blob: 2790b6a64157f79663fe5232afe9f857e6d81cb7 [file] [log] [blame]
Paul Mundt01066622007-03-28 16:38:13 +09001/*
2 * linux/arch/sh/mm/init.c
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * Copyright (C) 1999 Niibe Yutaka
Paul Mundt2f599862011-01-07 15:19:56 +09005 * Copyright (C) 2002 - 2011 Paul Mundt
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 *
7 * Based on linux/arch/i386/mm/init.c:
8 * Copyright (C) 1995 Linus Torvalds
9 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/mm.h>
11#include <linux/swap.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090013#include <linux/gfp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/bootmem.h>
Paul Mundt2cb7ce32006-09-27 18:20:58 +090015#include <linux/proc_fs.h>
Paul Mundt27641de2007-05-14 10:48:01 +090016#include <linux/pagemap.h>
Paul Mundt01066622007-03-28 16:38:13 +090017#include <linux/percpu.h>
18#include <linux/io.h>
Yinghai Lu95f72d12010-07-12 14:36:09 +100019#include <linux/memblock.h>
Paul Mundt94c28512009-10-27 17:07:45 +090020#include <linux/dma-mapping.h>
Paul Gortmakerf7be3452011-07-31 19:20:02 -040021#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/mmu_context.h>
Paul Mundt4bc277a2010-05-11 13:32:19 +090023#include <asm/mmzone.h>
Paul Mundtc77b29d2010-05-18 14:53:23 +090024#include <asm/kexec.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <asm/tlb.h>
26#include <asm/cacheflush.h>
Paul Mundt07cbb412007-06-06 12:23:06 +090027#include <asm/sections.h>
Paul Mundt4bc277a2010-05-11 13:32:19 +090028#include <asm/setup.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <asm/cache.h>
Paul Mundtb0f3ae02010-02-12 15:40:00 +090030#include <asm/sizes.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
Linus Torvalds1da177e2005-04-16 15:20:36 -070032pgd_t swapper_pg_dir[PTRS_PER_PGD];
Stuart Menefyc6feb612008-09-05 16:06:42 +090033
Paul Mundt19d8f842010-05-10 15:39:05 +090034void __init generic_mem_init(void)
35{
Yinghai Lu95f72d12010-07-12 14:36:09 +100036 memblock_add(__MEMORY_START, __MEMORY_SIZE);
Paul Mundt19d8f842010-05-10 15:39:05 +090037}
38
Paul Mundt4bc277a2010-05-11 13:32:19 +090039void __init __weak plat_mem_setup(void)
40{
41 /* Nothing to see here, move along. */
42}
43
Yoshinori Sato11cbb702006-12-07 18:07:27 +090044#ifdef CONFIG_MMU
Matt Fleming07cad4d2009-11-17 22:03:41 +000045static pte_t *__get_pte_phys(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046{
47 pgd_t *pgd;
Paul Mundt26ff6c12006-09-27 15:13:36 +090048 pud_t *pud;
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 pmd_t *pmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
Stuart Menefy99a596f2006-11-21 15:38:05 +090051 pgd = pgd_offset_k(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 if (pgd_none(*pgd)) {
53 pgd_ERROR(*pgd);
Matt Fleming07cad4d2009-11-17 22:03:41 +000054 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 }
56
Stuart Menefy99a596f2006-11-21 15:38:05 +090057 pud = pud_alloc(NULL, pgd, addr);
58 if (unlikely(!pud)) {
59 pud_ERROR(*pud);
Matt Fleming07cad4d2009-11-17 22:03:41 +000060 return NULL;
Paul Mundt26ff6c12006-09-27 15:13:36 +090061 }
62
Stuart Menefy99a596f2006-11-21 15:38:05 +090063 pmd = pmd_alloc(NULL, pud, addr);
64 if (unlikely(!pmd)) {
65 pmd_ERROR(*pmd);
Matt Fleming07cad4d2009-11-17 22:03:41 +000066 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 }
68
Paul Mundt598ee692010-06-21 16:26:27 +090069 return pte_offset_kernel(pmd, addr);
Matt Fleming07cad4d2009-11-17 22:03:41 +000070}
71
72static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
73{
74 pte_t *pte;
75
76 pte = __get_pte_phys(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 if (!pte_none(*pte)) {
78 pte_ERROR(*pte);
79 return;
80 }
81
82 set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
Paul Mundt997d0032009-06-19 15:37:11 +090083 local_flush_tlb_one(get_asid(), addr);
