Implementation of Region APIstabilize-4636.B

At present reading data from storage in Vboot is a little fragmented. For
the firmware image, we expect the boot loader to handle this. For the disk
we have a block-level API. For the GBB (which also sits in the firmware
image) we expect the entire thing to be read before Vboot is called.

Add the concept of a region, and an API to read from a region. At present,
and most pressing, is reading from a GBB region. In the future this could
be extended to other parts of the firmware or even the disk.

Move all access to the GBB into this API so that the boot loader can provide
either a GBB region in one large contiguous chunk, or a function to deal with
read requests from vboot.

The call to VbExRegionRead() is behind a flag since not all boot loaders
support it yet.

The main change for boot loaders which don't support this new API is that
vboot will do more behind the scenes. For example, it will allocate memory
for chunks of data that it reads from the GBB, rather than just accessing it
directly. This approach is considerably simpler than trying to pass char **
everywhere and have vboot decide whether something needs to be allocated or
not.

The tests are updated, mainly to include setting up a GBB structure
accessible from VbCommonParams, which is now required by the firmware and
kernel functions. In normal operation this is set up at the start of
VbLoadFIrmware() and VbSelectAndLoadKernel() but for tests which call
children of these functions directly, the GBB structure must be set up
manually by the test.

BUG=chrome-os-partner:21115
BRANCH=none
TEST=manual
FEATURES=test sudo -E  emerge vboot_reference

Change-Id: If2b8bbe467fdbd643239d8d9b5d7aa98df4d286f
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/63336
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/167361

31 files changed, 1044 insertions, 254 deletions

diff --git a/Makefile b/Makefile
index 403b4d62..b810a5f5 100644
--- a/Makefile
+++ b/Makefile
@@ -239,6 +239,7 @@ VBINIT_SRCS = \
 	firmware/lib/vboot_api_init.c \
 	firmware/lib/vboot_common_init.c \
 	firmware/lib/vboot_nvstorage.c \
+	firmware/lib/region-init.c \
 
 # Additional firmware library sources needed by VbSelectFirmware() call
 VBSF_SRCS = \
@@ -252,7 +253,8 @@ VBSF_SRCS = \
 	firmware/lib/stateful_util.c \
 	firmware/lib/vboot_api_firmware.c \
 	firmware/lib/vboot_common.c \
-	firmware/lib/vboot_firmware.c
+	firmware/lib/vboot_firmware.c \
+	firmware/lib/region-fw.c \
 
 # Additional firmware library sources needed by VbSelectAndLoadKernel() call
 VBSLK_SRCS = \
@@ -264,7 +266,8 @@ VBSLK_SRCS = \
 	firmware/lib/vboot_api_kernel.c \
 	firmware/lib/vboot_audio.c \
 	firmware/lib/vboot_display.c \
-	firmware/lib/vboot_kernel.c
+	firmware/lib/vboot_kernel.c \
+	firmware/lib/region-kernel.c \
 
 # Support real TPM unless BIOS sets MOCK_TPM
 ifeq (${MOCK_TPM},)
@@ -289,7 +292,8 @@ ifeq (${FIRMWARE_ARCH},)
 VBINIT_SRCS += \
 	firmware/stub/tpm_lite_stub.c \
 	firmware/stub/utility_stub.c \
-	firmware/stub/vboot_api_stub_init.c
+	firmware/stub/vboot_api_stub_init.c \
+	firmware/stub/vboot_api_stub_region.c
 
 VBSF_SRCS += \
 	firmware/stub/vboot_api_stub_sf.c
@@ -533,6 +537,10 @@ TEST_NAMES = \
 	tests/vboot_nvstorage_test \
 	tests/futility/test_not_really
 
+ifdef REGION_READ
+TEST_NAMES += tests/vboot_region_tests
+endif
+
 # TODO: port these tests to new API, if not already eqivalent
 # functionality in other tests.  These don't even compile at present.
 #
@@ -642,6 +650,10 @@ ${FWLIB_OBJS}: CFLAGS += -DSAVE_LOCALE_IMMEDIATELY
 ${FWLIB_OBJS}: CFLAGS += -DCOPY_BMP_DATA
 endif
 
+ifdef REGION_READ
+${FWLIB_OBJS}: CFLAGS += -DREGION_READ
+endif
+
 ifeq (${FIRMWARE_ARCH},)
 # Disable rollback TPM when compiling locally, since otherwise
 # load_kernel_test attempts to talk to the TPM.
diff --git a/firmware/include/gbb_access.h b/firmware/include/gbb_access.h
new file mode 100644
index 00000000..b94d0cdb
--- /dev/null
+++ b/firmware/include/gbb_access.h
@@ -0,0 +1,83 @@
+/* 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.
+ *
+ * Access to portions of the GBB using the region API.
+ */
+
+#ifndef VBOOT_REFERENCE_GBB_ACCESS_H_
+#define VBOOT_REFERENCE_GBB_ACCESS_H_
+
+#include "vboot_api.h"
+
+struct BmpBlockHeader;
+struct ImageInfo;
+struct GoogleBinaryBlockHeader;
+struct ScreenLayout;
+struct VbPublicKey;
+
+/**
+ * Read the GBB header
+ *
+ * This accesses the GBB and reads its header.
+ *
+ * @param cparams	Vboot common parameters
+ * @param gbb		Place to put GBB header
+ */
+VbError_t VbGbbReadHeader_static(VbCommonParams *cparams,
+				 struct GoogleBinaryBlockHeader *gbb);
+
+/**
+ * Read the root key from the GBB
+ *
+ * @param cparams	Vboot common parameters
+ * @param keyp		Returns a pointer to the key. The caller must call
+ *			VbExFree() on the key when finished with it.
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbGbbReadRootKey(VbCommonParams *cparams,
+			   struct VbPublicKey **keyp);
+
+/**
+ * Read the recovery key from the GBB
+ *
+ * @param cparams	Vboot common parameters
+ * @param keyp		Returns a pointer to the key. The caller must call
+ *			VbExFree() on the key when finished with it.
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbGbbReadRecoveryKey(VbCommonParams *cparams,
+			       struct VbPublicKey **keyp);
+
+/**
+ * Read the bitmap block header from the GBB
+ *
+ * @param cparams	Vboot common parameters
+ * @param hdr		The header is placed in this block
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbGbbReadBmpHeader(VbCommonParams *cparams,
+			     struct BmpBlockHeader *hdr);
+
+/**
+ * Read a image from the GBB
+ *
+ * The caller must call VbExFree() on *image_datap when finished with it.
+ *
+ * @param cparams	Vboot common parameters
+ * @param localization	Localization/language number
+ * @param screen_index	Index of screen to display (VB_SCREEN_...)
+ * @param image_num	Image number within the screen
+ * @param layout	Returns layout information (x, y position)
+ * @param image_info	Returns information about the image (format)
+ * @param image_datap	Returns a pointer to the image data
+ * @param iamge_data_sizep	Return size of image data
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbGbbReadImage(VbCommonParams *cparams,
+			 uint32_t localization, uint32_t screen_index,
+			 uint32_t image_num, struct ScreenLayout *layout,
+			 struct ImageInfo *image_info, char **image_datap,
+			 uint32_t *image_data_sizep);
+
+#endif
diff --git a/firmware/include/region.h b/firmware/include/region.h
new file mode 100644
index 00000000..78e1dba0
--- /dev/null
+++ b/firmware/include/region.h
@@ -0,0 +1,55 @@
+/* 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.
+ *
+ * Access to portions of the firmware image, perhaps later to be expanded
+ * to other devices.
+ */
+
+#ifndef VBOOT_REFERENCE_REGION_H_
+#define VBOOT_REFERENCE_REGION_H_
+
+#include "bmpblk_header.h"
+#include "gbb_header.h"
+#include "vboot_api.h"
+#include "vboot_struct.h"
+
+/* The maximum length of a hardware ID */
+#define VB_REGION_HWID_LEN	256
+
+/**
+ * Read data from a region
+ *
+ * @param cparams	Vboot common parameters
+ * @param region	Region number to read
+ * @param offset	Offset within region to start reading
+ * @param size		Size of data to read
+ * @param buf		Buffer to put the data into
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbRegionReadData(VbCommonParams *cparams,
+			   enum vb_firmware_region region, uint32_t offset,
+			   uint32_t size, void *buf);
+
+/**
+ * Check the version of the GBB and print debug information if valid
+ *
+ * @param cparams	Vboot common parameters
+ */
+void VbRegionCheckVersion(VbCommonParams *cparams);
+
+/**
+ * Read the hardware ID from the GBB
+ *
+ * @param cparams	Vboot common parameters
+ * @param hwid		Place to put HWID, which will be null-terminated
+ * @param max_size	Maximum size of HWID including terminated null
+ *			character (suggest VB_REGION_HWID_LEN). If this size
+ *			it too small then VBERROR_INVALID_PARAMETER is
+ *			returned.
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbRegionReadHWID(VbCommonParams *cparams, char *hwid,
+			   uint32_t max_size);
+
+#endif  /* VBOOT_REFERENCE_REGION_H_ */
diff --git a/firmware/include/vboot_api.h b/firmware/include/vboot_api.h
index 10adc377..214da753 100644
--- a/firmware/include/vboot_api.h
+++ b/firmware/include/vboot_api.h
@@ -104,6 +104,14 @@ enum VbErrorPredefined_t {
 	VBERROR_VGA_OPROM_MISMATCH            = 0x10021,
 	/* Need EC to reboot to read-only code */
 	VBERROR_EC_REBOOT_TO_RO_REQUIRED      = 0x10022,
+	/* Invalid region read parameters */
+	VBERROR_REGION_READ_INVALID           = 0x10023,
+	/* Cannot read from region */
+	VBERROR_REGION_READ_FAILED            = 0x10024,
+	/* Unsupported region type */
+	VBERROR_UNSUPPORTED_REGION            = 0x10025,
+	/* No image present (returned from VbGbbReadImage() for missing image) */
+	VBERROR_NO_IMAGE_PRESENT              = 0x10026,
 
