Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mm/init.c | |
3 | * | |
90072059 | 4 | * Copyright (C) 1995-2005 Russell King |
1da177e4 LT |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
1da177e4 LT |
10 | #include <linux/kernel.h> |
11 | #include <linux/errno.h> | |
1da177e4 LT |
12 | #include <linux/swap.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/bootmem.h> | |
15 | #include <linux/mman.h> | |
16 | #include <linux/nodemask.h> | |
17 | #include <linux/initrd.h> | |
3835f6cb | 18 | #include <linux/highmem.h> |
5a0e3ad6 | 19 | #include <linux/gfp.h> |
2778f620 | 20 | #include <linux/memblock.h> |
1da177e4 LT |
21 | |
22 | #include <asm/mach-types.h> | |
37efe642 | 23 | #include <asm/sections.h> |
1da177e4 | 24 | #include <asm/setup.h> |
74d02fb9 | 25 | #include <asm/sizes.h> |
1da177e4 | 26 | #include <asm/tlb.h> |
db9ef1af | 27 | #include <asm/fixmap.h> |
1da177e4 LT |
28 | |
29 | #include <asm/mach/arch.h> | |
30 | #include <asm/mach/map.h> | |
31 | ||
1b2e2b73 RK |
32 | #include "mm.h" |
33 | ||
012d1f4a RK |
34 | static unsigned long phys_initrd_start __initdata = 0; |
35 | static unsigned long phys_initrd_size __initdata = 0; | |
36 | ||
2b0d8c25 | 37 | static int __init early_initrd(char *p) |
012d1f4a RK |
38 | { |
39 | unsigned long start, size; | |
2b0d8c25 | 40 | char *endp; |
012d1f4a | 41 | |
2b0d8c25 JK |
42 | start = memparse(p, &endp); |
43 | if (*endp == ',') { | |
44 | size = memparse(endp + 1, NULL); | |
012d1f4a RK |
45 | |
46 | phys_initrd_start = start; | |
47 | phys_initrd_size = size; | |
48 | } | |
2b0d8c25 | 49 | return 0; |
012d1f4a | 50 | } |
2b0d8c25 | 51 | early_param("initrd", early_initrd); |
012d1f4a RK |
52 | |
53 | static int __init parse_tag_initrd(const struct tag *tag) | |
54 | { | |
55 | printk(KERN_WARNING "ATAG_INITRD is deprecated; " | |
56 | "please update your bootloader.\n"); | |
57 | phys_initrd_start = __virt_to_phys(tag->u.initrd.start); | |
58 | phys_initrd_size = tag->u.initrd.size; | |
59 | return 0; | |
60 | } | |
61 | ||
62 | __tagtable(ATAG_INITRD, parse_tag_initrd); | |
63 | ||
64 | static int __init parse_tag_initrd2(const struct tag *tag) | |
65 | { | |
66 | phys_initrd_start = tag->u.initrd.start; | |
67 | phys_initrd_size = tag->u.initrd.size; | |
68 | return 0; | |
69 | } | |
70 | ||
71 | __tagtable(ATAG_INITRD2, parse_tag_initrd2); | |
1da177e4 LT |
72 | |
73 | /* | |
4b5f32ce NP |
74 | * This keeps memory configuration data used by a couple memory |
75 | * initialization functions, as well as show_mem() for the skipping | |
76 | * of holes in the memory map. It is populated by arm_add_memory(). | |
1da177e4 | 77 | */ |
4b5f32ce | 78 | struct meminfo meminfo; |
5e709827 | 79 | |
1da177e4 LT |
80 | void show_mem(void) |
81 | { | |
82 | int free = 0, total = 0, reserved = 0; | |
be370302 | 83 | int shared = 0, cached = 0, slab = 0, i; |
5e709827 | 84 | struct meminfo * mi = &meminfo; |
1da177e4 LT |
85 | |
86 | printk("Mem-info:\n"); | |
87 | show_free_areas(); | |
be370302 RK |
88 | |
89 | for_each_bank (i, mi) { | |
90 | struct membank *bank = &mi->bank[i]; | |
91 | unsigned int pfn1, pfn2; | |
92 | struct page *page, *end; | |
93 | ||
94 | pfn1 = bank_pfn_start(bank); | |
