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1/* SPDX-License-Identifier: GPL-2.0 */
2/* oplib.h: Describes the interface and available routines in the
3 * Linux Prom library.
4 *
5 * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
6 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
8
9#ifndef __SPARC64_OPLIB_H
10#define __SPARC64_OPLIB_H
11
12#include <asm/openprom.h>
13
14/* OBP version string. */
15extern char prom_version[];
16
17/* Root node of the prom device tree, this stays constant after
18 * initialization is complete.
19 */
20extern phandle prom_root_node;
21
22/* PROM stdout */
23extern int prom_stdout;
24
25/* /chosen node of the prom device tree, this stays constant after
26 * initialization is complete.
27 */
28extern phandle prom_chosen_node;
29
30/* Helper values and strings in arch/sparc64/kernel/head.S */
31extern const char prom_peer_name[];
32extern const char prom_compatible_name[];
33extern const char prom_root_compatible[];
34extern const char prom_cpu_compatible[];
35extern const char prom_finddev_name[];
36extern const char prom_chosen_path[];
37extern const char prom_cpu_path[];
38extern const char prom_getprop_name[];
39extern const char prom_mmu_name[];
40extern const char prom_callmethod_name[];
41extern const char prom_translate_name[];
42extern const char prom_map_name[];
43extern const char prom_unmap_name[];
44extern int prom_mmu_ihandle_cache;
45extern unsigned int prom_boot_mapped_pc;
46extern unsigned int prom_boot_mapping_mode;
47extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;
48
49struct linux_mlist_p1275 {
50 struct linux_mlist_p1275 *theres_more;
51 unsigned long start_adr;
52 unsigned long num_bytes;
53};
54
55struct linux_mem_p1275 {
56 struct linux_mlist_p1275 **p1275_totphys;
57 struct linux_mlist_p1275 **p1275_prommap;
58 struct linux_mlist_p1275 **p1275_available; /* What we can use */
59};
60
61/* The functions... */
62
63/* You must call prom_init() before using any of the library services,
64 * preferably as early as possible. Pass it the romvec pointer.
65 */
66void prom_init(void *cif_handler);
67void prom_init_report(void);
68
69/* Boot argument acquisition, returns the boot command line string. */
70char *prom_getbootargs(void);
71
72/* Miscellaneous routines, don't really fit in any category per se. */
73
74/* Reboot the machine with the command line passed. */
75void prom_reboot(const char *boot_command);
76
77/* Evaluate the forth string passed. */
78void prom_feval(const char *forth_string);
79
80/* Enter the prom, with possibility of continuation with the 'go'
81 * command in newer proms.
82 */
83void prom_cmdline(void);
84
85/* Enter the prom, with no chance of continuation for the stand-alone
86 * which calls this.
87 */
88void prom_halt(void) __attribute__ ((noreturn));
89
90/* Halt and power-off the machine. */
91void prom_halt_power_off(void) __attribute__ ((noreturn));
92
93/* Acquire the IDPROM of the root node in the prom device tree. This
94 * gets passed a buffer where you would like it stuffed. The return value
95 * is the format type of this idprom or 0xff on error.
96 */
97unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
98
99/* Write a buffer of characters to the console. */
100void prom_console_write_buf(const char *buf, int len);
101
102/* Prom's internal routines, don't use in kernel/boot code. */
103__printf(1, 2) void prom_printf(const char *fmt, ...);
104void prom_write(const char *buf, unsigned int len);
105
106/* Multiprocessor operations... */
107#ifdef CONFIG_SMP
108/* Start the CPU with the given device tree node at the passed program
109 * counter with the given arg passed in via register %o0.
110 */
111void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
112
113/* Start the CPU with the given cpu ID at the passed program
114 * counter with the given arg passed in via register %o0.