 	/* VbExEcGetExpectedRWHash() may return the following codes */
 	/* Compute expected RW hash from the EC image; BIOS doesn't have it */
@@ -167,6 +175,10 @@ typedef struct VbCommonParams {
 	 * the stack.
 	 */
 	void *caller_context;
+
+	/* For internal use of Vboot - do not examine or modify! */
+	struct GoogleBinaryBlockHeader *gbb;
+	struct BmpBlockHeader *bmp;
 } VbCommonParams;
 
 /* Flags for VbInitParams.flags */
@@ -827,4 +839,33 @@ enum {
  */
 int VbExLegacy(void);
 
+/* Regions for VbExRegionRead() */
+enum vb_firmware_region {
+	VB_REGION_GBB,	/* Google Binary Block - see gbbheader.h */
+
+	VB_REGION_COUNT,
+};
+
+/**
+ * Read data from a region of the firmware image
+ *
+ * Vboot wants access to a region, to read data from it. This function
+ * reads it (typically from the firmware image such as SPI flash) and
+ * returns the data.
+ *
+ * cparams is passed so that the boot loader has some context for the
+ * operation.
+ *
+ * @param cparams	Common parameters, e.g. use member caller_context
+ *			to point to useful context data
+ * @param region	Firmware region to read
+ * @param offset	Start offset within region
+ * @param size		Number of bytes to read
+ * @param buf		Place to put data
+ * @return VBERROR_... error, VBERROR_SUCCESS on success,
+ */
+VbError_t VbExRegionRead(VbCommonParams *cparams,
+			 enum vb_firmware_region region, uint32_t offset,
+			 uint32_t size, void *buf);
+
 #endif  /* VBOOT_REFERENCE_VBOOT_API_H_ */
diff --git a/firmware/lib/include/load_kernel_fw.h b/firmware/lib/include/load_kernel_fw.h
index dd6e1a84..a710ee5d 100644
--- a/firmware/lib/include/load_kernel_fw.h
+++ b/firmware/lib/include/load_kernel_fw.h
@@ -74,7 +74,7 @@ typedef struct LoadKernelParams {
  * Returns VBERROR_SUCCESS if successful.  If unsuccessful, sets a recovery
  * reason via VbNvStorage and returns an error code.
  */
-VbError_t LoadKernel(LoadKernelParams *params);
+VbError_t LoadKernel(LoadKernelParams *params, VbCommonParams *cparams);
 
 /*
  * The bootloader is loaded using the EFI LoadImage() and StartImage() calls.
diff --git a/firmware/lib/include/vboot_display.h b/firmware/lib/include/vboot_display.h
index 17ce48b8..c35f6697 100644
--- a/firmware/lib/include/vboot_display.h
+++ b/firmware/lib/include/vboot_display.h
@@ -43,11 +43,6 @@ void VbRenderTextAtPos(const char *text, int right_to_left,
 const char *RecoveryReasonString(uint8_t code);
 
 /**
- * Return a fixed string representing the HWID.
- */
-const char *VbHWID(VbCommonParams *cparams);
-
-/**
  * Get the number of localizations in the GBB bitmap data.
  */
 VbError_t VbGetLocalizationCount(VbCommonParams *cparams, uint32_t *count);
diff --git a/firmware/lib/include/vboot_kernel.h b/firmware/lib/include/vboot_kernel.h
index 1243cb84..48e12536 100644
--- a/firmware/lib/include/vboot_kernel.h
+++ b/firmware/lib/include/vboot_kernel.h
@@ -11,6 +11,7 @@
 
 #include "cgptlib.h"
 #include "load_firmware_fw.h"
+#include "load_kernel_fw.h"
 #include "vboot_api.h"
 
 /**
@@ -33,6 +34,11 @@ int WriteAndFreeGptData(VbExDiskHandle_t disk_handle, GptData *gptdata);
 VbNvContext *VbApiKernelGetVnc(void);
 
 /**
+ * Exported for unit tests only - frees memory used by VbSelectAndLoadKernel()
+ */
+void VbApiKernelFree(VbCommonParams *cparams);
+
+/**
  * Try to load a kernel.
  */
 uint32_t VbTryLoadKernel(VbCommonParams *cparams, LoadKernelParams *p,
diff --git a/firmware/lib/region-fw.c b/firmware/lib/region-fw.c
new file mode 100644
index 00000000..e2c6488a
--- /dev/null
+++ b/firmware/lib/region-fw.c
@@ -0,0 +1,55 @@
+/* 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);
+}
diff --git a/firmware/lib/region-init.c b/firmware/lib/region-init.c
new file mode 100644
index 00000000..bec0450d
--- /dev/null
+++ b/firmware/lib/region-init.c
@@ -0,0 +1,50 @@
+/* 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"
+
+VbError_t VbRegionReadData(VbCommonParams *cparams,
+			   enum vb_firmware_region region, uint32_t offset,
+			   uint32_t size, void *buf)
+{
+	/* This is the old API, for backwards compatibility */
+	if (region == VB_REGION_GBB && cparams->gbb_data) {
+		if (offset + size > cparams->gbb_size)
+			return VBERROR_INVALID_GBB;
+		Memcpy(buf, cparams->gbb_data + offset, size);
+	} else
+#ifdef REGION_READ
+	{
+		VbError_t ret;
+
+		ret = VbExRegionRead(cparams, region, offset, size, buf);
+		if (ret)
+			return ret;
+	}
+#else
+	return VBERROR_INVALID_GBB;
+#endif
+
+	return VBERROR_SUCCESS;
+}
+
+VbError_t VbGbbReadHeader_static(VbCommonParams *cparams,
+				 GoogleBinaryBlockHeader *gbb)
+{
+	return VbRegionReadData(cparams, VB_REGION_GBB, 0,
+				sizeof(GoogleBinaryBlockHeader), gbb);
+}
diff --git a/firmware/lib/region-kernel.c b/firmware/lib/region-kernel.c
new file mode 100644
index 00000000..84d474da
--- /dev/null
+++ b/firmware/lib/region-kernel.c
@@ -0,0 +1,200 @@
+/* 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 VbRegionReadGbb(VbCommonParams *cparams, uint32_t offset,
+				  uint32_t size, void *buf)
+{
+	return VbRegionReadData(cparams, VB_REGION_GBB, offset, size, buf);
+}
+
+VbError_t VbGbbReadBmpHeader(VbCommonParams *cparams, BmpBlockHeader *hdr_ret)
+{
+	BmpBlockHeader *hdr;
+	VbError_t ret;
+
+	if (!cparams)
+		return VBERROR_INVALID_GBB;
+	if (!cparams->bmp) {
+		GoogleBinaryBlockHeader *gbb = cparams->gbb;
+
+		if (0 == gbb->bmpfv_size)
+			return VBERROR_INVALID_GBB;
+
+		hdr = VbExMalloc(sizeof(*hdr));
+		ret = VbRegionReadGbb(cparams, gbb->bmpfv_offset,
+				      sizeof(BmpBlockHeader), hdr);
+		if (ret) {
+			VbExFree(hdr);
+			return ret;
+		}
+
+		/* Sanity-check the bitmap block header */
+		if ((0 != Memcmp(hdr->signature, BMPBLOCK_SIGNATURE,
+				BMPBLOCK_SIGNATURE_SIZE)) ||
+		(hdr->major_version > BMPBLOCK_MAJOR_VERSION) ||
+		((hdr->major_version == BMPBLOCK_MAJOR_VERSION) &&
+		(hdr->minor_version > BMPBLOCK_MINOR_VERSION))) {
+			VBDEBUG(("VbDisplayScreenFromGBB(): "
+				"invalid/too new bitmap header\n"));
+			VbExFree(hdr);
+			return VBERROR_INVALID_BMPFV;
+		}
+		cparams->bmp = hdr;
+	}
+
+	*hdr_ret = *cparams->bmp;
+	return VBERROR_SUCCESS;
+}
+
+VbError_t VbRegionReadHWID(VbCommonParams *cparams, char *hwid,
+			   uint32_t max_size)
+{
+	GoogleBinaryBlockHeader *gbb;
+	VbError_t ret;
+
+	if (!max_size)
+		return VBERROR_INVALID_PARAMETER;
+	*hwid = '\0';
+	StrnAppend(hwid, "{INVALID}", max_size);
+	if (!cparams)
+		return VBERROR_INVALID_GBB;
+
+	gbb = cparams->gbb;
+
+	if (0 == gbb->hwid_size) {
+		VBDEBUG(("VbHWID(): invalid hwid size\n"));
+		return VBERROR_SUCCESS; /* oddly enough! */
+	}
+
+	if (gbb->hwid_size > max_size) {
+		VBDEBUG(("VbDisplayDebugInfo(): invalid hwid offset/size\n"));
+		return VBERROR_INVALID_PARAMETER;
+	}
+	ret = VbRegionReadGbb(cparams, gbb->hwid_offset, gbb->hwid_size, hwid);
+	if (ret)
+		return ret;
+
+	return VBERROR_SUCCESS;
+}
+
+VbError_t VbGbbReadImage(VbCommonParams *cparams,
+			       uint32_t localization, uint32_t screen_index,
+			       uint32_t image_num, ScreenLayout *layout,
+			       ImageInfo *image_info, char **image_datap,
+			       uint32_t *image_data_sizep)
+{
+	uint32_t layout_offset, image_offset, data_offset, data_size;
+	GoogleBinaryBlockHeader *gbb;
+	BmpBlockHeader hdr;
+	void *data = NULL;
+	VbError_t ret;
+
+	if (!cparams)
+		return VBERROR_INVALID_GBB;
+
+	ret = VbGbbReadBmpHeader(cparams, &hdr);
+	if (ret)
+		return ret;
+
+	gbb = cparams->gbb;
+	layout_offset = gbb->bmpfv_offset + sizeof(BmpBlockHeader) +
+		localization * hdr.number_of_screenlayouts *
+			sizeof(ScreenLayout) +
+		screen_index * sizeof(ScreenLayout);
+	ret = VbRegionReadGbb(cparams, layout_offset, sizeof(*layout), layout);
+	if (ret)
+		return ret;
+
+	if (!layout->images[image_num].image_info_offset)
+		return VBERROR_NO_IMAGE_PRESENT;
+
+	image_offset = gbb->bmpfv_offset +
+			layout->images[image_num].image_info_offset;
+	ret = VbRegionReadGbb(cparams, image_offset, sizeof(*image_info),
+			      image_info);
+	if (ret)
+		return ret;
+
+	data_offset = image_offset + sizeof(*image_info);
+	data_size = image_info->compressed_size;
+	if (data_size) {
+		void *orig_data;
+
+		data = VbExMalloc(image_info->compressed_size);
+		ret = VbRegionReadGbb(cparams, data_offset,
+				      image_info->compressed_size, data);
+		if (ret) {
+			VbExFree(data);
+			return ret;
+		}
+		if (image_info->compression != COMPRESS_NONE) {
+			uint32_t inoutsize = image_info->original_size;
+
+			orig_data = VbExMalloc(image_info->original_size);
+			ret = VbExDecompress(data,
+					     image_info->compressed_size,
+					     image_info->compression,
+					     orig_data, &inoutsize);
+			data_size = inoutsize;
+			VbExFree(data);
+			data = orig_data;
+			if (ret) {
+				VbExFree(data);
+				return ret;
+			}
+		}
+	}
+
+	*image_datap = data;
+	*image_data_sizep = data_size;
+
+	return VBERROR_SUCCESS;
+}
+
+#define OUTBUF_LEN 128
+
+void VbRegionCheckVersion(VbCommonParams *cparams)
+{
+	GoogleBinaryBlockHeader *gbb;
+
+	if (!cparams)
+		return;
+
+	gbb = cparams->gbb;
+
+	/*
+	 * If GBB flags is nonzero, complain because that's something that the
+	 * factory MUST fix before shipping. We only have to do this here,
+	 * because it's obvious that something is wrong if we're not displaying
+	 * screens from the GBB.
+	 */
+	if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1 &&
+	    (gbb->flags != 0)) {
+		uint32_t used = 0;
+		char outbuf[OUTBUF_LEN];
+
+		*outbuf = '\0';
+		used += StrnAppend(outbuf + used, "gbb.flags is nonzero: 0x",
+				OUTBUF_LEN - used);
+		used += Uint64ToString(outbuf + used, OUTBUF_LEN - used,
+				       gbb->flags, 16, 8);
+		used += StrnAppend(outbuf + used, "\n", OUTBUF_LEN - used);
+		(void)VbExDisplayDebugInfo(outbuf);
+	}
+}
diff --git a/firmware/lib/vboot_api_firmware.c b/firmware/lib/vboot_api_firmware.c
index e0c93a37..cfe4251c 100644
--- a/firmware/lib/vboot_api_firmware.c
+++ b/firmware/lib/vboot_api_firmware.c
@@ -7,6 +7,7 @@
 
