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/* lsefimemmap.c - Display memory map. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/types.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efi/api.h>
#include <grub/efi/efi.h>
#include <grub/command.h>
GRUB_MOD_LICENSE ("GPLv3+");
#define ADD_MEMORY_DESCRIPTOR(desc, size) \
((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size)))
static grub_err_t
grub_cmd_lsefimmap (grub_command_t cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
{
grub_efi_uintn_t map_size;
grub_efi_memory_descriptor_t *memory_map;
grub_efi_memory_descriptor_t *memory_map_end;
grub_efi_memory_descriptor_t *desc;
grub_efi_uintn_t desc_size;
map_size = 0;
if (grub_efi_get_memory_map (&map_size, NULL, NULL, &desc_size, 0) < 0)
return 0;
memory_map = grub_malloc (map_size);
if (memory_map == NULL)
return grub_errno;
if (grub_efi_get_memory_map (&map_size, memory_map, NULL, &desc_size, 0) <= 0)
goto fail;
grub_printf
("Type Physical start - end #Pages "
" Size Attributes\n");
memory_map_end = ADD_MEMORY_DESCRIPTOR (memory_map, map_size);
for (desc = memory_map;
desc < memory_map_end;
desc = ADD_MEMORY_DESCRIPTOR (desc, desc_size))
{
grub_efi_uint64_t size;
grub_efi_uint64_t attr;
static const char types_str[][9] =
{
"reserved",
"ldr-code",
"ldr-data",
"BS-code ",
"BS-data ",
"RT-code ",
"RT-data ",
"conv-mem",
"unusable",
"ACPI-rec",
"ACPI-nvs",
"MMIO ",
"IO-ports",
"PAL-code"
};
if (desc->type < ARRAY_SIZE (types_str))
grub_printf ("%s ", types_str[desc->type]);
else
grub_printf ("Unk %02x ", desc->type);
grub_printf (" %016" PRIxGRUB_UINT64_T "-%016" PRIxGRUB_UINT64_T
" %08" PRIxGRUB_UINT64_T,
desc->physical_start,
desc->physical_start + (desc->num_pages << 12) - 1,
desc->num_pages);
size = desc->num_pages;
size <<= (12 - 10);
if (size < 1024)
grub_printf (" %4" PRIuGRUB_UINT64_T "KB", size);
else
{
size /= 1024;
if (size < 1024)
grub_printf (" %4" PRIuGRUB_UINT64_T "MB", size);
else
{
size /= 1024;
grub_printf (" %4" PRIuGRUB_UINT64_T "GB", size);
}
}
attr = desc->attribute;
if (attr & GRUB_EFI_MEMORY_RUNTIME)
grub_printf (" RT");
if (attr & GRUB_EFI_MEMORY_UC)
grub_printf (" UC");
if (attr & GRUB_EFI_MEMORY_WC)
grub_printf (" WC");
if (attr & GRUB_EFI_MEMORY_WT)
grub_printf (" WT");
if (attr & GRUB_EFI_MEMORY_WB)
grub_printf (" WB");
if (attr & GRUB_EFI_MEMORY_UCE)
grub_printf (" UCE");
if (attr & GRUB_EFI_MEMORY_WP)
grub_printf (" WP");
if (attr & GRUB_EFI_MEMORY_RP)
grub_printf (" RP");
if (attr & GRUB_EFI_MEMORY_XP)
grub_printf (" XP");
grub_printf ("\n");
}
fail:
grub_free (memory_map);
return 0;
}
static grub_command_t cmd;
GRUB_MOD_INIT(lsefimmap)
{
cmd = grub_register_command ("lsefimmap", grub_cmd_lsefimmap,
"", "Display EFI memory map.");
}
GRUB_MOD_FINI(lsefimmap)
{
grub_unregister_command (cmd);
}
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