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Diffstat (limited to 'arch/sparc/mm/init_32.c')
-rw-r--r--arch/sparc/mm/init_32.c127
1 files changed, 48 insertions, 79 deletions
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 95fe4f081ba3..92634d4e440c 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/highmem.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/pagemap.h>
#include <linux/poison.h>
#include <linux/gfp.h>
@@ -101,13 +102,46 @@ static unsigned long calc_max_low_pfn(void)
return tmp;
}
+static void __init find_ramdisk(unsigned long end_of_phys_memory)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+ unsigned long size;
+
+ /* Now have to check initial ramdisk, so that it won't pass
+ * the end of memory
+ */
+ if (sparc_ramdisk_image) {
+ if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
+ sparc_ramdisk_image -= KERNBASE;
+ initrd_start = sparc_ramdisk_image + phys_base;
+ initrd_end = initrd_start + sparc_ramdisk_size;
+ if (initrd_end > end_of_phys_memory) {
+ printk(KERN_CRIT "initrd extends beyond end of memory "
+ "(0x%016lx > 0x%016lx)\ndisabling initrd\n",
+ initrd_end, end_of_phys_memory);
+ initrd_start = 0;
+ } else {
+ /* Reserve the initrd image area. */
+ size = initrd_end - initrd_start;
+ memblock_reserve(initrd_start, size);
+
+ initrd_start = (initrd_start - phys_base) + PAGE_OFFSET;
+ initrd_end = (initrd_end - phys_base) + PAGE_OFFSET;
+ }
+ }
+#endif
+}
+
unsigned long __init bootmem_init(unsigned long *pages_avail)
{
- unsigned long bootmap_size, start_pfn;
- unsigned long end_of_phys_memory = 0UL;
- unsigned long bootmap_pfn, bytes_avail, size;
+ unsigned long start_pfn, bytes_avail, size;
+ unsigned long end_of_phys_memory = 0;
+ unsigned long high_pages = 0;
int i;
+ memblock_set_bottom_up(true);
+ memblock_allow_resize();
+
bytes_avail = 0UL;
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
end_of_phys_memory = sp_banks[i].base_addr +
@@ -124,24 +158,25 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
if (sp_banks[i].num_bytes == 0) {
sp_banks[i].base_addr = 0xdeadbeef;
} else {
+ memblock_add(sp_banks[i].base_addr,
+ sp_banks[i].num_bytes);
sp_banks[i+1].num_bytes = 0;
sp_banks[i+1].base_addr = 0xdeadbeef;
}
break;
}
}
+ memblock_add(sp_banks[i].base_addr, sp_banks[i].num_bytes);
}
/* Start with page aligned address of last symbol in kernel
- * image.
+ * image.
*/
start_pfn = (unsigned long)__pa(PAGE_ALIGN((unsigned long) &_end));
/* Now shift down to get the real physical page frame number. */
start_pfn >>= PAGE_SHIFT;
- bootmap_pfn = start_pfn;
-
max_pfn = end_of_phys_memory >> PAGE_SHIFT;
max_low_pfn = max_pfn;
@@ -150,85 +185,19 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
if (max_low_pfn > pfn_base + (SRMMU_MAXMEM >> PAGE_SHIFT)) {
highstart_pfn = pfn_base + (SRMMU_MAXMEM >> PAGE_SHIFT);
max_low_pfn = calc_max_low_pfn();
+ high_pages = calc_highpages();
printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
- calc_highpages() >> (20 - PAGE_SHIFT));
+ high_pages >> (20 - PAGE_SHIFT));
}
-#ifdef CONFIG_BLK_DEV_INITRD
- /* Now have to check initial ramdisk, so that bootmap does not overwrite it */
- if (sparc_ramdisk_image) {
- if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
- sparc_ramdisk_image -= KERNBASE;
- initrd_start = sparc_ramdisk_image + phys_base;
- initrd_end = initrd_start + sparc_ramdisk_size;
- if (initrd_end > end_of_phys_memory) {
- printk(KERN_CRIT "initrd extends beyond end of memory "
- "(0x%016lx > 0x%016lx)\ndisabling initrd\n",
- initrd_end, end_of_phys_memory);
- initrd_start = 0;
- }
- if (initrd_start) {
- if (initrd_start >= (start_pfn << PAGE_SHIFT) &&
- initrd_start < (start_pfn << PAGE_SHIFT) + 2 * PAGE_SIZE)
- bootmap_pfn = PAGE_ALIGN (initrd_end) >> PAGE_SHIFT;
- }
- }
-#endif
- /* Initialize the boot-time allocator. */
- bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn, pfn_base,
- max_low_pfn);
-
- /* Now register the available physical memory with the
- * allocator.
- */
- *pages_avail = 0;
- for (i = 0; sp_banks[i].num_bytes != 0; i++) {
- unsigned long curr_pfn, last_pfn;
+ find_ramdisk(end_of_phys_memory);
- curr_pfn = sp_banks[i].base_addr >> PAGE_SHIFT;
- if (curr_pfn >= max_low_pfn)
- break;
-
- last_pfn = (sp_banks[i].base_addr + sp_banks[i].num_bytes) >> PAGE_SHIFT;
- if (last_pfn > max_low_pfn)
- last_pfn = max_low_pfn;
-
- /*
- * .. finally, did all the rounding and playing
- * around just make the area go away?
- */
- if (last_pfn <= curr_pfn)
- continue;
-
- size = (last_pfn - curr_pfn) << PAGE_SHIFT;
- *pages_avail += last_pfn - curr_pfn;
-
- free_bootmem(sp_banks[i].base_addr, size);
- }
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if (initrd_start) {
- /* Reserve the initrd image area. */
- size = initrd_end - initrd_start;
- reserve_bootmem(initrd_start, size, BOOTMEM_DEFAULT);
- *pages_avail -= PAGE_ALIGN(size) >> PAGE_SHIFT;
-
- initrd_start = (initrd_start - phys_base) + PAGE_OFFSET;
- initrd_end = (initrd_end - phys_base) + PAGE_OFFSET;
- }
-#endif
/* Reserve the kernel text/data/bss. */
size = (start_pfn << PAGE_SHIFT) - phys_base;
- reserve_bootmem(phys_base, size, BOOTMEM_DEFAULT);
- *pages_avail -= PAGE_ALIGN(size) >> PAGE_SHIFT;
+ memblock_reserve(phys_base, size);
- /* Reserve the bootmem map. We do not account for it
- * in pages_avail because we will release that memory
- * in free_all_bootmem.
- */
- size = bootmap_size;
- reserve_bootmem((bootmap_pfn << PAGE_SHIFT), size, BOOTMEM_DEFAULT);
- *pages_avail -= PAGE_ALIGN(size) >> PAGE_SHIFT;
+ size = memblock_phys_mem_size() - memblock_reserved_size();
+ *pages_avail = (size >> PAGE_SHIFT) - high_pages;
return max_pfn;
}
@@ -322,7 +291,7 @@ void __init mem_init(void)
map_high_region(start_pfn, end_pfn);
}
-
+
mem_init_print_info(NULL);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 14:46:48 +0300