Matt Fleming07cad4d2009-11-17 22:03:41 +000084
85 if (pgprot_val(prot) & _PAGE_WIRED)
86 tlb_wire_entry(NULL, addr, *pte);
87}
88
89static void clear_pte_phys(unsigned long addr, pgprot_t prot)
90{
91 pte_t *pte;
92
93 pte = __get_pte_phys(addr);
94
95 if (pgprot_val(prot) & _PAGE_WIRED)
96 tlb_unwire_entry();
97
98 set_pte(pte, pfn_pte(0, __pgprot(0)));
99 local_flush_tlb_one(get_asid(), addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100}
101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
103{
104 unsigned long address = __fix_to_virt(idx);
105
106 if (idx >= __end_of_fixed_addresses) {
107 BUG();
108 return;
109 }
110
111 set_pte_phys(address, phys, prot);
112}
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900113
Matt Fleming07cad4d2009-11-17 22:03:41 +0000114void __clear_fixmap(enum fixed_addresses idx, pgprot_t prot)
115{
116 unsigned long address = __fix_to_virt(idx);
117
118 if (idx >= __end_of_fixed_addresses) {
119 BUG();
120 return;
121 }
122
123 clear_pte_phys(address, prot);
124}
125
Paul Mundt598ee692010-06-21 16:26:27 +0900126static pmd_t * __init one_md_table_init(pud_t *pud)
127{
128 if (pud_none(*pud)) {
129 pmd_t *pmd;
130
131 pmd = alloc_bootmem_pages(PAGE_SIZE);
132 pud_populate(&init_mm, pud, pmd);
133 BUG_ON(pmd != pmd_offset(pud, 0));
134 }
135
136 return pmd_offset(pud, 0);
137}
138
139static pte_t * __init one_page_table_init(pmd_t *pmd)
140{
141 if (pmd_none(*pmd)) {
142 pte_t *pte;
143
144 pte = alloc_bootmem_pages(PAGE_SIZE);
145 pmd_populate_kernel(&init_mm, pmd, pte);
146 BUG_ON(pte != pte_offset_kernel(pmd, 0));
147 }
148
149 return pte_offset_kernel(pmd, 0);
150}
151
152static pte_t * __init page_table_kmap_check(pte_t *pte, pmd_t *pmd,
153 unsigned long vaddr, pte_t *lastpte)
154{
155 return pte;
156}
157
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900158void __init page_table_range_init(unsigned long start, unsigned long end,
159 pgd_t *pgd_base)
160{
161 pgd_t *pgd;
162 pud_t *pud;
163 pmd_t *pmd;
Paul Mundt598ee692010-06-21 16:26:27 +0900164 pte_t *pte = NULL;
Paul Mundt0906a3a2009-09-03 17:21:10 +0900165 int i, j, k;
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900166 unsigned long vaddr;
167
Paul Mundt0906a3a2009-09-03 17:21:10 +0900168 vaddr = start;
169 i = __pgd_offset(vaddr);
170 j = __pud_offset(vaddr);
171 k = __pmd_offset(vaddr);
172 pgd = pgd_base + i;
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900173
Paul Mundt0906a3a2009-09-03 17:21:10 +0900174 for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
175 pud = (pud_t *)pgd;
176 for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
Paul Mundt598ee692010-06-21 16:26:27 +0900177 pmd = one_md_table_init(pud);
178#ifndef __PAGETABLE_PMD_FOLDED
Matt Fleming5d9b4b12009-12-13 14:38:50 +0000179 pmd += k;
180#endif
Paul Mundt0906a3a2009-09-03 17:21:10 +0900181 for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
Paul Mundt598ee692010-06-21 16:26:27 +0900182 pte = page_table_kmap_check(one_page_table_init(pmd),
183 pmd, vaddr, pte);
Paul Mundt0906a3a2009-09-03 17:21:10 +0900184 vaddr += PMD_SIZE;
185 }
186 k = 0;
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900187 }
Paul Mundt0906a3a2009-09-03 17:21:10 +0900188 j = 0;
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900189 }
190}
Yoshinori Sato11cbb702006-12-07 18:07:27 +0900191#endif /* CONFIG_MMU */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Paul Mundt4bc277a2010-05-11 13:32:19 +0900193void __init allocate_pgdat(unsigned int nid)
194{
195 unsigned long start_pfn, end_pfn;
196#ifdef CONFIG_NEED_MULTIPLE_NODES
197 unsigned long phys;
198#endif
199
200 get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
201
202#ifdef CONFIG_NEED_MULTIPLE_NODES
Yinghai Lu95f72d12010-07-12 14:36:09 +1000203 phys = __memblock_alloc_base(sizeof(struct pglist_data),