 #include "sysincludes.h"
 
+#include "gbb_access.h"
 #include "gbb_header.h"
 #include "load_firmware_fw.h"
 #include "rollback_index.h"
@@ -27,6 +28,9 @@ VbError_t VbSelectFirmware(VbCommonParams *cparams,
 	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();
 
@@ -44,6 +48,11 @@ VbError_t VbSelectFirmware(VbCommonParams *cparams,
 		/* 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);
 
@@ -107,6 +116,11 @@ VbError_t VbSelectFirmware(VbCommonParams *cparams,
 
  VbSelectFirmware_exit:
 
+	if (cparams->gbb) {
+		VbExFree(cparams->gbb);
+		cparams->gbb = NULL;
+	}
+
 	/* Save NV storage */
 	VbNvTeardown(&vnc);
 	if (vnc.raw_changed)
diff --git a/firmware/lib/vboot_api_init.c b/firmware/lib/vboot_api_init.c
index c55e708c..ebafe2a7 100644
--- a/firmware/lib/vboot_api_init.c
+++ b/firmware/lib/vboot_api_init.c
@@ -7,6 +7,8 @@
 
 #include "sysincludes.h"
 
+#include "region.h"
+#include "gbb_access.h"
 #include "gbb_header.h"
 #include "load_firmware_fw.h"
 #include "rollback_index.h"
@@ -19,8 +21,7 @@ VbError_t VbInit(VbCommonParams *cparams, VbInitParams *iparams)
 {
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)cparams->shared_data_blob;
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
+	GoogleBinaryBlockHeader gbb;
 	VbNvContext vnc;
 	VbError_t retval = VBERROR_SUCCESS;
 	uint32_t recovery = VBNV_RECOVERY_NOT_REQUESTED;
@@ -36,12 +37,16 @@ VbError_t VbInit(VbCommonParams *cparams, VbInitParams *iparams)
 	uint32_t clear_tpm_owner_request = 0;
 	int is_dev = 0;
 
-	VBDEBUG(("VbInit() input flags 0x%x gbb flags 0x%x\n", iparams->flags,
-		gbb->flags));
-
 	/* Initialize output flags */
 	iparams->out_flags = 0;
 
+	retval = VbGbbReadHeader_static(cparams, &gbb);
+	if (retval)
+		return retval;
+
+	VBDEBUG(("VbInit() input flags 0x%x gbb flags 0x%x\n", iparams->flags,
+		gbb.flags));
+
 	/* Set up NV storage */
 	VbExNvStorageRead(vnc.raw);
 	VbNvSetup(&vnc);
@@ -163,7 +168,7 @@ VbError_t VbInit(VbCommonParams *cparams, VbInitParams *iparams)
 		VbNvGet(&vnc, VBNV_DISABLE_DEV_REQUEST, &disable_dev_request);
 
 		/* Allow GBB flag to override dev switch */
-		if (gbb->flags & GBB_FLAG_FORCE_DEV_SWITCH_ON)
+		if (gbb.flags & GBB_FLAG_FORCE_DEV_SWITCH_ON)
 			is_hw_dev = 1;
 
 		/* Have we been explicitly asked to clear the TPM owner? */
@@ -242,11 +247,11 @@ VbError_t VbInit(VbCommonParams *cparams, VbInitParams *iparams)
 	}
 
 	/* Allow BIOS to load arbitrary option ROMs? */
-	if (gbb->flags & GBB_FLAG_LOAD_OPTION_ROMS)
+	if (gbb.flags & GBB_FLAG_LOAD_OPTION_ROMS)
 		iparams->out_flags |= VB_INIT_OUT_ENABLE_OPROM;
 
 	/* Factory may need to boot custom OSes when the dev-switch is on */
-	if (is_dev && (gbb->flags & GBB_FLAG_ENABLE_ALTERNATE_OS))
+	if (is_dev && (gbb.flags & GBB_FLAG_ENABLE_ALTERNATE_OS))
 		iparams->out_flags |= VB_INIT_OUT_ENABLE_ALTERNATE_OS;
 
 	/* Set output flags */
diff --git a/firmware/lib/vboot_api_kernel.c b/firmware/lib/vboot_api_kernel.c
index 7ad45929..4f0b3f20 100644
--- a/firmware/lib/vboot_api_kernel.c
+++ b/firmware/lib/vboot_api_kernel.c
@@ -7,8 +7,10 @@
 
 #include "sysincludes.h"
 
+#include "gbb_access.h"
 #include "gbb_header.h"
 #include "load_kernel_fw.h"
+#include "region.h"
 #include "rollback_index.h"
 #include "utility.h"
 #include "vboot_api.h"
@@ -97,7 +99,7 @@ uint32_t VbTryLoadKernel(VbCommonParams *cparams, LoadKernelParams *p,
 		p->disk_handle = disk_info[i].handle;
 		p->bytes_per_lba = disk_info[i].bytes_per_lba;
 		p->ending_lba = disk_info[i].lba_count - 1;
-		retval = LoadKernel(p);
+		retval = LoadKernel(p, cparams);
 		VBDEBUG(("VbTryLoadKernel() LoadKernel() = %d\n", retval));
 
 		/*
@@ -173,8 +175,7 @@ VbError_t VbBootNormal(VbCommonParams *cparams, LoadKernelParams *p)
 
 VbError_t VbBootDeveloper(VbCommonParams *cparams, LoadKernelParams *p)
 {
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
+	GoogleBinaryBlockHeader *gbb = cparams->gbb;
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)cparams->shared_data_blob;
 	uint32_t allow_usb = 0, allow_legacy = 0, ctrl_d_pressed = 0;
@@ -807,13 +808,25 @@ VbError_t VbEcSoftwareSync(VbCommonParams *cparams)
 	return VBERROR_SUCCESS;
 }
 
+/* This function is also used by tests */
+void VbApiKernelFree(VbCommonParams *cparams)
+{
+	/* VbSelectAndLoadKernel() always allocates this, tests don't */
+	if (cparams->gbb) {
+		VbExFree(cparams->gbb);
+		cparams->gbb = NULL;
+	}
+	if (cparams->bmp) {
+		VbExFree(cparams->bmp);
+		cparams->bmp = NULL;
+	}
+}
+
 VbError_t VbSelectAndLoadKernel(VbCommonParams *cparams,
                                 VbSelectAndLoadKernelParams *kparams)
 {
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)cparams->shared_data_blob;
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
 	VbError_t retval = VBERROR_SUCCESS;
 	LoadKernelParams p;
 	uint32_t tpm_status = 0;
@@ -831,9 +844,15 @@ VbError_t VbSelectAndLoadKernel(VbCommonParams *cparams,
 	kparams->bootloader_size = 0;
 	Memset(kparams->partition_guid, 0, sizeof(kparams->partition_guid));
 
+	cparams->bmp = NULL;
+	cparams->gbb = VbExMalloc(sizeof(*cparams->gbb));
+	retval = VbGbbReadHeader_static(cparams, cparams->gbb);
+	if (VBERROR_SUCCESS != retval)
+		goto VbSelectAndLoadKernel_exit;
+
 	/* Do EC software sync if necessary */
 	if ((shared->flags & VBSD_EC_SOFTWARE_SYNC) &&
-	    !(gbb->flags & GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC)) {
+	    !(cparams->gbb->flags & GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC)) {
 		retval = VbEcSoftwareSync(cparams);
 		if (retval != VBERROR_SUCCESS)
 			goto VbSelectAndLoadKernel_exit;
@@ -982,6 +1001,8 @@ VbError_t VbSelectAndLoadKernel(VbCommonParams *cparams,
 