95 | pfn2 = bank_pfn_end(bank); | |
96 | ||
97 | page = pfn_to_page(pfn1); | |
98 | end = pfn_to_page(pfn2 - 1) + 1; | |
99 | ||
100 | do { | |
101 | total++; | |
102 | if (PageReserved(page)) | |
103 | reserved++; | |
104 | else if (PageSwapCache(page)) | |
105 | cached++; | |
106 | else if (PageSlab(page)) | |
107 | slab++; | |
108 | else if (!page_count(page)) | |
109 | free++; | |
110 | else | |
111 | shared += page_count(page) - 1; | |
112 | page++; | |
113 | } while (page < end); | |
1da177e4 LT |
114 | } |
115 | ||
116 | printk("%d pages of RAM\n", total); | |
117 | printk("%d free pages\n", free); | |
118 | printk("%d reserved pages\n", reserved); | |
119 | printk("%d slab pages\n", slab); | |
120 | printk("%d pages shared\n", shared); | |
121 | printk("%d pages swap cached\n", cached); | |
122 | } | |
123 | ||
be370302 | 124 | static void __init find_limits(struct meminfo *mi, |
dde5828f RK |
125 | unsigned long *min, unsigned long *max_low, unsigned long *max_high) |
126 | { | |
127 | int i; | |
128 | ||
129 | *min = -1UL; | |
130 | *max_low = *max_high = 0; | |
131 | ||
be370302 | 132 | for_each_bank (i, mi) { |
dde5828f RK |
133 | struct membank *bank = &mi->bank[i]; |
134 | unsigned long start, end; | |
135 | ||
136 | start = bank_pfn_start(bank); | |
137 | end = bank_pfn_end(bank); | |
138 | ||
139 | if (*min > start) | |
140 | *min = start; | |
141 | if (*max_high < end) | |
142 | *max_high = end; | |
143 | if (bank->highmem) | |
144 | continue; | |
145 | if (*max_low < end) | |
146 | *max_low = end; | |
147 | } | |
148 | } | |
149 | ||
be370302 | 150 | static void __init arm_bootmem_init(struct meminfo *mi, |
dde5828f | 151 | unsigned long start_pfn, unsigned long end_pfn) |
1da177e4 | 152 | { |
90072059 | 153 | unsigned int boot_pages; |
2778f620 | 154 | phys_addr_t bitmap; |
90072059 RK |
155 | pg_data_t *pgdat; |
156 | int i; | |
1da177e4 | 157 | |
90072059 | 158 | /* |
2778f620 RK |
159 | * Allocate the bootmem bitmap page. This must be in a region |
160 | * of memory which has already been mapped. | |
90072059 RK |
161 | */ |
162 | boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn); | |
2778f620 RK |
163 | bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES, |
164 | __pfn_to_phys(end_pfn)); | |
1da177e4 | 165 | |
90072059 | 166 | /* |
be370302 | 167 | * Initialise the bootmem allocator, handing the |
90072059 RK |
168 | * memory banks over to bootmem. |
169 | */ | |
be370302 RK |
170 | node_set_online(0); |
171 | pgdat = NODE_DATA(0); | |
2778f620 | 172 | init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn); |
1da177e4 | 173 | |
be370302 | 174 | for_each_bank(i, mi) { |
d2a38ef9 | 175 | struct membank *bank = &mi->bank[i]; |
dde5828f | 176 | if (!bank->highmem) |
be370302 | 177 | free_bootmem(bank_phys_start(bank), bank_phys_size(bank)); |
d2a38ef9 | 178 | } |
90072059 RK |
179 | |
180 | /* | |
2778f620 | 181 | * Reserve the memblock reserved regions in bootmem. |
90072059 | 182 | */ |
2778f620 RK |
183 | for (i = 0; i < memblock.reserved.cnt; i++) { |
184 | phys_addr_t start = memblock_start_pfn(&memblock.reserved, i); | |
185 | if (start >= start_pfn && | |
186 | memblock_end_pfn(&memblock.reserved, i) <= end_pfn) | |