Paul Mundt4bc277a2010-05-11 13:32:19 +0900204 SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
205 /* Retry with all of system memory */
206 if (!phys)
Yinghai Lu95f72d12010-07-12 14:36:09 +1000207 phys = __memblock_alloc_base(sizeof(struct pglist_data),
208 SMP_CACHE_BYTES, memblock_end_of_DRAM());
Paul Mundt4bc277a2010-05-11 13:32:19 +0900209 if (!phys)
210 panic("Can't allocate pgdat for node %d\n", nid);
211
212 NODE_DATA(nid) = __va(phys);
213 memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
214
215 NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
216#endif
217
218 NODE_DATA(nid)->node_start_pfn = start_pfn;
219 NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
220}
221
222static void __init bootmem_init_one_node(unsigned int nid)
223{
224 unsigned long total_pages, paddr;
225 unsigned long end_pfn;
226 struct pglist_data *p;
Paul Mundt4bc277a2010-05-11 13:32:19 +0900227
228 p = NODE_DATA(nid);
229
230 /* Nothing to do.. */
231 if (!p->node_spanned_pages)
232 return;
233
Xishi Qiu64080682013-11-12 15:07:17 -0800234 end_pfn = pgdat_end_pfn(p);
Paul Mundt4bc277a2010-05-11 13:32:19 +0900235
236 total_pages = bootmem_bootmap_pages(p->node_spanned_pages);
237
Yinghai Lu95f72d12010-07-12 14:36:09 +1000238 paddr = memblock_alloc(total_pages << PAGE_SHIFT, PAGE_SIZE);
Paul Mundt4bc277a2010-05-11 13:32:19 +0900239 if (!paddr)
240 panic("Can't allocate bootmap for nid[%d]\n", nid);
241
242 init_bootmem_node(p, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
243
244 free_bootmem_with_active_regions(nid, end_pfn);
245
246 /*
247 * XXX Handle initial reservations for the system memory node
248 * only for the moment, we'll refactor this later for handling
249 * reservations in other nodes.
250 */
251 if (nid == 0) {
Benjamin Herrenschmidt64106ca2010-08-04 14:11:04 +1000252 struct memblock_region *reg;
253
Paul Mundt4bc277a2010-05-11 13:32:19 +0900254 /* Reserve the sections we're already using. */
Benjamin Herrenschmidt64106ca2010-08-04 14:11:04 +1000255 for_each_memblock(reserved, reg) {
256 reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
257 }
Paul Mundt4bc277a2010-05-11 13:32:19 +0900258 }
259
260 sparse_memory_present_with_active_regions(nid);
261}
262
263static void __init do_init_bootmem(void)
264{
Benjamin Herrenschmidt64106ca2010-08-04 14:11:04 +1000265 struct memblock_region *reg;
Paul Mundt4bc277a2010-05-11 13:32:19 +0900266 int i;
267
268 /* Add active regions with valid PFNs. */
Benjamin Herrenschmidt64106ca2010-08-04 14:11:04 +1000269 for_each_memblock(memory, reg) {
Paul Mundt4bc277a2010-05-11 13:32:19 +0900270 unsigned long start_pfn, end_pfn;
Yinghai Luc7fc2de2010-10-12 14:07:09 -0700271 start_pfn = memblock_region_memory_base_pfn(reg);
272 end_pfn = memblock_region_memory_end_pfn(reg);
Paul Mundt4bc277a2010-05-11 13:32:19 +0900273 __add_active_range(0, start_pfn, end_pfn);
274 }
275
276 /* All of system RAM sits in node 0 for the non-NUMA case */
277 allocate_pgdat(0);
278 node_set_online(0);
279
280 plat_mem_setup();
281
282 for_each_online_node(i)
283 bootmem_init_one_node(i);
284
285 sparse_init();
286}
287
288static void __init early_reserve_mem(void)
289{
290 unsigned long start_pfn;
Simon Hormane66ac3f2011-09-15 20:13:00 +0900291 u32 zero_base = (u32)__MEMORY_START + (u32)PHYSICAL_OFFSET;
292 u32 start = zero_base + (u32)CONFIG_ZERO_PAGE_OFFSET;
Paul Mundt4bc277a2010-05-11 13:32:19 +0900293
294 /*
295 * Partially used pages are not usable - thus
296 * we are rounding upwards:
297 */
298 start_pfn = PFN_UP(__pa(_end));
299
300 /*
301 * Reserve the kernel text and Reserve the bootmem bitmap. We do
302 * this in two steps (first step was init_bootmem()), because
303 * this catches the (definitely buggy) case of us accidentally
304 * initializing the bootmem allocator with an invalid RAM area.
