1 files changed, 54 insertions, 0 deletions
diff --git a/firmware/lib/region-fw.c b/firmware/lib/region-fw.c
new file mode 100644
index 00000000..13b1c92b
--- /dev/null
+++ b/firmware/lib/region-fw.c
@@ -0,0 +1,54 @@
+/* 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_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);
+}