187 | reserve_bootmem_node(pgdat, __pfn_to_phys(start), | |
188 | memblock_size_bytes(&memblock.reserved, i), | |
189 | BOOTMEM_DEFAULT); | |
1da177e4 | 190 | } |
b7a69ac3 RK |
191 | } |
192 | ||
a9deb137 RK |
193 | static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min, |
194 | unsigned long max_low, unsigned long max_high) | |
b7a69ac3 RK |
195 | { |
196 | unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; | |
b7a69ac3 RK |
197 | int i; |
198 | ||
90072059 | 199 | /* |
be370302 | 200 | * initialise the zones. |
90072059 RK |
201 | */ |
202 | memset(zone_size, 0, sizeof(zone_size)); | |
90072059 RK |
203 | |
204 | /* | |
be370302 RK |
205 | * The memory size has already been determined. If we need |
206 | * to do anything fancy with the allocation of this memory | |
207 | * to the zones, now is the time to do it. | |
90072059 | 208 | */ |
dde5828f RK |
209 | zone_size[0] = max_low - min; |
210 | #ifdef CONFIG_HIGHMEM | |
211 | zone_size[ZONE_HIGHMEM] = max_high - max_low; | |
212 | #endif | |
90072059 RK |
213 | |
214 | /* | |
be370302 RK |
215 | * Calculate the size of the holes. |
216 | * holes = node_size - sum(bank_sizes) | |
90072059 | 217 | */ |
dde5828f | 218 | memcpy(zhole_size, zone_size, sizeof(zhole_size)); |
be370302 | 219 | for_each_bank(i, mi) { |
dde5828f RK |
220 | int idx = 0; |
221 | #ifdef CONFIG_HIGHMEM | |
222 | if (mi->bank[i].highmem) | |
223 | idx = ZONE_HIGHMEM; | |
224 | #endif | |
225 | zhole_size[idx] -= bank_pfn_size(&mi->bank[i]); | |
226 | } | |
90072059 RK |
227 | |
228 | /* | |
229 | * Adjust the sizes according to any special requirements for | |
230 | * this machine type. | |
231 | */ | |
b65b4781 | 232 | arch_adjust_zones(zone_size, zhole_size); |
90072059 | 233 | |
be370302 | 234 | free_area_init_node(0, zone_size, min, zhole_size); |
1da177e4 LT |
235 | } |
236 | ||
b7cfda9f RK |
237 | #ifndef CONFIG_SPARSEMEM |
238 | int pfn_valid(unsigned long pfn) | |
239 | { | |
e07b9e08 RK |
240 | struct memblock_region *mem = &memblock.memory; |
241 | unsigned int left = 0, right = mem->cnt; | |
b7cfda9f RK |
242 | |
243 | do { | |
244 | unsigned int mid = (right + left) / 2; | |
b7cfda9f | 245 | |
e07b9e08 | 246 | if (pfn < memblock_start_pfn(mem, mid)) |
b7cfda9f | 247 | right = mid; |
e07b9e08 | 248 | else if (pfn >= memblock_end_pfn(mem, mid)) |
b7cfda9f RK |
249 | left = mid + 1; |
250 | else | |
251 | return 1; | |
252 | } while (left < right); | |
253 | return 0; | |
254 | } | |
255 | EXPORT_SYMBOL(pfn_valid); | |
657e12fd | 256 | |
eda2e5dc | 257 | static void arm_memory_present(void) |
657e12fd RK |
258 | { |
259 | } | |
260 | #else | |
eda2e5dc | 261 | static void arm_memory_present(void) |
657e12fd RK |
262 | { |
263 | int i; | |
eda2e5dc RK |
264 | for (i = 0; i < memblock.memory.cnt; i++) |
265 | memory_present(0, memblock_start_pfn(&memblock.memory, i), | |
266 | memblock_end_pfn(&memblock.memory, i)); | |
657e12fd | 267 | } |
b7cfda9f RK |
268 | #endif |
269 | ||
8d717a52 | 270 | void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc) |
2778f620 RK |
271 | { |
272 | int i; | |
273 | ||
274 | memblock_init(); | |
275 | for (i = 0; i < mi->nr_banks; i++) | |
276 | memblock_add(mi->bank[i].start, mi->bank[i].size); | |
