Commit | Line | Data |
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5f97f7f9 HS |
1 | /* |
2 | * Copyright (C) 2004-2006 Atmel Corporation | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/clk.h> | |
10 | #include <linux/init.h> | |
5539f59a | 11 | #include <linux/initrd.h> |
5f97f7f9 HS |
12 | #include <linux/sched.h> |
13 | #include <linux/console.h> | |
14 | #include <linux/ioport.h> | |
15 | #include <linux/bootmem.h> | |
16 | #include <linux/fs.h> | |
17 | #include <linux/module.h> | |
5539f59a | 18 | #include <linux/pfn.h> |
5f97f7f9 HS |
19 | #include <linux/root_dev.h> |
20 | #include <linux/cpu.h> | |
10b50b7d | 21 | #include <linux/kernel.h> |
5f97f7f9 HS |
22 | |
23 | #include <asm/sections.h> | |
24 | #include <asm/processor.h> | |
25 | #include <asm/pgtable.h> | |
26 | #include <asm/setup.h> | |
27 | #include <asm/sysreg.h> | |
28 | ||
29 | #include <asm/arch/board.h> | |
30 | #include <asm/arch/init.h> | |
31 | ||
32 | extern int root_mountflags; | |
33 | ||
5f97f7f9 HS |
34 | /* |
35 | * Initialize loops_per_jiffy as 5000000 (500MIPS). | |
36 | * Better make it too large than too small... | |
37 | */ | |
38 | struct avr32_cpuinfo boot_cpu_data = { | |
39 | .loops_per_jiffy = 5000000 | |
40 | }; | |
41 | EXPORT_SYMBOL(boot_cpu_data); | |
42 | ||
bf4352c0 | 43 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
5f97f7f9 HS |
44 | |
45 | /* | |
d8011768 | 46 | * Standard memory resources |
5f97f7f9 | 47 | */ |
d8011768 HS |
48 | static struct resource __initdata kernel_data = { |
49 | .name = "Kernel data", | |
50 | .start = 0, | |
51 | .end = 0, | |
52 | .flags = IORESOURCE_MEM, | |
53 | }; | |
54 | static struct resource __initdata kernel_code = { | |
55 | .name = "Kernel code", | |
56 | .start = 0, | |
57 | .end = 0, | |
58 | .flags = IORESOURCE_MEM, | |
59 | .sibling = &kernel_data, | |
60 | }; | |
5f97f7f9 HS |
61 | |
62 | /* | |
d8011768 HS |
63 | * Available system RAM and reserved regions as singly linked |
64 | * lists. These lists are traversed using the sibling pointer in | |
65 | * struct resource and are kept sorted at all times. | |
5f97f7f9 | 66 | */ |
d8011768 HS |
67 | static struct resource *__initdata system_ram; |
68 | static struct resource *__initdata reserved = &kernel_code; | |
69 | ||
70 | /* | |
71 | * We need to allocate these before the bootmem allocator is up and | |
72 | * running, so we need this "cache". 32 entries are probably enough | |
73 | * for all but the most insanely complex systems. | |
74 | */ | |
75 | static struct resource __initdata res_cache[32]; | |
76 | static unsigned int __initdata res_cache_next_free; | |
77 | ||
78 | static void __init resource_init(void) | |
79 | { | |
80 | struct resource *mem, *res; | |
81 | struct resource *new; | |
82 | ||
83 | kernel_code.start = __pa(init_mm.start_code); | |
84 | ||
85 | for (mem = system_ram; mem; mem = mem->sibling) { | |
86 | new = alloc_bootmem_low(sizeof(struct resource)); | |
87 | memcpy(new, mem, sizeof(struct resource)); | |
88 | ||
89 | new->sibling = NULL; | |
90 | if (request_resource(&iomem_resource, new)) | |
91 | printk(KERN_WARNING "Bad RAM resource %08x-%08x\n", | |
92 | mem->start, mem->end); | |
93 | } | |
94 | ||
95 | for (res = reserved; res; res = res->sibling) { | |
96 | new = alloc_bootmem_low(sizeof(struct resource)); | |
97 | memcpy(new, res, sizeof(struct resource)); | |
