Major refactoring of structures, with unit tests. This matches the doc I sent out earlier.

Firmware-side code for LoadKernel() is in place now.  LoadFirmware() replacement coming soon.

The new functions are implemented in parallel to the existing ones (i.e., everything that used to work still does).

Review URL: http://codereview.chromium.org/2745007

vboot_firmware/lib/include/vboot_kernel.h

@@ -0,0 +1,36 @@
+/* Copyright (c) 2010 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.
+ *
+ * Data structure and API definitions for a verified boot kernel image.
+ * (Firmware Portion)
+ */
+
+#ifndef VBOOT_REFERENCE_VBOOT_KERNEL_H_
+#define VBOOT_REFERENCE_VBOOT_KERNEL_H_
+
+#include <stdint.h>
+
+#include "cgptlib.h"
+#include "cryptolib.h"
+#include "load_kernel_fw.h"
+#include "vboot_common.h"
+
+/* TODO: temporary hack */
+void FakePartitionAttributes(GptData* gpt);
+
+/* Allocates and reads GPT data from the drive.  The sector_bytes and
+ * drive_sectors fields should be filled on input.  The primary and
+ * secondary header and entries are filled on output.
+ *
+ * Returns 0 if successful, 1 if error. */
+int AllocAndReadGptData(GptData* gptdata);
+
+/* Writes any changes for the GPT data back to the drive, then frees the
+ * buffers. */
+void WriteAndFreeGptData(GptData* gptdata);
+
+/* Alternate LoadKernel() implementation; see load_kernel_fw.h */
+int LoadKernel2(LoadKernelParams* params);
+
+#endif  /* VBOOT_REFERENCE_VBOOT_KERNEL_H_ */