1419
1420static int __init reipl_nss_init(void)
1421{
1422 int rc;
1423
1424 if (!MACHINE_IS_VM)
1425 return 0;
1426
1427 reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL);
1428 if (!reipl_block_nss)
1429 return -ENOMEM;
1430
1431 rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group);
1432 if (rc)
1433 return rc;
1434
1435 reipl_block_ccw_init(reipl_block_nss);
1436 reipl_capabilities |= IPL_TYPE_NSS;
1437 return 0;
1438}
1439
1440static int __init reipl_ccw_init(void)
1441{
1442 int rc;
1443
1444 reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
1445 if (!reipl_block_ccw)
1446 return -ENOMEM;
1447
1448 rc = sysfs_create_group(&reipl_kset->kobj,
1449 MACHINE_IS_VM ? &reipl_ccw_attr_group_vm
1450 : &reipl_ccw_attr_group_lpar);
1451 if (rc)
1452 return rc;
1453
1454 reipl_block_ccw_init(reipl_block_ccw);
1455 if (ipl_info.type == IPL_TYPE_CCW) {
1456 reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid;
1457 reipl_block_ccw->ccw.devno = ipl_block.ccw.devno;
1458 reipl_block_ccw_fill_parms(reipl_block_ccw);
1459 }
1460
1461 reipl_capabilities |= IPL_TYPE_CCW;
1462 return 0;
1463}
1464
1465static int __init reipl_fcp_init(void)
1466{
1467 int rc;
1468
1469 reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
1470 if (!reipl_block_fcp)
1471 return -ENOMEM;
1472
1473 /* sysfs: create fcp kset for mixing attr group and bin attrs */
1474 reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL,
1475 &reipl_kset->kobj);
1476 if (!reipl_fcp_kset) {
1477 free_page((unsigned long) reipl_block_fcp);
1478 return -ENOMEM;
1479 }
1480
1481 rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
1482 if (rc)
1483 goto out1;
1484
1485 if (test_facility(141)) {
1486 rc = sysfs_create_file(&reipl_fcp_kset->kobj,
1487 &sys_reipl_fcp_clear_attr.attr);
1488 if (rc)
1489 goto out2;
1490 } else {
1491 reipl_fcp_clear = true;
1492 }
1493
1494 if (ipl_info.type == IPL_TYPE_FCP) {
1495 memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block));
1496 /*
1497 * Fix loadparm: There are systems where the (SCSI) LOADPARM
1498 * is invalid in the SCSI IPL parameter block, so take it
1499 * always from sclp_ipl_info.
1500 */
1501 memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm,
1502 LOADPARM_LEN);
1503 } else {
1504 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN;
1505 reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
1506 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
1507 reipl_block_fcp->fcp.pbt = IPL_PBT_FCP;
1508 reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL;
1509 }
1510 reipl_capabilities |= IPL_TYPE_FCP;
1511 return 0;
1512
1513out2:
1514 sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
1515out1:
1516 kset_unregister(reipl_fcp_kset);
1517 free_page((unsigned long) reipl_block_fcp);
1518 return rc;
1519}
1520
1521static int __init reipl_nvme_init(void)
1522{
1523 int rc;
1524
1525 reipl_block_nvme = (void *) get_zeroed_page(GFP_KERNEL);
1526 if (!reipl_block_nvme)
1527 return -ENOMEM;
1528
1529 /* sysfs: create kset for mixing attr group and bin attrs */
1530 reipl_nvme_kset = kset_create_and_add(IPL_NVME_STR, NULL,
1531 &reipl_kset->kobj);
1532 if (!reipl_nvme_kset) {
1533 free_page((unsigned long) reipl_block_nvme);
1534 return -ENOMEM;
1535 }
1536
1537 rc = sysfs_create_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group);
1538 if (rc)
1539 goto out1;
1540
1541 if (test_facility(141)) {
1542 rc = sysfs_create_file(&reipl_nvme_kset->kobj,
1543 &sys_reipl_nvme_clear_attr.attr);
1544 if (rc)
1545 goto out2;
1546 } else {
1547 reipl_nvme_clear = true;
1548 }
1549
1550 if (ipl_info.type == IPL_TYPE_NVME) {
1551 memcpy(reipl_block_nvme, &ipl_block, sizeof(ipl_block));
1552 /*
1553 * Fix loadparm: There are systems where the (SCSI) LOADPARM
1554 * is invalid in the IPL parameter block, so take it
1555 * always from sclp_ipl_info.