115 */
116void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
117
118/* Stop the CPU with the given cpu ID. */
119void prom_stopcpu_cpuid(int cpuid);
120
121/* Stop the current CPU. */
122void prom_stopself(void);
123
124/* Idle the current CPU. */
125void prom_idleself(void);
126
127/* Resume the CPU with the passed device tree node. */
128void prom_resumecpu(int cpunode);
129#endif
130
131/* Power management interfaces. */
132
133/* Put the current CPU to sleep. */
134void prom_sleepself(void);
135
136/* Put the entire system to sleep. */
137int prom_sleepsystem(void);
138
139/* Initiate a wakeup event. */
140int prom_wakeupsystem(void);
141
142/* MMU and memory related OBP interfaces. */
143
144/* Get unique string identifying SIMM at given physical address. */
145int prom_getunumber(int syndrome_code,
146 unsigned long phys_addr,
147 char *buf, int buflen);
148
149/* Retain physical memory to the caller across soft resets. */
150int prom_retain(const char *name, unsigned long size,
151 unsigned long align, unsigned long *paddr);
152
153/* Load explicit I/D TLB entries into the calling processor. */
154long prom_itlb_load(unsigned long index,
155 unsigned long tte_data,
156 unsigned long vaddr);
157
158long prom_dtlb_load(unsigned long index,
159 unsigned long tte_data,
160 unsigned long vaddr);
161
162/* Map/Unmap client program address ranges. First the format of
163 * the mapping mode argument.
164 */
165#define PROM_MAP_WRITE 0x0001 /* Writable */
166#define PROM_MAP_READ 0x0002 /* Readable - sw */
167#define PROM_MAP_EXEC 0x0004 /* Executable - sw */
168#define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */
169#define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */
170#define PROM_MAP_SE 0x0040 /* Side-Effects */
171#define PROM_MAP_GLOB 0x0080 /* Global */
172#define PROM_MAP_IE 0x0100 /* Invert-Endianness */
173#define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)
174
175int prom_map(int mode, unsigned long size,
176 unsigned long vaddr, unsigned long paddr);
177void prom_unmap(unsigned long size, unsigned long vaddr);
178
179
180/* PROM device tree traversal functions... */
181
182/* Get the child node of the given node, or zero if no child exists. */
183phandle prom_getchild(phandle parent_node);
184
185/* Get the next sibling node of the given node, or zero if no further
186 * siblings exist.
187 */
188phandle prom_getsibling(phandle node);
189
190/* Get the length, at the passed node, of the given property type.
191 * Returns -1 on error (ie. no such property at this node).
192 */
193int prom_getproplen(phandle thisnode, const char *property);
194
195/* Fetch the requested property using the given buffer. Returns
196 * the number of bytes the prom put into your buffer or -1 on error.
197 */
198int prom_getproperty(phandle thisnode, const char *property,
199 char *prop_buffer, int propbuf_size);
200
201/* Acquire an integer property. */
202int prom_getint(phandle node, const char *property);
203
204/* Acquire an integer property, with a default value. */
205int prom_getintdefault(phandle node, const char *property, int defval);
206
207/* Acquire a boolean property, 0=FALSE 1=TRUE. */
208int prom_getbool(phandle node, const char *prop);
209
210/* Acquire a string property, null string on error. */
211void prom_getstring(phandle node, const char *prop, char *buf,
212 int bufsize);
213
214/* Does the passed node have the given "name"? YES=1 NO=0 */
215int prom_nodematch(phandle thisnode, const char *name);
216
217/* Search all siblings starting at the passed node for "name" matching
218 * the given string. Returns the node on success, zero on failure.
219 */
220phandle prom_searchsiblings(phandle node_start, const char *name);
221
222/* Return the first property type, as a string, for the given node.
223 * Returns a null string on error. Buffer should be at least 32B long.
224 */
225char *prom_firstprop(phandle node, char *buffer);
226
227/* Returns the next property after the passed property for the given
228 * node. Returns null string on failure. Buffer should be at least 32B long.
229 */
230char *prom_nextprop(phandle node, const char *prev_property, char *buf);
231
232/* Returns 1 if the specified node has given property. */
233int prom_node_has_property(phandle node, const char *property);
234
235/* Returns phandle of the path specified */
236phandle prom_finddevice(const char *name);
237
238/* Set the indicated property at the given node with the passed value.
239 * Returns the number of bytes of your value that the prom took.
240 */
241int prom_setprop(phandle node, const char *prop_name, char *prop_value,
242 int value_size);
243
244phandle prom_inst2pkg(int);
245void prom_sun4v_guest_soft_state(void);
246
247int prom_ihandle2path(int handle, char *buffer, int bufsize);
248
249/* Client interface level routines. */
250void p1275_cmd_direct(unsigned long *);
251
252#endif /* !(__SPARC64_OPLIB_H) */
1/* oplib.h: Describes the interface and available routines in the
2 * Linux Prom library.
