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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/m68knommu/kernel/setup.c
4 *
5 * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com)
6 * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org>
7 * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com}
8 * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
9 * Copyright (C) 1995 Hamish Macdonald
10 * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
11 * Copyright (C) 2001 Lineo, Inc. <www.lineo.com>
12 *
13 * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
14 */
15
16/*
17 * This file handles the architecture-dependent parts of system setup
18 */
19
20#include <linux/kernel.h>
21#include <linux/sched.h>
22#include <linux/delay.h>
23#include <linux/interrupt.h>
24#include <linux/fb.h>
25#include <linux/module.h>
26#include <linux/mm.h>
27#include <linux/console.h>
28#include <linux/errno.h>
29#include <linux/string.h>
30#include <linux/memblock.h>
31#include <linux/seq_file.h>
32#include <linux/init.h>
33#include <linux/initrd.h>
34#include <linux/root_dev.h>
35#include <linux/rtc.h>
36
37#include <asm/setup.h>
38#include <asm/bootinfo.h>
39#include <asm/irq.h>
40#include <asm/machdep.h>
41#include <asm/pgtable.h>
42#include <asm/sections.h>
43
44unsigned long memory_start;
45unsigned long memory_end;
46
47EXPORT_SYMBOL(memory_start);
48EXPORT_SYMBOL(memory_end);
49
50char __initdata command_line[COMMAND_LINE_SIZE];
51
52/* machine dependent timer functions */
53void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL;
54int (*mach_hwclk) (int, struct rtc_time*);
55
56/* machine dependent reboot functions */
57void (*mach_reset)(void);
58void (*mach_halt)(void);
59void (*mach_power_off)(void);
60
61#ifdef CONFIG_M68000
62#if defined(CONFIG_M68328)
63#define CPU_NAME "MC68328"
64#elif defined(CONFIG_M68EZ328)
65#define CPU_NAME "MC68EZ328"
66#elif defined(CONFIG_M68VZ328)
67#define CPU_NAME "MC68VZ328"
68#else
69#define CPU_NAME "MC68000"
70#endif
71#endif /* CONFIG_M68000 */
72#ifndef CPU_NAME
73#define CPU_NAME "UNKNOWN"
74#endif
75
76/*
77 * Different cores have different instruction execution timings.
78 * The old/traditional 68000 cores are basically all the same, at 16.
79 * The ColdFire cores vary a little, their values are defined in their
80 * headers. We default to the standard 68000 value here.
81 */
82#ifndef CPU_INSTR_PER_JIFFY
83#define CPU_INSTR_PER_JIFFY 16
84#endif
85
86void __init setup_arch(char **cmdline_p)
87{
88 memory_start = PAGE_ALIGN(_ramstart);
89 memory_end = _ramend;
90
91 init_mm.start_code = (unsigned long) &_stext;
92 init_mm.end_code = (unsigned long) &_etext;
93 init_mm.end_data = (unsigned long) &_edata;
94 init_mm.brk = (unsigned long) 0;
95
96 config_BSP(&command_line[0], sizeof(command_line));
97
98#if defined(CONFIG_BOOTPARAM)
99 strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
100 command_line[sizeof(command_line) - 1] = 0;
101#endif /* CONFIG_BOOTPARAM */
102
103 process_uboot_commandline(&command_line[0], sizeof(command_line));
104
105 pr_info("uClinux with CPU " CPU_NAME "\n");
106
107#ifdef CONFIG_UCDIMM
108 pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
109#endif
110#ifdef CONFIG_M68VZ328
111 pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
112#endif
113#ifdef CONFIG_COLDFIRE
114 pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
115#ifdef CONFIG_M5307
116 pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
117#endif
118#ifdef CONFIG_ELITE
119 pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
120#endif
121#endif
122 pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
123
124#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
125 pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n");
126#endif
127#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
128 pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
129#endif
130#ifdef CONFIG_DRAGEN2
131 pr_info("DragonEngine II board support by Georges Menie\n");
132#endif
133#ifdef CONFIG_M5235EVB
134 pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
135#endif
136
137 pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
138 _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
139 pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
140 __bss_stop, memory_start, memory_start, memory_end);
141
142 memblock_add(memory_start, memory_end - memory_start);
143
144 /* Keep a copy of command line */
145 *cmdline_p = &command_line[0];
146 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
147 boot_command_line[COMMAND_LINE_SIZE-1] = 0;
148
149#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
150 conswitchp = &dummy_con;
151#endif
152
153 /*
154 * Give all the memory to the bootmap allocator, tell it to put the
155 * boot mem_map at the start of memory.