277 | ||
278 | /* Register the kernel text, kernel data and initrd with memblock. */ | |
279 | #ifdef CONFIG_XIP_KERNEL | |
280 | memblock_reserve(__pa(_data), _end - _data); | |
281 | #else | |
282 | memblock_reserve(__pa(_stext), _end - _stext); | |
283 | #endif | |
284 | #ifdef CONFIG_BLK_DEV_INITRD | |
285 | if (phys_initrd_size) { | |
286 | memblock_reserve(phys_initrd_start, phys_initrd_size); | |
287 | ||
288 | /* Now convert initrd to virtual addresses */ | |
289 | initrd_start = __phys_to_virt(phys_initrd_start); | |
290 | initrd_end = initrd_start + phys_initrd_size; | |
291 | } | |
292 | #endif | |
293 | ||
294 | arm_mm_memblock_reserve(); | |
295 | ||
8d717a52 RK |
296 | /* reserve any platform specific memblock areas */ |
297 | if (mdesc->reserve) | |
298 | mdesc->reserve(); | |
299 | ||
2778f620 RK |
300 | memblock_analyze(); |
301 | memblock_dump_all(); | |
302 | } | |
303 | ||
8d717a52 | 304 | void __init bootmem_init(void) |
1da177e4 | 305 | { |
4b5f32ce | 306 | struct meminfo *mi = &meminfo; |
dde5828f | 307 | unsigned long min, max_low, max_high; |
1da177e4 | 308 | |
dde5828f RK |
309 | max_low = max_high = 0; |
310 | ||
be370302 | 311 | find_limits(mi, &min, &max_low, &max_high); |
dde5828f | 312 | |
be370302 | 313 | arm_bootmem_init(mi, min, max_low); |
dde5828f | 314 | |
be370302 RK |
315 | /* |
316 | * Sparsemem tries to allocate bootmem in memory_present(), | |
317 | * so must be done after the fixed reservations | |
318 | */ | |
eda2e5dc | 319 | arm_memory_present(); |
1da177e4 | 320 | |
b7a69ac3 RK |
321 | /* |
322 | * sparse_init() needs the bootmem allocator up and running. | |
323 | */ | |
324 | sparse_init(); | |
325 | ||
326 | /* | |
be370302 | 327 | * Now free the memory - free_area_init_node needs |
b7a69ac3 RK |
328 | * the sparse mem_map arrays initialized by sparse_init() |
329 | * for memmap_init_zone(), otherwise all PFNs are invalid. | |
330 | */ | |
a9deb137 | 331 | arm_bootmem_free(mi, min, max_low, max_high); |
b7a69ac3 | 332 | |
dde5828f | 333 | high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1; |
1da177e4 | 334 | |
90072059 RK |
335 | /* |
336 | * This doesn't seem to be used by the Linux memory manager any | |
337 | * more, but is used by ll_rw_block. If we can get rid of it, we | |
338 | * also get rid of some of the stuff above as well. | |
339 | * | |
340 | * Note: max_low_pfn and max_pfn reflect the number of _pages_ in | |
341 | * the system, not the maximum PFN. | |
342 | */ | |
dde5828f RK |
343 | max_low_pfn = max_low - PHYS_PFN_OFFSET; |
344 | max_pfn = max_high - PHYS_PFN_OFFSET; | |
90072059 | 345 | } |
1da177e4 | 346 | |
6db015e4 | 347 | static inline int free_area(unsigned long pfn, unsigned long end, char *s) |
1da177e4 | 348 | { |
6db015e4 | 349 | unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10); |
1da177e4 | 350 | |
6db015e4 NP |
351 | for (; pfn < end; pfn++) { |
352 | struct page *page = pfn_to_page(pfn); | |
1da177e4 | 353 | ClearPageReserved(page); |
7835e98b | 354 | init_page_count(page); |
6db015e4 NP |
355 | __free_page(page); |
356 | pages++; | |
1da177e4 LT |
357 | } |
358 | ||
359 | if (size && s) | |
360 | printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); | |