3 *
4 * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
5 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#ifndef __SPARC64_OPLIB_H
9#define __SPARC64_OPLIB_H
10
11#include <asm/openprom.h>
12
13/* OBP version string. */
14extern char prom_version[];
15
16/* Root node of the prom device tree, this stays constant after
17 * initialization is complete.
18 */
19extern phandle prom_root_node;
20
21/* PROM stdout */
22extern int prom_stdout;
23
24/* /chosen node of the prom device tree, this stays constant after
25 * initialization is complete.
26 */
27extern phandle prom_chosen_node;
28
29/* Helper values and strings in arch/sparc64/kernel/head.S */
30extern const char prom_peer_name[];
31extern const char prom_compatible_name[];
32extern const char prom_root_compatible[];
33extern const char prom_cpu_compatible[];
34extern const char prom_finddev_name[];
35extern const char prom_chosen_path[];
36extern const char prom_cpu_path[];
37extern const char prom_getprop_name[];
38extern const char prom_mmu_name[];
39extern const char prom_callmethod_name[];
40extern const char prom_translate_name[];
41extern const char prom_map_name[];
42extern const char prom_unmap_name[];
43extern int prom_mmu_ihandle_cache;
44extern unsigned int prom_boot_mapped_pc;
45extern unsigned int prom_boot_mapping_mode;
46extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;
47
48struct linux_mlist_p1275 {
49 struct linux_mlist_p1275 *theres_more;
50 unsigned long start_adr;
51 unsigned long num_bytes;
52};
53
54struct linux_mem_p1275 {
55 struct linux_mlist_p1275 **p1275_totphys;
56 struct linux_mlist_p1275 **p1275_prommap;
57 struct linux_mlist_p1275 **p1275_available; /* What we can use */
58};
59
60/* The functions... */
61
62/* You must call prom_init() before using any of the library services,
63 * preferably as early as possible. Pass it the romvec pointer.
64 */
65extern void prom_init(void *cif_handler, void *cif_stack);
66
67/* Boot argument acquisition, returns the boot command line string. */
68extern char *prom_getbootargs(void);
69
70/* Miscellaneous routines, don't really fit in any category per se. */
71
72/* Reboot the machine with the command line passed. */
73extern void prom_reboot(const char *boot_command);
74
75/* Evaluate the forth string passed. */
76extern void prom_feval(const char *forth_string);
77
78/* Enter the prom, with possibility of continuation with the 'go'
79 * command in newer proms.
80 */
81extern void prom_cmdline(void);
82
83/* Enter the prom, with no chance of continuation for the stand-alone
84 * which calls this.
85 */
86extern void prom_halt(void) __attribute__ ((noreturn));
87
88/* Halt and power-off the machine. */
89extern void prom_halt_power_off(void) __attribute__ ((noreturn));
90
91/* Acquire the IDPROM of the root node in the prom device tree. This
92 * gets passed a buffer where you would like it stuffed. The return value
93 * is the format type of this idprom or 0xff on error.
94 */
95extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
96
97/* Write a buffer of characters to the console. */
98extern void prom_console_write_buf(const char *buf, int len);
99
100/* Prom's internal routines, don't use in kernel/boot code. */
101extern void prom_printf(const char *fmt, ...);
102extern void prom_write(const char *buf, unsigned int len);
103
104/* Multiprocessor operations... */
105#ifdef CONFIG_SMP
106/* Start the CPU with the given device tree node at the passed program
107 * counter with the given arg passed in via register %o0.
108 */
109extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
110
111/* Start the CPU with the given cpu ID at the passed program
112 * counter with the given arg passed in via register %o0.
