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- /*
- * 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 () );
- }
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