#include <linux/initrd.h>
#include <linux/highmem.h>
#include <linux/gfp.h>
+#include <linux/memblock.h>
#include <asm/mach-types.h>
#include <asm/sections.h>
void show_mem(void)
{
int free = 0, total = 0, reserved = 0;
- int shared = 0, cached = 0, slab = 0, node, i;
+ int shared = 0, cached = 0, slab = 0, i;
struct meminfo * mi = &meminfo;
printk("Mem-info:\n");
show_free_areas();
- for_each_online_node(node) {
- for_each_nodebank (i,mi,node) {
- struct membank *bank = &mi->bank[i];
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = bank_pfn_start(bank);
- pfn2 = bank_pfn_end(bank);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- total++;
- if (PageReserved(page))
- reserved++;
- else if (PageSwapCache(page))
- cached++;
- else if (PageSlab(page))
- slab++;
- else if (!page_count(page))
- free++;
- else
- shared += page_count(page) - 1;
- page++;
- } while (page < end);
- }
+
+ for_each_bank (i, mi) {
+ struct membank *bank = &mi->bank[i];
+ unsigned int pfn1, pfn2;
+ struct page *page, *end;
+
+ pfn1 = bank_pfn_start(bank);
+ pfn2 = bank_pfn_end(bank);
+
+ page = pfn_to_page(pfn1);
+ end = pfn_to_page(pfn2 - 1) + 1;
+
+ do {
+ total++;
+ if (PageReserved(page))
+ reserved++;
+ else if (PageSwapCache(page))
+ cached++;
+ else if (PageSlab(page))
+ slab++;
+ else if (!page_count(page))
+ free++;
+ else
+ shared += page_count(page) - 1;
+ page++;
+ } while (page < end);
}
printk("%d pages of RAM\n", total);
printk("%d pages swap cached\n", cached);
}
-static void __init find_node_limits(int node, struct meminfo *mi,
+static void __init find_limits(struct meminfo *mi,
unsigned long *min, unsigned long *max_low, unsigned long *max_high)
{
int i;
*min = -1UL;
*max_low = *max_high = 0;
- for_each_nodebank(i, mi, node) {
+ for_each_bank (i, mi) {
struct membank *bank = &mi->bank[i];
unsigned long start, end;
}
}
-/*
- * FIXME: We really want to avoid allocating the bootmap bitmap
- * over the top of the initrd. Hopefully, this is located towards
- * the start of a bank, so if we allocate the bootmap bitmap at
- * the end, we won't clash.
- */
-static unsigned int __init
-find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
-{
- unsigned int start_pfn, i, bootmap_pfn;
-
- start_pfn = PAGE_ALIGN(__pa(_end)) >> PAGE_SHIFT;
- bootmap_pfn = 0;
-
- for_each_nodebank(i, mi, node) {
- struct membank *bank = &mi->bank[i];
- unsigned int start, end;
-
- start = bank_pfn_start(bank);
- end = bank_pfn_end(bank);
-
- if (end < start_pfn)
- continue;
-
- if (start < start_pfn)
- start = start_pfn;
-
- if (end <= start)
- continue;
-
- if (end - start >= bootmap_pages) {
- bootmap_pfn = start;
- break;
- }
- }
-
- if (bootmap_pfn == 0)
- BUG();
-
- return bootmap_pfn;
-}
-
-static int __init check_initrd(struct meminfo *mi)
-{
- int initrd_node = -2;
-#ifdef CONFIG_BLK_DEV_INITRD
- unsigned long end = phys_initrd_start + phys_initrd_size;
-
- /*
- * Make sure that the initrd is within a valid area of
- * memory.
- */
- if (phys_initrd_size) {
- unsigned int i;
-
- initrd_node = -1;
-
- for (i = 0; i < mi->nr_banks; i++) {
- struct membank *bank = &mi->bank[i];
- if (bank_phys_start(bank) <= phys_initrd_start &&
- end <= bank_phys_end(bank))
- initrd_node = bank->node;
- }
- }
-
- if (initrd_node == -1) {
- printk(KERN_ERR "INITRD: 0x%08lx+0x%08lx extends beyond "
- "physical memory - disabling initrd\n",
- phys_initrd_start, phys_initrd_size);
- phys_initrd_start = phys_initrd_size = 0;
- }
-#endif
-
- return initrd_node;
-}
-
-static void __init bootmem_init_node(int node, struct meminfo *mi,
+static void __init arm_bootmem_init(struct meminfo *mi,
unsigned long start_pfn, unsigned long end_pfn)
{
- unsigned long boot_pfn;
unsigned int boot_pages;
+ phys_addr_t bitmap;
pg_data_t *pgdat;
int i;
/*
- * Allocate the bootmem bitmap page.