98 | ||
99 | new->sibling = NULL; | |
100 | if (insert_resource(&iomem_resource, new)) | |
101 | printk(KERN_WARNING | |
102 | "Bad reserved resource %s (%08x-%08x)\n", | |
103 | res->name, res->start, res->end); | |
104 | } | |
105 | } | |
106 | ||
107 | static void __init | |
108 | add_physical_memory(resource_size_t start, resource_size_t end) | |
109 | { | |
110 | struct resource *new, *next, **pprev; | |
111 | ||
112 | for (pprev = &system_ram, next = system_ram; next; | |
113 | pprev = &next->sibling, next = next->sibling) { | |
114 | if (end < next->start) | |
115 | break; | |
116 | if (start <= next->end) { | |
117 | printk(KERN_WARNING | |
118 | "Warning: Physical memory map is broken\n"); | |
119 | printk(KERN_WARNING | |
120 | "Warning: %08x-%08x overlaps %08x-%08x\n", | |
121 | start, end, next->start, next->end); | |
122 | return; | |
123 | } | |
124 | } | |
125 | ||
126 | if (res_cache_next_free >= ARRAY_SIZE(res_cache)) { | |
127 | printk(KERN_WARNING | |
128 | "Warning: Failed to add physical memory %08x-%08x\n", | |
129 | start, end); | |
130 | return; | |
131 | } | |
132 | ||
133 | new = &res_cache[res_cache_next_free++]; | |
134 | new->start = start; | |
135 | new->end = end; | |
136 | new->name = "System RAM"; | |
137 | new->flags = IORESOURCE_MEM; | |
138 | ||
139 | *pprev = new; | |
140 | } | |
141 | ||
142 | static int __init | |
143 | add_reserved_region(resource_size_t start, resource_size_t end, | |
144 | const char *name) | |
145 | { | |
146 | struct resource *new, *next, **pprev; | |
5f97f7f9 | 147 | |
d8011768 HS |
148 | if (end < start) |
149 | return -EINVAL; | |
150 | ||
151 | if (res_cache_next_free >= ARRAY_SIZE(res_cache)) | |
152 | return -ENOMEM; | |
153 | ||
154 | for (pprev = &reserved, next = reserved; next; | |
155 | pprev = &next->sibling, next = next->sibling) { | |
156 | if (end < next->start) | |
157 | break; | |
158 | if (start <= next->end) | |
159 | return -EBUSY; | |
160 | } | |
161 | ||
162 | new = &res_cache[res_cache_next_free++]; | |
163 | new->start = start; | |
164 | new->end = end; | |
165 | new->name = name; | |
a2a39525 | 166 | new->sibling = next; |
d8011768 HS |
167 | new->flags = IORESOURCE_MEM; |
168 | ||
169 | *pprev = new; | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | static unsigned long __init | |
175 | find_free_region(const struct resource *mem, resource_size_t size, | |
176 | resource_size_t align) | |
177 | { | |
178 | struct resource *res; | |
179 | unsigned long target; | |
180 | ||
181 | target = ALIGN(mem->start, align); | |
182 | for (res = reserved; res; res = res->sibling) { | |
183 | if ((target + size) <= res->start) | |
184 | break; | |
185 | if (target <= res->end) | |
186 | target = ALIGN(res->end + 1, align); | |
187 | } | |
188 | ||
189 | if ((target + size) > (mem->end + 1)) | |
190 | return mem->end + 1; | |
191 | ||
192 | return target; | |
193 | } | |
5f97f7f9 | 194 | |
f9692b95 HS |
195 | static int __init |
196 | alloc_reserved_region(resource_size_t *start, resource_size_t size, | |
197 | resource_size_t align, const char *name) | |
198 | { | |
199 | struct resource *mem; | |
200 | resource_size_t target; | |
201 | int ret; | |
202 | ||
203 | for (mem = system_ram; mem; mem = mem->sibling) { | |
204 | target = find_free_region(mem, size, align); | |
205 | if (target <= mem->end) { | |