6db015e4 NP |
361 | |
362 | return pages; | |
1da177e4 LT |
363 | } |
364 | ||
a013053d | 365 | static inline void |
be370302 | 366 | free_memmap(unsigned long start_pfn, unsigned long end_pfn) |
a013053d RK |
367 | { |
368 | struct page *start_pg, *end_pg; | |
369 | unsigned long pg, pgend; | |
370 | ||
371 | /* | |
372 | * Convert start_pfn/end_pfn to a struct page pointer. | |
373 | */ | |
3257f43d | 374 | start_pg = pfn_to_page(start_pfn - 1) + 1; |
a013053d RK |
375 | end_pg = pfn_to_page(end_pfn); |
376 | ||
377 | /* | |
378 | * Convert to physical addresses, and | |
379 | * round start upwards and end downwards. | |
380 | */ | |
381 | pg = PAGE_ALIGN(__pa(start_pg)); | |
382 | pgend = __pa(end_pg) & PAGE_MASK; | |
383 | ||
384 | /* | |
385 | * If there are free pages between these, | |
386 | * free the section of the memmap array. | |
387 | */ | |
388 | if (pg < pgend) | |
be370302 | 389 | free_bootmem(pg, pgend - pg); |
a013053d RK |
390 | } |
391 | ||
392 | /* | |
393 | * The mem_map array can get very big. Free the unused area of the memory map. | |
394 | */ | |
be370302 | 395 | static void __init free_unused_memmap(struct meminfo *mi) |
a013053d RK |
396 | { |
397 | unsigned long bank_start, prev_bank_end = 0; | |
398 | unsigned int i; | |
399 | ||
400 | /* | |
3260e529 MB |
401 | * This relies on each bank being in address order. |
402 | * The banks are sorted previously in bootmem_init(). | |
a013053d | 403 | */ |
be370302 | 404 | for_each_bank(i, mi) { |
d2a38ef9 RK |
405 | struct membank *bank = &mi->bank[i]; |
406 | ||
407 | bank_start = bank_pfn_start(bank); | |
a013053d RK |
408 | |
409 | /* | |
410 | * If we had a previous bank, and there is a space | |
411 | * between the current bank and the previous, free it. | |
412 | */ | |
3260e529 | 413 | if (prev_bank_end && prev_bank_end < bank_start) |
be370302 | 414 | free_memmap(prev_bank_end, bank_start); |
a013053d | 415 | |
3260e529 MB |
416 | /* |
417 | * Align up here since the VM subsystem insists that the | |
418 | * memmap entries are valid from the bank end aligned to | |
419 | * MAX_ORDER_NR_PAGES. | |
420 | */ | |
421 | prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES); | |
a013053d RK |
422 | } |
423 | } | |
424 | ||
1da177e4 LT |
425 | /* |
426 | * mem_init() marks the free areas in the mem_map and tells us how much | |
427 | * memory is free. This is done after various parts of the system have | |
428 | * claimed their memory after the kernel image. | |
429 | */ | |
430 | void __init mem_init(void) | |
431 | { | |
db9ef1af | 432 | unsigned long reserved_pages, free_pages; |
be370302 | 433 | int i; |
1dbd30e9 LW |
434 | #ifdef CONFIG_HAVE_TCM |
435 | /* These pointers are filled in on TCM detection */ | |
436 | extern u32 dtcm_end; | |
437 | extern u32 itcm_end; | |
438 | #endif | |
1da177e4 | 439 | |
3835f6cb | 440 | max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map; |
1da177e4 | 441 | |
1da177e4 | 442 | /* this will put all unused low memory onto the freelists */ |
be370302 | 443 | free_unused_memmap(&meminfo); |
a013053d | 444 | |
be370302 | 445 | totalram_pages += free_all_bootmem(); |
1da177e4 LT |
446 | |
447 | #ifdef CONFIG_SA1111 | |