1556 */
1557 memcpy(reipl_block_nvme->nvme.loadparm, sclp_ipl_info.loadparm,
1558 LOADPARM_LEN);
1559 } else {
1560 reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN;
1561 reipl_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
1562 reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN;
1563 reipl_block_nvme->nvme.pbt = IPL_PBT_NVME;
1564 reipl_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_IPL;
1565 }
1566 reipl_capabilities |= IPL_TYPE_NVME;
1567 return 0;
1568
1569out2:
1570 sysfs_remove_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group);
1571out1:
1572 kset_unregister(reipl_nvme_kset);
1573 free_page((unsigned long) reipl_block_nvme);
1574 return rc;
1575}
1576
1577static int __init reipl_eckd_init(void)
1578{
1579 int rc;
1580
1581 if (!sclp.has_sipl_eckd)
1582 return 0;
1583
1584 reipl_block_eckd = (void *)get_zeroed_page(GFP_KERNEL);
1585 if (!reipl_block_eckd)
1586 return -ENOMEM;
1587
1588 /* sysfs: create kset for mixing attr group and bin attrs */
1589 reipl_eckd_kset = kset_create_and_add(IPL_ECKD_STR, NULL,
1590 &reipl_kset->kobj);
1591 if (!reipl_eckd_kset) {
1592 free_page((unsigned long)reipl_block_eckd);
1593 return -ENOMEM;
1594 }
1595
1596 rc = sysfs_create_group(&reipl_eckd_kset->kobj, &reipl_eckd_attr_group);
1597 if (rc)
1598 goto out1;
1599
1600 if (test_facility(141)) {
1601 rc = sysfs_create_file(&reipl_eckd_kset->kobj,
1602 &sys_reipl_eckd_clear_attr.attr);
1603 if (rc)
1604 goto out2;
1605 } else {
1606 reipl_eckd_clear = true;
1607 }
1608
1609 if (ipl_info.type == IPL_TYPE_ECKD) {
1610 memcpy(reipl_block_eckd, &ipl_block, sizeof(ipl_block));
1611 } else {
1612 reipl_block_eckd->hdr.len = IPL_BP_ECKD_LEN;
1613 reipl_block_eckd->hdr.version = IPL_PARM_BLOCK_VERSION;
1614 reipl_block_eckd->eckd.len = IPL_BP0_ECKD_LEN;
1615 reipl_block_eckd->eckd.pbt = IPL_PBT_ECKD;
1616 reipl_block_eckd->eckd.opt = IPL_PB0_ECKD_OPT_IPL;
1617 }
1618 reipl_capabilities |= IPL_TYPE_ECKD;
1619 return 0;
1620
1621out2:
1622 sysfs_remove_group(&reipl_eckd_kset->kobj, &reipl_eckd_attr_group);
1623out1:
1624 kset_unregister(reipl_eckd_kset);
1625 free_page((unsigned long)reipl_block_eckd);
1626 return rc;
1627}
1628
1629static int __init reipl_type_init(void)
1630{
1631 enum ipl_type reipl_type = ipl_info.type;
1632 struct ipl_parameter_block *reipl_block;
1633 unsigned long size;
1634
1635 reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size);
1636 if (!reipl_block)
1637 goto out;
1638 /*
1639 * If we have an OS info reipl block, this will be used
1640 */
1641 if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) {
1642 memcpy(reipl_block_fcp, reipl_block, size);
1643 reipl_type = IPL_TYPE_FCP;
1644 } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_NVME) {
1645 memcpy(reipl_block_nvme, reipl_block, size);
1646 reipl_type = IPL_TYPE_NVME;
1647 } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) {
1648 memcpy(reipl_block_ccw, reipl_block, size);
1649 reipl_type = IPL_TYPE_CCW;
1650 } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_ECKD) {
1651 memcpy(reipl_block_eckd, reipl_block, size);
1652 reipl_type = IPL_TYPE_ECKD;
1653 }
1654out:
1655 return reipl_set_type(reipl_type);
1656}
1657
1658static int __init reipl_init(void)
1659{
1660 int rc;
1661
1662 reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj);
1663 if (!reipl_kset)
1664 return -ENOMEM;
1665 rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr);
1666 if (rc) {
1667 kset_unregister(reipl_kset);
1668 return rc;
1669 }
1670 rc = reipl_ccw_init();
1671 if (rc)
1672 return rc;
1673 rc = reipl_eckd_init();
1674 if (rc)
1675 return rc;
1676 rc = reipl_fcp_init();
1677 if (rc)
1678 return rc;
1679 rc = reipl_nvme_init();
1680 if (rc)
1681 return rc;
1682 rc = reipl_nss_init();
1683 if (rc)
1684 return rc;
1685 return reipl_type_init();
1686}
1687
1688static struct shutdown_action __refdata reipl_action = {
1689 .name = SHUTDOWN_ACTION_REIPL_STR,
1690 .fn = reipl_run,
1691 .init = reipl_init,
1692};
1693
1694/*
1695 * dump shutdown action: Dump Linux on shutdown.