206 | ret = add_reserved_region(target, target + size - 1, | |
207 | name); | |
208 | if (!ret) | |
209 | *start = target; | |
210 | return ret; | |
211 | } | |
212 | } | |
213 | ||
214 | return -ENOMEM; | |
215 | } | |
216 | ||
5f97f7f9 HS |
217 | /* |
218 | * Early framebuffer allocation. Works as follows: | |
219 | * - If fbmem_size is zero, nothing will be allocated or reserved. | |
220 | * - If fbmem_start is zero when setup_bootmem() is called, | |
f9692b95 HS |
221 | * a block of fbmem_size bytes will be reserved before bootmem |
222 | * initialization. It will be aligned to the largest page size | |
223 | * that fbmem_size is a multiple of. | |
5f97f7f9 | 224 | * - If fbmem_start is nonzero, an area of size fbmem_size will be |
f9692b95 HS |
225 | * reserved at the physical address fbmem_start if possible. If |
226 | * it collides with other reserved memory, a different block of | |
227 | * same size will be allocated, just as if fbmem_start was zero. | |
5f97f7f9 HS |
228 | * |
229 | * Board-specific code may use these variables to set up platform data | |
230 | * for the framebuffer driver if fbmem_size is nonzero. | |
231 | */ | |
d80e2bb1 HS |
232 | resource_size_t __initdata fbmem_start; |
233 | resource_size_t __initdata fbmem_size; | |
5f97f7f9 HS |
234 | |
235 | /* | |
236 | * "fbmem=xxx[kKmM]" allocates the specified amount of boot memory for | |
237 | * use as framebuffer. | |
238 | * | |
239 | * "fbmem=xxx[kKmM]@yyy[kKmM]" defines a memory region of size xxx and | |
240 | * starting at yyy to be reserved for use as framebuffer. | |
241 | * | |
242 | * The kernel won't verify that the memory region starting at yyy | |
243 | * actually contains usable RAM. | |
244 | */ | |
245 | static int __init early_parse_fbmem(char *p) | |
246 | { | |
f9692b95 HS |
247 | int ret; |
248 | unsigned long align; | |
249 | ||
5f97f7f9 | 250 | fbmem_size = memparse(p, &p); |
f9692b95 | 251 | if (*p == '@') { |
fe57f84e | 252 | fbmem_start = memparse(p + 1, &p); |
f9692b95 HS |
253 | ret = add_reserved_region(fbmem_start, |
254 | fbmem_start + fbmem_size - 1, | |
255 | "Framebuffer"); | |
256 | if (ret) { | |
257 | printk(KERN_WARNING | |
258 | "Failed to reserve framebuffer memory\n"); | |
259 | fbmem_start = 0; | |
260 | } | |
261 | } | |
262 | ||
263 | if (!fbmem_start) { | |
264 | if ((fbmem_size & 0x000fffffUL) == 0) | |
265 | align = 0x100000; /* 1 MiB */ | |
266 | else if ((fbmem_size & 0x0000ffffUL) == 0) | |
267 | align = 0x10000; /* 64 KiB */ | |
268 | else | |
269 | align = 0x1000; /* 4 KiB */ | |
270 | ||
271 | ret = alloc_reserved_region(&fbmem_start, fbmem_size, | |
272 | align, "Framebuffer"); | |
273 | if (ret) { | |
274 | printk(KERN_WARNING | |
275 | "Failed to allocate framebuffer memory\n"); | |
276 | fbmem_size = 0; | |
01d3a5e7 HS |
277 | } else { |
278 | memset(__va(fbmem_start), 0, fbmem_size); | |
f9692b95 HS |
279 | } |
280 | } | |
281 | ||
5f97f7f9 HS |
282 | return 0; |
283 | } | |
284 | early_param("fbmem", early_parse_fbmem); | |
285 | ||
5f97f7f9 HS |
286 | static int __init parse_tag_core(struct tag *tag) |
287 | { | |
288 | if (tag->hdr.size > 2) { | |
289 | if ((tag->u.core.flags & 1) == 0) | |
290 | root_mountflags &= ~MS_RDONLY; | |
291 | ROOT_DEV = new_decode_dev(tag->u.core.rootdev); | |
292 | } | |
293 | return 0; | |
294 | } | |
295 | __tagtable(ATAG_CORE, parse_tag_core); | |
