6fa6d6751d
starts with "(,", fill the drive containing the loaded image in between those two characters, but expect that a full partition specification including partition map names will follow.
130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/* init.c - generic EFI initialization and finalization */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007 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/efi/efi.h>
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#include <grub/efi/console.h>
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#include <grub/efi/disk.h>
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#include <grub/term.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/mm.h>
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#include <grub/kernel.h>
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void
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grub_efi_init (void)
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{
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/* First of all, initialize the console so that GRUB can display
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messages. */
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grub_console_init ();
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/* Initialize the memory management system. */
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grub_efi_mm_init ();
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efi_call_4 (grub_efi_system_table->boot_services->set_watchdog_timer,
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0, 0, 0, NULL);
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grub_efidisk_init ();
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}
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void
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grub_efi_set_prefix (void)
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{
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grub_efi_loaded_image_t *image = NULL;
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char *device = NULL;
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char *path = NULL;
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{
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char *pptr = NULL;
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if (grub_prefix[0] == '(')
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{
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pptr = grub_strrchr (grub_prefix, ')');
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if (pptr)
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{
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device = grub_strndup (grub_prefix + 1, pptr - grub_prefix - 1);
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pptr++;
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}
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}
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if (!pptr)
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pptr = grub_prefix;
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if (pptr[0])
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path = grub_strdup (pptr);
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}
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if ((!device || device[0] == ',' || !device[0]) || !path)
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image = grub_efi_get_loaded_image (grub_efi_image_handle);
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if (image)
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{
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if (!device)
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device = grub_efidisk_get_device_name (image->device_handle);
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else if (device[0] == ',' || !device[0])
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{
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/* We have a partition, but still need to fill in the drive. */
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char *image_device, *comma, *new_device;
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image_device = grub_efidisk_get_device_name (image->device_handle);
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comma = grub_strchr (image_device, ',');
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if (comma)
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{
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char *drive = grub_strndup (image_device, comma - image_device);
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new_device = grub_xasprintf ("%s%s", drive, device);
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grub_free (drive);
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}
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else
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new_device = grub_xasprintf ("%s%s", image_device, device);
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grub_free (image_device);
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grub_free (device);
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device = new_device;
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}
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}
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if (image && !path)
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{
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char *p;
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path = grub_efi_get_filename (image->file_path);
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/* Get the directory. */
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p = grub_strrchr (path, '/');
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if (p)
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*p = '\0';
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}
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if (device && path)
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{
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char *prefix;
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prefix = grub_xasprintf ("(%s)%s", device, path);
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if (prefix)
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{
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grub_env_set ("prefix", prefix);
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grub_free (prefix);
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}
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}
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grub_free (device);
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grub_free (path);
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}
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void
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grub_efi_fini (void)
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{
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grub_efidisk_fini ();
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grub_console_fini ();
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}
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