144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/* lsefimemmap.c - Display memory map. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/types.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/efi/api.h>
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#include <grub/efi/efi.h>
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#include <grub/command.h>
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#define ADD_MEMORY_DESCRIPTOR(desc, size) \
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((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size)))
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static grub_err_t
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grub_cmd_lsefimmap (grub_command_t cmd __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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grub_efi_uintn_t map_size;
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grub_efi_memory_descriptor_t *memory_map;
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grub_efi_memory_descriptor_t *memory_map_end;
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grub_efi_memory_descriptor_t *desc;
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grub_efi_uintn_t desc_size;
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map_size = 0;
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if (grub_efi_get_memory_map (&map_size, NULL, NULL, &desc_size, 0) < 0)
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return 0;
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memory_map = grub_malloc (map_size);
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if (memory_map == NULL)
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return grub_errno;
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if (grub_efi_get_memory_map (&map_size, memory_map, NULL, &desc_size, 0) <= 0)
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goto fail;
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grub_printf
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("Type Physical start - end #Pages "
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" Size Attributes\n");
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memory_map_end = ADD_MEMORY_DESCRIPTOR (memory_map, map_size);
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for (desc = memory_map;
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desc < memory_map_end;
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desc = ADD_MEMORY_DESCRIPTOR (desc, desc_size))
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{
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grub_efi_uint64_t size;
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grub_efi_uint64_t attr;
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static const char types_str[][9] =
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{
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"reserved",
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"ldr-code",
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"ldr-data",
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"BS-code ",
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"BS-data ",
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"RT-code ",
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"RT-data ",
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"conv-mem",
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"unusable",
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"ACPI-rec",
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"ACPI-nvs",
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"MMIO ",
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"IO-ports",
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"PAL-code"
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};
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if (desc->type < ARRAY_SIZE (types_str))
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grub_printf ("%s ", types_str[desc->type]);
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else
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grub_printf ("Unk %02x ", desc->type);
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grub_printf (" %016" PRIxGRUB_UINT64_T "-%016" PRIxGRUB_UINT64_T
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" %08" PRIxGRUB_EFI_UINTN_T,
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desc->physical_start,
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desc->physical_start + (desc->num_pages << 12) - 1,
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desc->num_pages);
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size = desc->num_pages;
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size <<= (12 - 10);
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if (size < 1024)
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grub_printf (" %4" PRIuGRUB_UINT64_T "KB", size);
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else
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{
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size /= 1024;
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if (size < 1024)
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grub_printf (" %4" PRIuGRUB_UINT64_T "MB", size);
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else
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{
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size /= 1024;
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grub_printf (" %4" PRIuGRUB_UINT64_T "GB", size);
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}
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}
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attr = desc->attribute;
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if (attr & GRUB_EFI_MEMORY_RUNTIME)
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grub_printf (" RT");
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if (attr & GRUB_EFI_MEMORY_UC)
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grub_printf (" UC");
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if (attr & GRUB_EFI_MEMORY_WC)
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grub_printf (" WC");
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if (attr & GRUB_EFI_MEMORY_WT)
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grub_printf (" WT");
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if (attr & GRUB_EFI_MEMORY_WB)
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grub_printf (" WB");
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if (attr & GRUB_EFI_MEMORY_UCE)
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grub_printf (" UCE");
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if (attr & GRUB_EFI_MEMORY_WP)
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grub_printf (" WP");
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if (attr & GRUB_EFI_MEMORY_RP)
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grub_printf (" RP");
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if (attr & GRUB_EFI_MEMORY_XP)
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grub_printf (" XP");
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grub_printf ("\n");
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}
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fail:
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grub_free (memory_map);
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return 0;
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}
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static grub_command_t cmd;
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GRUB_MOD_INIT(lsefimmap)
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{
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cmd = grub_register_command ("lsefimmap", grub_cmd_lsefimmap,
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"", "Display EFI memory map.");
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}
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GRUB_MOD_FINI(lsefimmap)
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{
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grub_unregister_command (cmd);
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}
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