+ * Allocate the bootmem bitmap page. This must be in a region
+ * of memory which has already been mapped.
*/
boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
- boot_pfn = find_bootmap_pfn(node, mi, boot_pages);
+ bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES,
+ __pfn_to_phys(end_pfn));
/*
- * Initialise the bootmem allocator for this node, handing the
+ * Initialise the bootmem allocator, handing the
* memory banks over to bootmem.
*/
- node_set_online(node);
- pgdat = NODE_DATA(node);
- init_bootmem_node(pgdat, boot_pfn, start_pfn, end_pfn);
+ node_set_online(0);
+ pgdat = NODE_DATA(0);
+ init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
struct membank *bank = &mi->bank[i];
if (!bank->highmem)
- free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank));
+ free_bootmem(bank_phys_start(bank), bank_phys_size(bank));
}
/*
- * Reserve the bootmem bitmap for this node.
+ * Reserve the memblock reserved regions in bootmem.
*/
- reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT,
- boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
-}
-
-static void __init bootmem_reserve_initrd(int node)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
- pg_data_t *pgdat = NODE_DATA(node);
- int res;
-
- res = reserve_bootmem_node(pgdat, phys_initrd_start,
- phys_initrd_size, BOOTMEM_EXCLUSIVE);
-
- if (res == 0) {
- initrd_start = __phys_to_virt(phys_initrd_start);
- initrd_end = initrd_start + phys_initrd_size;
- } else {
- printk(KERN_ERR
- "INITRD: 0x%08lx+0x%08lx overlaps in-use "
- "memory region - disabling initrd\n",
- phys_initrd_start, phys_initrd_size);
+ for (i = 0; i < memblock.reserved.cnt; i++) {
+ phys_addr_t start = memblock_start_pfn(&memblock.reserved, i);
+ if (start >= start_pfn &&
+ memblock_end_pfn(&memblock.reserved, i) <= end_pfn)
+ reserve_bootmem_node(pgdat, __pfn_to_phys(start),
+ memblock_size_bytes(&memblock.reserved, i),
+ BOOTMEM_DEFAULT);
}
-#endif
}
-static void __init bootmem_free_node(int node, struct meminfo *mi)
+static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
+ unsigned long max_low, unsigned long max_high)
{
unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
- unsigned long min, max_low, max_high;
int i;
- find_node_limits(node, mi, &min, &max_low, &max_high);
-
/*
- * initialise the zones within this node.
+ * initialise the zones.
*/
memset(zone_size, 0, sizeof(zone_size));
/*
- * The size of this node has already been determined. If we need
- * to do anything fancy with the allocation of this memory to the
- * zones, now is the time to do it.
+ * The memory size has already been determined. If we need
+ * to do anything fancy with the allocation of this memory
+ * to the zones, now is the time to do it.
*/
zone_size[0] = max_low - min;
#ifdef CONFIG_HIGHMEM
#endif
/*
- * For each bank in this node, calculate the size of the holes.
- * holes = node_size - sum(bank_sizes_in_node)
+ * Calculate the size of the holes.
+ * holes = node_size - sum(bank_sizes)
*/
memcpy(zhole_size, zone_size, sizeof(zhole_size));
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
int idx = 0;
#ifdef CONFIG_HIGHMEM
if (mi->bank[i].highmem)
* Adjust the sizes according to any special requirements for
* this machine type.