296 | ||
d8011768 | 297 | static int __init parse_tag_mem(struct tag *tag) |
5f97f7f9 | 298 | { |
d8011768 | 299 | unsigned long start, end; |
5f97f7f9 HS |
300 | |
301 | /* | |
302 | * Ignore zero-sized entries. If we're running standalone, the | |
303 | * SDRAM code may emit such entries if something goes | |
304 | * wrong... | |
305 | */ | |
306 | if (tag->u.mem_range.size == 0) | |
307 | return 0; | |
308 | ||
d8011768 HS |
309 | start = tag->u.mem_range.addr; |
310 | end = tag->u.mem_range.addr + tag->u.mem_range.size - 1; | |
5f97f7f9 | 311 | |
d8011768 HS |
312 | add_physical_memory(start, end); |
313 | return 0; | |
314 | } | |
315 | __tagtable(ATAG_MEM, parse_tag_mem); | |
5f97f7f9 | 316 | |
d8011768 HS |
317 | static int __init parse_tag_rdimg(struct tag *tag) |
318 | { | |
f3e26984 | 319 | #ifdef CONFIG_BLK_DEV_INITRD |
d8011768 HS |
320 | struct tag_mem_range *mem = &tag->u.mem_range; |
321 | int ret; | |
322 | ||
323 | if (initrd_start) { | |
324 | printk(KERN_WARNING | |
325 | "Warning: Only the first initrd image will be used\n"); | |
326 | return 0; | |
5f97f7f9 HS |
327 | } |
328 | ||
aa15f637 | 329 | ret = add_reserved_region(mem->addr, mem->addr + mem->size - 1, |
d8011768 HS |
330 | "initrd"); |
331 | if (ret) { | |
332 | printk(KERN_WARNING | |
333 | "Warning: Failed to reserve initrd memory\n"); | |
334 | return ret; | |
335 | } | |
336 | ||
337 | initrd_start = (unsigned long)__va(mem->addr); | |
338 | initrd_end = initrd_start + mem->size; | |
339 | #else | |
340 | printk(KERN_WARNING "RAM disk image present, but " | |
341 | "no initrd support in kernel, ignoring\n"); | |
342 | #endif | |
5f97f7f9 HS |
343 | |
344 | return 0; | |
345 | } | |
d8011768 | 346 | __tagtable(ATAG_RDIMG, parse_tag_rdimg); |
5f97f7f9 | 347 | |
d8011768 | 348 | static int __init parse_tag_rsvd_mem(struct tag *tag) |
5f97f7f9 | 349 | { |
d8011768 HS |
350 | struct tag_mem_range *mem = &tag->u.mem_range; |
351 | ||
352 | return add_reserved_region(mem->addr, mem->addr + mem->size - 1, | |
353 | "Reserved"); | |
5f97f7f9 | 354 | } |
d8011768 | 355 | __tagtable(ATAG_RSVD_MEM, parse_tag_rsvd_mem); |
5f97f7f9 HS |
356 | |
357 | static int __init parse_tag_cmdline(struct tag *tag) | |
358 | { | |
bf4352c0 | 359 | strlcpy(boot_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE); |
5f97f7f9 HS |
360 | return 0; |
361 | } | |
362 | __tagtable(ATAG_CMDLINE, parse_tag_cmdline); | |
363 | ||
5f97f7f9 HS |
364 | static int __init parse_tag_clock(struct tag *tag) |
365 | { | |
366 | /* | |
367 | * We'll figure out the clocks by peeking at the system | |
368 | * manager regs directly. | |
369 | */ | |
370 | return 0; | |
371 | } | |
372 | __tagtable(ATAG_CLOCK, parse_tag_clock); | |
373 | ||
5f97f7f9 HS |
374 | /* |
375 | * Scan the tag table for this tag, and call its parse function. The | |
376 | * tag table is built by the linker from all the __tagtable | |
377 | * declarations. | |
378 | */ | |
379 | static int __init parse_tag(struct tag *tag) | |
380 | { | |
381 | extern struct tagtable __tagtable_begin, __tagtable_end; | |
382 | struct tagtable *t; | |
383 | ||
384 | for (t = &__tagtable_begin; t < &__tagtable_end; t++) | |
385 | if (tag->hdr.tag == t->tag) { | |
386 | t->parse(tag); | |
387 | break; | |
388 | } | |
389 | ||
390 | return t < &__tagtable_end; | |
391 | } | |
392 | ||