448 | /* now that our DMA memory is actually so designated, we can free it */ | |
6db015e4 NP |
449 | totalram_pages += free_area(PHYS_PFN_OFFSET, |
450 | __phys_to_pfn(__pa(swapper_pg_dir)), NULL); | |
1da177e4 LT |
451 | #endif |
452 | ||
3835f6cb NP |
453 | #ifdef CONFIG_HIGHMEM |
454 | /* set highmem page free */ | |
be370302 RK |
455 | for_each_bank (i, &meminfo) { |
456 | unsigned long start = bank_pfn_start(&meminfo.bank[i]); | |
457 | unsigned long end = bank_pfn_end(&meminfo.bank[i]); | |
458 | if (start >= max_low_pfn + PHYS_PFN_OFFSET) | |
459 | totalhigh_pages += free_area(start, end, NULL); | |
3835f6cb NP |
460 | } |
461 | totalram_pages += totalhigh_pages; | |
462 | #endif | |
463 | ||
db9ef1af FB |
464 | reserved_pages = free_pages = 0; |
465 | ||
be370302 RK |
466 | for_each_bank(i, &meminfo) { |
467 | struct membank *bank = &meminfo.bank[i]; | |
468 | unsigned int pfn1, pfn2; | |
469 | struct page *page, *end; | |
470 | ||
471 | pfn1 = bank_pfn_start(bank); | |
472 | pfn2 = bank_pfn_end(bank); | |
473 | ||
474 | page = pfn_to_page(pfn1); | |
475 | end = pfn_to_page(pfn2 - 1) + 1; | |
476 | ||
477 | do { | |
478 | if (PageReserved(page)) | |
479 | reserved_pages++; | |
480 | else if (!page_count(page)) | |
481 | free_pages++; | |
482 | page++; | |
483 | } while (page < end); | |
db9ef1af FB |
484 | } |
485 | ||
1da177e4 LT |
486 | /* |
487 | * Since our memory may not be contiguous, calculate the | |
488 | * real number of pages we have in this system | |
489 | */ | |
490 | printk(KERN_INFO "Memory:"); | |
1da177e4 LT |
491 | num_physpages = 0; |
492 | for (i = 0; i < meminfo.nr_banks; i++) { | |
d2a38ef9 RK |
493 | num_physpages += bank_pfn_size(&meminfo.bank[i]); |
494 | printk(" %ldMB", bank_phys_size(&meminfo.bank[i]) >> 20); | |
1da177e4 | 495 | } |
1da177e4 | 496 | printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT)); |
6db015e4 | 497 | |
db9ef1af FB |
498 | printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n", |
499 | nr_free_pages() << (PAGE_SHIFT-10), | |
500 | free_pages << (PAGE_SHIFT-10), | |
501 | reserved_pages << (PAGE_SHIFT-10), | |
4b529401 | 502 | totalhigh_pages << (PAGE_SHIFT-10)); |
1da177e4 | 503 | |
db9ef1af FB |
504 | #define MLK(b, t) b, t, ((t) - (b)) >> 10 |
505 | #define MLM(b, t) b, t, ((t) - (b)) >> 20 | |
506 | #define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K) | |
507 | ||
508 | printk(KERN_NOTICE "Virtual kernel memory layout:\n" | |
509 | " vector : 0x%08lx - 0x%08lx (%4ld kB)\n" | |
07d2a5c7 | 510 | #ifdef CONFIG_HAVE_TCM |
07d2a5c7 | 511 | " DTCM : 0x%08lx - 0x%08lx (%4ld kB)\n" |
07d2a5c7 | 512 | " ITCM : 0x%08lx - 0x%08lx (%4ld kB)\n" |
07d2a5c7 | 513 | #endif |
db9ef1af | 514 | " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" |
a7bd08c8 FB |
515 | #ifdef CONFIG_MMU |
516 | " DMA : 0x%08lx - 0x%08lx (%4ld MB)\n" | |
517 | #endif | |
db9ef1af FB |
518 | " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" |
519 | " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n" | |
520 | #ifdef CONFIG_HIGHMEM | |
521 | " pkmap : 0x%08lx - 0x%08lx (%4ld MB)\n" | |
522 | #endif | |
523 | " modules : 0x%08lx - 0x%08lx (%4ld MB)\n" | |
524 | " .init : 0x%p" " - 0x%p" " (%4d kB)\n" | |
525 | " .text : 0x%p" " - 0x%p" " (%4d kB)\n" | |
