diff options
Diffstat (limited to 'common/cmd_efi.c')
| -rw-r--r-- | common/cmd_efi.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/common/cmd_efi.c b/common/cmd_efi.c deleted file mode 100644 index c76296e725..0000000000 --- a/common/cmd_efi.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * (C) Copyright 2015 Google, Inc - * Written by Simon Glass <sjg@chromium.org> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <command.h> -#include <efi.h> -#include <errno.h> -#include <malloc.h> - -static const char *const type_name[] = { - "reserved", - "loader_code", - "loader_data", - "bs_code", - "bs_data", - "rt_code", - "rt_data", - "conv", - "unusable", - "acpi_reclaim", - "acpi_nvs", - "io", - "io_port", - "pal_code", -}; - -static struct attr_info { - int shift; - const char *name; -} mem_attr[] = { - { EFI_MEMORY_UC_SHIFT, "uncached" }, - { EFI_MEMORY_WC_SHIFT, "write-coalescing" }, - { EFI_MEMORY_WT_SHIFT, "write-through" }, - { EFI_MEMORY_WB_SHIFT, "write-back" }, - { EFI_MEMORY_UCE_SHIFT, "uncached & exported" }, - { EFI_MEMORY_WP_SHIFT, "write-protect" }, - { EFI_MEMORY_RP_SHIFT, "read-protect" }, - { EFI_MEMORY_XP_SHIFT, "execute-protect" }, - { EFI_MEMORY_RUNTIME_SHIFT, "needs runtime mapping" } -}; - -/* Maximum different attribute values we can track */ -#define ATTR_SEEN_MAX 30 - -static inline bool is_boot_services(int type) -{ - return type == EFI_LOADER_CODE || type == EFI_LOADER_DATA || - type == EFI_BOOT_SERVICES_CODE || - type == EFI_BOOT_SERVICES_DATA; -} - -static int h_cmp_entry(const void *v1, const void *v2) -{ - const struct efi_mem_desc *desc1 = v1; - const struct efi_mem_desc *desc2 = v2; - int64_t diff = desc1->physical_start - desc2->physical_start; - - /* - * Manually calculate the difference to avoid sign loss in the 64-bit - * to 32-bit conversion - */ - return diff < 0 ? -1 : diff > 0 ? 1 : 0; -} - -void *efi_build_mem_table(struct efi_entry_memmap *map, int size, bool skip_bs) -{ - struct efi_mem_desc *desc, *end, *base, *dest, *prev; - int count; - u64 addr; - - base = malloc(size + sizeof(*desc)); - if (!base) { - debug("%s: Cannot allocate %#x bytes\n", __func__, size); - return NULL; - } - end = (struct efi_mem_desc *)((ulong)map + size); - count = ((ulong)end - (ulong)map->desc) / map->desc_size; - memcpy(base, map->desc, (ulong)end - (ulong)map->desc); - qsort(base, count, map->desc_size, h_cmp_entry); - prev = NULL; - addr = 0; - dest = base; - end = base + count; - for (desc = base; desc < end; desc = efi_get_next_mem_desc(map, desc)) { - bool merge = true; - int type = desc->type; - - if (skip_bs && is_boot_services(desc->type)) - type = EFI_CONVENTIONAL_MEMORY; - - memcpy(dest, desc, map->desc_size); - dest->type = type; - if (!skip_bs || !prev) - merge = false; - else if (desc->physical_start != addr) - merge = false; - else if (type != EFI_CONVENTIONAL_MEMORY) - merge = false; - else if (prev->type != EFI_CONVENTIONAL_MEMORY) - merge = false; - - if (merge) { - prev->num_pages += desc->num_pages; - } else { - prev = dest; - dest = efi_get_next_mem_desc(map, dest); - } - addr = desc->physical_start + (desc->num_pages << - EFI_PAGE_SHIFT); - } - - /* Mark the end */ - dest->type = EFI_TABLE_END; - - return base; -} - -static void efi_print_mem_table(struct efi_entry_memmap *map, - struct efi_mem_desc *desc, bool skip_bs) -{ - u64 attr_seen[ATTR_SEEN_MAX]; - int attr_seen_count; - int upto, i; - u64 addr; - - printf(" # %-14s %10s %10s %10s %s\n", "Type", "Physical", - "Virtual", "Size", "Attributes"); - - /* Keep track of all the different attributes we have seen */ - attr_seen_count = 0; - addr = 0; - for (upto = 0; desc->type != EFI_TABLE_END; - upto++, desc = efi_get_next_mem_desc(map, desc)) { - const char *name; - u64 size; - - if (skip_bs && is_boot_services(desc->type)) - continue; - if (desc->physical_start != addr) { - printf(" %-14s %010llx %10s %010llx\n", "<gap>", - addr, "", desc->physical_start - addr); - } - size = desc->num_pages << EFI_PAGE_SHIFT; - - name = desc->type < ARRAY_SIZE(type_name) ? - type_name[desc->type] : "<invalid>"; - printf("%2d %x:%-12s %010llx %010llx %010llx ", upto, - desc->type, name, desc->physical_start, - desc->virtual_start, size); - if (desc->attribute & EFI_MEMORY_RUNTIME) - putc('r'); - printf("%llx", desc->attribute & ~EFI_MEMORY_RUNTIME); - putc('\n'); - - for (i = 0; i < attr_seen_count; i++) { - if (attr_seen[i] == desc->attribute) - break; - } - if (i == attr_seen_count && i < ATTR_SEEN_MAX) - attr_seen[attr_seen_count++] = desc->attribute; - addr = desc->physical_start + size; - } - - printf("\nAttributes key:\n"); - for (i = 0; i < attr_seen_count; i++) { - u64 attr = attr_seen[i]; - bool first; - int j; - - printf("%c%llx: ", attr & EFI_MEMORY_RUNTIME ? 'r' : ' ', - attr & ~EFI_MEMORY_RUNTIME); - for (j = 0, first = true; j < ARRAY_SIZE(mem_attr); j++) { - if (attr & (1ULL << mem_attr[j].shift)) { - if (first) - first = false; - else - printf(", "); - printf("%s", mem_attr[j].name); - } - } - putc('\n'); - } - if (skip_bs) - printf("*Some areas are merged (use 'all' to see)\n"); -} - -static int do_efi_mem(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - struct efi_mem_desc *desc; - struct efi_entry_memmap *map; - int size, ret; - bool skip_bs; - - skip_bs = !argc || *argv[0] != 'a'; - ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size); - switch (ret) { - case -ENOENT: - printf("No EFI table available\n"); - goto done; - case -EPROTONOSUPPORT: - printf("Incorrect EFI table version\n"); - goto done; - } - printf("EFI table at %lx, memory map %p, size %x, version %x, descr. size %#x\n", - gd->arch.table, map, size, map->version, map->desc_size); - if (map->version != EFI_MEM_DESC_VERSION) { - printf("Incorrect memory map version\n"); - ret = -EPROTONOSUPPORT; - goto done; - } - - desc = efi_build_mem_table(map, size, skip_bs); - if (!desc) { - ret = -ENOMEM; - goto done; - } - - efi_print_mem_table(map, desc, skip_bs); - free(desc); -done: - if (ret) - printf("Error: %d\n", ret); - - return ret ? CMD_RET_FAILURE : 0; -} - -static cmd_tbl_t efi_commands[] = { - U_BOOT_CMD_MKENT(mem, 1, 1, do_efi_mem, "", ""), -}; - -static int do_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - cmd_tbl_t *efi_cmd; - int ret; - - if (argc < 2) - return CMD_RET_USAGE; - efi_cmd = find_cmd_tbl(argv[1], efi_commands, ARRAY_SIZE(efi_commands)); - argc -= 2; - argv += 2; - if (!efi_cmd || argc > efi_cmd->maxargs) - return CMD_RET_USAGE; - - ret = efi_cmd->cmd(efi_cmd, flag, argc, argv); - - return cmd_process_error(efi_cmd, ret); -} - -U_BOOT_CMD( - efi, 3, 1, do_efi, - "EFI access", - "mem [all] Dump memory information [include boot services]" -); |
