/* * Copyright (C) 2008 Michael Brown . * * 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 #include #include /** 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 () ); }