393 | /* | |
394 | * Parse all tags in the list we got from the boot loader | |
395 | */ | |
396 | static void __init parse_tags(struct tag *t) | |
397 | { | |
398 | for (; t->hdr.tag != ATAG_NONE; t = tag_next(t)) | |
399 | if (!parse_tag(t)) | |
400 | printk(KERN_WARNING | |
401 | "Ignoring unrecognised tag 0x%08x\n", | |
402 | t->hdr.tag); | |
403 | } | |
404 | ||
5539f59a HS |
405 | /* |
406 | * Find a free memory region large enough for storing the | |
407 | * bootmem bitmap. | |
408 | */ | |
409 | static unsigned long __init | |
d8011768 | 410 | find_bootmap_pfn(const struct resource *mem) |
5539f59a HS |
411 | { |
412 | unsigned long bootmap_pages, bootmap_len; | |
d8011768 HS |
413 | unsigned long node_pages = PFN_UP(mem->end - mem->start + 1); |
414 | unsigned long bootmap_start; | |
5539f59a HS |
415 | |
416 | bootmap_pages = bootmem_bootmap_pages(node_pages); | |
417 | bootmap_len = bootmap_pages << PAGE_SHIFT; | |
418 | ||
419 | /* | |
420 | * Find a large enough region without reserved pages for | |
421 | * storing the bootmem bitmap. We can take advantage of the | |
422 | * fact that all lists have been sorted. | |
423 | * | |
d8011768 HS |
424 | * We have to check that we don't collide with any reserved |
425 | * regions, which includes the kernel image and any RAMDISK | |
426 | * images. | |
5539f59a | 427 | */ |
d8011768 | 428 | bootmap_start = find_free_region(mem, bootmap_len, PAGE_SIZE); |
5539f59a | 429 | |
d8011768 | 430 | return bootmap_start >> PAGE_SHIFT; |
5539f59a HS |
431 | } |
432 | ||
d8011768 HS |
433 | #define MAX_LOWMEM HIGHMEM_START |
434 | #define MAX_LOWMEM_PFN PFN_DOWN(MAX_LOWMEM) | |
435 | ||
5539f59a HS |
436 | static void __init setup_bootmem(void) |
437 | { | |
438 | unsigned bootmap_size; | |
439 | unsigned long first_pfn, bootmap_pfn, pages; | |
440 | unsigned long max_pfn, max_low_pfn; | |
5539f59a | 441 | unsigned node = 0; |
d8011768 | 442 | struct resource *res; |
5539f59a | 443 | |
d8011768 HS |
444 | printk(KERN_INFO "Physical memory:\n"); |
445 | for (res = system_ram; res; res = res->sibling) | |
446 | printk(" %08x-%08x\n", res->start, res->end); | |
447 | printk(KERN_INFO "Reserved memory:\n"); | |
448 | for (res = reserved; res; res = res->sibling) | |
449 | printk(" %08x-%08x: %s\n", | |
450 | res->start, res->end, res->name); | |
5539f59a HS |
451 | |
452 | nodes_clear(node_online_map); | |
453 | ||
d8011768 | 454 | if (system_ram->sibling) |
5539f59a HS |
455 | printk(KERN_WARNING "Only using first memory bank\n"); |
456 | ||
d8011768 HS |
457 | for (res = system_ram; res; res = NULL) { |
458 | first_pfn = PFN_UP(res->start); | |
459 | max_low_pfn = max_pfn = PFN_DOWN(res->end + 1); | |
460 | bootmap_pfn = find_bootmap_pfn(res); | |
5539f59a HS |
461 | if (bootmap_pfn > max_pfn) |
462 | panic("No space for bootmem bitmap!\n"); | |
463 | ||
464 | if (max_low_pfn > MAX_LOWMEM_PFN) { | |
465 | max_low_pfn = MAX_LOWMEM_PFN; | |
466 | #ifndef CONFIG_HIGHMEM | |
467 | /* | |
468 | * Lowmem is memory that can be addressed | |
469 | * directly through P1/P2 | |
470 | */ | |
471 | printk(KERN_WARNING | |
472 | "Node %u: Only %ld MiB of memory will be used.\n", | |
473 | node, MAX_LOWMEM >> 20); | |
474 | printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n"); | |
475 | #else | |
476 | #error HIGHMEM is not supported by AVR32 yet | |