  VbSelectAndLoadKernel_exit:
 
+	VbApiKernelFree(cparams);
+
 	VbNvTeardown(&vnc);
 	if (vnc.raw_changed)
 		VbExNvStorageWrite(vnc.raw);
diff --git a/firmware/lib/vboot_audio.c b/firmware/lib/vboot_audio.c
index 5414f325..e24a039b 100644
--- a/firmware/lib/vboot_audio.c
+++ b/firmware/lib/vboot_audio.c
@@ -208,8 +208,7 @@ static void VbGetDevMusicNotes(VbAudioContext *audio, int use_short)
  */
 VbAudioContext *VbAudioOpen(VbCommonParams *cparams)
 {
-	GoogleBinaryBlockHeader* gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
+	GoogleBinaryBlockHeader *gbb = cparams->gbb;
 	VbAudioContext *audio = &au;
 	int use_short = 0;
 	uint64_t a, b;
diff --git a/firmware/lib/vboot_display.c b/firmware/lib/vboot_display.c
index f79dfe13..910c60a0 100644
--- a/firmware/lib/vboot_display.c
+++ b/firmware/lib/vboot_display.c
@@ -8,7 +8,9 @@
 #include "sysincludes.h"
 
 #include "bmpblk_font.h"
+#include "gbb_access.h"
 #include "gbb_header.h"
+#include "region.h"
 #include "utility.h"
 #include "vboot_api.h"
 #include "vboot_common.h"
@@ -20,49 +22,20 @@ static uint32_t disp_width = 0, disp_height = 0;
 
 VbError_t VbGetLocalizationCount(VbCommonParams *cparams, uint32_t *count)
 {
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
-	BmpBlockHeader *hdr;
+	BmpBlockHeader hdr;
+	VbError_t ret;
 
 	/* Default to 0 on error */
 	*count = 0;
 
-	/* Make sure bitmap data is inside the GBB and is non-zero in size */
-	if (0 == gbb->bmpfv_size ||
-	    gbb->bmpfv_offset > cparams->gbb_size ||
-	    gbb->bmpfv_offset + gbb->bmpfv_size > cparams->gbb_size) {
-		return VBERROR_INVALID_GBB;
-	}
-
-	/* Sanity-check the bitmap block header */
-	hdr = (BmpBlockHeader *)(((uint8_t *)gbb) + gbb->bmpfv_offset);
-	if ((0 != Memcmp(hdr->signature, BMPBLOCK_SIGNATURE,
-			 BMPBLOCK_SIGNATURE_SIZE)) ||
-	    (hdr->major_version > BMPBLOCK_MAJOR_VERSION) ||
-	    ((hdr->major_version == BMPBLOCK_MAJOR_VERSION) &&
-	     (hdr->minor_version > BMPBLOCK_MINOR_VERSION))) {
-		return VBERROR_INVALID_BMPFV;
-	}
+	ret = VbGbbReadBmpHeader(cparams, &hdr);
+	if (ret)
+		return ret;
 
-	*count = hdr->number_of_localizations;
+	*count = hdr.number_of_localizations;
 	return VBERROR_SUCCESS;
 }
 
-const char *VbHWID(VbCommonParams *cparams)
-{
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
-
-	if (0 == gbb->hwid_size ||
-	    gbb->hwid_offset > cparams->gbb_size ||
-	    gbb->hwid_offset + gbb->hwid_size > cparams->gbb_size) {
-		VBDEBUG(("VbHWID(): invalid hwid offset/size\n"));
-		return "{INVALID}";
-	}
-
-	return (char *)((uint8_t *)gbb + gbb->hwid_offset);
-}
-
 /*
  * TODO: We could cache the font info to speed things up, by making the
  * in-memory font structure distinct from the in-flash version.  We'll do that
@@ -164,62 +137,24 @@ void VbRenderTextAtPos(const char *text, int right_to_left,
 	}
 }
 
-#define OUTBUF_LEN 128
-
 VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
                                  VbNvContext *vncptr)
 {
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
-	static uint8_t *bmpfv;
-	void *fullimage = NULL;
-	BmpBlockHeader *hdr;
-	ScreenLayout *layout;
-	ImageInfo *image_info;
+	char *fullimage = NULL;
+	BmpBlockHeader hdr;
 	uint32_t screen_index;
 	uint32_t localization = 0;
 	VbError_t retval = VBERROR_UNKNOWN;   /* Assume error until proven ok */
 	uint32_t inoutsize;
-	uint32_t offset;
 	uint32_t i;
 	VbFont_t *font;
 	const char *text_to_show;
 	int rtol = 0;
-	char outbuf[OUTBUF_LEN] = "";
-	uint32_t used = 0;
+	VbError_t ret;
 
-	/* Make sure bitmap data is inside the GBB and is non-zero in size */
-	if (0 == gbb->bmpfv_size ||
-	    gbb->bmpfv_offset > cparams->gbb_size ||
-	    gbb->bmpfv_offset + gbb->bmpfv_size > cparams->gbb_size) {
-		VBDEBUG(("VbDisplayScreenFromGBB(): "
-			 "invalid bmpfv offset/size\n"));
-		return VBERROR_INVALID_GBB;
-	}
-
-	/* Copy bitmap data from GBB into RAM for speed */
-	if (!bmpfv) {
-#ifdef COPY_BMP_DATA
-		bmpfv = (uint8_t *)VbExMalloc(gbb->bmpfv_size);
-		Memcpy(bmpfv, ((uint8_t *)gbb) + gbb->bmpfv_offset,
-		       gbb->bmpfv_size);
-#else
-		bmpfv = ((uint8_t *)gbb) + gbb->bmpfv_offset;
-#endif
-	}
-
-	/* Sanity-check the bitmap block header */
-	hdr = (BmpBlockHeader *)bmpfv;
-	if ((0 != Memcmp(hdr->signature, BMPBLOCK_SIGNATURE,
-			 BMPBLOCK_SIGNATURE_SIZE)) ||
-	    (hdr->major_version > BMPBLOCK_MAJOR_VERSION) ||
-	    ((hdr->major_version == BMPBLOCK_MAJOR_VERSION) &&
-	     (hdr->minor_version > BMPBLOCK_MINOR_VERSION))) {
-		VBDEBUG(("VbDisplayScreenFromGBB(): "
-			 "invalid/too new bitmap header\n"));
-		retval = VBERROR_INVALID_BMPFV;
-		goto VbDisplayScreenFromGBB_exit;
-	}
+	ret = VbGbbReadBmpHeader(cparams, &hdr);
+	if (ret)
+		return ret;
 
 	/*
 	 * Translate screen ID into index.  Note that not all screens are in
@@ -263,7 +198,7 @@ VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
 		goto VbDisplayScreenFromGBB_exit;
 	}
 
-	if (screen_index >= hdr->number_of_screenlayouts) {
+	if (screen_index >= hdr.number_of_screenlayouts) {
 		VBDEBUG(("VbDisplayScreenFromGBB(): "
 			 "screen %d index %d not in the GBB\n",
 			 (int)screen, (int)screen_index));
@@ -273,48 +208,31 @@ VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
 
 	/* Clip localization to number of localizations present in the GBB */
 	VbNvGet(vncptr, VBNV_LOCALIZATION_INDEX, &localization);
-	if (localization >= hdr->number_of_localizations) {
+	if (localization >= hdr.number_of_localizations) {
 		localization = 0;
 		VbNvSet(vncptr, VBNV_LOCALIZATION_INDEX, localization);
 	}
 
-	/*
-	 * Calculate offset of screen layout = start of screen stuff + correct
-	 * locale + correct screen.
-	 */
-	offset = sizeof(BmpBlockHeader) +
-		localization * hdr->number_of_screenlayouts *
-			sizeof(ScreenLayout) +
-		screen_index * sizeof(ScreenLayout);
-	layout = (ScreenLayout *)(bmpfv + offset);
-
 	/* Display all bitmaps for the image */
 	for (i = 0; i < MAX_IMAGE_IN_LAYOUT; i++) {
-		if (!layout->images[i].image_info_offset)
+		ScreenLayout layout;
+		ImageInfo image_info;
+		char hwid[256];
+
+		ret = VbGbbReadImage(cparams, localization, screen_index,
+				    i, &layout, &image_info,
+				    &fullimage, &inoutsize);
+		if (ret == VBERROR_NO_IMAGE_PRESENT) {
 			continue;
-
-		offset = layout->images[i].image_info_offset;
-		image_info = (ImageInfo *)(bmpfv + offset);
-		fullimage = bmpfv + offset + sizeof(ImageInfo);
-		inoutsize = image_info->original_size;
-		if (inoutsize &&
-		    image_info->compression != COMPRESS_NONE) {
-			fullimage = VbExMalloc(inoutsize);
-			retval = VbExDecompress(
-					bmpfv + offset + sizeof(ImageInfo),
-					image_info->compressed_size,
-					image_info->compression,
-					fullimage, &inoutsize);
-			if (VBERROR_SUCCESS != retval) {
-				VbExFree(fullimage);
-				goto VbDisplayScreenFromGBB_exit;
-			}
+		} else if (ret) {
+			retval = ret;
+			goto VbDisplayScreenFromGBB_exit;
 		}
 
-		switch(image_info->format) {
+		switch(image_info.format) {
 		case FORMAT_BMP:
-			retval = VbExDisplayImage(layout->images[i].x,
-						  layout->images[i].y,
+			retval = VbExDisplayImage(layout.images[i].x,
+						  layout.images[i].y,
 						  fullimage, inoutsize);
 			break;
 
