#include <linux/clk.h>
#include <linux/init.h>
+#include <linux/initrd.h>
#include <linux/sched.h>
#include <linux/console.h>
#include <linux/ioport.h>
#include <linux/bootmem.h>
#include <linux/fs.h>
#include <linux/module.h>
+#include <linux/pfn.h>
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <linux/kernel.h>
t->hdr.tag);
}
+static void __init print_memory_map(const char *what,
+ struct tag_mem_range *mem)
+{
+ printk ("%s:\n", what);
+ for (; mem; mem = mem->next) {
+ printk (" %08lx - %08lx\n",
+ (unsigned long)mem->addr,
+ (unsigned long)(mem->addr + mem->size));
+ }
+}
+
+#define MAX_LOWMEM HIGHMEM_START
+#define MAX_LOWMEM_PFN PFN_DOWN(MAX_LOWMEM)
+
+/*
+ * Sort a list of memory regions in-place by ascending address.
+ *
+ * We're using bubble sort because we only have singly linked lists
+ * with few elements.
+ */
+static void __init sort_mem_list(struct tag_mem_range **pmem)
+{
+ int done;
+ struct tag_mem_range **a, **b;
+
+ if (!*pmem)
+ return;
+
+ do {
+ done = 1;
+ a = pmem, b = &(*pmem)->next;
+ while (*b) {
+ if ((*a)->addr > (*b)->addr) {
+ struct tag_mem_range *tmp;
+ tmp = (*b)->next;
+ (*b)->next = *a;
+ *a = *b;
+ *b = tmp;
+ done = 0;
+ }
+ a = &(*a)->next;
+ b = &(*a)->next;
+ }
+ } while (!done);
+}
+
+/*
+ * Find a free memory region large enough for storing the
+ * bootmem bitmap.
+ */
+static unsigned long __init
+find_bootmap_pfn(const struct tag_mem_range *mem)
+{
+ unsigned long bootmap_pages, bootmap_len;
+ unsigned long node_pages = PFN_UP(mem->size);
+ unsigned long bootmap_addr = mem->addr;
+ struct tag_mem_range *reserved = mem_reserved;
+ struct tag_mem_range *ramdisk = mem_ramdisk;
+ unsigned long kern_start = __pa(_stext);
+ unsigned long kern_end = __pa(_end);
+
+ bootmap_pages = bootmem_bootmap_pages(node_pages);
+ bootmap_len = bootmap_pages << PAGE_SHIFT;
+
+ /*
+ * Find a large enough region without reserved pages for
+ * storing the bootmem bitmap. We can take advantage of the
+ * fact that all lists have been sorted.
+ *
+ * We have to check explicitly reserved regions as well as the
+ * kernel image and any RAMDISK images...
+ *
+ * Oh, and we have to make sure we don't overwrite the taglist
+ * since we're going to use it until the bootmem allocator is
+ * fully up and running.
+ */
+ while (1) {
+ if ((bootmap_addr < kern_end) &&
+ ((bootmap_addr + bootmap_len) > kern_start))
+ bootmap_addr = kern_end;
+
+ while (reserved &&
+ (bootmap_addr >= (reserved->addr + reserved->size)))
+ reserved = reserved->next;
+
+ if (reserved &&
+ ((bootmap_addr + bootmap_len) >= reserved->addr)) {
+ bootmap_addr = reserved->addr + reserved->size;
+ continue;
+ }
+
+ while (ramdisk &&
+ (bootmap_addr >= (ramdisk->addr + ramdisk->size)))
+ ramdisk = ramdisk->next;
+
+ if (!ramdisk ||
+ ((bootmap_addr + bootmap_len) < ramdisk->addr))
+ break;
+
+ bootmap_addr = ramdisk->addr + ramdisk->size;
+ }
+
+ if ((PFN_UP(bootmap_addr) + bootmap_len) >= (mem->addr + mem->size))
+ return ~0UL;
+
+ return PFN_UP(bootmap_addr);
+}
+
+static void __init setup_bootmem(void)
+{
+ unsigned bootmap_size;
+ unsigned long first_pfn, bootmap_pfn, pages;
+ unsigned long max_pfn, max_low_pfn;
+ unsigned long kern_start = __pa(_stext);
+ unsigned long kern_end = __pa(_end);
+ unsigned node = 0;
+ struct tag_mem_range *bank, *res;
+
+ sort_mem_list(&mem_phys);
+ sort_mem_list(&mem_reserved);
+
+ print_memory_map("Physical memory", mem_phys);
+ print_memory_map("Reserved memory", mem_reserved);
+
+ nodes_clear(node_online_map);
+
+ if (mem_ramdisk) {
+#ifdef CONFIG_BLK_DEV_INITRD
+ initrd_start = (unsigned long)__va(mem_ramdisk->addr);