305 */
Simon Hormane66ac3f2011-09-15 20:13:00 +0900306 memblock_reserve(start, (PFN_PHYS(start_pfn) + PAGE_SIZE - 1) - start);
Paul Mundt4bc277a2010-05-11 13:32:19 +0900307
308 /*
309 * Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
310 */
311 if (CONFIG_ZERO_PAGE_OFFSET != 0)
Simon Hormane66ac3f2011-09-15 20:13:00 +0900312 memblock_reserve(zero_base, CONFIG_ZERO_PAGE_OFFSET);
Paul Mundt4bc277a2010-05-11 13:32:19 +0900313
314 /*
315 * Handle additional early reservations
316 */
317 check_for_initrd();
318 reserve_crashkernel();
319}
320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321void __init paging_init(void)
322{
Paul Mundt2de212e2007-06-06 12:09:54 +0900323 unsigned long max_zone_pfns[MAX_NR_ZONES];
Paul Mundt0906a3a2009-09-03 17:21:10 +0900324 unsigned long vaddr, end;
Paul Mundt01066622007-03-28 16:38:13 +0900325 int nid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
Paul Mundt4bc277a2010-05-11 13:32:19 +0900327 sh_mv.mv_mem_init();
328
329 early_reserve_mem();
330
Paul Mundt2f599862011-01-07 15:19:56 +0900331 /*
332 * Once the early reservations are out of the way, give the
333 * platforms a chance to kick out some memory.
334 */
335 if (sh_mv.mv_mem_reserve)
336 sh_mv.mv_mem_reserve();
337
Yinghai Lu95f72d12010-07-12 14:36:09 +1000338 memblock_enforce_memory_limit(memory_limit);
Tejun Heo1aadc052011-12-08 10:22:08 -0800339 memblock_allow_resize();
Paul Mundt4bc277a2010-05-11 13:32:19 +0900340
Yinghai Lu95f72d12010-07-12 14:36:09 +1000341 memblock_dump_all();
Paul Mundt4bc277a2010-05-11 13:32:19 +0900342
343 /*
344 * Determine low and high memory ranges:
345 */
Yinghai Lu95f72d12010-07-12 14:36:09 +1000346 max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
Paul Mundt4bc277a2010-05-11 13:32:19 +0900347 min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
348
349 nodes_clear(node_online_map);
350
351 memory_start = (unsigned long)__va(__MEMORY_START);
Yinghai Lu95f72d12010-07-12 14:36:09 +1000352 memory_end = memory_start + (memory_limit ?: memblock_phys_mem_size());
Paul Mundt4bc277a2010-05-11 13:32:19 +0900353
354 uncached_init();
355 pmb_init();
356 do_init_bootmem();
357 ioremap_fixed_init();
358
Paul Mundt01066622007-03-28 16:38:13 +0900359 /* We don't need to map the kernel through the TLB, as
360 * it is permanatly mapped using P1. So clear the
361 * entire pgd. */
362 memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363
Stuart Menefy6e4662f2006-11-21 13:53:44 +0900364 /* Set an initial value for the MMU.TTB so we don't have to
365 * check for a null value. */
366 set_TTB(swapper_pg_dir);
367
Paul Mundtacca4f42008-11-10 20:00:45 +0900368 /*
369 * Populate the relevant portions of swapper_pg_dir so that
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900370 * we can use the fixmap entries without calling kmalloc.
Paul Mundtacca4f42008-11-10 20:00:45 +0900371 * pte's will be filled in by __set_fixmap().