@@ -323,21 +241,23 @@ VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
 			 * The uncompressed blob is our font structure. Cache
 			 * it as needed.
 			 */
-			font = VbInternalizeFontData(fullimage);
+			font = VbInternalizeFontData(
+					(FontArrayHeader *)fullimage);
 
 			/* TODO: handle text in general here */
-			if (TAG_HWID == image_info->tag ||
-			    TAG_HWID_RTOL == image_info->tag) {
-				text_to_show = VbHWID(cparams);
-				rtol = (TAG_HWID_RTOL == image_info->tag);
+			if (TAG_HWID == image_info.tag ||
+			    TAG_HWID_RTOL == image_info.tag) {
+				VbRegionReadHWID(cparams, hwid, sizeof(hwid));
+				text_to_show = hwid;
+				rtol = (TAG_HWID_RTOL == image_info.tag);
 			} else {
 				text_to_show = "";
 				rtol = 0;
 			}
 
 			VbRenderTextAtPos(text_to_show, rtol,
-					  layout->images[i].x,
-					  layout->images[i].y, font);
+					  layout.images[i].x,
+					  layout.images[i].y, font);
 
 			VbDoneWithFontForNow(font);
 			break;
@@ -345,12 +265,11 @@ VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
 		default:
 			VBDEBUG(("VbDisplayScreenFromGBB(): "
 				 "unsupported ImageFormat %d\n",
-				 image_info->format));
+				 image_info.format));
 			retval = VBERROR_INVALID_GBB;
 		}
 
-		if (COMPRESS_NONE != image_info->compression)
-			VbExFree(fullimage);
+		VbExFree(fullimage);
 
 		if (VBERROR_SUCCESS != retval)
 			goto VbDisplayScreenFromGBB_exit;
@@ -359,29 +278,15 @@ VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
 	/* Successful if all bitmaps displayed */
 	retval = VBERROR_SUCCESS;
 
-	/*
-	 * If GBB flags is nonzero, complain because that's something that the
-	 * factory MUST fix before shipping. We only have to do this here,
-	 * because it's obvious that something is wrong if we're not displaying
-	 * screens from the GBB.
-	 */
-	if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1 &&
-	    (gbb->flags != 0)) {
-		used += StrnAppend(outbuf + used, "gbb.flags is nonzero: 0x",
-				OUTBUF_LEN - used);
-		used += Uint64ToString(outbuf + used, OUTBUF_LEN - used,
-				       gbb->flags, 16, 8);
-		used += StrnAppend(outbuf + used, "\n", OUTBUF_LEN - used);
-		(void)VbExDisplayDebugInfo(outbuf);
-	}
+	VbRegionCheckVersion(cparams);
 
  VbDisplayScreenFromGBB_exit:
 	VBDEBUG(("leaving VbDisplayScreenFromGBB() with %d\n",retval));
 	return retval;
 }
 
-VbError_t VbDisplayScreen(VbCommonParams *cparams, uint32_t screen, int force,
-                          VbNvContext *vncptr)
+VbError_t VbDisplayScreen(VbCommonParams *cparams, uint32_t screen,
+			  int force, VbNvContext *vncptr)
 {
 	VbError_t retval;
 
@@ -403,7 +308,8 @@ VbError_t VbDisplayScreen(VbCommonParams *cparams, uint32_t screen, int force,
 	disp_current_screen = screen;
 
 	/* Look in the GBB first */
-	if (VBERROR_SUCCESS == VbDisplayScreenFromGBB(cparams, screen, vncptr))
+	if (VBERROR_SUCCESS == VbDisplayScreenFromGBB(cparams, screen,
+						      vncptr))
 		return VBERROR_SUCCESS;
 
 	/* If screen wasn't in the GBB bitmaps, fall back to a default */
@@ -571,29 +477,22 @@ VbError_t VbDisplayDebugInfo(VbCommonParams *cparams, VbNvContext *vncptr)
 {
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)cparams->shared_data_blob;
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
+	GoogleBinaryBlockHeader *gbb = cparams->gbb;
 	char buf[DEBUG_INFO_SIZE] = "";
 	char sha1sum[SHA1_DIGEST_SIZE * 2 + 1];
+	char hwid[256];
 	uint32_t used = 0;
+	VbPublicKey *key;
+	VbError_t ret;
 	uint32_t i;
 
 	/* Redisplay current screen to overwrite any previous debug output */
 	VbDisplayScreen(cparams, disp_current_screen, 1, vncptr);
 
 	/* Add hardware ID */
+	VbRegionReadHWID(cparams, hwid, sizeof(hwid));
 	used += StrnAppend(buf + used, "HWID: ", DEBUG_INFO_SIZE - used);
-	if (0 == gbb->hwid_size ||
-	    gbb->hwid_offset > cparams->gbb_size ||
-	    gbb->hwid_offset + gbb->hwid_size > cparams->gbb_size) {
-		VBDEBUG(("VbDisplayDebugInfo(): invalid hwid offset/size\n"));
-		used += StrnAppend(buf + used,
-				"(INVALID)", DEBUG_INFO_SIZE - used);
-  } else {
-		used += StrnAppend(buf + used,
-				(char *)((uint8_t *)gbb + gbb->hwid_offset),
-				DEBUG_INFO_SIZE - used);
-  }
+	used += StrnAppend(buf + used, hwid, DEBUG_INFO_SIZE - used);
 
 	/* Add recovery reason */
 	used += StrnAppend(buf + used,
@@ -654,15 +553,25 @@ VbError_t VbDisplayDebugInfo(VbCommonParams *cparams, VbNvContext *vncptr)
 	}
 
 	/* Add sha1sum for Root & Recovery keys */
-	FillInSha1Sum(sha1sum,
-		(VbPublicKey *)((uint8_t *)gbb + gbb->rootkey_offset));
-	used += StrnAppend(buf + used, "\ngbb.rootkey: ", DEBUG_INFO_SIZE - used);
-	used += StrnAppend(buf + used, sha1sum, DEBUG_INFO_SIZE - used);
-	FillInSha1Sum(sha1sum,
-		(VbPublicKey *)((uint8_t *)gbb + gbb->recovery_key_offset));
-	used += StrnAppend(buf + used,
-			"\ngbb.recovery_key: ", DEBUG_INFO_SIZE - used);
-	used += StrnAppend(buf + used, sha1sum, DEBUG_INFO_SIZE - used);
+	ret = VbGbbReadRootKey(cparams, &key);
+	if (!ret) {
+		FillInSha1Sum(sha1sum, key);
+		VbExFree(key);
+		used += StrnAppend(buf + used, "\ngbb.rootkey: ",
+				   DEBUG_INFO_SIZE - used);
+		used += StrnAppend(buf + used, sha1sum,
+				   DEBUG_INFO_SIZE - used);
+	}
+
+	ret = VbGbbReadRecoveryKey(cparams, &key);
+	if (!ret) {
+		FillInSha1Sum(sha1sum, key);
+		VbExFree(key);
+		used += StrnAppend(buf + used, "\ngbb.recovery_key: ",
+				   DEBUG_INFO_SIZE - used);
+		used += StrnAppend(buf + used, sha1sum,
+				   DEBUG_INFO_SIZE - used);
+	}
 
 	/* If we're in dev-mode, show the kernel subkey that we expect, too. */
 	if (0 == shared->recovery_reason) {
diff --git a/firmware/lib/vboot_firmware.c b/firmware/lib/vboot_firmware.c
index c5000cb7..e6a31fa9 100644
--- a/firmware/lib/vboot_firmware.c
+++ b/firmware/lib/vboot_firmware.c
@@ -8,6 +8,8 @@
 
 #include "sysincludes.h"
 
+#include "region.h"
+#include "gbb_access.h"
 #include "gbb_header.h"
 #include "load_firmware_fw.h"
 #include "utility.h"
@@ -41,9 +43,8 @@ int LoadFirmware(VbCommonParams *cparams, VbSelectFirmwareParams *fparams,
 {
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)cparams->shared_data_blob;
-	GoogleBinaryBlockHeader *gbb =
-		(GoogleBinaryBlockHeader *)cparams->gbb_data;
-	VbPublicKey *root_key;
+	GoogleBinaryBlockHeader *gbb = cparams->gbb;
+	VbPublicKey *root_key = NULL;
 	VbLoadFirmwareInternal *lfi;
 
 	uint32_t try_b_count;
@@ -62,12 +63,12 @@ int LoadFirmware(VbCommonParams *cparams, VbSelectFirmwareParams *fparams,
 	VBDEBUG(("LoadFirmware started...\n"));
 
 	/* Must have a root key from the GBB */
-	if (!gbb) {
+	retval = VbGbbReadRootKey(cparams, &root_key);
+	if (retval) {
 		VBDEBUG(("No GBB\n"));
 		retval = VBERROR_INVALID_GBB;
 		goto LoadFirmwareExit;
 	}
-	root_key = (VbPublicKey *)((uint8_t *)gbb + gbb->rootkey_offset);
 
 	/* Parse flags */
 	is_dev = (shared->flags & VBSD_BOOT_DEV_SWITCH_ON ? 1 : 0);
@@ -345,6 +346,8 @@ int LoadFirmware(VbCommonParams *cparams, VbSelectFirmwareParams *fparams,
 	}
 
  LoadFirmwareExit:
+	VbExFree(root_key);
+
 	/* Store recovery request, if any */
 	VbNvSet(vnc, VBNV_RECOVERY_REQUEST, VBERROR_SUCCESS != retval ?
 		recovery : VBNV_RECOVERY_NOT_REQUESTED);
diff --git a/firmware/lib/vboot_kernel.c b/firmware/lib/vboot_kernel.c
index aa1e41e3..72cd2cc1 100644
--- a/firmware/lib/vboot_kernel.c
+++ b/firmware/lib/vboot_kernel.c
@@ -10,6 +10,8 @@
 
 #include "cgptlib.h"
 #include "cgptlib_internal.h"
+#include "region.h"
+#include "gbb_access.h"
 #include "gbb_header.h"
 #include "load_kernel_fw.h"
 #include "utility.h"
@@ -159,15 +161,14 @@ fail:
 	return ret;
 }
 