156 */
157 min_low_pfn = PFN_DOWN(memory_start);
158 max_pfn = max_low_pfn = PFN_DOWN(memory_end);
159
160#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
161 if ((initrd_start > 0) && (initrd_start < initrd_end) &&
162 (initrd_end < memory_end))
163 memblock_reserve(initrd_start, initrd_end - initrd_start);
164#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
165
166 /*
167 * Get kmalloc into gear.
168 */
169 paging_init();
170}
171
172/*
173 * Get CPU information for use by the procfs.
174 */
175static int show_cpuinfo(struct seq_file *m, void *v)
176{
177 char *cpu, *mmu, *fpu;
178 u_long clockfreq;
179
180 cpu = CPU_NAME;
181 mmu = "none";
182 fpu = "none";
183 clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
184
185 seq_printf(m, "CPU:\t\t%s\n"
186 "MMU:\t\t%s\n"
187 "FPU:\t\t%s\n"
188 "Clocking:\t%lu.%1luMHz\n"
189 "BogoMips:\t%lu.%02lu\n"
190 "Calibration:\t%lu loops\n",
191 cpu, mmu, fpu,
192 clockfreq / 1000000,
193 (clockfreq / 100000) % 10,
194 (loops_per_jiffy * HZ) / 500000,
195 ((loops_per_jiffy * HZ) / 5000) % 100,
196 (loops_per_jiffy * HZ));
197
198 return 0;
199}
200
201static void *c_start(struct seq_file *m, loff_t *pos)
202{
203 return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
204}
205
206static void *c_next(struct seq_file *m, void *v, loff_t *pos)
207{
208 ++*pos;
209 return c_start(m, pos);
210}
211
212static void c_stop(struct seq_file *m, void *v)
213{
214}
215
216const struct seq_operations cpuinfo_op = {
217 .start = c_start,
218 .next = c_next,
219 .stop = c_stop,
220 .show = show_cpuinfo,
221};
222
1/*
2 * linux/arch/m68knommu/kernel/setup.c
3 *
4 * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com)
5 * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org>
6 * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com}
7 * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
8 * Copyright (C) 1995 Hamish Macdonald
9 * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
10 * Copyright (C) 2001 Lineo, Inc. <www.lineo.com>
11 *
12 * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
13 */
14
15/*
16 * This file handles the architecture-dependent parts of system setup
17 */
18
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/delay.h>
22#include <linux/interrupt.h>
23#include <linux/fb.h>
24#include <linux/module.h>
25#include <linux/mm.h>
26#include <linux/console.h>
27#include <linux/errno.h>
28#include <linux/string.h>
29#include <linux/bootmem.h>
30#include <linux/seq_file.h>
31#include <linux/init.h>
32#include <linux/initrd.h>
33#include <linux/root_dev.h>
34#include <linux/rtc.h>
35
36#include <asm/setup.h>
37#include <asm/irq.h>
38#include <asm/machdep.h>
39#include <asm/pgtable.h>
40#include <asm/sections.h>
41
42unsigned long memory_start;
43unsigned long memory_end;
44
45EXPORT_SYMBOL(memory_start);
46EXPORT_SYMBOL(memory_end);
47
48char __initdata command_line[COMMAND_LINE_SIZE];
49
50/* machine dependent timer functions */
51void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL;
52int (*mach_set_clock_mmss)(unsigned long);
53int (*mach_hwclk) (int, struct rtc_time*);
54
55/* machine dependent reboot functions */
56void (*mach_reset)(void);
57void (*mach_halt)(void);
58void (*mach_power_off)(void);
59
60#ifdef CONFIG_M68000
61#if defined(CONFIG_M68328)
62#define CPU_NAME "MC68328"
63#elif defined(CONFIG_M68EZ328)
64#define CPU_NAME "MC68EZ328"
65#elif defined(CONFIG_M68VZ328)
66#define CPU_NAME "MC68VZ328"
67#else
68#define CPU_NAME "MC68000"
69#endif
70#endif /* CONFIG_M68000 */
71#ifndef CPU_NAME
72#define CPU_NAME "UNKNOWN"
73#endif
74
75/*
76 * Different cores have different instruction execution timings.