1696 */
1697
1698/* FCP dump device attributes */
1699
1700DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n",
1701 dump_block_fcp->fcp.wwpn);
1702DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n",
1703 dump_block_fcp->fcp.lun);
1704DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
1705 dump_block_fcp->fcp.bootprog);
1706DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
1707 dump_block_fcp->fcp.br_lba);
1708DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
1709 dump_block_fcp->fcp.devno);
1710
1711static struct attribute *dump_fcp_attrs[] = {
1712 &sys_dump_fcp_device_attr.attr,
1713 &sys_dump_fcp_wwpn_attr.attr,
1714 &sys_dump_fcp_lun_attr.attr,
1715 &sys_dump_fcp_bootprog_attr.attr,
1716 &sys_dump_fcp_br_lba_attr.attr,
1717 NULL,
1718};
1719
1720static struct attribute_group dump_fcp_attr_group = {
1721 .name = IPL_FCP_STR,
1722 .attrs = dump_fcp_attrs,
1723};
1724
1725/* NVME dump device attributes */
1726DEFINE_IPL_ATTR_RW(dump_nvme, fid, "0x%08llx\n", "%llx\n",
1727 dump_block_nvme->nvme.fid);
1728DEFINE_IPL_ATTR_RW(dump_nvme, nsid, "0x%08llx\n", "%llx\n",
1729 dump_block_nvme->nvme.nsid);
1730DEFINE_IPL_ATTR_RW(dump_nvme, bootprog, "%lld\n", "%llx\n",
1731 dump_block_nvme->nvme.bootprog);
1732DEFINE_IPL_ATTR_RW(dump_nvme, br_lba, "%lld\n", "%llx\n",
1733 dump_block_nvme->nvme.br_lba);
1734
1735static struct attribute *dump_nvme_attrs[] = {
1736 &sys_dump_nvme_fid_attr.attr,
1737 &sys_dump_nvme_nsid_attr.attr,
1738 &sys_dump_nvme_bootprog_attr.attr,
1739 &sys_dump_nvme_br_lba_attr.attr,
1740 NULL,
1741};
1742
1743static struct attribute_group dump_nvme_attr_group = {
1744 .name = IPL_NVME_STR,
1745 .attrs = dump_nvme_attrs,
1746};
1747
1748/* ECKD dump device attributes */
1749DEFINE_IPL_CCW_ATTR_RW(dump_eckd, device, dump_block_eckd->eckd);
1750DEFINE_IPL_ATTR_RW(dump_eckd, bootprog, "%lld\n", "%llx\n",
1751 dump_block_eckd->eckd.bootprog);
1752
1753IPL_ATTR_BR_CHR_SHOW_FN(dump, dump_block_eckd->eckd);
1754IPL_ATTR_BR_CHR_STORE_FN(dump, dump_block_eckd->eckd);
1755
1756static struct kobj_attribute sys_dump_eckd_br_chr_attr =
1757 __ATTR(br_chr, 0644, eckd_dump_br_chr_show, eckd_dump_br_chr_store);
1758
1759static struct attribute *dump_eckd_attrs[] = {
1760 &sys_dump_eckd_device_attr.attr,
1761 &sys_dump_eckd_bootprog_attr.attr,
1762 &sys_dump_eckd_br_chr_attr.attr,
1763 NULL,
1764};
1765
1766static struct attribute_group dump_eckd_attr_group = {
1767 .name = IPL_ECKD_STR,
1768 .attrs = dump_eckd_attrs,
1769};
1770
1771/* CCW dump device attributes */
1772DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw);
1773
1774static struct attribute *dump_ccw_attrs[] = {
1775 &sys_dump_ccw_device_attr.attr,
1776 NULL,
1777};
1778
1779static struct attribute_group dump_ccw_attr_group = {
1780 .name = IPL_CCW_STR,
1781 .attrs = dump_ccw_attrs,
1782};
1783
1784/* dump type */
1785
1786static int dump_set_type(enum dump_type type)
1787{
1788 if (!(dump_capabilities & type))
1789 return -EINVAL;
1790 dump_type = type;
1791 return 0;
1792}
1793
1794static ssize_t dump_type_show(struct kobject *kobj,
1795 struct kobj_attribute *attr, char *page)
1796{
1797 return sprintf(page, "%s\n", dump_type_str(dump_type));
1798}
1799
1800static ssize_t dump_type_store(struct kobject *kobj,
1801 struct kobj_attribute *attr,
1802 const char *buf, size_t len)
1803{
1804 int rc = -EINVAL;
1805
1806 if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0)
1807 rc = dump_set_type(DUMP_TYPE_NONE);
1808 else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0)
1809 rc = dump_set_type(DUMP_TYPE_CCW);
1810 else if (strncmp(buf, DUMP_ECKD_STR, strlen(DUMP_ECKD_STR)) == 0)
1811 rc = dump_set_type(DUMP_TYPE_ECKD);
1812 else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0)
1813 rc = dump_set_type(DUMP_TYPE_FCP);
1814 else if (strncmp(buf, DUMP_NVME_STR, strlen(DUMP_NVME_STR)) == 0)
1815 rc = dump_set_type(DUMP_TYPE_NVME);
1816 return (rc != 0) ? rc : len;
1817}
1818
1819static struct kobj_attribute dump_type_attr =
1820 __ATTR(dump_type, 0644, dump_type_show, dump_type_store);
1821
1822static struct kset *dump_kset;
1823
1824static void diag308_dump(void *dump_block)
1825{
1826 diag308(DIAG308_SET, dump_block);
1827 while (1) {
1828 if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302)
1829 break;
1830 udelay(USEC_PER_SEC);
1831 }
1832}
1833
1834static void __dump_run(void *unused)
1835{
1836 switch (dump_type) {
1837 case DUMP_TYPE_CCW:
1838 diag308_dump(dump_block_ccw);
1839 break;
1840 case DUMP_TYPE_ECKD:
1841 diag308_dump(dump_block_eckd);
1842 break;
1843 case DUMP_TYPE_FCP:
1844 diag308_dump(dump_block_fcp);
1845 break;