113 */
114extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
115
116/* Stop the CPU with the given cpu ID. */
117extern void prom_stopcpu_cpuid(int cpuid);
118
119/* Stop the current CPU. */
120extern void prom_stopself(void);
121
122/* Idle the current CPU. */
123extern void prom_idleself(void);
124
125/* Resume the CPU with the passed device tree node. */
126extern void prom_resumecpu(int cpunode);
127#endif
128
129/* Power management interfaces. */
130
131/* Put the current CPU to sleep. */
132extern void prom_sleepself(void);
133
134/* Put the entire system to sleep. */
135extern int prom_sleepsystem(void);
136
137/* Initiate a wakeup event. */
138extern int prom_wakeupsystem(void);
139
140/* MMU and memory related OBP interfaces. */
141
142/* Get unique string identifying SIMM at given physical address. */
143extern int prom_getunumber(int syndrome_code,
144 unsigned long phys_addr,
145 char *buf, int buflen);
146
147/* Retain physical memory to the caller across soft resets. */
148extern int prom_retain(const char *name, unsigned long size,
149 unsigned long align, unsigned long *paddr);
150
151/* Load explicit I/D TLB entries into the calling processor. */
152extern long prom_itlb_load(unsigned long index,
153 unsigned long tte_data,
154 unsigned long vaddr);
155
156extern long prom_dtlb_load(unsigned long index,
157 unsigned long tte_data,
158 unsigned long vaddr);
159
160/* Map/Unmap client program address ranges. First the format of
161 * the mapping mode argument.
162 */
163#define PROM_MAP_WRITE 0x0001 /* Writable */
164#define PROM_MAP_READ 0x0002 /* Readable - sw */
165#define PROM_MAP_EXEC 0x0004 /* Executable - sw */
166#define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */
167#define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */
168#define PROM_MAP_SE 0x0040 /* Side-Effects */
169#define PROM_MAP_GLOB 0x0080 /* Global */
170#define PROM_MAP_IE 0x0100 /* Invert-Endianness */
171#define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)
172
173extern int prom_map(int mode, unsigned long size,
174 unsigned long vaddr, unsigned long paddr);
175extern void prom_unmap(unsigned long size, unsigned long vaddr);
176
177
178/* PROM device tree traversal functions... */
179
180/* Get the child node of the given node, or zero if no child exists. */
181extern phandle prom_getchild(phandle parent_node);
182
183/* Get the next sibling node of the given node, or zero if no further
184 * siblings exist.
185 */
186extern phandle prom_getsibling(phandle node);
187
188/* Get the length, at the passed node, of the given property type.
189 * Returns -1 on error (ie. no such property at this node).
190 */
191extern int prom_getproplen(phandle thisnode, const char *property);
192
193/* Fetch the requested property using the given buffer. Returns
194 * the number of bytes the prom put into your buffer or -1 on error.
195 */
196extern int prom_getproperty(phandle thisnode, const char *property,
197 char *prop_buffer, int propbuf_size);
198
199/* Acquire an integer property. */
200extern int prom_getint(phandle node, const char *property);
201
202/* Acquire an integer property, with a default value. */
203extern int prom_getintdefault(phandle node, const char *property, int defval);
204
205/* Acquire a boolean property, 0=FALSE 1=TRUE. */
206extern int prom_getbool(phandle node, const char *prop);
207
208/* Acquire a string property, null string on error. */
209extern void prom_getstring(phandle node, const char *prop, char *buf,
210 int bufsize);
211
212/* Does the passed node have the given "name"? YES=1 NO=0 */
213extern int prom_nodematch(phandle thisnode, const char *name);
214
215/* Search all siblings starting at the passed node for "name" matching
216 * the given string. Returns the node on success, zero on failure.
217 */
218extern phandle prom_searchsiblings(phandle node_start, const char *name);
219
220/* Return the first property type, as a string, for the given node.
221 * Returns a null string on error. Buffer should be at least 32B long.
222 */
223extern char *prom_firstprop(phandle node, char *buffer);
224
225/* Returns the next property after the passed property for the given
226 * node. Returns null string on failure. Buffer should be at least 32B long.
227 */
228extern char *prom_nextprop(phandle node, const char *prev_property, char *buf);
229
230/* Returns 1 if the specified node has given property. */
231extern int prom_node_has_property(phandle node, const char *property);
232
233/* Returns phandle of the path specified */
234extern phandle prom_finddevice(const char *name);
235
236/* Set the indicated property at the given node with the passed value.
237 * Returns the number of bytes of your value that the prom took.
238 */
239extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
240 int value_size);
241
242extern phandle prom_inst2pkg(int);
243extern void prom_sun4v_guest_soft_state(void);
244
245extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
246
247/* Client interface level routines. */
248extern void p1275_cmd_direct(unsigned long *);
249
250#endif /* !(__SPARC64_OPLIB_H) */