+ initrd_end = initrd_start + mem_ramdisk->size;
+
+ print_memory_map("RAMDISK images", mem_ramdisk);
+ if (mem_ramdisk->next)
+ printk(KERN_WARNING
+ "Warning: Only the first RAMDISK image "
+ "will be used\n");
+ sort_mem_list(&mem_ramdisk);
+#else
+ printk(KERN_WARNING "RAM disk image present, but "
+ "no initrd support in kernel!\n");
+#endif
+ }
+
+ if (mem_phys->next)
+ printk(KERN_WARNING "Only using first memory bank\n");
+
+ for (bank = mem_phys; bank; bank = NULL) {
+ first_pfn = PFN_UP(bank->addr);
+ max_low_pfn = max_pfn = PFN_DOWN(bank->addr + bank->size);
+ bootmap_pfn = find_bootmap_pfn(bank);
+ if (bootmap_pfn > max_pfn)
+ panic("No space for bootmem bitmap!\n");
+
+ if (max_low_pfn > MAX_LOWMEM_PFN) {
+ max_low_pfn = MAX_LOWMEM_PFN;
+#ifndef CONFIG_HIGHMEM
+ /*
+ * Lowmem is memory that can be addressed
+ * directly through P1/P2
+ */
+ printk(KERN_WARNING
+ "Node %u: Only %ld MiB of memory will be used.\n",
+ node, MAX_LOWMEM >> 20);
+ printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
+#else
+#error HIGHMEM is not supported by AVR32 yet
+#endif
+ }
+
+ /* Initialize the boot-time allocator with low memory only. */
+ bootmap_size = init_bootmem_node(NODE_DATA(node), bootmap_pfn,
+ first_pfn, max_low_pfn);
+
+ printk("Node %u: bdata = %p, bdata->node_bootmem_map = %p\n",
+ node, NODE_DATA(node)->bdata,
+ NODE_DATA(node)->bdata->node_bootmem_map);
+
+ /*
+ * Register fully available RAM pages with the bootmem
+ * allocator.
+ */
+ pages = max_low_pfn - first_pfn;
+ free_bootmem_node (NODE_DATA(node), PFN_PHYS(first_pfn),
+ PFN_PHYS(pages));
+
+ /*
+ * Reserve space for the kernel image (if present in
+ * this node)...
+ */
+ if ((kern_start >= PFN_PHYS(first_pfn)) &&
+ (kern_start < PFN_PHYS(max_pfn))) {
+ printk("Node %u: Kernel image %08lx - %08lx\n",
+ node, kern_start, kern_end);
+ reserve_bootmem_node(NODE_DATA(node), kern_start,
+ kern_end - kern_start);
+ }
+
+ /* ...the bootmem bitmap... */
+ reserve_bootmem_node(NODE_DATA(node),
+ PFN_PHYS(bootmap_pfn),
+ bootmap_size);
+
+ /* ...any RAMDISK images... */
+ for (res = mem_ramdisk; res; res = res->next) {
+ if (res->addr > PFN_PHYS(max_pfn))
+ break;
+
+ if (res->addr >= PFN_PHYS(first_pfn)) {
+ printk("Node %u: RAMDISK %08lx - %08lx\n",
+ node,
+ (unsigned long)res->addr,
+ (unsigned long)(res->addr + res->size));
+ reserve_bootmem_node(NODE_DATA(node),
+ res->addr, res->size);
+ }
+ }
+
+ /* ...and any other reserved regions. */
+ for (res = mem_reserved; res; res = res->next) {
+ if (res->addr > PFN_PHYS(max_pfn))
+ break;
+
+ if (res->addr >= PFN_PHYS(first_pfn)) {
+ printk("Node %u: Reserved %08lx - %08lx\n",
+ node,
+ (unsigned long)res->addr,
+ (unsigned long)(res->addr + res->size));
+ reserve_bootmem_node(NODE_DATA(node),
+ res->addr, res->size);
+ }
+ }
+
+ node_set_online(node);
+ }
+}
+
void __init setup_arch (char **cmdline_p)
{
struct clk *cpu_clk;
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/init.h>
-#include <linux/initrd.h>
#include <linux/mmzone.h>
#include <linux/bootmem.h>
#include <linux/pagemap.h>
-#include <linux/pfn.h>
#include <linux/nodemask.h>
#include <asm/page.h>
printk ("%d pages swap cached\n", cached);
}
-static void __init print_memory_map(const char *what,
- struct tag_mem_range *mem)
-{
- printk ("%s:\n", what);
- for (; mem; mem = mem->next) {
- printk (" %08lx - %08lx\n",
- (unsigned long)mem->addr,
- (unsigned long)(mem->addr + mem->size));
- }
-}
-
-#define MAX_LOWMEM HIGHMEM_START
-#define MAX_LOWMEM_PFN PFN_DOWN(MAX_LOWMEM)
-
-/*
- * Sort a list of memory regions in-place by ascending address.