1846 case DUMP_TYPE_NVME:
1847 diag308_dump(dump_block_nvme);
1848 break;
1849 default:
1850 break;
1851 }
1852}
1853
1854static void dump_run(struct shutdown_trigger *trigger)
1855{
1856 if (dump_type == DUMP_TYPE_NONE)
1857 return;
1858 smp_send_stop();
1859 smp_call_ipl_cpu(__dump_run, NULL);
1860}
1861
1862static int __init dump_ccw_init(void)
1863{
1864 int rc;
1865
1866 dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
1867 if (!dump_block_ccw)
1868 return -ENOMEM;
1869 rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group);
1870 if (rc) {
1871 free_page((unsigned long)dump_block_ccw);
1872 return rc;
1873 }
1874 dump_block_ccw->hdr.len = IPL_BP_CCW_LEN;
1875 dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
1876 dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN;
1877 dump_block_ccw->ccw.pbt = IPL_PBT_CCW;
1878 dump_capabilities |= DUMP_TYPE_CCW;
1879 return 0;
1880}
1881
1882static int __init dump_fcp_init(void)
1883{
1884 int rc;
1885
1886 if (!sclp_ipl_info.has_dump)
1887 return 0; /* LDIPL DUMP is not installed */
1888 dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
1889 if (!dump_block_fcp)
1890 return -ENOMEM;
1891 rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group);
1892 if (rc) {
1893 free_page((unsigned long)dump_block_fcp);
1894 return rc;
1895 }
1896 dump_block_fcp->hdr.len = IPL_BP_FCP_LEN;
1897 dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
1898 dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
1899 dump_block_fcp->fcp.pbt = IPL_PBT_FCP;
1900 dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP;
1901 dump_capabilities |= DUMP_TYPE_FCP;
1902 return 0;
1903}
1904
1905static int __init dump_nvme_init(void)
1906{
1907 int rc;
1908
1909 if (!sclp_ipl_info.has_dump)
1910 return 0; /* LDIPL DUMP is not installed */
1911 dump_block_nvme = (void *) get_zeroed_page(GFP_KERNEL);
1912 if (!dump_block_nvme)
1913 return -ENOMEM;
1914 rc = sysfs_create_group(&dump_kset->kobj, &dump_nvme_attr_group);
1915 if (rc) {
1916 free_page((unsigned long)dump_block_nvme);
1917 return rc;
1918 }
1919 dump_block_nvme->hdr.len = IPL_BP_NVME_LEN;
1920 dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
1921 dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN;
1922 dump_block_nvme->fcp.pbt = IPL_PBT_NVME;
1923 dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP;
1924 dump_capabilities |= DUMP_TYPE_NVME;
1925 return 0;
1926}
1927
1928static int __init dump_eckd_init(void)
1929{
1930 int rc;
1931
1932 if (!sclp_ipl_info.has_dump || !sclp.has_sipl_eckd)
1933 return 0; /* LDIPL DUMP is not installed */
1934 dump_block_eckd = (void *)get_zeroed_page(GFP_KERNEL);
1935 if (!dump_block_eckd)
1936 return -ENOMEM;
1937 rc = sysfs_create_group(&dump_kset->kobj, &dump_eckd_attr_group);
1938 if (rc) {
1939 free_page((unsigned long)dump_block_eckd);
1940 return rc;
1941 }
1942 dump_block_eckd->hdr.len = IPL_BP_ECKD_LEN;
1943 dump_block_eckd->hdr.version = IPL_PARM_BLOCK_VERSION;
1944 dump_block_eckd->eckd.len = IPL_BP0_ECKD_LEN;
1945 dump_block_eckd->eckd.pbt = IPL_PBT_ECKD;
1946 dump_block_eckd->eckd.opt = IPL_PB0_ECKD_OPT_DUMP;
1947 dump_capabilities |= DUMP_TYPE_ECKD;
1948 return 0;
1949}
1950
1951static int __init dump_init(void)
1952{
1953 int rc;
1954
1955 dump_kset = kset_create_and_add("dump", NULL, firmware_kobj);
1956 if (!dump_kset)
1957 return -ENOMEM;
1958 rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr);
1959 if (rc) {
1960 kset_unregister(dump_kset);
1961 return rc;
1962 }
1963 rc = dump_ccw_init();
1964 if (rc)
1965 return rc;
1966 rc = dump_eckd_init();
1967 if (rc)
1968 return rc;
1969 rc = dump_fcp_init();
1970 if (rc)
1971 return rc;
1972 rc = dump_nvme_init();
1973 if (rc)
1974 return rc;
1975 dump_set_type(DUMP_TYPE_NONE);
1976 return 0;
1977}
1978
1979static struct shutdown_action __refdata dump_action = {
1980 .name = SHUTDOWN_ACTION_DUMP_STR,
1981 .fn = dump_run,
1982 .init = dump_init,
1983};
1984
1985static void dump_reipl_run(struct shutdown_trigger *trigger)
1986{
1987 unsigned long ipib = (unsigned long) reipl_block_actual;
1988 struct lowcore *abs_lc;
1989 unsigned long flags;
1990 unsigned int csum;
1991
1992 csum = (__force unsigned int)
1993 csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
1994 abs_lc = get_abs_lowcore(&flags);
1995 abs_lc->ipib = ipib;
1996 abs_lc->ipib_checksum = csum;
1997 put_abs_lowcore(abs_lc, flags);
1998 dump_run(trigger);
1999}
2000
2001static struct shutdown_action __refdata dump_reipl_action = {
2002 .name = SHUTDOWN_ACTION_DUMP_REIPL_STR,
2003 .fn = dump_reipl_run,
2004};
2005
2006/*
2007 * vmcmd shutdown action: Trigger vm command on shutdown.