372 */
373 vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
Paul Mundt0906a3a2009-09-03 17:21:10 +0900374 end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
375 page_table_range_init(vaddr, end, swapper_pg_dir);
Paul Mundtacca4f42008-11-10 20:00:45 +0900376
377 kmap_coherent_init();
Stuart Menefy2adb4e12007-11-30 17:59:55 +0900378
Paul Mundt2de212e2007-06-06 12:09:54 +0900379 memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
380
Paul Mundt01066622007-03-28 16:38:13 +0900381 for_each_online_node(nid) {
382 pg_data_t *pgdat = NODE_DATA(nid);
Paul Mundt01066622007-03-28 16:38:13 +0900383 unsigned long low, start_pfn;
384
Johannes Weiner3560e242008-07-23 21:28:09 -0700385 start_pfn = pgdat->bdata->node_min_pfn;
Paul Mundt01066622007-03-28 16:38:13 +0900386 low = pgdat->bdata->node_low_pfn;
387
Paul Mundt2de212e2007-06-06 12:09:54 +0900388 if (max_zone_pfns[ZONE_NORMAL] < low)
389 max_zone_pfns[ZONE_NORMAL] = low;
Paul Mundt01066622007-03-28 16:38:13 +0900390
391 printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
392 nid, start_pfn, low);
Paul Mundt01066622007-03-28 16:38:13 +0900393 }
Paul Mundt2de212e2007-06-06 12:09:54 +0900394
395 free_area_init_nodes(max_zone_pfns);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396}
397
Paul Mundt94c28512009-10-27 17:07:45 +0900398/*
399 * Early initialization for any I/O MMUs we might have.
400 */
401static void __init iommu_init(void)
402{
403 no_iommu_init();
404}
405
Paul Mundtd9b94872010-01-18 21:08:32 +0900406unsigned int mem_init_done = 0;
407
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408void __init mem_init(void)
409{
Jiang Liuda61efc2013-07-03 15:04:12 -0700410 pg_data_t *pgdat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411
Paul Mundt94c28512009-10-27 17:07:45 +0900412 iommu_init();
413
Paul Mundt2de212e2007-06-06 12:09:54 +0900414 high_memory = NULL;
Jiang Liue3a466b2013-07-03 15:04:33 -0700415 for_each_online_pgdat(pgdat)
416 high_memory = max_t(void *, high_memory,
417 __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
Paul Mundt2de212e2007-06-06 12:09:54 +0900418
Jiang Liue3a466b2013-07-03 15:04:33 -0700419 free_all_bootmem();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420
Paul Mundt37443ef2009-08-15 12:29:49 +0900421 /* Set this up early, so we can take care of the zero page */
422 cpu_cache_init();
423
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 /* clear the zero-page */
425 memset(empty_zero_page, 0, PAGE_SIZE);
426 __flush_wback_region(empty_zero_page, PAGE_SIZE);
427
Paul Mundt35f99c02010-01-20 18:48:17 +0900428 vsyscall_init();
429
Jiang Liuda61efc2013-07-03 15:04:12 -0700430 mem_init_print_info(NULL);
431 pr_info("virtual kernel memory layout:\n"
Paul Mundt35f99c02010-01-20 18:48:17 +0900432 " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
433#ifdef CONFIG_HIGHMEM
434 " pkmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
435#endif
436 " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
Paul Mundt3125ee72010-01-21 15:54:31 +0900437 " lowmem : 0x%08lx - 0x%08lx (%4ld MB) (cached)\n"
Paul Mundtb0f3ae02010-02-12 15:40:00 +0900438#ifdef CONFIG_UNCACHED_MAPPING
Paul Mundt3125ee72010-01-21 15:54:31 +0900439 " : 0x%08lx - 0x%08lx (%4ld MB) (uncached)\n"
Paul Mundtb0f3ae02010-02-12 15:40:00 +0900440#endif
Paul Mundt35f99c02010-01-20 18:48:17 +0900441 " .init : 0x%08lx - 0x%08lx (%4ld kB)\n"
442 " .data : 0x%08lx - 0x%08lx (%4ld kB)\n"
443 " .text : 0x%08lx - 0x%08lx (%4ld kB)\n",