-VbError_t LoadKernel(LoadKernelParams *params)
+VbError_t LoadKernel(LoadKernelParams *params, VbCommonParams *cparams)
 {
 	VbSharedDataHeader *shared =
 		(VbSharedDataHeader *)params->shared_data_blob;
 	VbSharedDataKernelCall *shcall = NULL;
 	VbNvContext* vnc = params->nv_context;
-	GoogleBinaryBlockHeader* gbb =
-		(GoogleBinaryBlockHeader *)params->gbb_data;
-	VbPublicKey* kernel_subkey;
+	VbPublicKey* kernel_subkey = NULL;
+	int free_kernel_subkey = 0;
 	GptData gpt;
 	uint64_t part_start, part_size;
 	uint64_t blba;
@@ -233,8 +234,10 @@ VbError_t LoadKernel(LoadKernelParams *params)
 
 	if (kBootRecovery == boot_mode) {
 		/* Use the recovery key to verify the kernel */
-		kernel_subkey = (VbPublicKey*)
-			((uint8_t*)gbb + gbb->recovery_key_offset);
+		retval = VbGbbReadRecoveryKey(cparams, &kernel_subkey);
+		if (VBERROR_SUCCESS != retval)
+			goto LoadKernelExit;
+		free_kernel_subkey = 1;
 	} else {
 		/* Use the kernel subkey passed from LoadFirmware(). */
 		kernel_subkey = &shared->kernel_subkey;
@@ -632,5 +635,8 @@ VbError_t LoadKernel(LoadKernelParams *params)
 	/* Store how much shared data we used, if any */
 	params->shared_data_size = shared->data_used;
 
+	if (free_kernel_subkey)
+		VbExFree(kernel_subkey);
+
 	return retval;
 }
diff --git a/firmware/linktest/main.c b/firmware/linktest/main.c
index bdf1483a..2ff8e9d7 100644
--- a/firmware/linktest/main.c
+++ b/firmware/linktest/main.c
@@ -27,7 +27,7 @@ int main(void)
   LoadFirmware(0, 0, 0);
 
   /* load_kernel_fw.h */
-  LoadKernel(0);
+  LoadKernel(0, 0);
 
   /* rollback_index.h */
   RollbackS3Resume();
diff --git a/firmware/stub/vboot_api_stub_region.c b/firmware/stub/vboot_api_stub_region.c
new file mode 100644
index 00000000..07142035
--- /dev/null
+++ b/firmware/stub/vboot_api_stub_region.c
@@ -0,0 +1,21 @@
+/* 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.
+ *
+ * Stub implementations of region API function.
+ */
+
+#include <stdint.h>
+
+#define _STUB_IMPLEMENTATION_
+
+#include <stdlib.h>
+
+#include "vboot_api.h"
+
+VbError_t VbExRegionRead(VbCommonParams *cparams,
+			 enum vb_firmware_region region, uint32_t offset,
+			 uint32_t size, void *buf)
+{
+	return VBERROR_SUCCESS;
+}
diff --git a/tests/vboot_api_devmode_tests.c b/tests/vboot_api_devmode_tests.c
index b10bba67..61f0de14 100644
--- a/tests/vboot_api_devmode_tests.c
+++ b/tests/vboot_api_devmode_tests.c
@@ -153,6 +153,7 @@ static void ResetMocks(void) {
   cparams.shared_data_size = sizeof(shared_data);
   cparams.shared_data_blob = shared_data;
   cparams.gbb_data = &gbb;
+  cparams.gbb = &gbb;
 
   Memset(&lkparams, 0, sizeof(lkparams));
 
diff --git a/tests/vboot_api_firmware_tests.c b/tests/vboot_api_firmware_tests.c
index 9e7c441d..4a97b930 100644
--- a/tests/vboot_api_firmware_tests.c
+++ b/tests/vboot_api_firmware_tests.c
@@ -9,6 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "gbb_header.h"
 #include "host_common.h"
 #include "rollback_index.h"
 #include "test_common.h"
@@ -23,6 +24,7 @@
 /* Mock data */
 static VbCommonParams cparams;
 static VbSelectFirmwareParams fparams;
+static GoogleBinaryBlockHeader gbb;
 static VbNvContext vnc;
 static uint8_t shared_data[VB_SHARED_DATA_MIN_SIZE];
 static VbSharedDataHeader* shared = (VbSharedDataHeader*)shared_data;
@@ -49,6 +51,11 @@ static void ResetMocks(void) {
 
   Memset(&fparams, 0, sizeof(fparams));
 
+  Memset(&gbb, 0, sizeof(gbb));
+  cparams.gbb_data = &gbb;
+  cparams.gbb_size = sizeof(gbb);
+  cparams.gbb = &gbb;
+
   Memset(&vnc, 0, sizeof(vnc));
   VbNvSetup(&vnc);
   VbNvTeardown(&vnc);  /* So CRC gets generated */
diff --git a/tests/vboot_api_init_tests.c b/tests/vboot_api_init_tests.c
index 6451bd81..9aa34b41 100644
--- a/tests/vboot_api_init_tests.c
+++ b/tests/vboot_api_init_tests.c
@@ -40,6 +40,7 @@ static void ResetMocks(void)
 	cparams.shared_data_size = sizeof(shared_data);
 	cparams.shared_data_blob = shared_data;
 	cparams.gbb_data = &gbb;
+	cparams.gbb_size = sizeof(gbb);
 
 	Memset(&gbb, 0, sizeof(gbb));
 	gbb.major_version = GBB_MAJOR_VER;
diff --git a/tests/vboot_api_kernel2_tests.c b/tests/vboot_api_kernel2_tests.c
index c1572c2f..323f5f66 100644
--- a/tests/vboot_api_kernel2_tests.c
+++ b/tests/vboot_api_kernel2_tests.c
@@ -49,6 +49,7 @@ static void ResetMocks(void)
 	cparams.shared_data_size = sizeof(shared_data);
 	cparams.shared_data_blob = shared_data;
 	cparams.gbb_data = &gbb;
+	cparams.gbb = &gbb;
 
 	Memset(&gbb, 0, sizeof(gbb));
 	gbb.major_version = GBB_MAJOR_VER;
diff --git a/tests/vboot_api_kernel4_tests.c b/tests/vboot_api_kernel4_tests.c
index e2155f56..82b15016 100644
--- a/tests/vboot_api_kernel4_tests.c
+++ b/tests/vboot_api_kernel4_tests.c
@@ -41,6 +41,7 @@ static void ResetMocks(void)
 	cparams.shared_data_size = sizeof(shared_data);
 	cparams.shared_data_blob = shared_data;
 	cparams.gbb_data = &gbb;
+	cparams.gbb_size = sizeof(gbb);
 
 	Memset(&kparams, 0, sizeof(kparams));
 
diff --git a/tests/vboot_api_kernel_tests.c b/tests/vboot_api_kernel_tests.c
index 87dc6cfa..8cfc1cb4 100644
--- a/tests/vboot_api_kernel_tests.c
+++ b/tests/vboot_api_kernel_tests.c
@@ -269,7 +269,7 @@ VbError_t VbExDiskFreeInfo(VbDiskInfo *infos,
 	return VBERROR_SUCCESS;
 }
 
-VbError_t LoadKernel(LoadKernelParams *params)
+VbError_t LoadKernel(LoadKernelParams *params, VbCommonParams *cparams)
 {
 	got_find_disk = (const char *)params->disk_handle;
 	VBDEBUG(("%s(%d): got_find_disk = %s\n", __FUNCTION__,
diff --git a/tests/vboot_audio_tests.c b/tests/vboot_audio_tests.c
index 23667b1e..d674931d 100644
--- a/tests/vboot_audio_tests.c
+++ b/tests/vboot_audio_tests.c
@@ -62,6 +62,7 @@ static void ResetMocks(void) {
   VBDEBUG(("ResetMocks()\n"));
   Memset(&cparams, 0, sizeof(cparams));
   cparams.gbb_data = &gbb;
+  cparams.gbb = &gbb;
   Memset(&gbb, 0, sizeof(gbb));
   gbb.major_version = GBB_MAJOR_VER;
   gbb.minor_version = GBB_MINOR_VER;
diff --git a/tests/vboot_display_tests.c b/tests/vboot_display_tests.c
index 8e4a3a27..8086d319 100644
--- a/tests/vboot_display_tests.c
+++ b/tests/vboot_display_tests.c
@@ -13,9 +13,11 @@
 #include "bmpblk_font.h"
 #include "gbb_header.h"
 #include "host_common.h"
+#include "region.h"
 #include "test_common.h"
 #include "vboot_common.h"
 #include "vboot_display.h"
+#include "vboot_kernel.h"
 #include "vboot_nvstorage.h"
 
 /* Mock data */
@@ -59,6 +61,20 @@ static void ResetMocks(void)
 	cparams.gbb_data = gbb;
 	cparams.gbb_size = sizeof(gbb_data);
 
+	/*
+	 * Note, VbApiKernelFree() expects this to be allocated by
+	 * VbExMalloc(), so we cannot just assign it staticly.
+	 */
+	cparams.gbb = VbExMalloc(sizeof(*gbb));
+	gbb->header_size = sizeof(*gbb);
+	gbb->rootkey_offset = gbb_used;
+	gbb->rootkey_size = 64;
+	gbb_used += 64;
+	gbb->recovery_key_offset = gbb_used;
+	gbb->recovery_key_size = 64;
+	gbb_used += 64;
+	memcpy(cparams.gbb, gbb, sizeof(*gbb));
+
 	Memset(&vnc, 0, sizeof(vnc));
 	VbNvSetup(&vnc);
 	VbNvTeardown(&vnc);                   /* So CRC gets generated */
@@ -81,6 +97,7 @@ VbError_t VbExDisplayDebugInfo(const char *info_str)
 /* Test displaying debug info */
 static void DebugInfoTest(void)
 {
+	char hwid[VB_REGION_HWID_LEN];
 	int i;
 
 	/* Recovery string should be non-null for any code */
@@ -89,28 +106,39 @@ static void DebugInfoTest(void)
 