*/
- arch_adjust_zones(node, zone_size, zhole_size);
+ arch_adjust_zones(zone_size, zhole_size);
- free_area_init_node(node, zone_size, min, zhole_size);
+ free_area_init_node(0, zone_size, min, zhole_size);
}
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct meminfo *mi = &meminfo;
- unsigned int left = 0, right = mi->nr_banks;
+ struct memblock_region *mem = &memblock.memory;
+ unsigned int left = 0, right = mem->cnt;
do {
unsigned int mid = (right + left) / 2;
- struct membank *bank = &mi->bank[mid];
- if (pfn < bank_pfn_start(bank))
+ if (pfn < memblock_start_pfn(mem, mid))
right = mid;
- else if (pfn >= bank_pfn_end(bank))
+ else if (pfn >= memblock_end_pfn(mem, mid))
left = mid + 1;
else
return 1;
}
EXPORT_SYMBOL(pfn_valid);
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(void)
{
}
#else
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(void)
{
int i;
- for_each_nodebank(i, mi, node) {
- struct membank *bank = &mi->bank[i];
- memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
- }
+ for (i = 0; i < memblock.memory.cnt; i++)
+ memory_present(0, memblock_start_pfn(&memblock.memory, i),
+ memblock_end_pfn(&memblock.memory, i));
}
#endif
-void __init bootmem_init(void)
+void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
{
- struct meminfo *mi = &meminfo;
- unsigned long min, max_low, max_high;
- int node, initrd_node;
+ int i;
- /*
- * Locate which node contains the ramdisk image, if any.
- */
- initrd_node = check_initrd(mi);
+ memblock_init();
+ for (i = 0; i < mi->nr_banks; i++)
+ memblock_add(mi->bank[i].start, mi->bank[i].size);
- max_low = max_high = 0;
+ /* Register the kernel text, kernel data and initrd with memblock. */
+#ifdef CONFIG_XIP_KERNEL
+ memblock_reserve(__pa(_data), _end - _data);
+#else
+ memblock_reserve(__pa(_stext), _end - _stext);
+#endif
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (phys_initrd_size) {
+ memblock_reserve(phys_initrd_start, phys_initrd_size);
- /*
- * Run through each node initialising the bootmem allocator.
- */
- for_each_node(node) {
- unsigned long node_low, node_high;
+ /* Now convert initrd to virtual addresses */
+ initrd_start = __phys_to_virt(phys_initrd_start);
+ initrd_end = initrd_start + phys_initrd_size;
+ }
+#endif
- find_node_limits(node, mi, &min, &node_low, &node_high);
+ arm_mm_memblock_reserve();
- if (node_low > max_low)
- max_low = node_low;
- if (node_high > max_high)
- max_high = node_high;
+ /* reserve any platform specific memblock areas */
+ if (mdesc->reserve)
+ mdesc->reserve();
- /*
- * If there is no memory in this node, ignore it.
- * (We can't have nodes which have no lowmem)
- */
- if (node_low == 0)
- continue;
+ memblock_analyze();
+ memblock_dump_all();
+}
+
+void __init bootmem_init(void)
+{
+ struct meminfo *mi = &meminfo;
+ unsigned long min, max_low, max_high;
- bootmem_init_node(node, mi, min, node_low);
+ max_low = max_high = 0;
- /*
- * Reserve any special node zero regions.
- */
- if (node == 0)
- reserve_node_zero(NODE_DATA(node));
+ find_limits(mi, &min, &max_low, &max_high);
- /*
- * If the initrd is in this node, reserve its memory.
- */
- if (node == initrd_node)
- bootmem_reserve_initrd(node);
+ arm_bootmem_init(mi, min, max_low);
- /*
- * Sparsemem tries to allocate bootmem in memory_present(),
- * so must be done after the fixed reservations
- */
- arm_memory_present(mi, node);
- }
+ /*
+ * Sparsemem tries to allocate bootmem in memory_present(),
+ * so must be done after the fixed reservations
+ */
+ arm_memory_present();
/*
* sparse_init() needs the bootmem allocator up and running.
sparse_init();
/*
- * Now free memory in each node - free_area_init_node needs
+ * Now free the memory - free_area_init_node needs
* the sparse mem_map arrays initialized by sparse_init()
* for memmap_init_zone(), otherwise all PFNs are invalid.
*/
- for_each_node(node)
- bootmem_free_node(node, mi);
+ arm_bootmem_free(mi, min, max_low, max_high);
high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1;
}
static inline void
-free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
+free_memmap(unsigned long start_pfn, unsigned long end_pfn)
{
struct page *start_pg, *end_pg;
unsigned long pg, pgend;
* free the section of the memmap array.
*/
if (pg < pgend)
- free_bootmem_node(NODE_DATA(node), pg, pgend - pg);
+ free_bootmem(pg, pgend - pg);
}
/*
* The mem_map array can get very big. Free the unused area of the memory map.
