diff options
| -rw-r--r-- | arch/i386/kernel/e820.c | 52 | ||||
| -rw-r--r-- | arch/i386/kernel/setup.c | 55 | ||||
| -rw-r--r-- | include/asm-i386/e820.h | 1 |
3 files changed, 53 insertions, 55 deletions
diff --git a/arch/i386/kernel/e820.c b/arch/i386/kernel/e820.c index 0db95760b073..be4934f6f85b 100644 --- a/arch/i386/kernel/e820.c +++ b/arch/i386/kernel/e820.c @@ -8,6 +8,7 @@ #include <linux/module.h> #include <linux/mm.h> #include <linux/efi.h> +#include <linux/pfn.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -539,3 +540,54 @@ int __init copy_e820_map(struct e820entry * biosmap, int nr_map) return 0; } +/* + * Callback for efi_memory_walk. + */ +static int __init +efi_find_max_pfn(unsigned long start, unsigned long end, void *arg) +{ + unsigned long *max_pfn = arg, pfn; + + if (start < end) { + pfn = PFN_UP(end -1); + if (pfn > *max_pfn) + *max_pfn = pfn; + } + return 0; +} + +static int __init +efi_memory_present_wrapper(unsigned long start, unsigned long end, void *arg) +{ + memory_present(0, PFN_UP(start), PFN_DOWN(end)); + return 0; +} + +/* + * Find the highest page frame number we have available + */ +void __init find_max_pfn(void) +{ + int i; + + max_pfn = 0; + if (efi_enabled) { + efi_memmap_walk(efi_find_max_pfn, &max_pfn); + efi_memmap_walk(efi_memory_present_wrapper, NULL); + return; + } + + for (i = 0; i < e820.nr_map; i++) { + unsigned long start, end; + /* RAM? */ + if (e820.map[i].type != E820_RAM) + continue; + start = PFN_UP(e820.map[i].addr); + end = PFN_DOWN(e820.map[i].addr + e820.map[i].size); + if (start >= end) + continue; + if (end > max_pfn) + max_pfn = end; + memory_present(0, start, end); + } +} diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index b7509aec0eb1..3d808054fdf7 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -63,9 +63,6 @@ #include <setup_arch.h> #include <bios_ebda.h> -/* Forward Declaration. */ -void __init find_max_pfn(void); - /* This value is set up by the early boot code to point to the value immediately after the boot time page tables. It contains a *physical* address, and must not be in the .bss segment! */ @@ -387,29 +384,6 @@ static int __init parse_reservetop(char *arg) } early_param("reservetop", parse_reservetop); -/* - * Callback for efi_memory_walk. - */ -static int __init -efi_find_max_pfn(unsigned long start, unsigned long end, void *arg) -{ - unsigned long *max_pfn = arg, pfn; - - if (start < end) { - pfn = PFN_UP(end -1); - if (pfn > *max_pfn) - *max_pfn = pfn; - } - return 0; -} - -static int __init -efi_memory_present_wrapper(unsigned long start, unsigned long end, void *arg) -{ - memory_present(0, PFN_UP(start), PFN_DOWN(end)); - return 0; -} - /* * This function checks if the entire range <start,end> is mapped with type. * @@ -443,35 +417,6 @@ e820_all_mapped(unsigned long s, unsigned long e, unsigned type) } /* - * Find the highest page frame number we have available - */ -void __init find_max_pfn(void) -{ - int i; - - max_pfn = 0; - if (efi_enabled) { - efi_memmap_walk(efi_find_max_pfn, &max_pfn); - efi_memmap_walk(efi_memory_present_wrapper, NULL); - return; - } - - for (i = 0; i < e820.nr_map; i++) { - unsigned long start, end; - /* RAM? */ - if (e820.map[i].type != E820_RAM) - continue; - start = PFN_UP(e820.map[i].addr); - end = PFN_DOWN(e820.map[i].addr + e820.map[i].size); - if (start >= end) - continue; - if (end > max_pfn) - max_pfn = end; - memory_present(0, start, end); - } -} - -/* * Determine low and high memory ranges: */ unsigned long __init find_max_low_pfn(void) diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h index f7514fb6e8e4..147569425152 100644 --- a/include/asm-i386/e820.h +++ b/include/asm-i386/e820.h @@ -38,6 +38,7 @@ extern struct e820map e820; extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type); +extern void find_max_pfn(void); #endif/*!__ASSEMBLY__*/ |