526 | " .data : 0x%p" " - 0x%p" " (%4d kB)\n", | |
527 | ||
528 | MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) + | |
529 | (PAGE_SIZE)), | |
07d2a5c7 | 530 | #ifdef CONFIG_HAVE_TCM |
1dbd30e9 LW |
531 | MLK(DTCM_OFFSET, (unsigned long) dtcm_end), |
532 | MLK(ITCM_OFFSET, (unsigned long) itcm_end), | |
07d2a5c7 | 533 | #endif |
db9ef1af | 534 | MLK(FIXADDR_START, FIXADDR_TOP), |
a7bd08c8 FB |
535 | #ifdef CONFIG_MMU |
536 | MLM(CONSISTENT_BASE, CONSISTENT_END), | |
537 | #endif | |
c931b4f6 | 538 | MLM(VMALLOC_START, VMALLOC_END), |
db9ef1af FB |
539 | MLM(PAGE_OFFSET, (unsigned long)high_memory), |
540 | #ifdef CONFIG_HIGHMEM | |
541 | MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) * | |
542 | (PAGE_SIZE)), | |
543 | #endif | |
544 | MLM(MODULES_VADDR, MODULES_END), | |
545 | ||
546 | MLK_ROUNDUP(__init_begin, __init_end), | |
547 | MLK_ROUNDUP(_text, _etext), | |
548 | MLK_ROUNDUP(_data, _edata)); | |
549 | ||
550 | #undef MLK | |
551 | #undef MLM | |
552 | #undef MLK_ROUNDUP | |
553 | ||
a1839272 FB |
554 | /* |
555 | * Check boundaries twice: Some fundamental inconsistencies can | |
556 | * be detected at build time already. | |
557 | */ | |
558 | #ifdef CONFIG_MMU | |
559 | BUILD_BUG_ON(VMALLOC_END > CONSISTENT_BASE); | |
560 | BUG_ON(VMALLOC_END > CONSISTENT_BASE); | |
561 | ||
562 | BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR); | |
563 | BUG_ON(TASK_SIZE > MODULES_VADDR); | |
564 | #endif | |
565 | ||
566 | #ifdef CONFIG_HIGHMEM | |
567 | BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); | |
568 | BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); | |
569 | #endif | |
570 | ||
1da177e4 LT |
571 | if (PAGE_SIZE >= 16384 && num_physpages <= 128) { |
572 | extern int sysctl_overcommit_memory; | |
573 | /* | |
574 | * On a machine this small we won't get | |
575 | * anywhere without overcommit, so turn | |
576 | * it on by default. | |
577 | */ | |
578 | sysctl_overcommit_memory = OVERCOMMIT_ALWAYS; | |
579 | } | |
580 | } | |
581 | ||
582 | void free_initmem(void) | |
583 | { | |
bc581770 | 584 | #ifdef CONFIG_HAVE_TCM |
ea208f64 | 585 | extern char __tcm_start, __tcm_end; |
bc581770 | 586 | |
ea208f64 LW |
587 | totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)), |
588 | __phys_to_pfn(__pa(&__tcm_end)), | |
bc581770 LW |
589 | "TCM link"); |
590 | #endif | |
591 | ||
6db015e4 | 592 | if (!machine_is_integrator() && !machine_is_cintegrator()) |
37efe642 RK |
593 | totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)), |
594 | __phys_to_pfn(__pa(__init_end)), | |
6db015e4 | 595 | "init"); |
1da177e4 LT |
596 | } |
597 | ||
598 | #ifdef CONFIG_BLK_DEV_INITRD | |
599 | ||
600 | static int keep_initrd; | |
601 | ||
602 | void free_initrd_mem(unsigned long start, unsigned long end) | |
603 | { | |
604 | if (!keep_initrd) | |
6db015e4 NP |
605 | totalram_pages += free_area(__phys_to_pfn(__pa(start)), |
606 | __phys_to_pfn(__pa(end)), | |
607 | "initrd"); | |
1da177e4 LT |
608 | } |
609 | ||
610 | static int __init keepinitrd_setup(char *__unused) | |
611 | { | |
612 | keep_initrd = 1; | |
613 | return 1; | |
614 | } | |
615 | ||
616 | __setup("keepinitrd", keepinitrd_setup); | |
617 | #endif |