diff options
Diffstat (limited to 'firmware/lib/vboot_api_firmware.c')
| -rw-r--r-- | firmware/lib/vboot_api_firmware.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/firmware/lib/vboot_api_firmware.c b/firmware/lib/vboot_api_firmware.c deleted file mode 100644 index c893d704..00000000 --- a/firmware/lib/vboot_api_firmware.c +++ /dev/null @@ -1,146 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * High-level firmware wrapper API - entry points for init, firmware selection - */ - -#include "sysincludes.h" - -#include "gbb_access.h" -#include "gbb_header.h" -#include "load_firmware_fw.h" -#include "rollback_index.h" -#include "tpm_bootmode.h" -#include "utility.h" -#include "vboot_api.h" -#include "vboot_common.h" -#include "vboot_nvstorage.h" - -VbError_t VbSelectFirmware(VbCommonParams *cparams, - VbSelectFirmwareParams *fparams) -{ - VbSharedDataHeader *shared = - (VbSharedDataHeader *)cparams->shared_data_blob; - VbNvContext vnc; - VbError_t retval = VBERROR_UNKNOWN; /* Default to error */ - int is_rec = (shared->recovery_reason ? 1 : 0); - int is_dev = (shared->flags & VBSD_BOOT_DEV_SWITCH_ON ? 1 : 0); - uint32_t tpm_status = 0; - - cparams->gbb = NULL; - cparams->bmp = NULL; - - /* Start timer */ - shared->timer_vb_select_firmware_enter = VbExGetTimer(); - - /* Load NV storage */ - VbExNvStorageRead(vnc.raw); - VbNvSetup(&vnc); - - if (is_rec) { - /* - * Recovery is requested; go straight to recovery without - * checking the RW firmware. - */ - VBDEBUG(("VbSelectFirmware() detected recovery request\n")); - - /* Best effort to read the GBB */ - cparams->gbb = VbExMalloc(sizeof(*cparams->gbb)); - retval = VbGbbReadHeader_static(cparams, cparams->gbb); - if (VBERROR_SUCCESS != retval) { - VBDEBUG(("Can't read GBB. Continuing anyway...\n")); - VbExFree(cparams->gbb); - cparams->gbb = NULL; - } - - /* Go directly to recovery mode */ - fparams->selected_firmware = VB_SELECT_FIRMWARE_RECOVERY; - } else { - cparams->gbb = VbExMalloc(sizeof(*cparams->gbb)); - retval = VbGbbReadHeader_static(cparams, cparams->gbb); - if (VBERROR_SUCCESS != retval) - goto VbSelectFirmware_exit; - - /* Chain to LoadFirmware() */ - retval = LoadFirmware(cparams, fparams, &vnc); - - /* Exit if we failed to find an acceptable firmware */ - if (VBERROR_SUCCESS != retval) - goto VbSelectFirmware_exit; - - /* Translate the selected firmware path */ - if (shared->flags & VBSD_LF_USE_RO_NORMAL) { - /* Request the read-only normal/dev code path */ - fparams->selected_firmware = - VB_SELECT_FIRMWARE_READONLY; - } else if (0 == shared->firmware_index) - fparams->selected_firmware = VB_SELECT_FIRMWARE_A; - else { - fparams->selected_firmware = VB_SELECT_FIRMWARE_B; - } - - /* Update TPM if necessary */ - if (shared->fw_version_tpm_start < shared->fw_version_tpm) { - tpm_status = - RollbackFirmwareWrite(shared->fw_version_tpm); - if (0 != tpm_status) { - VBDEBUG(("Can't write FW version to TPM.\n")); - VbNvSet(&vnc, VBNV_RECOVERY_REQUEST, - VBNV_RECOVERY_RO_TPM_W_ERROR); - retval = VBERROR_TPM_WRITE_FIRMWARE; - goto VbSelectFirmware_exit; - } - } - - /* Lock firmware versions in TPM */ - tpm_status = RollbackFirmwareLock(); - if (0 != tpm_status) { - VBDEBUG(("Unable to lock firmware version in TPM.\n")); - VbNvSet(&vnc, VBNV_RECOVERY_REQUEST, - VBNV_RECOVERY_RO_TPM_L_ERROR); - retval = VBERROR_TPM_LOCK_FIRMWARE; - goto VbSelectFirmware_exit; - } - } - - /* - * At this point, we have a good idea of how we are going to - * boot. Update the TPM with this state information. - */ - tpm_status = SetTPMBootModeState(is_dev, is_rec, - shared->fw_keyblock_flags, - cparams->gbb); - if (0 != tpm_status) { - VBDEBUG(("Can't update the TPM with boot mode information.\n")); - if (!is_rec) { - VbNvSet(&vnc, VBNV_RECOVERY_REQUEST, - VBNV_RECOVERY_RO_TPM_U_ERROR); - retval = VBERROR_TPM_SET_BOOT_MODE_STATE; - goto VbSelectFirmware_exit; - } - } - - /* Success! */ - retval = VBERROR_SUCCESS; - - VbSelectFirmware_exit: - - if (cparams->gbb) { - VbExFree(cparams->gbb); - cparams->gbb = NULL; - } - - /* Save NV storage */ - VbNvTeardown(&vnc); - if (vnc.raw_changed) - VbExNvStorageWrite(vnc.raw); - - /* Stop timer */ - shared->timer_vb_select_firmware_exit = VbExGetTimer(); - - /* Should always have a known error code */ - VbAssert(VBERROR_UNKNOWN != retval); - - return retval; -} |