2008 */
2009
2010static char vmcmd_on_reboot[128];
2011static char vmcmd_on_panic[128];
2012static char vmcmd_on_halt[128];
2013static char vmcmd_on_poff[128];
2014static char vmcmd_on_restart[128];
2015
2016DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot);
2017DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic);
2018DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt);
2019DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff);
2020DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart);
2021
2022static struct attribute *vmcmd_attrs[] = {
2023 &sys_vmcmd_on_reboot_attr.attr,
2024 &sys_vmcmd_on_panic_attr.attr,
2025 &sys_vmcmd_on_halt_attr.attr,
2026 &sys_vmcmd_on_poff_attr.attr,
2027 &sys_vmcmd_on_restart_attr.attr,
2028 NULL,
2029};
2030
2031static struct attribute_group vmcmd_attr_group = {
2032 .attrs = vmcmd_attrs,
2033};
2034
2035static struct kset *vmcmd_kset;
2036
2037static void vmcmd_run(struct shutdown_trigger *trigger)
2038{
2039 char *cmd;
2040
2041 if (strcmp(trigger->name, ON_REIPL_STR) == 0)
2042 cmd = vmcmd_on_reboot;
2043 else if (strcmp(trigger->name, ON_PANIC_STR) == 0)
2044 cmd = vmcmd_on_panic;
2045 else if (strcmp(trigger->name, ON_HALT_STR) == 0)
2046 cmd = vmcmd_on_halt;
2047 else if (strcmp(trigger->name, ON_POFF_STR) == 0)
2048 cmd = vmcmd_on_poff;
2049 else if (strcmp(trigger->name, ON_RESTART_STR) == 0)
2050 cmd = vmcmd_on_restart;
2051 else
2052 return;
2053
2054 if (strlen(cmd) == 0)
2055 return;
2056 __cpcmd(cmd, NULL, 0, NULL);
2057}
2058
2059static int vmcmd_init(void)
2060{
2061 if (!MACHINE_IS_VM)
2062 return -EOPNOTSUPP;
2063 vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj);
2064 if (!vmcmd_kset)
2065 return -ENOMEM;
2066 return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group);
2067}
2068
2069static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR,
2070 vmcmd_run, vmcmd_init};
2071
2072/*
2073 * stop shutdown action: Stop Linux on shutdown.