477 | #endif | |
478 | } | |
479 | ||
480 | /* Initialize the boot-time allocator with low memory only. */ | |
481 | bootmap_size = init_bootmem_node(NODE_DATA(node), bootmap_pfn, | |
482 | first_pfn, max_low_pfn); | |
483 | ||
5539f59a HS |
484 | /* |
485 | * Register fully available RAM pages with the bootmem | |
486 | * allocator. | |
487 | */ | |
488 | pages = max_low_pfn - first_pfn; | |
489 | free_bootmem_node (NODE_DATA(node), PFN_PHYS(first_pfn), | |
490 | PFN_PHYS(pages)); | |
491 | ||
d8011768 | 492 | /* Reserve space for the bootmem bitmap... */ |
5539f59a HS |
493 | reserve_bootmem_node(NODE_DATA(node), |
494 | PFN_PHYS(bootmap_pfn), | |
72a7fe39 BW |
495 | bootmap_size, |
496 | BOOTMEM_DEFAULT); | |
5539f59a | 497 | |
5539f59a | 498 | /* ...and any other reserved regions. */ |
d8011768 HS |
499 | for (res = reserved; res; res = res->sibling) { |
500 | if (res->start > PFN_PHYS(max_pfn)) | |
5539f59a HS |
501 | break; |
502 | ||
d8011768 HS |
503 | /* |
504 | * resource_init will complain about partial | |
505 | * overlaps, so we'll just ignore such | |
506 | * resources for now. | |
507 | */ | |
508 | if (res->start >= PFN_PHYS(first_pfn) | |
509 | && res->end < PFN_PHYS(max_pfn)) | |
510 | reserve_bootmem_node( | |
511 | NODE_DATA(node), res->start, | |
72a7fe39 BW |
512 | res->end - res->start + 1, |
513 | BOOTMEM_DEFAULT); | |
5539f59a HS |
514 | } |
515 | ||
516 | node_set_online(node); | |
517 | } | |
518 | } | |
519 | ||
5f97f7f9 HS |
520 | void __init setup_arch (char **cmdline_p) |
521 | { | |
522 | struct clk *cpu_clk; | |
523 | ||
d8011768 HS |
524 | init_mm.start_code = (unsigned long)_text; |
525 | init_mm.end_code = (unsigned long)_etext; | |
526 | init_mm.end_data = (unsigned long)_edata; | |
527 | init_mm.brk = (unsigned long)_end; | |
528 | ||
529 | /* | |
530 | * Include .init section to make allocations easier. It will | |
531 | * be removed before the resource is actually requested. | |
532 | */ | |
533 | kernel_code.start = __pa(__init_begin); | |
534 | kernel_code.end = __pa(init_mm.end_code - 1); | |
535 | kernel_data.start = __pa(init_mm.end_code); | |
536 | kernel_data.end = __pa(init_mm.brk - 1); | |
537 | ||
5f97f7f9 HS |
538 | parse_tags(bootloader_tags); |
539 | ||
540 | setup_processor(); | |
541 | setup_platform(); | |
c194588d | 542 | setup_board(); |
5f97f7f9 HS |
543 | |
544 | cpu_clk = clk_get(NULL, "cpu"); | |
545 | if (IS_ERR(cpu_clk)) { | |
546 | printk(KERN_WARNING "Warning: Unable to get CPU clock\n"); | |
547 | } else { | |
548 | unsigned long cpu_hz = clk_get_rate(cpu_clk); | |
549 | ||
550 | /* | |
551 | * Well, duh, but it's probably a good idea to | |
552 | * increment the use count. | |
553 | */ | |
554 | clk_enable(cpu_clk); | |
555 | ||
556 | boot_cpu_data.clk = cpu_clk; | |
557 | boot_cpu_data.loops_per_jiffy = cpu_hz * 4; | |
558 | printk("CPU: Running at %lu.%03lu MHz\n", | |
559 | ((cpu_hz + 500) / 1000) / 1000, | |
560 | ((cpu_hz + 500) / 1000) % 1000); | |
561 | } | |
562 | ||
bf4352c0 | 563 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
5f97f7f9 HS |
564 | *cmdline_p = command_line; |
565 | parse_early_param(); | |
566 | ||
567 | setup_bootmem(); | |
568 | ||
5f97f7f9 HS |
569 | #ifdef CONFIG_VT |
570 | conswitchp = &dummy_con; | |
571 | #endif | |
572 | ||
573 | paging_init(); | |
5f97f7f9 HS |
574 | resource_init(); |
575 | } |