diff options
Diffstat (limited to 'lib/efi_loader/efi_memory.c')
| -rw-r--r-- | lib/efi_loader/efi_memory.c | 65 |
1 files changed, 45 insertions, 20 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index ec66af98ea..967c3f733e 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -9,11 +9,14 @@ #include <efi_loader.h> #include <inttypes.h> #include <malloc.h> +#include <mapmem.h> #include <watchdog.h> #include <linux/list_sort.h> DECLARE_GLOBAL_DATA_PTR; +efi_uintn_t efi_memory_map_key; + struct efi_mem_list { struct list_head link; struct efi_mem_desc desc; @@ -159,9 +162,13 @@ uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type, debug("%s: 0x%" PRIx64 " 0x%" PRIx64 " %d %s\n", __func__, start, pages, memory_type, overlap_only_ram ? "yes" : "no"); + if (memory_type >= EFI_MAX_MEMORY_TYPE) + return EFI_INVALID_PARAMETER; + if (!pages) return start; + ++efi_memory_map_key; newlist = calloc(1, sizeof(*newlist)); newlist->desc.type = memory_type; newlist->desc.physical_start = start; @@ -292,10 +299,13 @@ efi_status_t efi_allocate_pages(int type, int memory_type, efi_status_t r = EFI_SUCCESS; uint64_t addr; + if (!memory) + return EFI_INVALID_PARAMETER; + switch (type) { case EFI_ALLOCATE_ANY_PAGES: /* Any page */ - addr = efi_find_free_memory(len, gd->start_addr_sp); + addr = efi_find_free_memory(len, -1ULL); if (!addr) { r = EFI_NOT_FOUND; break; @@ -325,7 +335,7 @@ efi_status_t efi_allocate_pages(int type, int memory_type, /* Reserve that map in our memory maps */ ret = efi_add_memory_map(addr, pages, memory_type, true); if (ret == addr) { - *memory = addr; + *memory = (uintptr_t)map_sysmem(addr, len); } else { /* Map would overlap, bail out */ r = EFI_OUT_OF_RESOURCES; @@ -359,11 +369,12 @@ void *efi_alloc(uint64_t len, int memory_type) efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages) { uint64_t r = 0; + uint64_t addr = map_to_sysmem((void *)(uintptr_t)memory); - r = efi_add_memory_map(memory, pages, EFI_CONVENTIONAL_MEMORY, false); + r = efi_add_memory_map(addr, pages, EFI_CONVENTIONAL_MEMORY, false); /* Merging of adjacent free regions is missing */ - if (r == memory) + if (r == addr) return EFI_SUCCESS; return EFI_NOT_FOUND; @@ -380,20 +391,22 @@ efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages) efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size, void **buffer) { efi_status_t r; - efi_physical_addr_t t; + struct efi_pool_allocation *alloc; u64 num_pages = (size + sizeof(struct efi_pool_allocation) + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT; + if (!buffer) + return EFI_INVALID_PARAMETER; + if (size == 0) { *buffer = NULL; return EFI_SUCCESS; } r = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES, pool_type, num_pages, - &t); + (uint64_t *)&alloc); if (r == EFI_SUCCESS) { - struct efi_pool_allocation *alloc = (void *)(uintptr_t)t; alloc->num_pages = num_pages; *buffer = alloc->data; } @@ -446,6 +459,9 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, struct list_head *lhandle; efi_uintn_t provided_map_size = *memory_map_size; + if (!memory_map_size) + return EFI_INVALID_PARAMETER; + list_for_each(lhandle, &efi_mem) map_entries++; @@ -456,6 +472,9 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, if (provided_map_size < map_size) return EFI_BUFFER_TOO_SMALL; + if (!memory_map) + return EFI_INVALID_PARAMETER; + if (descriptor_size) *descriptor_size = sizeof(struct efi_mem_desc); @@ -463,19 +482,18 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, *descriptor_version = EFI_MEMORY_DESCRIPTOR_VERSION; /* Copy list into array */ - if (memory_map) { - /* Return the list in ascending order */ - memory_map = &memory_map[map_entries - 1]; - list_for_each(lhandle, &efi_mem) { - struct efi_mem_list *lmem; + /* Return the list in ascending order */ + memory_map = &memory_map[map_entries - 1]; + list_for_each(lhandle, &efi_mem) { + struct efi_mem_list *lmem; - lmem = list_entry(lhandle, struct efi_mem_list, link); - *memory_map = lmem->desc; - memory_map--; - } + lmem = list_entry(lhandle, struct efi_mem_list, link); + *memory_map = lmem->desc; + memory_map--; } - *map_key = 0; + if (map_key) + *map_key = efi_memory_map_key; return EFI_SUCCESS; } @@ -496,14 +514,13 @@ __weak void efi_add_known_memory(void) } } -int efi_memory_init(void) +/* Add memory regions for U-Boot's memory and for the runtime services code */ +static void add_u_boot_and_runtime(void) { unsigned long runtime_start, runtime_end, runtime_pages; unsigned long uboot_start, uboot_pages; unsigned long uboot_stack_size = 16 * 1024 * 1024; - efi_add_known_memory(); - /* Add U-Boot */ uboot_start = (gd->start_addr_sp - uboot_stack_size) & ~EFI_PAGE_MASK; uboot_pages = (gd->ram_top - uboot_start) >> EFI_PAGE_SHIFT; @@ -516,6 +533,14 @@ int efi_memory_init(void) runtime_pages = (runtime_end - runtime_start) >> EFI_PAGE_SHIFT; efi_add_memory_map(runtime_start, runtime_pages, EFI_RUNTIME_SERVICES_CODE, false); +} + +int efi_memory_init(void) +{ + efi_add_known_memory(); + + if (!IS_ENABLED(CONFIG_SANDBOX)) + add_u_boot_and_runtime(); #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER /* Request a 32bit 64MB bounce buffer region */ |