You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.4 KiB
56 lines
1.4 KiB
/* 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 API for loading and verifying rewritable firmware.
|
|
* (Firmware portion)
|
|
*/
|
|
|
|
#include "sysincludes.h"
|
|
|
|
#include "bmpblk_header.h"
|
|
#include "region.h"
|
|
#include "gbb_access.h"
|
|
#include "gbb_header.h"
|
|
#include "load_kernel_fw.h"
|
|
#include "utility.h"
|
|
#include "vboot_api.h"
|
|
#include "vboot_struct.h"
|
|
|
|
static VbError_t VbGbbReadKey(VbCommonParams *cparams, uint32_t offset,
|
|
VbPublicKey **keyp)
|
|
{
|
|
VbPublicKey hdr, *key;
|
|
VbError_t ret;
|
|
uint32_t size;
|
|
|
|
ret = VbRegionReadData(cparams, VB_REGION_GBB, offset,
|
|
sizeof(VbPublicKey), &hdr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Deal with a zero-size key (used in testing) */
|
|
size = hdr.key_offset + hdr.key_size;
|
|
if (size < sizeof(hdr))
|
|
size = sizeof(hdr);
|
|
key = VbExMalloc(size);
|
|
ret = VbRegionReadData(cparams, VB_REGION_GBB, offset, size, key);
|
|
if (ret) {
|
|
VbExFree(key);
|
|
return ret;
|
|
}
|
|
|
|
*keyp = key;
|
|
return VBERROR_SUCCESS;
|
|
}
|
|
|
|
VbError_t VbGbbReadRootKey(VbCommonParams *cparams, VbPublicKey **keyp)
|
|
{
|
|
return VbGbbReadKey(cparams, cparams->gbb->rootkey_offset, keyp);
|
|
}
|
|
|
|
VbError_t VbGbbReadRecoveryKey(VbCommonParams *cparams, VbPublicKey **keyp)
|
|
{
|
|
return VbGbbReadKey(cparams, cparams->gbb->recovery_key_offset, keyp);
|
|
}
|