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VbExEcGetExpectedRW() should take a const **

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Since vboot is expected not to modify the contents of the returned pointer.

BUG=chrome-os-partner:11148
TEST=if it builds, it worked

This change MUST be submitted at the same time as u-boot
https://gerrit.chromium.org/gerrit/28146.

Change-Id: Ieeee8f456a7fbd9fe6b108a29e208058310b471b
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/28145
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Randall Spangler
2012-07-22 17:47:36 -07:00
committed by Gerrit
parent 6e73147523
commit 029ae65756
3 changed files with 27 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
firmware/include/vboot_api.h
View File

@@ -638,8 +638,8 @@ VbError_t VbExEcHashRW(const uint8_t **hash, int *hash_size);
/* Get the expected contents of the EC image associated with the main firmware
* specified by the "select" argument. */
VbError_t VbExEcGetExpectedRW(enum VbSelectFirmware_t select, uint8_t **image,
int *image_size);
VbError_t VbExEcGetExpectedRW(enum VbSelectFirmware_t select,
const uint8_t **image, int *image_size);
/* Update the EC rewritable image. */
VbError_t VbExEcUpdateRW(const uint8_t *image, int image_size);

24
firmware/lib/vboot_api_kernel.c
View File

@@ -1,4 +1,4 @@
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
/* Copyright (c) 2012 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.
*
@@ -351,6 +351,10 @@ VbError_t VbBootRecovery(VbCommonParams* cparams, LoadKernelParams* p) {
VbError_t VbEcSoftwareSync(VbSharedDataHeader *shared) {
int in_rw = 0;
int rv = VbExEcRunningRW(&in_rw);
const uint8_t *ec_hash;
int ec_hash_size;
const uint8_t *expected;
int expected_size;
if (shared->recovery_reason) {
/* Recovery mode; just verify the EC is in RO code */
@@ -409,6 +413,24 @@ VbError_t VbEcSoftwareSync(VbSharedDataHeader *shared) {
return VBERROR_SUCCESS;
}
/* Get hash of EC-RW */
rv = VbExEcHashRW(&ec_hash, &ec_hash_size);
if (rv) {
VBDEBUG(("VbEcSoftwareSync() - VbExEcHashRW() returned %d\n", rv));
VbSetRecoveryRequest(VBNV_RECOVERY_EC_SOFTWARE_SYNC);
return VBERROR_EC_REBOOT_TO_RO_REQUIRED;
}
VBDEBUG(("VbEcSoftwareSync() - hash len = %d\n", ec_hash_size));
/* Get expected EC-RW code */
rv = VbExEcGetExpectedRW(shared->firmware_index, &expected, &expected_size);
if (rv) {
VBDEBUG(("VbEcSoftwareSync() - VbExEcGetExpectedRW() returned %d\n", rv));
VbSetRecoveryRequest(VBNV_RECOVERY_EC_SOFTWARE_SYNC);
return VBERROR_EC_REBOOT_TO_RO_REQUIRED;
}
VBDEBUG(("VbEcSoftwareSync() - expected len = %d\n", expected_size));
/* TODO: verify EC-RW hash vs. expected code */
if (in_rw) {

4
firmware/stub/vboot_api_stub.c
View File

@@ -173,8 +173,8 @@ VbError_t VbExEcHashRW(const uint8_t **hash, int *hash_size) {
return VBERROR_SUCCESS;
}
VbError_t VbExEcGetExpectedRW(enum VbSelectFirmware_t select, uint8_t **image,
int *image_size) {
VbError_t VbExEcGetExpectedRW(enum VbSelectFirmware_t select,
const uint8_t **image, int *image_size) {
static uint8_t fake_image[64] = {5, 6, 7, 8};
*image = fake_image;
*image_size = sizeof(fake_image);