*/
-static void __init free_unused_memmap_node(int node, struct meminfo *mi)
+static void __init free_unused_memmap(struct meminfo *mi)
{
unsigned long bank_start, prev_bank_end = 0;
unsigned int i;
* may not be the case, especially if the user has provided the
* information on the command line.
*/
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
struct membank *bank = &mi->bank[i];
bank_start = bank_pfn_start(bank);
* between the current bank and the previous, free it.
*/
if (prev_bank_end && prev_bank_end != bank_start)
- free_memmap(node, prev_bank_end, bank_start);
+ free_memmap(prev_bank_end, bank_start);
prev_bank_end = bank_pfn_end(bank);
}
void __init mem_init(void)
{
unsigned long reserved_pages, free_pages;
- int i, node;
+ int i;
+#ifdef CONFIG_HAVE_TCM
+ /* These pointers are filled in on TCM detection */
+ extern u32 dtcm_end;
+ extern u32 itcm_end;
+#endif
-#ifndef CONFIG_DISCONTIGMEM
max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
-#endif
/* this will put all unused low memory onto the freelists */
- for_each_online_node(node) {
- pg_data_t *pgdat = NODE_DATA(node);
+ free_unused_memmap(&meminfo);
- free_unused_memmap_node(node, &meminfo);
-
- if (pgdat->node_spanned_pages != 0)
- totalram_pages += free_all_bootmem_node(pgdat);
- }
+ totalram_pages += free_all_bootmem();
#ifdef CONFIG_SA1111
/* now that our DMA memory is actually so designated, we can free it */
#ifdef CONFIG_HIGHMEM
/* set highmem page free */
- for_each_online_node(node) {
- for_each_nodebank (i, &meminfo, node) {
- unsigned long start = bank_pfn_start(&meminfo.bank[i]);
- unsigned long end = bank_pfn_end(&meminfo.bank[i]);
- if (start >= max_low_pfn + PHYS_PFN_OFFSET)
- totalhigh_pages += free_area(start, end, NULL);
- }
+ for_each_bank (i, &meminfo) {
+ unsigned long start = bank_pfn_start(&meminfo.bank[i]);
+ unsigned long end = bank_pfn_end(&meminfo.bank[i]);
+ if (start >= max_low_pfn + PHYS_PFN_OFFSET)
+ totalhigh_pages += free_area(start, end, NULL);
}
totalram_pages += totalhigh_pages;
#endif
reserved_pages = free_pages = 0;
- for_each_online_node(node) {
- for_each_nodebank(i, &meminfo, node) {
- struct membank *bank = &meminfo.bank[i];
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = bank_pfn_start(bank);
- pfn2 = bank_pfn_end(bank);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- if (PageReserved(page))
- reserved_pages++;
- else if (!page_count(page))
- free_pages++;
- page++;
- } while (page < end);
- }
+ for_each_bank(i, &meminfo) {
+ struct membank *bank = &meminfo.bank[i];
+ unsigned int pfn1, pfn2;
+ struct page *page, *end;
+
+ pfn1 = bank_pfn_start(bank);
+ pfn2 = bank_pfn_end(bank);
+
+ page = pfn_to_page(pfn1);
+ end = pfn_to_page(pfn2 - 1) + 1;
+
+ do {
+ if (PageReserved(page))
+ reserved_pages++;
+ else if (!page_count(page))
+ free_pages++;
+ page++;
+ } while (page < end);
}
/*
printk(KERN_NOTICE "Virtual kernel memory layout:\n"
" vector : 0x%08lx - 0x%08lx (%4ld kB)\n"
+#ifdef CONFIG_HAVE_TCM
+ " DTCM : 0x%08lx - 0x%08lx (%4ld kB)\n"
+ " ITCM : 0x%08lx - 0x%08lx (%4ld kB)\n"
+#endif
" fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
#ifdef CONFIG_MMU
" DMA : 0x%08lx - 0x%08lx (%4ld MB)\n"
MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +
(PAGE_SIZE)),
+#ifdef CONFIG_HAVE_TCM
+ MLK(DTCM_OFFSET, (unsigned long) dtcm_end),
+ MLK(ITCM_OFFSET, (unsigned long) itcm_end),
+#endif
MLK(FIXADDR_START, FIXADDR_TOP),
#ifdef CONFIG_MMU
MLM(CONSISTENT_BASE, CONSISTENT_END),
git.samba.org / sfrench / cifs-2.6.git / blobdiff