- *
- * We're using bubble sort because we only have singly linked lists
- * with few elements.
- */
-static void __init sort_mem_list(struct tag_mem_range **pmem)
-{
- int done;
- struct tag_mem_range **a, **b;
-
- if (!*pmem)
- return;
-
- do {
- done = 1;
- a = pmem, b = &(*pmem)->next;
- while (*b) {
- if ((*a)->addr > (*b)->addr) {
- struct tag_mem_range *tmp;
- tmp = (*b)->next;
- (*b)->next = *a;
- *a = *b;
- *b = tmp;
- done = 0;
- }
- a = &(*a)->next;
- b = &(*a)->next;
- }
- } while (!done);
-}
-
-/*
- * Find a free memory region large enough for storing the
- * bootmem bitmap.
- */
-static unsigned long __init
-find_bootmap_pfn(const struct tag_mem_range *mem)
-{
- unsigned long bootmap_pages, bootmap_len;
- unsigned long node_pages = PFN_UP(mem->size);
- unsigned long bootmap_addr = mem->addr;
- struct tag_mem_range *reserved = mem_reserved;
- struct tag_mem_range *ramdisk = mem_ramdisk;
- unsigned long kern_start = virt_to_phys(_stext);
- unsigned long kern_end = virt_to_phys(_end);
-
- bootmap_pages = bootmem_bootmap_pages(node_pages);
- bootmap_len = bootmap_pages << PAGE_SHIFT;
-
- /*
- * Find a large enough region without reserved pages for
- * storing the bootmem bitmap. We can take advantage of the
- * fact that all lists have been sorted.
- *
- * We have to check explicitly reserved regions as well as the
- * kernel image and any RAMDISK images...
- *
- * Oh, and we have to make sure we don't overwrite the taglist
- * since we're going to use it until the bootmem allocator is
- * fully up and running.
- */
- while (1) {
- if ((bootmap_addr < kern_end) &&
- ((bootmap_addr + bootmap_len) > kern_start))
- bootmap_addr = kern_end;
-
- while (reserved &&
- (bootmap_addr >= (reserved->addr + reserved->size)))
- reserved = reserved->next;
-
- if (reserved &&
- ((bootmap_addr + bootmap_len) >= reserved->addr)) {
- bootmap_addr = reserved->addr + reserved->size;
- continue;
- }
-
- while (ramdisk &&
- (bootmap_addr >= (ramdisk->addr + ramdisk->size)))
- ramdisk = ramdisk->next;
-
- if (!ramdisk ||
- ((bootmap_addr + bootmap_len) < ramdisk->addr))
- break;
-
- bootmap_addr = ramdisk->addr + ramdisk->size;
- }
-
- if ((PFN_UP(bootmap_addr) + bootmap_len) >= (mem->addr + mem->size))
- return ~0UL;
-
- return PFN_UP(bootmap_addr);
-}
-
-void __init setup_bootmem(void)
-{
- unsigned bootmap_size;
- unsigned long first_pfn, bootmap_pfn, pages;
- unsigned long max_pfn, max_low_pfn;
- unsigned long kern_start = virt_to_phys(_stext);
- unsigned long kern_end = virt_to_phys(_end);
- unsigned node = 0;
- struct tag_mem_range *bank, *res;
-
- sort_mem_list(&mem_phys);
- sort_mem_list(&mem_reserved);
-
- print_memory_map("Physical memory", mem_phys);
- print_memory_map("Reserved memory", mem_reserved);
-
- nodes_clear(node_online_map);
-
- if (mem_ramdisk) {
-#ifdef CONFIG_BLK_DEV_INITRD
- initrd_start = (unsigned long)__va(mem_ramdisk->addr);
- initrd_end = initrd_start + mem_ramdisk->size;
-
- print_memory_map("RAMDISK images", mem_ramdisk);