 	/* HWID should come from the gbb */
 	ResetMocks();
-	TEST_EQ(strcmp(VbHWID(&cparams), "Test HWID"), 0, "HWID");
+	VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
+	TEST_EQ(strcmp(hwid, "Test HWID"), 0, "HWID");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
 	cparams.gbb_size = 0;
-	TEST_EQ(strcmp(VbHWID(&cparams), "{INVALID}"), 0, "HWID bad gbb");
+	VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
+	TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID bad gbb");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
-	gbb->hwid_size = 0;
-	TEST_EQ(strcmp(VbHWID(&cparams), "{INVALID}"), 0, "HWID missing");
+	cparams.gbb->hwid_size = 0;
+	VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
+	TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID missing");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
-	gbb->hwid_offset = cparams.gbb_size + 1;
-	TEST_EQ(strcmp(VbHWID(&cparams), "{INVALID}"), 0, "HWID past end");
+	cparams.gbb->hwid_offset = cparams.gbb_size + 1;
+	VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
+	TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID past end");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
-	gbb->hwid_size = cparams.gbb_size;
-	TEST_EQ(strcmp(VbHWID(&cparams), "{INVALID}"), 0, "HWID overflow");
+	cparams.gbb->hwid_size = cparams.gbb_size;
+	VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
+	TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID overflow");
+	VbApiKernelFree(&cparams);
 
 	/* Display debug info */
 	ResetMocks();
 	VbDisplayDebugInfo(&cparams, &vnc);
 	TEST_NEQ(*debug_info, '\0', "Some debug info was displayed");
+	VbApiKernelFree(&cparams);
 }
 
 /* Test localization */
@@ -119,21 +147,23 @@ static void LocalizationTest(void)
 	uint32_t count = 6;
 
 	ResetMocks();
-	gbb->bmpfv_size = 0;
+	cparams.gbb->bmpfv_size = 0;
 	TEST_EQ(VbGetLocalizationCount(&cparams, &count),
 		VBERROR_INVALID_GBB, "VbGetLocalizationCount bad gbb");
 	TEST_EQ(count, 0, "  count");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
 	bhdr->signature[0] ^= 0x5a;
 	TEST_EQ(VbGetLocalizationCount(&cparams, &count),
 		VBERROR_INVALID_BMPFV, "VbGetLocalizationCount bad bmpfv");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
 	TEST_EQ(VbGetLocalizationCount(&cparams, &count), 0,
 		"VbGetLocalizationCount()");
 	TEST_EQ(count, 3, "  count");
-
+	VbApiKernelFree(&cparams);
 }
 
 /* Test display key checking */
@@ -144,10 +174,12 @@ static void DisplayKeyTest(void)
 	ResetMocks();
 	VbCheckDisplayKey(&cparams, 'q', &vnc);
 	TEST_EQ(*debug_info, '\0', "DisplayKey q = does nothing");
+	VbApiKernelFree(&cparams);
 
 	ResetMocks();
 	VbCheckDisplayKey(&cparams, '\t', &vnc);
 	TEST_NEQ(*debug_info, '\0', "DisplayKey tab = display");
+	VbApiKernelFree(&cparams);
 
 	/* Toggle localization */
 	ResetMocks();
@@ -165,6 +197,7 @@ static void DisplayKeyTest(void)
 	VbCheckDisplayKey(&cparams, VB_KEY_UP, &vnc);
 	VbNvGet(&vnc, VBNV_LOCALIZATION_INDEX, &u);
 	TEST_EQ(u, 0, "DisplayKey up");
+	VbApiKernelFree(&cparams);
 
 	/* Reset localization if localization count is invalid */
 	ResetMocks();
@@ -174,7 +207,7 @@ static void DisplayKeyTest(void)
 	VbCheckDisplayKey(&cparams, VB_KEY_UP, &vnc);
 	VbNvGet(&vnc, VBNV_LOCALIZATION_INDEX, &u);
 	TEST_EQ(u, 0, "DisplayKey invalid");
-
+	VbApiKernelFree(&cparams);
 }
 
 static void FontTest(void)
diff --git a/tests/vboot_firmware_tests.c b/tests/vboot_firmware_tests.c
index f6b96fec..724e7f8b 100644
--- a/tests/vboot_firmware_tests.c
+++ b/tests/vboot_firmware_tests.c
@@ -8,6 +8,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "gbb_header.h"
 #include "host_common.h"
@@ -33,13 +34,20 @@ static uint8_t* digest_returned;
 static uint8_t* digest_expect_ptr;
 static int hash_fw_index;
 
+#define TEST_KEY_DATA	\
+	"Test contents for the root key this should be 64 chars long."
+
 /* Reset mock data (for use before each test) */
 static void ResetMocks(void) {
+  VbPublicKey *root_key;
+  uint8_t *root_key_data;
   int i;
 
   Memset(&cparams, 0, sizeof(cparams));
   cparams.shared_data_blob = shared_data;
   cparams.gbb_data = gbb_data;
+  cparams.gbb_size = sizeof(gbb_data);
+  cparams.gbb = gbb;
 
   Memset(&fparams, 0, sizeof(fparams));
   fparams.verification_block_A = vblock;
@@ -75,6 +83,14 @@ static void ResetMocks(void) {
 
   Memset(&gbb_data, 0, sizeof(gbb_data));
   gbb->rootkey_offset = sizeof(GoogleBinaryBlockHeader);
+  root_key = (VbPublicKey *)(gbb_data + gbb->rootkey_offset);
+  root_key_data = (uint8_t *)(root_key + 1);
+  strcpy((char *)root_key_data, TEST_KEY_DATA);
+  PublicKeyInit(root_key, (uint8_t *)root_key_data, sizeof(TEST_KEY_DATA));
+
+  gbb->major_version = GBB_MAJOR_VER;
+  gbb->minor_version = GBB_MINOR_VER;
+  gbb->flags = 0;
 
   Memset(&data_key, 0, sizeof(data_key));
 
@@ -91,7 +107,13 @@ int KeyBlockVerify(const VbKeyBlockHeader* block, uint64_t size,
                    const VbPublicKey *key, int hash_only) {
 
   TEST_EQ(hash_only, 0, "  Don't verify firmware with hash");
-  TEST_PTR_EQ(key, gbb_data + gbb->rootkey_offset, "  Verify with root key");
+
+  /*
+   * We cannot check the address of key, since it will be allocated. We
+   * check the contents instead.
+   */
+  TEST_STR_EQ((char *)GetPublicKeyDataC(key), TEST_KEY_DATA,
+              "  Verify with root key");
   TEST_NEQ(block==vblock || block==vblock+1, 0, "  Verify a valid key block");
 
   /* Mock uses header_version_major to hold return value */
diff --git a/tests/vboot_kernel_tests.c b/tests/vboot_kernel_tests.c
index 6992e94a..8dde9cb6 100644
--- a/tests/vboot_kernel_tests.c
+++ b/tests/vboot_kernel_tests.c
@@ -47,7 +47,8 @@ static int verify_data_fail;
 static RSAPublicKey *mock_data_key;
 static int mock_data_key_allocated;
 
-static GoogleBinaryBlockHeader gbb;
+static uint8_t gbb_data[sizeof(GoogleBinaryBlockHeader) + 2048];
+static GoogleBinaryBlockHeader *gbb = (GoogleBinaryBlockHeader*)gbb_data;
 static VbExDiskHandle_t handle;
 static VbNvContext vnc;
 static uint8_t shared_data[VB_SHARED_DATA_MIN_SIZE];
@@ -55,6 +56,7 @@ static VbSharedDataHeader *shared = (VbSharedDataHeader *)shared_data;
 static LoadKernelParams lkp;
 static VbKeyBlockHeader kbh;
 static VbKernelPreambleHeader kph;
+static VbCommonParams cparams;
 
 static void ResetCallLog(void)
 {
@@ -79,10 +81,15 @@ static void ResetMocks(void)
 	mock_data_key = (RSAPublicKey *)"TestDataKey";
 	mock_data_key_allocated = 0;
 
-	memset(&gbb, 0, sizeof(gbb));
-	gbb.major_version = GBB_MAJOR_VER;
-	gbb.minor_version = GBB_MINOR_VER;
-	gbb.flags = 0;
+	memset(gbb, 0, sizeof(gbb));
+	gbb->major_version = GBB_MAJOR_VER;
+	gbb->minor_version = GBB_MINOR_VER;
+	gbb->flags = 0;
+
+	memset(&cparams, '\0', sizeof(cparams));
+	cparams.gbb = gbb;
+	cparams.gbb_data = gbb;
+	cparams.gbb_size = sizeof(gbb_data);
 
 	memset(&vnc, 0, sizeof(vnc));
 	VbNvSetup(&vnc);
@@ -95,7 +102,8 @@ static void ResetMocks(void)
 	memset(&lkp, 0, sizeof(lkp));
 	lkp.nv_context = &vnc;
 	lkp.shared_data_blob = shared;
-	lkp.gbb_data = &gbb;
+	lkp.gbb_data = gbb;
+	lkp.gbb_size = sizeof(gbb_data);
 	lkp.bytes_per_lba = 512;
 	lkp.ending_lba = 1023;
 	lkp.kernel_buffer = kernel_buffer;
@@ -129,6 +137,8 @@ VbError_t VbExDiskRead(VbExDiskHandle_t handle, uint64_t lba_start,
 	if ((int)lba_start == disk_read_to_fail)
 		return VBERROR_SIMULATED;
 
+	/* Keep valgrind happy */
+	Memset(buffer, '\0', lba_count);
 	return VBERROR_SUCCESS;
 }
 
@@ -238,6 +248,11 @@ static void ReadWriteGptTest(void)
 		   "VbExDiskRead(h, 991, 32)\n"
 		   "VbExDiskRead(h, 1023, 1)\n");
 	ResetCallLog();
+	/*
+	 * Valgrind complains about access to uninitialized memory here, so
+	 * zero the primary header before each test.
+	 */
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree");
 	TEST_CALLS("");
 