2074 */
2075
2076static void stop_run(struct shutdown_trigger *trigger)
2077{
2078 if (strcmp(trigger->name, ON_PANIC_STR) == 0 ||
2079 strcmp(trigger->name, ON_RESTART_STR) == 0)
2080 disabled_wait();
2081 smp_stop_cpu();
2082}
2083
2084static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR,
2085 stop_run, NULL};
2086
2087/* action list */
2088
2089static struct shutdown_action *shutdown_actions_list[] = {
2090 &ipl_action, &reipl_action, &dump_reipl_action, &dump_action,
2091 &vmcmd_action, &stop_action};
2092#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *))
2093
2094/*
2095 * Trigger section
2096 */
2097
2098static struct kset *shutdown_actions_kset;
2099
2100static int set_trigger(const char *buf, struct shutdown_trigger *trigger,
2101 size_t len)
2102{
2103 int i;
2104
2105 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
2106 if (sysfs_streq(buf, shutdown_actions_list[i]->name)) {
2107 if (shutdown_actions_list[i]->init_rc) {
2108 return shutdown_actions_list[i]->init_rc;
2109 } else {
2110 trigger->action = shutdown_actions_list[i];
2111 return len;
2112 }
2113 }
2114 }
2115 return -EINVAL;
2116}
2117
2118/* on reipl */
2119
2120static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR,
2121 &reipl_action};
2122
2123static ssize_t on_reboot_show(struct kobject *kobj,
2124 struct kobj_attribute *attr, char *page)
2125{
2126 return sprintf(page, "%s\n", on_reboot_trigger.action->name);
2127}
2128
2129static ssize_t on_reboot_store(struct kobject *kobj,
2130 struct kobj_attribute *attr,
2131 const char *buf, size_t len)
2132{
2133 return set_trigger(buf, &on_reboot_trigger, len);
2134}
2135static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot);
2136
2137static void do_machine_restart(char *__unused)
2138{
2139 smp_send_stop();
2140 on_reboot_trigger.action->fn(&on_reboot_trigger);
2141 reipl_run(NULL);
2142}
2143void (*_machine_restart)(char *command) = do_machine_restart;
2144
2145/* on panic */
2146
2147static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action};
2148
2149static ssize_t on_panic_show(struct kobject *kobj,
2150 struct kobj_attribute *attr, char *page)
2151{
2152 return sprintf(page, "%s\n", on_panic_trigger.action->name);
2153}
2154
2155static ssize_t on_panic_store(struct kobject *kobj,
2156 struct kobj_attribute *attr,
2157 const char *buf, size_t len)
2158{
2159 return set_trigger(buf, &on_panic_trigger, len);
2160}
2161static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic);
2162
2163static void do_panic(void)
2164{
2165 lgr_info_log();
2166 on_panic_trigger.action->fn(&on_panic_trigger);
2167 stop_run(&on_panic_trigger);
2168}
2169
2170/* on restart */
2171
2172static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR,
2173 &stop_action};
2174
2175static ssize_t on_restart_show(struct kobject *kobj,
2176 struct kobj_attribute *attr, char *page)
2177{
2178 return sprintf(page, "%s\n", on_restart_trigger.action->name);
2179}
2180
2181static ssize_t on_restart_store(struct kobject *kobj,
2182 struct kobj_attribute *attr,
2183 const char *buf, size_t len)
2184{
2185 return set_trigger(buf, &on_restart_trigger, len);
2186}
2187static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart);
2188
2189static void __do_restart(void *ignore)
2190{
2191 smp_send_stop();
2192#ifdef CONFIG_CRASH_DUMP
2193 crash_kexec(NULL);
2194#endif
2195 on_restart_trigger.action->fn(&on_restart_trigger);
2196 stop_run(&on_restart_trigger);
2197}
2198
2199void do_restart(void *arg)
2200{
2201 tracing_off();
2202 debug_locks_off();
2203 lgr_info_log();
2204 smp_call_online_cpu(__do_restart, arg);
2205}
2206
2207/* on halt */
2208
2209static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action};
2210
2211static ssize_t on_halt_show(struct kobject *kobj,
2212 struct kobj_attribute *attr, char *page)
2213{
2214 return sprintf(page, "%s\n", on_halt_trigger.action->name);
2215}
2216
2217static ssize_t on_halt_store(struct kobject *kobj,
2218 struct kobj_attribute *attr,
2219 const char *buf, size_t len)
2220{
2221 return set_trigger(buf, &on_halt_trigger, len);
2222}
2223static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt);
2224
2225static void do_machine_halt(void)
2226{
2227 smp_send_stop();
2228 on_halt_trigger.action->fn(&on_halt_trigger);
2229 stop_run(&on_halt_trigger);
2230}
2231void (*_machine_halt)(void) = do_machine_halt;
2232
2233/* on power off */
2234
2235static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action};
2236
2237static ssize_t on_poff_show(struct kobject *kobj,
2238 struct kobj_attribute *attr, char *page)
2239{
2240 return sprintf(page, "%s\n", on_poff_trigger.action->name);
2241}
2242
2243static ssize_t on_poff_store(struct kobject *kobj,
2244 struct kobj_attribute *attr,
2245 const char *buf, size_t len)
2246{
2247 return set_trigger(buf, &on_poff_trigger, len);
2248}
2249static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff);
2250
2251static void do_machine_power_off(void)
2252{
2253 smp_send_stop();
2254 on_poff_trigger.action->fn(&on_poff_trigger);
2255 stop_run(&on_poff_trigger);
2256}
2257void (*_machine_power_off)(void) = do_machine_power_off;
2258
2259static struct attribute *shutdown_action_attrs[] = {
2260 &on_restart_attr.attr,
2261 &on_reboot_attr.attr,
2262 &on_panic_attr.attr,
2263 &on_halt_attr.attr,
2264 &on_poff_attr.attr,
2265 NULL,
2266};
2267
2268static struct attribute_group shutdown_action_attr_group = {
2269 .attrs = shutdown_action_attrs,
2270};
2271
2272static void __init shutdown_triggers_init(void)
2273{
2274 shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL,
2275 firmware_kobj);
2276 if (!shutdown_actions_kset)
2277 goto fail;
2278 if (sysfs_create_group(&shutdown_actions_kset->kobj,
2279 &shutdown_action_attr_group))
2280 goto fail;
2281 return;
2282fail:
2283 panic("shutdown_triggers_init failed\n");
2284}
2285
2286static void __init shutdown_actions_init(void)
2287{
2288 int i;
2289
2290 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
2291 if (!shutdown_actions_list[i]->init)
2292 continue;
2293 shutdown_actions_list[i]->init_rc =
2294 shutdown_actions_list[i]->init();
2295 }
2296}
2297
2298static int __init s390_ipl_init(void)
2299{
2300 char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40};
2301
2302 sclp_early_get_ipl_info(&sclp_ipl_info);
2303 /*
2304 * Fix loadparm: There are systems where the (SCSI) LOADPARM
2305 * returned by read SCP info is invalid (contains EBCDIC blanks)
2306 * when the system has been booted via diag308. In that case we use
2307 * the value from diag308, if available.
