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1da177e4 LT |
1 | /* |
2 | * linux/arch/m68knommu/kernel/setup.c | |
3 | * | |
2f75d109 GU |
4 | * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com) |
5 | * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org> | |
1da177e4 LT |
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 | |
e6070a17 | 9 | * Copyright (C) 2000 Lineo Inc. (www.lineo.com) |
1da177e4 LT |
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 | ||
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/sched.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/interrupt.h> | |
1da177e4 | 23 | #include <linux/fb.h> |
e6070a17 | 24 | #include <linux/module.h> |
27ac792c | 25 | #include <linux/mm.h> |
1da177e4 | 26 | #include <linux/console.h> |
1da177e4 LT |
27 | #include <linux/errno.h> |
28 | #include <linux/string.h> | |
1da177e4 LT |
29 | #include <linux/bootmem.h> |
30 | #include <linux/seq_file.h> | |
1da177e4 | 31 | #include <linux/init.h> |
588baeac LS |
32 | #include <linux/initrd.h> |
33 | #include <linux/root_dev.h> | |
95177461 | 34 | #include <linux/rtc.h> |
1da177e4 LT |
35 | |
36 | #include <asm/setup.h> | |
37 | #include <asm/irq.h> | |
38 | #include <asm/machdep.h> | |
1da177e4 | 39 | #include <asm/pgtable.h> |
c06e9bb4 | 40 | #include <asm/sections.h> |
1da177e4 | 41 | |
1da177e4 LT |
42 | unsigned long memory_start; |
43 | unsigned long memory_end; | |
44 | ||
e6070a17 GU |
45 | EXPORT_SYMBOL(memory_start); |
46 | EXPORT_SYMBOL(memory_end); | |
47 | ||
f2a09e19 | 48 | char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 | 49 | |
1da177e4 | 50 | /* machine dependent timer functions */ |
35aefb26 | 51 | void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL; |
2f75d109 | 52 | int (*mach_set_clock_mmss)(unsigned long); |
95177461 | 53 | int (*mach_hwclk) (int, struct rtc_time*); |
2f75d109 GU |
54 | |
55 | /* machine dependent reboot functions */ | |
56 | void (*mach_reset)(void); | |
57 | void (*mach_halt)(void); | |
58 | void (*mach_power_off)(void); | |
1da177e4 | 59 | |
1a62fe8d | 60 | #ifdef CONFIG_M68000 |
5198f847 | 61 | #if defined(CONFIG_M68328) |
7fc82b65 | 62 | #define CPU_NAME "MC68328" |
5198f847 | 63 | #elif defined(CONFIG_M68EZ328) |
7fc82b65 | 64 | #define CPU_NAME "MC68EZ328" |
5198f847 | 65 | #elif defined(CONFIG_M68VZ328) |
7fc82b65 | 66 | #define CPU_NAME "MC68VZ328" |
5198f847 DP |
67 | #else |
68 | #define CPU_NAME "MC68000" | |
1da177e4 | 69 | #endif |
5198f847 | 70 | #endif /* CONFIG_M68000 */ |
1da177e4 | 71 | #ifdef CONFIG_M68360 |
7fc82b65 | 72 | #define CPU_NAME "MC68360" |
1da177e4 | 73 | #endif |
7fc82b65 GU |
74 | #ifndef CPU_NAME |
75 | #define CPU_NAME "UNKNOWN" | |
1da177e4 LT |
76 | #endif |
77 | ||
733f31b7 GU |
78 | /* |
79 | * Different cores have different instruction execution timings. | |
80 | * The old/traditional 68000 cores are basically all the same, at 16. | |
81 | * The ColdFire cores vary a little, their values are defined in their | |
82 | * headers. We default to the standard 68000 value here. | |
83 | */ | |
84 | #ifndef CPU_INSTR_PER_JIFFY | |
85 | #define CPU_INSTR_PER_JIFFY 16 | |
86 | #endif | |
87 | ||
588baeac LS |
88 | #if defined(CONFIG_UBOOT) |
89 | /* | |
90 | * parse_uboot_commandline | |
91 | * | |
92 | * Copies u-boot commandline arguments and store them in the proper linux | |
93 | * variables. | |
94 | * | |
95 | * Assumes: | |
96 | * _init_sp global contains the address in the stack pointer when the | |
97 | * kernel starts (see head.S::_start) | |
98 | * | |
99 | * U-Boot calling convention: | |
100 | * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); | |
101 | * | |
102 | * _init_sp can be parsed as such | |
103 | * | |
104 | * _init_sp+00 = u-boot cmd after jsr into kernel (skip) | |
105 | * _init_sp+04 = &kernel board_info (residual data) | |
106 | * _init_sp+08 = &initrd_start | |
107 | * _init_sp+12 = &initrd_end | |
108 | * _init_sp+16 = &cmd_start | |
109 | * _init_sp+20 = &cmd_end | |
110 | * | |
111 | * This also assumes that the memory locations pointed to are still | |
