diff options
Diffstat (limited to 'qemu/roms/ipxe/src/interface/efi/efi_init.c')
| -rw-r--r-- | qemu/roms/ipxe/src/interface/efi/efi_init.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/qemu/roms/ipxe/src/interface/efi/efi_init.c b/qemu/roms/ipxe/src/interface/efi/efi_init.c deleted file mode 100644 index 93ada21d4..000000000 --- a/qemu/roms/ipxe/src/interface/efi/efi_init.c +++ /dev/null @@ -1,226 +0,0 @@ -/* - * 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., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#include <string.h> -#include <errno.h> -#include <ipxe/init.h> -#include <ipxe/efi/efi.h> -#include <ipxe/efi/efi_driver.h> -#include <ipxe/efi/Protocol/LoadedImage.h> - -/** Image handle passed to entry point */ -EFI_HANDLE efi_image_handle; - -/** Loaded image protocol for this image */ -EFI_LOADED_IMAGE_PROTOCOL *efi_loaded_image; - -/** System table passed to entry point */ -EFI_SYSTEM_TABLE *efi_systab; - -/** Event used to signal shutdown */ -static EFI_EVENT efi_shutdown_event; - -/* Forward declarations */ -static EFI_STATUS EFIAPI efi_unload ( EFI_HANDLE image_handle ); - -/** - * Shut down in preparation for booting an OS. - * - * This hook gets called at ExitBootServices time in order to make - * sure that everything is properly shut down before the OS takes - * over. - */ -static EFIAPI void efi_shutdown_hook ( EFI_EVENT event __unused, - void *context __unused ) { - shutdown_boot(); -} - -/** - * Look up EFI configuration table - * - * @v guid Configuration table GUID - * @ret table Configuration table, or NULL - */ -static void * efi_find_table ( EFI_GUID *guid ) { - unsigned int i; - - for ( i = 0 ; i < efi_systab->NumberOfTableEntries ; i++ ) { - if ( memcmp ( &efi_systab->ConfigurationTable[i].VendorGuid, - guid, sizeof ( *guid ) ) == 0 ) - return efi_systab->ConfigurationTable[i].VendorTable; - } - - return NULL; -} - -/** - * Initialise EFI environment - * - * @v image_handle Image handle - * @v systab System table - * @ret efirc EFI return status code - */ -EFI_STATUS efi_init ( EFI_HANDLE image_handle, - EFI_SYSTEM_TABLE *systab ) { - EFI_BOOT_SERVICES *bs; - struct efi_protocol *prot; - struct efi_config_table *tab; - void *loaded_image; - EFI_STATUS efirc; - int rc; - - /* Store image handle and system table pointer for future use */ - efi_image_handle = image_handle; - efi_systab = systab; - - /* Sanity checks */ - if ( ! systab ) { - efirc = EFI_NOT_AVAILABLE_YET; - goto err_sanity; - } - if ( ! systab->ConOut ) { - efirc = EFI_NOT_AVAILABLE_YET; - goto err_sanity; - } - if ( ! systab->BootServices ) { - DBGC ( systab, "EFI provided no BootServices entry point\n" ); - efirc = EFI_NOT_AVAILABLE_YET; - goto err_sanity; - } - if ( ! systab->RuntimeServices ) { - DBGC ( systab, "EFI provided no RuntimeServices entry " - "point\n" ); - efirc = EFI_NOT_AVAILABLE_YET; - goto err_sanity; - } - DBGC ( systab, "EFI handle %p systab %p\n", image_handle, systab ); - bs = systab->BootServices; - - /* Look up used protocols */ - for_each_table_entry ( prot, EFI_PROTOCOLS ) { - if ( ( efirc = bs->LocateProtocol ( &prot->guid, NULL, - prot->protocol ) ) == 0 ) { - DBGC ( systab, "EFI protocol %s is at %p\n", - efi_guid_ntoa ( &prot->guid ), - *(prot->protocol) ); - } else { - DBGC ( systab, "EFI does not provide protocol %s\n", - efi_guid_ntoa ( &prot->guid ) ); - /* Fail if protocol is required */ - if ( prot->required ) - goto err_missing_protocol; - } - } - - /* Look up used configuration tables */ - for_each_table_entry ( tab, EFI_CONFIG_TABLES ) { - if ( ( *(tab->table) = efi_find_table ( &tab->guid ) ) ) { - DBGC ( systab, "EFI configuration table %s is at %p\n", - efi_guid_ntoa ( &tab->guid ), *(tab->table) ); - } else { - DBGC ( systab, "EFI does not provide configuration " - "table %s\n", efi_guid_ntoa ( &tab->guid ) ); - if ( tab->required ) { - efirc = EFI_NOT_AVAILABLE_YET; - goto err_missing_table; - } - } - } - - /* Get loaded image protocol */ - if ( ( efirc = bs->OpenProtocol ( image_handle, - &efi_loaded_image_protocol_guid, - &loaded_image, image_handle, NULL, - EFI_OPEN_PROTOCOL_GET_PROTOCOL ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( systab, "EFI could not get loaded image protocol: %s", - strerror ( rc ) ); - goto err_no_loaded_image; - } - efi_loaded_image = loaded_image; - DBGC ( systab, "EFI image base address %p\n", - efi_loaded_image->ImageBase ); - - /* EFI is perfectly capable of gracefully shutting down any - * loaded devices if it decides to fall back to a legacy boot. - * For no particularly comprehensible reason, it doesn't - * bother doing so when ExitBootServices() is called. - */ - if ( ( efirc = bs->CreateEvent ( EVT_SIGNAL_EXIT_BOOT_SERVICES, - TPL_CALLBACK, efi_shutdown_hook, - NULL, &efi_shutdown_event ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( systab, "EFI could not create ExitBootServices event: " - "%s\n", strerror ( rc ) ); - goto err_create_event; - } - - /* Install driver binding protocol */ - if ( ( rc = efi_driver_install() ) != 0 ) { - DBGC ( systab, "EFI could not install driver: %s\n", - strerror ( rc ) ); - efirc = EFIRC ( rc ); - goto err_driver_install; - } - - /* Install image unload method */ - efi_loaded_image->Unload = efi_unload; - - return 0; - - efi_driver_uninstall(); - err_driver_install: - bs->CloseEvent ( efi_shutdown_event ); - err_create_event: - err_no_loaded_image: - err_missing_table: - err_missing_protocol: - err_sanity: - return efirc; -} - -/** - * Shut down EFI environment - * - * @v image_handle Image handle - */ -static EFI_STATUS EFIAPI efi_unload ( EFI_HANDLE image_handle __unused ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - EFI_SYSTEM_TABLE *systab = efi_systab; - - DBGC ( systab, "EFI image unloading\n" ); - - /* Shut down */ - shutdown_exit(); - - /* Disconnect any remaining devices */ - efi_driver_disconnect_all(); - - /* Uninstall driver binding protocol */ - efi_driver_uninstall(); - - /* Uninstall exit boot services event */ - bs->CloseEvent ( efi_shutdown_event ); - - DBGC ( systab, "EFI image unloaded\n" ); - - return 0; -} |