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/* init.c - generic EFI initialization and finalization */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007 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/efi/efi.h>
#include <grub/efi/console.h>
#include <grub/efi/disk.h>
#include <grub/term.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/mm.h>
#include <grub/kernel.h>
void
grub_efi_init (void)
{
/* First of all, initialize the console so that GRUB can display
messages. */
grub_console_init ();
/* Initialize the memory management system. */
grub_efi_mm_init ();
efi_call_4 (grub_efi_system_table->boot_services->set_watchdog_timer,
0, 0, 0, NULL);
grub_efidisk_init ();
}
void
grub_efi_set_prefix (void)
{
grub_efi_loaded_image_t *image = NULL;
char *device = NULL;
char *path = NULL;
{
char *pptr = NULL;
if (grub_prefix[0] == '(')
{
pptr = grub_strrchr (grub_prefix, ')');
if (pptr)
{
device = grub_strndup (grub_prefix + 1, pptr - grub_prefix - 1);
pptr++;
}
}
if (!pptr)
pptr = grub_prefix;
if (pptr[0])
path = grub_strdup (pptr);
}
if ((!device || device[0] == ',' || !device[0]) || !path)
image = grub_efi_get_loaded_image (grub_efi_image_handle);
if (image)
{
if (!device)
device = grub_efidisk_get_device_name (image->device_handle);
else if (device[0] == ',' || !device[0])
{
/* We have a partition, but still need to fill in the drive. */
char *image_device, *comma, *new_device;
image_device = grub_efidisk_get_device_name (image->device_handle);
comma = grub_strchr (image_device, ',');
if (comma)
{
char *drive = grub_strndup (image_device, comma - image_device);
new_device = grub_xasprintf ("%s%s", drive, device);
grub_free (drive);
}
else
new_device = grub_xasprintf ("%s%s", image_device, device);
grub_free (image_device);
grub_free (device);
device = new_device;
}
}
if (image && !path)
{
char *p;
path = grub_efi_get_filename (image->file_path);
/* Get the directory. */
p = grub_strrchr (path, '/');
if (p)
*p = '\0';
}
if (device && path)
{
char *prefix;
prefix = grub_xasprintf ("(%s)%s", device, path);
if (prefix)
{
grub_env_set ("prefix", prefix);
grub_free (prefix);
}
}
grub_free (device);
grub_free (path);
}
void
grub_efi_fini (void)
{
grub_efidisk_fini ();
grub_console_fini ();
}
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