2308 *
2309 * There are also systems where diag308 store does not work in
2310 * case the system is booted from HMC. Fortunately in this case
2311 * READ SCP info provides the correct value.
2312 */
2313 if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid)
2314 memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN);
2315 shutdown_actions_init();
2316 shutdown_triggers_init();
2317 return 0;
2318}
2319
2320__initcall(s390_ipl_init);
2321
2322static void __init strncpy_skip_quote(char *dst, char *src, int n)
2323{
2324 int sx, dx;
2325
2326 dx = 0;
2327 for (sx = 0; src[sx] != 0; sx++) {
2328 if (src[sx] == '"')
2329 continue;
2330 dst[dx++] = src[sx];
2331 if (dx >= n)
2332 break;
2333 }
2334}
2335
2336static int __init vmcmd_on_reboot_setup(char *str)
2337{
2338 if (!MACHINE_IS_VM)
2339 return 1;
2340 strncpy_skip_quote(vmcmd_on_reboot, str, 127);
2341 vmcmd_on_reboot[127] = 0;
2342 on_reboot_trigger.action = &vmcmd_action;
2343 return 1;
2344}
2345__setup("vmreboot=", vmcmd_on_reboot_setup);
2346
2347static int __init vmcmd_on_panic_setup(char *str)
2348{
2349 if (!MACHINE_IS_VM)
2350 return 1;
2351 strncpy_skip_quote(vmcmd_on_panic, str, 127);
2352 vmcmd_on_panic[127] = 0;
2353 on_panic_trigger.action = &vmcmd_action;
2354 return 1;
2355}
2356__setup("vmpanic=", vmcmd_on_panic_setup);
2357
2358static int __init vmcmd_on_halt_setup(char *str)
2359{
2360 if (!MACHINE_IS_VM)
2361 return 1;
2362 strncpy_skip_quote(vmcmd_on_halt, str, 127);
2363 vmcmd_on_halt[127] = 0;
2364 on_halt_trigger.action = &vmcmd_action;
2365 return 1;
2366}
2367__setup("vmhalt=", vmcmd_on_halt_setup);
2368
2369static int __init vmcmd_on_poff_setup(char *str)
2370{
2371 if (!MACHINE_IS_VM)
2372 return 1;
2373 strncpy_skip_quote(vmcmd_on_poff, str, 127);
2374 vmcmd_on_poff[127] = 0;
2375 on_poff_trigger.action = &vmcmd_action;
2376 return 1;
2377}
2378__setup("vmpoff=", vmcmd_on_poff_setup);
2379
2380static int on_panic_notify(struct notifier_block *self,
2381 unsigned long event, void *data)
2382{
2383 do_panic();
2384 return NOTIFY_OK;
2385}
2386
2387static struct notifier_block on_panic_nb = {
2388 .notifier_call = on_panic_notify,
2389 .priority = INT_MIN,
2390};
2391
2392void __init setup_ipl(void)
2393{
2394 BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE);
2395
2396 ipl_info.type = get_ipl_type();
2397 switch (ipl_info.type) {
2398 case IPL_TYPE_CCW:
2399 ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid;
2400 ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno;
2401 break;
2402 case IPL_TYPE_ECKD:
2403 case IPL_TYPE_ECKD_DUMP:
2404 ipl_info.data.eckd.dev_id.ssid = ipl_block.eckd.ssid;
2405 ipl_info.data.eckd.dev_id.devno = ipl_block.eckd.devno;
2406 break;
2407 case IPL_TYPE_FCP:
2408 case IPL_TYPE_FCP_DUMP:
2409 ipl_info.data.fcp.dev_id.ssid = 0;
2410 ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno;
2411 ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn;
2412 ipl_info.data.fcp.lun = ipl_block.fcp.lun;
2413 break;
2414 case IPL_TYPE_NVME:
2415 case IPL_TYPE_NVME_DUMP:
2416 ipl_info.data.nvme.fid = ipl_block.nvme.fid;
2417 ipl_info.data.nvme.nsid = ipl_block.nvme.nsid;
2418 break;
2419 case IPL_TYPE_NSS:
2420 case IPL_TYPE_UNKNOWN:
2421 /* We have no info to copy */
2422 break;
2423 }
2424 atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
2425}
2426
2427void s390_reset_system(void)
2428{
2429 /* Disable prefixing */
2430 set_prefix(0);
2431
2432 /* Disable lowcore protection */
2433 __ctl_clear_bit(0, 28);
2434 diag_amode31_ops.diag308_reset();
2435}
2436