- if (mem_ramdisk->next)
- printk(KERN_WARNING
- "Warning: Only the first RAMDISK image "
- "will be used\n");
- sort_mem_list(&mem_ramdisk);
-#else
- printk(KERN_WARNING "RAM disk image present, but "
- "no initrd support in kernel!\n");
-#endif
- }
-
- if (mem_phys->next)
- printk(KERN_WARNING "Only using first memory bank\n");
-
- for (bank = mem_phys; bank; bank = NULL) {
- first_pfn = PFN_UP(bank->addr);
- max_low_pfn = max_pfn = PFN_DOWN(bank->addr + bank->size);
- bootmap_pfn = find_bootmap_pfn(bank);
- if (bootmap_pfn > max_pfn)
- panic("No space for bootmem bitmap!\n");
-
- if (max_low_pfn > MAX_LOWMEM_PFN) {
- max_low_pfn = MAX_LOWMEM_PFN;
-#ifndef CONFIG_HIGHMEM
- /*
- * Lowmem is memory that can be addressed
- * directly through P1/P2
- */
- printk(KERN_WARNING
- "Node %u: Only %ld MiB of memory will be used.\n",
- node, MAX_LOWMEM >> 20);
- printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
-#else
-#error HIGHMEM is not supported by AVR32 yet
-#endif
- }
-
- /* Initialize the boot-time allocator with low memory only. */
- bootmap_size = init_bootmem_node(NODE_DATA(node), bootmap_pfn,
- first_pfn, max_low_pfn);
-
- printk("Node %u: bdata = %p, bdata->node_bootmem_map = %p\n",
- node, NODE_DATA(node)->bdata,
- NODE_DATA(node)->bdata->node_bootmem_map);
-
- /*
- * Register fully available RAM pages with the bootmem
- * allocator.
- */
- pages = max_low_pfn - first_pfn;
- free_bootmem_node (NODE_DATA(node), PFN_PHYS(first_pfn),
- PFN_PHYS(pages));
-
- /*
- * Reserve space for the kernel image (if present in
- * this node)...
- */
- if ((kern_start >= PFN_PHYS(first_pfn)) &&
- (kern_start < PFN_PHYS(max_pfn))) {
- printk("Node %u: Kernel image %08lx - %08lx\n",
- node, kern_start, kern_end);
- reserve_bootmem_node(NODE_DATA(node), kern_start,
- kern_end - kern_start);
- }
-
- /* ...the bootmem bitmap... */
- reserve_bootmem_node(NODE_DATA(node),
- PFN_PHYS(bootmap_pfn),
- bootmap_size);
-
- /* ...any RAMDISK images... */
- for (res = mem_ramdisk; res; res = res->next) {
- if (res->addr > PFN_PHYS(max_pfn))
- break;
-
- if (res->addr >= PFN_PHYS(first_pfn)) {
- printk("Node %u: RAMDISK %08lx - %08lx\n",
- node,
- (unsigned long)res->addr,
- (unsigned long)(res->addr + res->size));
- reserve_bootmem_node(NODE_DATA(node),
- res->addr, res->size);
- }
- }
-
- /* ...and any other reserved regions. */
- for (res = mem_reserved; res; res = res->next) {
- if (res->addr > PFN_PHYS(max_pfn))
- break;
-
- if (res->addr >= PFN_PHYS(first_pfn)) {
- printk("Node %u: Reserved %08lx - %08lx\n",
- node,
- (unsigned long)res->addr,
- (unsigned long)(res->addr + res->size));
- reserve_bootmem_node(NODE_DATA(node),
- res->addr, res->size);
- }
- }
-
- node_set_online(node);
- }
-}
-
/*
* paging_init() sets up the page tables
*
extern struct tag *bootloader_tags;
-extern void setup_bootmem(void);
extern void setup_processor(void);
extern void board_setup_fbmem(unsigned long fbmem_start,
unsigned long fbmem_size);
projects / linux-2.6 / commitdiff