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/* loader.h - OS loaders */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004,2006,2007,2009 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/>.
*/
#ifndef GRUB_LOADER_HEADER
#define GRUB_LOADER_HEADER 1
#include <grub/file.h>
#include <grub/symbol.h>
#include <grub/err.h>
#include <grub/types.h>
/* Check if a loader is loaded. */
int EXPORT_FUNC (grub_loader_is_loaded) (void);
/* Set loader functions. */
enum
{
GRUB_LOADER_FLAG_NORETURN = 1,
GRUB_LOADER_FLAG_PXE_NOT_UNLOAD = 2,
GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY = 4,
};
void EXPORT_FUNC (grub_loader_set) (grub_err_t (*boot) (void),
grub_err_t (*unload) (void),
int flags);
/* Unset current loader, if any. */
void EXPORT_FUNC (grub_loader_unset) (void);
/* Call the boot hook in current loader. This may or may not return,
depending on the setting by grub_loader_set. */
grub_err_t grub_loader_boot (void);
/* The space between numbers is intentional for the simplicity of adding new
values even if external modules use them. */
typedef enum {
/* A preboot hook which can use everything and turns nothing off. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_NORMAL = 400,
/* A preboot hook which can't use disks and may stop disks. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_DISK = 300,
/* A preboot hook which can't use disks or console and may stop console. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_CONSOLE = 200,
/* A preboot hook which can't use disks or console, can't modify memory map
and may stop memory services or finalize memory map. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_MEMORY = 100,
} grub_loader_preboot_hook_prio_t;
/* Register a preboot hook. */
struct grub_preboot;
struct grub_preboot *EXPORT_FUNC(grub_loader_register_preboot_hook) (grub_err_t (*preboot_func) (int noret),
grub_err_t (*preboot_rest_func) (void),
grub_loader_preboot_hook_prio_t prio);
/* Unregister given preboot hook. */
void EXPORT_FUNC (grub_loader_unregister_preboot_hook) (struct grub_preboot *hnd);
#ifndef GRUB_MACHINE_EMU
void grub_boot_init (void);
void grub_boot_fini (void);
#endif
#endif /* ! GRUB_LOADER_HEADER */
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