77 * The old/traditional 68000 cores are basically all the same, at 16.
78 * The ColdFire cores vary a little, their values are defined in their
79 * headers. We default to the standard 68000 value here.
80 */
81#ifndef CPU_INSTR_PER_JIFFY
82#define CPU_INSTR_PER_JIFFY 16
83#endif
84
85#if defined(CONFIG_UBOOT)
86/*
87 * parse_uboot_commandline
88 *
89 * Copies u-boot commandline arguments and store them in the proper linux
90 * variables.
91 *
92 * Assumes:
93 * _init_sp global contains the address in the stack pointer when the
94 * kernel starts (see head.S::_start)
95 *
96 * U-Boot calling convention:
97 * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
98 *
99 * _init_sp can be parsed as such
100 *
101 * _init_sp+00 = u-boot cmd after jsr into kernel (skip)
102 * _init_sp+04 = &kernel board_info (residual data)
103 * _init_sp+08 = &initrd_start
104 * _init_sp+12 = &initrd_end
105 * _init_sp+16 = &cmd_start
106 * _init_sp+20 = &cmd_end
107 *
108 * This also assumes that the memory locations pointed to are still
109 * unmodified. U-boot places them near the end of external SDRAM.
110 *
111 * Argument(s):
112 * commandp = the linux commandline arg container to fill.
113 * size = the sizeof commandp.
114 *
115 * Returns:
116 */
117static void __init parse_uboot_commandline(char *commandp, int size)
118{
119 extern unsigned long _init_sp;
120 unsigned long *sp;
121 unsigned long uboot_kbd;
122 unsigned long uboot_initrd_start, uboot_initrd_end;
123 unsigned long uboot_cmd_start, uboot_cmd_end;
124
125
126 sp = (unsigned long *)_init_sp;
127 uboot_kbd = sp[1];
128 uboot_initrd_start = sp[2];
129 uboot_initrd_end = sp[3];
130 uboot_cmd_start = sp[4];
131 uboot_cmd_end = sp[5];
132
133 if (uboot_cmd_start && uboot_cmd_end)
134 strncpy(commandp, (const char *)uboot_cmd_start, size);
135#if defined(CONFIG_BLK_DEV_INITRD)
136 if (uboot_initrd_start && uboot_initrd_end &&
137 (uboot_initrd_end > uboot_initrd_start)) {
138 initrd_start = uboot_initrd_start;
139 initrd_end = uboot_initrd_end;
140 ROOT_DEV = Root_RAM0;
141 printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
142 initrd_start, initrd_end);
143 }
144#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
145}
146#endif /* #if defined(CONFIG_UBOOT) */
147
148void __init setup_arch(char **cmdline_p)
149{
150 int bootmap_size;
151
152 memory_start = PAGE_ALIGN(_ramstart);
153 memory_end = _ramend;
154
155 init_mm.start_code = (unsigned long) &_stext;
156 init_mm.end_code = (unsigned long) &_etext;
157 init_mm.end_data = (unsigned long) &_edata;
158 init_mm.brk = (unsigned long) 0;
159
160 config_BSP(&command_line[0], sizeof(command_line));
161
162#if defined(CONFIG_BOOTPARAM)
163 strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
164 command_line[sizeof(command_line) - 1] = 0;
165#endif /* CONFIG_BOOTPARAM */
166
167#if defined(CONFIG_UBOOT)
168 /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */
169 #if defined(CONFIG_BOOTPARAM)
170 /* Add the whitespace separator */
171 command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';
172 /* Parse uboot command line into the rest of the buffer */
173 parse_uboot_commandline(
174 &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],
175 (sizeof(command_line) -
176 (strlen(CONFIG_BOOTPARAM_STRING)+1)));
177 /* Only CONFIG_UBOOT defined, create cmdline */
178 #else
179 parse_uboot_commandline(&command_line[0], sizeof(command_line));
180 #endif /* CONFIG_BOOTPARAM */
181 command_line[sizeof(command_line) - 1] = 0;
182#endif /* CONFIG_UBOOT */
183
184 printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n");
185
186#ifdef CONFIG_UCDIMM