2437#ifdef CONFIG_KEXEC_FILE
2438
2439int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
2440 unsigned char flags, unsigned short cert)
2441{
2442 struct ipl_report_component *comp;
2443
2444 comp = vzalloc(sizeof(*comp));
2445 if (!comp)
2446 return -ENOMEM;
2447 list_add_tail(&comp->list, &report->components);
2448
2449 comp->entry.addr = kbuf->mem;
2450 comp->entry.len = kbuf->memsz;
2451 comp->entry.flags = flags;
2452 comp->entry.certificate_index = cert;
2453
2454 report->size += sizeof(comp->entry);
2455
2456 return 0;
2457}
2458
2459int ipl_report_add_certificate(struct ipl_report *report, void *key,
2460 unsigned long addr, unsigned long len)
2461{
2462 struct ipl_report_certificate *cert;
2463
2464 cert = vzalloc(sizeof(*cert));
2465 if (!cert)
2466 return -ENOMEM;
2467 list_add_tail(&cert->list, &report->certificates);
2468
2469 cert->entry.addr = addr;
2470 cert->entry.len = len;
2471 cert->key = key;
2472
2473 report->size += sizeof(cert->entry);
2474 report->size += cert->entry.len;
2475
2476 return 0;
2477}
2478
2479struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib)
2480{
2481 struct ipl_report *report;
2482
2483 report = vzalloc(sizeof(*report));
2484 if (!report)
2485 return ERR_PTR(-ENOMEM);
2486
2487 report->ipib = ipib;
2488 INIT_LIST_HEAD(&report->components);
2489 INIT_LIST_HEAD(&report->certificates);
2490
2491 report->size = ALIGN(ipib->hdr.len, 8);
2492 report->size += sizeof(struct ipl_rl_hdr);
2493 report->size += sizeof(struct ipl_rb_components);
2494 report->size += sizeof(struct ipl_rb_certificates);
2495
2496 return report;
2497}
2498
2499void *ipl_report_finish(struct ipl_report *report)
2500{
2501 struct ipl_report_certificate *cert;
2502 struct ipl_report_component *comp;
2503 struct ipl_rb_certificates *certs;
2504 struct ipl_parameter_block *ipib;
2505 struct ipl_rb_components *comps;
2506 struct ipl_rl_hdr *rl_hdr;
2507 void *buf, *ptr;
2508
2509 buf = vzalloc(report->size);
2510 if (!buf)
2511 goto out;
2512 ptr = buf;
2513
2514 memcpy(ptr, report->ipib, report->ipib->hdr.len);
2515 ipib = ptr;
2516 if (ipl_secure_flag)
2517 ipib->hdr.flags |= IPL_PL_FLAG_SIPL;
2518 ipib->hdr.flags |= IPL_PL_FLAG_IPLSR;
2519 ptr += report->ipib->hdr.len;
2520 ptr = PTR_ALIGN(ptr, 8);
2521
2522 rl_hdr = ptr;
2523 ptr += sizeof(*rl_hdr);
2524
2525 comps = ptr;
2526 comps->rbt = IPL_RBT_COMPONENTS;
2527 ptr += sizeof(*comps);
2528 list_for_each_entry(comp, &report->components, list) {
2529 memcpy(ptr, &comp->entry, sizeof(comp->entry));
2530 ptr += sizeof(comp->entry);
2531 }
2532 comps->len = ptr - (void *)comps;
2533
2534 certs = ptr;
2535 certs->rbt = IPL_RBT_CERTIFICATES;
2536 ptr += sizeof(*certs);
2537 list_for_each_entry(cert, &report->certificates, list) {
2538 memcpy(ptr, &cert->entry, sizeof(cert->entry));
2539 ptr += sizeof(cert->entry);
2540 }
2541 certs->len = ptr - (void *)certs;
2542 rl_hdr->len = ptr - (void *)rl_hdr;
2543
2544 list_for_each_entry(cert, &report->certificates, list) {
2545 memcpy(ptr, cert->key, cert->entry.len);
2546 ptr += cert->entry.len;
2547 }
2548
2549 BUG_ON(ptr > buf + report->size);
2550out:
2551 return buf;
2552}
2553
2554int ipl_report_free(struct ipl_report *report)
2555{
2556 struct ipl_report_component *comp, *ncomp;
2557 struct ipl_report_certificate *cert, *ncert;
2558
2559 list_for_each_entry_safe(comp, ncomp, &report->components, list)
2560 vfree(comp);
2561
2562 list_for_each_entry_safe(cert, ncert, &report->certificates, list)
2563 vfree(cert);
2564
2565 vfree(report);
2566
2567 return 0;
2568}
2569
2570#endif