444 FIXADDR_START, FIXADDR_TOP,
445 (FIXADDR_TOP - FIXADDR_START) >> 10,
446
447#ifdef CONFIG_HIGHMEM
448 PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE,
449 (LAST_PKMAP*PAGE_SIZE) >> 10,
450#endif
451
452 (unsigned long)VMALLOC_START, VMALLOC_END,
453 (VMALLOC_END - VMALLOC_START) >> 20,
454
455 (unsigned long)memory_start, (unsigned long)high_memory,
456 ((unsigned long)high_memory - (unsigned long)memory_start) >> 20,
457
Paul Mundtb0f3ae02010-02-12 15:40:00 +0900458#ifdef CONFIG_UNCACHED_MAPPING
Paul Mundt9edef282010-02-17 16:28:00 +0900459 uncached_start, uncached_end, uncached_size >> 20,
Paul Mundtb0f3ae02010-02-12 15:40:00 +0900460#endif
Paul Mundt3125ee72010-01-21 15:54:31 +0900461
Paul Mundt35f99c02010-01-20 18:48:17 +0900462 (unsigned long)&__init_begin, (unsigned long)&__init_end,
463 ((unsigned long)&__init_end -
464 (unsigned long)&__init_begin) >> 10,
465
466 (unsigned long)&_etext, (unsigned long)&_edata,
467 ((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
468
469 (unsigned long)&_text, (unsigned long)&_etext,
470 ((unsigned long)&_etext - (unsigned long)&_text) >> 10);
Paul Mundtd9b94872010-01-18 21:08:32 +0900471
472 mem_init_done = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473}
474
475void free_initmem(void)
476{
Jiang Liudbe67df2013-07-03 15:02:51 -0700477 free_initmem_default(-1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478}
479
480#ifdef CONFIG_BLK_DEV_INITRD
481void free_initrd_mem(unsigned long start, unsigned long end)
482{
Jiang Liudbe67df2013-07-03 15:02:51 -0700483 free_reserved_area((void *)start, (void *)end, -1, "initrd");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484}
485#endif
Paul Mundt33d63bd2007-06-07 11:32:52 +0900486
487#ifdef CONFIG_MEMORY_HOTPLUG
Paul Mundt33d63bd2007-06-07 11:32:52 +0900488int arch_add_memory(int nid, u64 start, u64 size)
489{
490 pg_data_t *pgdat;
491 unsigned long start_pfn = start >> PAGE_SHIFT;
492 unsigned long nr_pages = size >> PAGE_SHIFT;
493 int ret;
494
495 pgdat = NODE_DATA(nid);
496
497 /* We only have ZONE_NORMAL, so this is easy.. */
Wang Nan6e90b582014-08-06 16:07:47 -0700498 ret = __add_pages(nid, pgdat->node_zones +
499 zone_for_memory(nid, start, size, ZONE_NORMAL),
500 start_pfn, nr_pages);
Paul Mundt33d63bd2007-06-07 11:32:52 +0900501 if (unlikely(ret))
Harvey Harrison866e6b92008-03-04 15:23:47 -0800502 printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
Paul Mundt33d63bd2007-06-07 11:32:52 +0900503
504 return ret;
505}
506EXPORT_SYMBOL_GPL(arch_add_memory);
507
Paul Mundt357d5942007-06-11 15:32:07 +0900508#ifdef CONFIG_NUMA
Paul Mundt33d63bd2007-06-07 11:32:52 +0900509int memory_add_physaddr_to_nid(u64 addr)
510{
511 /* Node 0 for now.. */
512 return 0;
513}
514EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
515#endif
Matt Fleming1f69b6a2009-10-06 21:22:25 +0000516
Wen Congyang24d335c2013-02-22 16:32:58 -0800517#ifdef CONFIG_MEMORY_HOTREMOVE
518int arch_remove_memory(u64 start, u64 size)
519{
520 unsigned long start_pfn = start >> PAGE_SHIFT;
521 unsigned long nr_pages = size >> PAGE_SHIFT;
522 struct zone *zone;
523 int ret;
524
525 zone = page_zone(pfn_to_page(start_pfn));
526 ret = __remove_pages(zone, start_pfn, nr_pages);
527 if (unlikely(ret))
528 pr_warn("%s: Failed, __remove_pages() == %d\n", __func__,
529 ret);
530
531 return ret;
532}
533#endif
Paul Mundt3159e7d2008-09-05 15:39:12 +0900534#endif /* CONFIG_MEMORY_HOTPLUG */