sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-28 02:28:57 +03:00
Code Issues Packages Projects Releases Wiki Activity

[efi] Add EFI image format and basic runtime environment

Browse Source 
We have EFI APIs for CPU I/O, PCI I/O, timers, console I/O, user
access and user memory allocation.

EFI executables are created using the vanilla GNU toolchain, with the
EXE header handcrafted in assembly and relocations generated by a
custom efilink utility.
This commit is contained in:
Michael Brown
2008-10-12 01:55:55 +01:00
parent 54c024e0af
commit 81d92c6d34
40 changed files with 4781 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
src/interface/efi/efi_entry.c Normal file
View File

@@ -0,0 +1,83 @@
/*
* Copyright (C) 2008 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <gpxe/efi/efi.h>
#include <gpxe/uuid.h>
/** Image handle passed to entry point */
EFI_HANDLE efi_image_handle;
/** System table passed to entry point */
EFI_SYSTEM_TABLE *efi_systab;
/** Declared used EFI protocols */
static struct efi_protocol efi_protocols[0] \
__table_start ( struct efi_protocol, efi_protocols );
static struct efi_protocol efi_protocols_end[0] \
__table_end ( struct efi_protocol, efi_protocols );
/**
* EFI entry point
*
* @v image_handle Image handle
* @v systab System table
* @ret efirc EFI return status code
*/
EFI_STATUS EFIAPI efi_entry ( EFI_HANDLE image_handle,
EFI_SYSTEM_TABLE *systab ) {
EFI_BOOT_SERVICES *bs;
struct efi_protocol *prot;
EFI_STATUS efirc;
/* Store image handle and system table pointer for future use */
efi_image_handle = image_handle;
efi_systab = systab;
/* Sanity checks */
if ( ! systab )
return EFI_NOT_AVAILABLE_YET;
if ( ! systab->ConOut )
return EFI_NOT_AVAILABLE_YET;
if ( ! systab->BootServices ) {
DBGC ( systab, "EFI provided no BootServices entry point\n" );
return EFI_NOT_AVAILABLE_YET;
}
if ( ! systab->RuntimeServices ) {
DBGC ( systab, "EFI provided no RuntimeServices entry "
"point\n" );
return EFI_NOT_AVAILABLE_YET;
}
DBGC ( systab, "EFI handle %p systab %p\n", image_handle, systab );
/* Look up required protocols */
bs = systab->BootServices;
for ( prot = efi_protocols ; prot < efi_protocols_end ; prot++ ) {
if ( ( efirc = bs->LocateProtocol ( &prot->u.guid, NULL,
prot->protocol ) ) != 0 ) {
DBGC ( systab, "EFI does not provide protocol %s\n",
uuid_ntoa ( &prot->u.uuid ) );
return efirc;
}
DBGC ( systab, "EFI protocol %s is at %p\n",
uuid_ntoa ( &prot->u.uuid ), *(prot->protocol) );
}
/* Call to main() */
return RC_TO_EFIRC ( main () );
}