blob: 9ca54ff4f27c1317e51fb84aec64adbc0f06e019 [file] [log] [blame]
/*
* Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program 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 2 of the
* License, or any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdlib.h>
#include <ipxe/init.h>
#include <ipxe/device.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_driver.h>
/**
* EFI entry point
*
* @v image_handle Image handle
* @v systab System table
* @ret efirc EFI return status code
*/
EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle,
EFI_SYSTEM_TABLE *systab ) {
static struct efi_saved_tpl tpl; /* avoid triggering stack protector */
EFI_STATUS efirc;
/* Initialise stack cookie */
efi_init_stack_guard ( image_handle );
/* Initialise EFI environment */
if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
return efirc;
/* Raise TPL */
efi_raise_tpl ( &tpl );
/* Initialise iPXE environment */
initialise();
startup();
/* Restore TPL */
efi_restore_tpl ( &tpl );
return 0;
}
/**
* Probe EFI root bus
*
* @v rootdev EFI root device
*/
static int efi_probe ( struct root_device *rootdev __unused ) {
/* Do nothing */
return 0;
}
/**
* Remove EFI root bus
*
* @v rootdev EFI root device
*/
static void efi_remove ( struct root_device *rootdev __unused ) {
efi_driver_disconnect_all();
}
/** EFI root device driver */
static struct root_driver efi_root_driver = {
.probe = efi_probe,
.remove = efi_remove,
};
/** EFI root device */
struct root_device efi_root_device __root_device = {
.dev = { .name = "EFI" },
.driver = &efi_root_driver,
};