112 | * unmodified. U-boot places them near the end of external SDRAM. | |
113 | * | |
114 | * Argument(s): | |
115 | * commandp = the linux commandline arg container to fill. | |
116 | * size = the sizeof commandp. | |
117 | * | |
118 | * Returns: | |
119 | */ | |
df592eb5 | 120 | static void __init parse_uboot_commandline(char *commandp, int size) |
588baeac LS |
121 | { |
122 | extern unsigned long _init_sp; | |
123 | unsigned long *sp; | |
124 | unsigned long uboot_kbd; | |
125 | unsigned long uboot_initrd_start, uboot_initrd_end; | |
126 | unsigned long uboot_cmd_start, uboot_cmd_end; | |
127 | ||
128 | ||
129 | sp = (unsigned long *)_init_sp; | |
130 | uboot_kbd = sp[1]; | |
131 | uboot_initrd_start = sp[2]; | |
132 | uboot_initrd_end = sp[3]; | |
133 | uboot_cmd_start = sp[4]; | |
134 | uboot_cmd_end = sp[5]; | |
135 | ||
136 | if (uboot_cmd_start && uboot_cmd_end) | |
137 | strncpy(commandp, (const char *)uboot_cmd_start, size); | |
138 | #if defined(CONFIG_BLK_DEV_INITRD) | |
139 | if (uboot_initrd_start && uboot_initrd_end && | |
140 | (uboot_initrd_end > uboot_initrd_start)) { | |
141 | initrd_start = uboot_initrd_start; | |
142 | initrd_end = uboot_initrd_end; | |
143 | ROOT_DEV = Root_RAM0; | |
144 | printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", | |
145 | initrd_start, initrd_end); | |
146 | } | |
147 | #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ | |
148 | } | |
149 | #endif /* #if defined(CONFIG_UBOOT) */ | |
150 | ||
1d2842e0 | 151 | void __init setup_arch(char **cmdline_p) |
1da177e4 LT |
152 | { |
153 | int bootmap_size; | |
154 | ||
1da177e4 | 155 | memory_start = PAGE_ALIGN(_ramstart); |
2f75d109 | 156 | memory_end = _ramend; |
1da177e4 LT |
157 | |
158 | init_mm.start_code = (unsigned long) &_stext; | |
159 | init_mm.end_code = (unsigned long) &_etext; | |
160 | init_mm.end_data = (unsigned long) &_edata; | |
e6070a17 | 161 | init_mm.brk = (unsigned long) 0; |
1da177e4 LT |
162 | |
163 | config_BSP(&command_line[0], sizeof(command_line)); | |
164 | ||
bc72450a GU |
165 | #if defined(CONFIG_BOOTPARAM) |
166 | strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); | |
167 | command_line[sizeof(command_line) - 1] = 0; | |
588baeac LS |
168 | #endif /* CONFIG_BOOTPARAM */ |
169 | ||
170 | #if defined(CONFIG_UBOOT) | |
171 | /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ | |
172 | #if defined(CONFIG_BOOTPARAM) | |
173 | /* Add the whitespace separator */ | |
174 | command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; | |
175 | /* Parse uboot command line into the rest of the buffer */ | |
176 | parse_uboot_commandline( | |
177 | &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], | |
178 | (sizeof(command_line) - | |
179 | (strlen(CONFIG_BOOTPARAM_STRING)+1))); | |
180 | /* Only CONFIG_UBOOT defined, create cmdline */ | |
181 | #else | |
182 | parse_uboot_commandline(&command_line[0], sizeof(command_line)); | |
183 | #endif /* CONFIG_BOOTPARAM */ | |
184 | command_line[sizeof(command_line) - 1] = 0; | |
185 | #endif /* CONFIG_UBOOT */ | |
bc72450a | 186 | |
7fc82b65 | 187 | printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); |
1da177e4 LT |
188 | |
189 | #ifdef CONFIG_UCDIMM | |
190 | printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); | |
191 | #endif | |
192 | #ifdef CONFIG_M68VZ328 | |
193 | printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); | |
194 | #endif | |
195 | #ifdef CONFIG_COLDFIRE | |
196 | printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); | |
197 | #ifdef CONFIG_M5307 | |
198 | printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); | |
199 | #endif | |
200 | #ifdef CONFIG_ELITE | |
201 | printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); | |
e6070a17 | 202 | #endif |
1da177e4 LT |
203 | #endif |
204 | printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); | |
205 | ||
206 | #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) | |
207 | printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n"); | |
208 | #endif | |
1da177e4 LT |
209 | #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) |
