diff options
Diffstat (limited to 'lib/efi_loader/efi_memory.c')
| -rw-r--r-- | lib/efi_loader/efi_memory.c | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index 664c651db56..ec66af98ea8 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -10,7 +10,6 @@ #include <inttypes.h> #include <malloc.h> #include <watchdog.h> -#include <asm/global_data.h> #include <linux/list_sort.h> DECLARE_GLOBAL_DATA_PTR; @@ -69,23 +68,27 @@ static void efi_mem_sort(void) list_sort(NULL, &efi_mem, efi_mem_cmp); } -/* - * Unmaps all memory occupied by the carve_desc region from the - * list entry pointed to by map. +/** efi_mem_carve_out - unmap memory region + * + * @map: memory map + * @carve_desc: memory region to unmap + * @overlap_only_ram: the carved out region may only overlap RAM + * Return Value: the number of overlapping pages which have been + * removed from the map, + * EFI_CARVE_NO_OVERLAP, if the regions don't overlap, + * EFI_CARVE_OVERLAPS_NONRAM, if the carve and map overlap, + * and the map contains anything but free ram + * (only when overlap_only_ram is true), + * EFI_CARVE_LOOP_AGAIN, if the mapping list should be + * traversed again, as it has been altered. * - * Returns EFI_CARVE_NO_OVERLAP if the regions don't overlap. - * Returns EFI_CARVE_OVERLAPS_NONRAM if the carve and map overlap, - * and the map contains anything but free ram. - * (only when overlap_only_ram is true) - * Returns EFI_CARVE_LOOP_AGAIN if the mapping list should be traversed - * again, as it has been altered - * Returns the number of overlapping pages. The pages are removed from - * the mapping list. + * Unmaps all memory occupied by the carve_desc region from the list entry + * pointed to by map. * * In case of EFI_CARVE_OVERLAPS_NONRAM it is the callers responsibility - * to readd the already carved out pages to the mapping. + * to re-add the already carved out pages to the mapping. */ -static int efi_mem_carve_out(struct efi_mem_list *map, +static s64 efi_mem_carve_out(struct efi_mem_list *map, struct efi_mem_desc *carve_desc, bool overlap_only_ram) { @@ -184,7 +187,7 @@ uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type, carve_again = false; list_for_each(lhandle, &efi_mem) { struct efi_mem_list *lmem; - int r; + s64 r; lmem = list_entry(lhandle, struct efi_mem_list, link); r = efi_mem_carve_out(lmem, &newlist->desc, @@ -338,7 +341,8 @@ void *efi_alloc(uint64_t len, int memory_type) uint64_t pages = (len + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT; efi_status_t r; - r = efi_allocate_pages(0, memory_type, pages, &ret); + r = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES, memory_type, pages, + &ret); if (r == EFI_SUCCESS) return (void*)(uintptr_t)ret; @@ -385,7 +389,8 @@ efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size, void **buffer) return EFI_SUCCESS; } - r = efi_allocate_pages(0, pool_type, num_pages, &t); + r = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES, pool_type, num_pages, + &t); if (r == EFI_SUCCESS) { struct efi_pool_allocation *alloc = (void *)(uintptr_t)t; @@ -516,7 +521,7 @@ int efi_memory_init(void) /* Request a 32bit 64MB bounce buffer region */ uint64_t efi_bounce_buffer_addr = 0xffffffff; - if (efi_allocate_pages(1, EFI_LOADER_DATA, + if (efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS, EFI_LOADER_DATA, (64 * 1024 * 1024) >> EFI_PAGE_SHIFT, &efi_bounce_buffer_addr) != EFI_SUCCESS) return -1; |