Blame view
cmd/efi.c
6.34 KB
83d290c56 SPDX: Convert all... |
1 |
// SPDX-License-Identifier: GPL-2.0+ |
f1a0bafb5 efi: Add a comman... |
2 3 4 |
/* * (C) Copyright 2015 Google, Inc * Written by Simon Glass <sjg@chromium.org> |
f1a0bafb5 efi: Add a comman... |
5 6 7 8 9 10 11 |
*/ #include <common.h> #include <command.h> #include <efi.h> #include <errno.h> #include <malloc.h> |
8bef79bf3 common: Move sort... |
12 |
#include <sort.h> |
f1a0bafb5 efi: Add a comman... |
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
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 { |
9b89183b9 efi: Fix truncati... |
32 |
u64 val; |
f1a0bafb5 efi: Add a comman... |
33 34 |
const char *name; } mem_attr[] = { |
9b89183b9 efi: Fix truncati... |
35 36 37 38 39 40 41 42 |
{ EFI_MEMORY_UC, "uncached" }, { EFI_MEMORY_WC, "write-coalescing" }, { EFI_MEMORY_WT, "write-through" }, { EFI_MEMORY_WB, "write-back" }, { EFI_MEMORY_UCE, "uncached & exported" }, { EFI_MEMORY_WP, "write-protect" }, { EFI_MEMORY_RP, "read-protect" }, { EFI_MEMORY_XP, "execute-protect" }, |
c3a40cce2 efi: Add EFI_MEMO... |
43 44 45 |
{ EFI_MEMORY_NV, "non-volatile" }, { EFI_MEMORY_MORE_RELIABLE, "higher reliability" }, { EFI_MEMORY_RO, "read-only" }, |
9b89183b9 efi: Fix truncati... |
46 |
{ EFI_MEMORY_RUNTIME, "needs runtime mapping" } |
f1a0bafb5 efi: Add a comman... |
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 |
}; /* 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 ", __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; |
dd099ec44 cmd: efi: Fix wro... |
91 |
end = (struct efi_mem_desc *)((ulong)base + count * map->desc_size); |
f1a0bafb5 efi: Add a comman... |
92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 |
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 ", "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 ", "<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(' '); 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(" Attributes key: "); for (i = 0; i < attr_seen_count; i++) { u64 attr = attr_seen[i]; bool first; int j; |
dbb148b22 cmd: efi: Clarify... |
182 |
printf("%c%llx: ", (attr & EFI_MEMORY_RUNTIME) ? 'r' : ' ', |
f1a0bafb5 efi: Add a comman... |
183 184 |
attr & ~EFI_MEMORY_RUNTIME); for (j = 0, first = true; j < ARRAY_SIZE(mem_attr); j++) { |
9b89183b9 efi: Fix truncati... |
185 |
if (attr & mem_attr[j].val) { |
f1a0bafb5 efi: Add a comman... |
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 |
if (first) first = false; else printf(", "); printf("%s", mem_attr[j].name); } } putc(' '); } if (skip_bs) printf("*Some areas are merged (use 'all' to see) "); } 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 "); goto done; case -EPROTONOSUPPORT: printf("Incorrect EFI table version "); goto done; } printf("EFI table at %lx, memory map %p, size %x, version %x, descr. size %#x ", gd->arch.table, map, size, map->version, map->desc_size); if (map->version != EFI_MEM_DESC_VERSION) { printf("Incorrect memory map version "); 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 ", 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]" ); |