187 printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
188#endif
189#ifdef CONFIG_M68VZ328
190 printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
191#endif
192#ifdef CONFIG_COLDFIRE
193 printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
194#ifdef CONFIG_M5307
195 printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
196#endif
197#ifdef CONFIG_ELITE
198 printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
199#endif
200#endif
201 printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
202
203#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
204 printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
205#endif
206#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
207 printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
208#endif
209#ifdef CONFIG_DRAGEN2
210 printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
211#endif
212#ifdef CONFIG_M5235EVB
213 printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
214#endif
215
216 pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
217 _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
218 pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
219 __bss_stop, memory_start, memory_start, memory_end);
220
221 /* Keep a copy of command line */
222 *cmdline_p = &command_line[0];
223 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
224 boot_command_line[COMMAND_LINE_SIZE-1] = 0;
225
226#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
227 conswitchp = &dummy_con;
228#endif
229
230 /*
231 * Give all the memory to the bootmap allocator, tell it to put the
232 * boot mem_map at the start of memory.
233 */
234 min_low_pfn = PFN_DOWN(memory_start);
235 max_pfn = max_low_pfn = PFN_DOWN(memory_end);
236
237 bootmap_size = init_bootmem_node(
238 NODE_DATA(0),
239 min_low_pfn, /* map goes here */
240 PFN_DOWN(PAGE_OFFSET),
241 max_pfn);
242 /*
243 * Free the usable memory, we have to make sure we do not free
244 * the bootmem bitmap so we then reserve it after freeing it :-)
245 */
246 free_bootmem(memory_start, memory_end - memory_start);
247 reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
248
249#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
250 if ((initrd_start > 0) && (initrd_start < initrd_end) &&
251 (initrd_end < memory_end))
252 reserve_bootmem(initrd_start, initrd_end - initrd_start,
253 BOOTMEM_DEFAULT);
254#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
255
256 /*
257 * Get kmalloc into gear.
258 */
259 paging_init();
260}
261
262/*
263 * Get CPU information for use by the procfs.
264 */
265static int show_cpuinfo(struct seq_file *m, void *v)
266{
267 char *cpu, *mmu, *fpu;
268 u_long clockfreq;
269
270 cpu = CPU_NAME;
271 mmu = "none";
272 fpu = "none";
273 clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
274
275 seq_printf(m, "CPU:\t\t%s\n"
276 "MMU:\t\t%s\n"
277 "FPU:\t\t%s\n"
278 "Clocking:\t%lu.%1luMHz\n"
279 "BogoMips:\t%lu.%02lu\n"
280 "Calibration:\t%lu loops\n",
281 cpu, mmu, fpu,
282 clockfreq / 1000000,
283 (clockfreq / 100000) % 10,
284 (loops_per_jiffy * HZ) / 500000,
285 ((loops_per_jiffy * HZ) / 5000) % 100,
286 (loops_per_jiffy * HZ));
287
288 return 0;
289}
290
291static void *c_start(struct seq_file *m, loff_t *pos)
292{
293 return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
294}
295
296static void *c_next(struct seq_file *m, void *v, loff_t *pos)
297{
298 ++*pos;
299 return c_start(m, pos);
300}
301
302static void c_stop(struct seq_file *m, void *v)
303{
304}
305
306const struct seq_operations cpuinfo_op = {
307 .start = c_start,
308 .next = c_next,
309 .stop = c_stop,
310 .show = show_cpuinfo,
311};
312