diff options
Diffstat (limited to 'qemu/roms/ipxe/src/image/efi_image.c')
| -rw-r--r-- | qemu/roms/ipxe/src/image/efi_image.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/qemu/roms/ipxe/src/image/efi_image.c b/qemu/roms/ipxe/src/image/efi_image.c deleted file mode 100644 index b7d8f9c6e..000000000 --- a/qemu/roms/ipxe/src/image/efi_image.c +++ /dev/null @@ -1,316 +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 <errno.h> -#include <stdlib.h> -#include <wchar.h> -#include <ipxe/efi/efi.h> -#include <ipxe/efi/efi_snp.h> -#include <ipxe/efi/efi_download.h> -#include <ipxe/efi/efi_file.h> -#include <ipxe/efi/efi_utils.h> -#include <ipxe/efi/efi_strings.h> -#include <ipxe/efi/efi_wrap.h> -#include <ipxe/image.h> -#include <ipxe/init.h> -#include <ipxe/features.h> -#include <ipxe/uri.h> - -FEATURE ( FEATURE_IMAGE, "EFI", DHCP_EB_FEATURE_EFI, 1 ); - -/* Disambiguate the various error causes */ -#define EINFO_EEFI_LOAD \ - __einfo_uniqify ( EINFO_EPLATFORM, 0x01, \ - "Could not load image" ) -#define EINFO_EEFI_LOAD_PROHIBITED \ - __einfo_platformify ( EINFO_EEFI_LOAD, EFI_SECURITY_VIOLATION, \ - "Image prohibited by security policy" ) -#define EEFI_LOAD_PROHIBITED \ - __einfo_error ( EINFO_EEFI_LOAD_PROHIBITED ) -#define EEFI_LOAD( efirc ) EPLATFORM ( EINFO_EEFI_LOAD, efirc, \ - EEFI_LOAD_PROHIBITED ) -#define EINFO_EEFI_START \ - __einfo_uniqify ( EINFO_EPLATFORM, 0x02, \ - "Could not start image" ) -#define EEFI_START( efirc ) EPLATFORM ( EINFO_EEFI_START, efirc ) - -/** - * Create device path for image - * - * @v image EFI image - * @v parent Parent device path - * @ret path Device path, or NULL on failure - * - * The caller must eventually free() the device path. - */ -static EFI_DEVICE_PATH_PROTOCOL * -efi_image_path ( struct image *image, EFI_DEVICE_PATH_PROTOCOL *parent ) { - EFI_DEVICE_PATH_PROTOCOL *path; - FILEPATH_DEVICE_PATH *filepath; - EFI_DEVICE_PATH_PROTOCOL *end; - size_t name_len; - size_t prefix_len; - size_t filepath_len; - size_t len; - - /* Calculate device path lengths */ - end = efi_devpath_end ( parent ); - prefix_len = ( ( void * ) end - ( void * ) parent ); - name_len = strlen ( image->name ); - filepath_len = ( SIZE_OF_FILEPATH_DEVICE_PATH + - ( name_len + 1 /* NUL */ ) * sizeof ( wchar_t ) ); - len = ( prefix_len + filepath_len + sizeof ( *end ) ); - - /* Allocate device path */ - path = zalloc ( len ); - if ( ! path ) - return NULL; - - /* Construct device path */ - memcpy ( path, parent, prefix_len ); - filepath = ( ( ( void * ) path ) + prefix_len ); - filepath->Header.Type = MEDIA_DEVICE_PATH; - filepath->Header.SubType = MEDIA_FILEPATH_DP; - filepath->Header.Length[0] = ( filepath_len & 0xff ); - filepath->Header.Length[1] = ( filepath_len >> 8 ); - efi_snprintf ( filepath->PathName, ( name_len + 1 /* NUL */ ), - "%s", image->name ); - end = ( ( ( void * ) filepath ) + filepath_len ); - end->Type = END_DEVICE_PATH_TYPE; - end->SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE; - end->Length[0] = sizeof ( *end ); - - return path; -} - -/** - * Create command line for image - * - * @v image EFI image - * @ret cmdline Command line, or NULL on failure - */ -static wchar_t * efi_image_cmdline ( struct image *image ) { - wchar_t *cmdline; - size_t len; - - len = ( strlen ( image->name ) + - ( image->cmdline ? - ( 1 /* " " */ + strlen ( image->cmdline ) ) : 0 ) ); - cmdline = zalloc ( ( len + 1 /* NUL */ ) * sizeof ( wchar_t ) ); - if ( ! cmdline ) - return NULL; - efi_snprintf ( cmdline, ( len + 1 /* NUL */ ), "%s%s%s", - image->name, - ( image->cmdline ? " " : "" ), - ( image->cmdline ? image->cmdline : "" ) ); - return cmdline; -} - -/** - * Execute EFI image - * - * @v image EFI image - * @ret rc Return status code - */ -static int efi_image_exec ( struct image *image ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - struct efi_snp_device *snpdev; - EFI_DEVICE_PATH_PROTOCOL *path; - union { - EFI_LOADED_IMAGE_PROTOCOL *image; - void *interface; - } loaded; - EFI_HANDLE handle; - wchar_t *cmdline; - EFI_STATUS efirc; - int rc; - - /* Find an appropriate device handle to use */ - snpdev = last_opened_snpdev(); - if ( ! snpdev ) { - DBGC ( image, "EFIIMAGE %p could not identify SNP device\n", - image ); - rc = -ENODEV; - goto err_no_snpdev; - } - - /* Install file I/O protocols */ - if ( ( rc = efi_file_install ( snpdev->handle ) ) != 0 ) { - DBGC ( image, "EFIIMAGE %p could not install file protocol: " - "%s\n", image, strerror ( rc ) ); - goto err_file_install; - } - - /* Install iPXE download protocol */ - if ( ( rc = efi_download_install ( snpdev->handle ) ) != 0 ) { - DBGC ( image, "EFIIMAGE %p could not install iPXE download " - "protocol: %s\n", image, strerror ( rc ) ); - goto err_download_install; - } - - /* Create device path for image */ - path = efi_image_path ( image, snpdev->path ); - if ( ! path ) { - DBGC ( image, "EFIIMAGE %p could not create device path\n", - image ); - rc = -ENOMEM; - goto err_image_path; - } - - /* Create command line for image */ - cmdline = efi_image_cmdline ( image ); - if ( ! cmdline ) { - DBGC ( image, "EFIIMAGE %p could not create command line\n", - image ); - rc = -ENOMEM; - goto err_cmdline; - } - - /* Attempt loading image */ - if ( ( efirc = bs->LoadImage ( FALSE, efi_image_handle, path, - user_to_virt ( image->data, 0 ), - image->len, &handle ) ) != 0 ) { - /* Not an EFI image */ - rc = -EEFI_LOAD ( efirc ); - DBGC ( image, "EFIIMAGE %p could not load: %s\n", - image, strerror ( rc ) ); - goto err_load_image; - } - - /* Get the loaded image protocol for the newly loaded image */ - efirc = bs->OpenProtocol ( handle, &efi_loaded_image_protocol_guid, - &loaded.interface, efi_image_handle, - NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL ); - if ( efirc ) { - /* Should never happen */ - rc = -EEFI ( efirc ); - goto err_open_protocol; - } - - /* Some EFI 1.10 implementations seem not to fill in DeviceHandle */ - if ( loaded.image->DeviceHandle == NULL ) { - DBGC ( image, "EFIIMAGE %p filling in missing DeviceHandle\n", - image ); - loaded.image->DeviceHandle = snpdev->handle; - } - - /* Sanity checks */ - assert ( loaded.image->ParentHandle == efi_image_handle ); - assert ( loaded.image->DeviceHandle == snpdev->handle ); - assert ( loaded.image->LoadOptionsSize == 0 ); - assert ( loaded.image->LoadOptions == NULL ); - - /* Set command line */ - loaded.image->LoadOptions = cmdline; - loaded.image->LoadOptionsSize = - ( ( wcslen ( cmdline ) + 1 /* NUL */ ) * sizeof ( wchar_t ) ); - - /* Release network devices for use via SNP */ - efi_snp_release(); - - /* Wrap calls made by the loaded image (for debugging) */ - efi_wrap ( handle ); - - /* Start the image */ - if ( ( efirc = bs->StartImage ( handle, NULL, NULL ) ) != 0 ) { - rc = -EEFI_START ( efirc ); - DBGC ( image, "EFIIMAGE %p could not start (or returned with " - "error): %s\n", image, strerror ( rc ) ); - goto err_start_image; - } - - /* Success */ - rc = 0; - - err_start_image: - efi_snp_claim(); - err_open_protocol: - /* If there was no error, then the image must have been - * started and returned successfully. It either unloaded - * itself, or it intended to remain loaded (e.g. it was a - * driver). We therefore do not unload successful images. - * - * If there was an error, attempt to unload the image. This - * may not work. In particular, there is no way to tell - * whether an error returned from StartImage() was due to - * being unable to start the image (in which case we probably - * should call UnloadImage()), or due to the image itself - * returning an error (in which case we probably should not - * call UnloadImage()). We therefore ignore any failures from - * the UnloadImage() call itself. - */ - if ( rc != 0 ) - bs->UnloadImage ( handle ); - err_load_image: - free ( cmdline ); - err_cmdline: - free ( path ); - err_image_path: - efi_download_uninstall ( snpdev->handle ); - err_download_install: - efi_file_uninstall ( snpdev->handle ); - err_file_install: - err_no_snpdev: - return rc; -} - -/** - * Probe EFI image - * - * @v image EFI file - * @ret rc Return status code - */ -static int efi_image_probe ( struct image *image ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - static EFI_DEVICE_PATH_PROTOCOL empty_path = { - .Type = END_DEVICE_PATH_TYPE, - .SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE, - .Length[0] = sizeof ( empty_path ), - }; - EFI_HANDLE handle; - EFI_STATUS efirc; - int rc; - - /* Attempt loading image */ - if ( ( efirc = bs->LoadImage ( FALSE, efi_image_handle, &empty_path, - user_to_virt ( image->data, 0 ), - image->len, &handle ) ) != 0 ) { - /* Not an EFI image */ - rc = -EEFI_LOAD ( efirc ); - DBGC ( image, "EFIIMAGE %p could not load: %s\n", - image, strerror ( rc ) ); - return rc; - } - - /* Unload the image. We can't leave it loaded, because we - * have no "unload" operation. - */ - bs->UnloadImage ( handle ); - - return 0; -} - -/** EFI image type */ -struct image_type efi_image_type __image_type ( PROBE_NORMAL ) = { - .name = "EFI", - .probe = efi_image_probe, - .exec = efi_image_exec, -}; |