210 | printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); | |
211 | #endif | |
1da177e4 LT |
212 | #if defined (CONFIG_M68360) |
213 | printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n"); | |
214 | printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n"); | |
215 | #endif | |
216 | #ifdef CONFIG_DRAGEN2 | |
217 | printk(KERN_INFO "DragonEngine II board support by Georges Menie\n"); | |
218 | #endif | |
e6070a17 | 219 | #ifdef CONFIG_M5235EVB |
008150f5 | 220 | printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); |
e6070a17 | 221 | #endif |
1da177e4 | 222 | |
54503b1d | 223 | pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", |
dc061051 | 224 | _stext, _etext, _sdata, _edata, __bss_start, __bss_stop); |
54503b1d | 225 | pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ", |
dc061051 | 226 | __bss_stop, memory_start, memory_start, memory_end); |
1da177e4 LT |
227 | |
228 | /* Keep a copy of command line */ | |
229 | *cmdline_p = &command_line[0]; | |
f2a09e19 ABL |
230 | memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); |
231 | boot_command_line[COMMAND_LINE_SIZE-1] = 0; | |
1da177e4 | 232 | |
1da177e4 LT |
233 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) |
234 | conswitchp = &dummy_con; | |
235 | #endif | |
236 | ||
237 | /* | |
238 | * Give all the memory to the bootmap allocator, tell it to put the | |
239 | * boot mem_map at the start of memory. | |
240 | */ | |
b66f55cd GU |
241 | min_low_pfn = PFN_DOWN(memory_start); |
242 | max_pfn = max_low_pfn = PFN_DOWN(memory_end); | |
243 | ||
1da177e4 LT |
244 | bootmap_size = init_bootmem_node( |
245 | NODE_DATA(0), | |
b66f55cd GU |
246 | min_low_pfn, /* map goes here */ |
247 | PFN_DOWN(PAGE_OFFSET), | |
248 | max_pfn); | |
1da177e4 LT |
249 | /* |
250 | * Free the usable memory, we have to make sure we do not free | |
251 | * the bootmem bitmap so we then reserve it after freeing it :-) | |
252 | */ | |
253 | free_bootmem(memory_start, memory_end - memory_start); | |
72a7fe39 | 254 | reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); |
1da177e4 | 255 | |
588baeac LS |
256 | #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) |
257 | if ((initrd_start > 0) && (initrd_start < initrd_end) && | |
258 | (initrd_end < memory_end)) | |
259 | reserve_bootmem(initrd_start, initrd_end - initrd_start, | |
260 | BOOTMEM_DEFAULT); | |
261 | #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ | |
262 | ||
1da177e4 LT |
263 | /* |
264 | * Get kmalloc into gear. | |
265 | */ | |
266 | paging_init(); | |
267 | } | |
268 | ||
1da177e4 LT |
269 | /* |
270 | * Get CPU information for use by the procfs. | |
271 | */ | |
1da177e4 LT |
272 | static int show_cpuinfo(struct seq_file *m, void *v) |
273 | { | |
22982a56 GU |
274 | char *cpu, *mmu, *fpu; |
275 | u_long clockfreq; | |
1da177e4 | 276 | |
7fc82b65 | 277 | cpu = CPU_NAME; |
22982a56 GU |
278 | mmu = "none"; |
279 | fpu = "none"; | |
733f31b7 | 280 | clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; |
22982a56 GU |
281 | |
282 | seq_printf(m, "CPU:\t\t%s\n" | |
283 | "MMU:\t\t%s\n" | |
284 | "FPU:\t\t%s\n" | |
285 | "Clocking:\t%lu.%1luMHz\n" | |
286 | "BogoMips:\t%lu.%02lu\n" | |
287 | "Calibration:\t%lu loops\n", | |
288 | cpu, mmu, fpu, | |
289 | clockfreq / 1000000, | |
290 | (clockfreq / 100000) % 10, | |
291 | (loops_per_jiffy * HZ) / 500000, | |
292 | ((loops_per_jiffy * HZ) / 5000) % 100, | |
293 | (loops_per_jiffy * HZ)); | |
1da177e4 LT |
294 | |
295 | return 0; | |
296 | } | |
297 | ||
298 | static void *c_start(struct seq_file *m, loff_t *pos) | |
299 | { | |
300 | return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; | |
301 | } | |
302 | ||
303 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
304 | { | |
305 | ++*pos; | |
306 | return c_start(m, pos); | |
307 | } | |
308 | ||
309 | static void c_stop(struct seq_file *m, void *v) | |
310 | { | |
311 | } | |
312 | ||
03a44825 | 313 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
314 | .start = c_start, |
315 | .next = c_next, | |
316 | .stop = c_stop, | |
317 | .show = show_cpuinfo, | |
318 | }; | |
319 |