@@ -246,6 +261,7 @@ static void ReadWriteGptTest(void)
 	AllocAndReadGptData(handle, &g);
 	g.modified |= GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1;
 	ResetCallLog();
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 1");
 	TEST_CALLS("VbExDiskWrite(h, 1, 1)\n"
 		   "VbExDiskWrite(h, 2, 32)\n");
@@ -255,6 +271,7 @@ static void ReadWriteGptTest(void)
 	AllocAndReadGptData(handle, &g);
 	g.modified = -1;
 	ResetCallLog();
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod all");
 	TEST_CALLS("VbExDiskWrite(h, 1, 1)\n"
 		   "VbExDiskWrite(h, 2, 32)\n"
@@ -276,21 +293,25 @@ static void ReadWriteGptTest(void)
 	ResetMocks();
 	disk_read_to_fail = 1;
 	TEST_NEQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail");
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	WriteAndFreeGptData(handle, &g);
 
 	ResetMocks();
 	disk_read_to_fail = 2;
 	TEST_NEQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail");
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	WriteAndFreeGptData(handle, &g);
 
 	ResetMocks();
 	disk_read_to_fail = 991;
 	TEST_NEQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail");
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	WriteAndFreeGptData(handle, &g);
 
 	ResetMocks();
 	disk_read_to_fail = 1023;
 	TEST_NEQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail");
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	WriteAndFreeGptData(handle, &g);
 
 	/* Error writing */
@@ -298,24 +319,28 @@ static void ReadWriteGptTest(void)
 	disk_write_to_fail = 1;
 	AllocAndReadGptData(handle, &g);
 	g.modified = -1;
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail");
 
 	ResetMocks();
 	disk_write_to_fail = 2;
 	AllocAndReadGptData(handle, &g);
 	g.modified = -1;
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail");
 
 	ResetMocks();
 	disk_write_to_fail = 991;
 	AllocAndReadGptData(handle, &g);
 	g.modified = -1;
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail");
 
 	ResetMocks();
 	disk_write_to_fail = 1023;
 	AllocAndReadGptData(handle, &g);
 	g.modified = -1;
+	Memset(g.primary_header, '\0', g.sector_bytes);
 	TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail");
 
 }
@@ -327,23 +352,28 @@ static void InvalidParamsTest(void)
 {
 	ResetMocks();
 	lkp.bytes_per_lba = 0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Bad lba size");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_PARAMETER,
+		"Bad lba size");
 
 	ResetMocks();
 	lkp.ending_lba = 0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Bad lba count");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_PARAMETER,
+		"Bad lba count");
 
 	ResetMocks();
 	lkp.bytes_per_lba = 128*1024;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Huge lba size");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_PARAMETER,
+		"Huge lba size");
 
 	ResetMocks();
 	disk_read_to_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_NO_KERNEL_FOUND, "Can't read disk");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_NO_KERNEL_FOUND,
+		"Can't read disk");
 
 	ResetMocks();
 	gpt_init_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_NO_KERNEL_FOUND, "Bad GPT");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_NO_KERNEL_FOUND,
+		"Bad GPT");
 }
 
 static void LoadKernelTest(void)
@@ -351,7 +381,7 @@ static void LoadKernelTest(void)
 	uint32_t u;
 
 	ResetMocks();
-	TEST_EQ(LoadKernel(&lkp), 0, "First kernel good");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "First kernel good");
 	TEST_EQ(lkp.partition_number, 1, "  part num");
 	TEST_EQ(lkp.bootloader_address, 0xbeadd008, "  bootloader addr");
 	TEST_EQ(lkp.bootloader_size, 0x1234, "  bootloader size");
@@ -362,46 +392,46 @@ static void LoadKernelTest(void)
 	ResetMocks();
 	mock_parts[1].start = 300;
 	mock_parts[1].size = 150;
-	TEST_EQ(LoadKernel(&lkp), 0, "Two good kernels");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Two good kernels");
 	TEST_EQ(lkp.partition_number, 1, "  part num");
 	TEST_EQ(mock_part_next, 1, "  didn't read second one");
 
 	/* Fail if no kernels found */
 	ResetMocks();
 	mock_parts[0].size = 0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_NO_KERNEL_FOUND, "No kernels");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_NO_KERNEL_FOUND, "No kernels");
 	VbNvGet(&vnc, VBNV_RECOVERY_REQUEST, &u);
 	TEST_EQ(u, VBNV_RECOVERY_RW_NO_OS, "  recovery request");
 
 	/* Skip kernels which are too small */
 	ResetMocks();
 	mock_parts[0].size = 10;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND, "Too small");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND, "Too small");
 	VbNvGet(&vnc, VBNV_RECOVERY_REQUEST, &u);
 	TEST_EQ(u, VBNV_RECOVERY_RW_INVALID_OS, "  recovery request");
 
 	ResetMocks();
 	disk_read_to_fail = 100;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Fail reading kernel start");
 
 	ResetMocks();
 	key_block_verify_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Fail key block sig");
 
 	/* In dev mode, fail if hash is bad too */
 	ResetMocks();
 	lkp.boot_flags |= BOOT_FLAG_DEVELOPER;
 	key_block_verify_fail = 2;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Fail key block dev hash");
 
 	/* But just bad sig is ok */
 	ResetMocks();
 	lkp.boot_flags |= BOOT_FLAG_DEVELOPER;
 	key_block_verify_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), 0, "Succeed key block dev sig");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Succeed key block dev sig");
 
 	/* In dev mode and requiring signed kernel, fail if sig is bad */
 	ResetMocks();
@@ -409,124 +439,126 @@ static void LoadKernelTest(void)
 	VbNvSet(&vnc, VBNV_DEV_BOOT_SIGNED_ONLY, 1);
 	VbNvTeardown(&vnc);
 	key_block_verify_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Fail key block dev sig");
 
 	/* Check key block flag mismatches */
 	ResetMocks();
 	kbh.key_block_flags =
 		KEY_BLOCK_FLAG_RECOVERY_0 | KEY_BLOCK_FLAG_DEVELOPER_1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block dev flag mismatch");
 
 	ResetMocks();
 	kbh.key_block_flags =
 		KEY_BLOCK_FLAG_RECOVERY_1 | KEY_BLOCK_FLAG_DEVELOPER_0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block rec flag mismatch");
 
 	ResetMocks();
 	lkp.boot_flags |= BOOT_FLAG_RECOVERY;
 	kbh.key_block_flags =
 		KEY_BLOCK_FLAG_RECOVERY_1 | KEY_BLOCK_FLAG_DEVELOPER_1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block recdev flag mismatch");
 
 	ResetMocks();
 	lkp.boot_flags |= BOOT_FLAG_RECOVERY | BOOT_FLAG_DEVELOPER;
 	kbh.key_block_flags =
 		KEY_BLOCK_FLAG_RECOVERY_1 | KEY_BLOCK_FLAG_DEVELOPER_0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block rec!dev flag mismatch");
 
 	ResetMocks();
 	kbh.data_key.key_version = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block kernel key rollback");
 
 	ResetMocks();
 	kbh.data_key.key_version = 0x10000;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Key block kernel key version too big");
 
 	ResetMocks();
 	kbh.data_key.key_version = 3;
-	TEST_EQ(LoadKernel(&lkp), 0, "Key block version roll forward");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Key block version roll forward");
 	TEST_EQ(shared->kernel_version_tpm, 0x30001, "  shared version");
 
 	ResetMocks();
 	kbh.data_key.key_version = 3;
 	mock_parts[1].start = 300;
 	mock_parts[1].size = 150;
-	TEST_EQ(LoadKernel(&lkp), 0, "Two kernels roll forward");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Two kernels roll forward");
 	TEST_EQ(mock_part_next, 2, "  read both");
 	TEST_EQ(shared->kernel_version_tpm, 0x30001, "  shared version");
 
 	ResetMocks();
 	kbh.data_key.key_version = 1;
 	lkp.boot_flags |= BOOT_FLAG_DEVELOPER;
-	TEST_EQ(LoadKernel(&lkp), 0, "Key version ignored in dev mode");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Key version ignored in dev mode");
 
 	ResetMocks();
 	kbh.data_key.key_version = 1;
 	lkp.boot_flags |= BOOT_FLAG_RECOVERY;
-	TEST_EQ(LoadKernel(&lkp), 0, "Key version ignored in rec mode");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Key version ignored in rec mode");
 
 	ResetMocks();
 	mock_data_key = NULL;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND, "Bad data key");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
+		"Bad data key");
 
 	ResetMocks();
 	preamble_verify_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,	"Bad preamble");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
+		"Bad preamble");
 
 	ResetMocks();
 	kph.kernel_version = 0;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Kernel version rollback");
 
 	ResetMocks();
 	kph.kernel_version = 0;
 	lkp.boot_flags |= BOOT_FLAG_DEVELOPER;
-	TEST_EQ(LoadKernel(&lkp), 0, "Kernel version ignored in dev mode");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Kernel version ignored in dev mode");
 
 	ResetMocks();
 	kph.kernel_version = 0;
 	lkp.boot_flags |= BOOT_FLAG_RECOVERY;
-	TEST_EQ(LoadKernel(&lkp), 0, "Kernel version ignored in rec mode");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Kernel version ignored in rec mode");
 
 	ResetMocks();
 	kph.preamble_size |= 0x07;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Kernel body offset");
 
 	/* Check getting kernel load address from header */
 	ResetMocks();
 	kph.body_load_address = (size_t)kernel_buffer;
 	lkp.kernel_buffer = NULL;
-	TEST_EQ(LoadKernel(&lkp), 0, "Get load address from preamble");
+	TEST_EQ(LoadKernel(&lkp, &cparams), 0, "Get load address from preamble");
 	TEST_PTR_EQ(lkp.kernel_buffer, kernel_buffer, "  address");
 	/* Size is rounded up to nearest sector */
 	TEST_EQ(lkp.kernel_buffer_size, 70144, "  size");
 
 	ResetMocks();
 	lkp.kernel_buffer_size = 8192;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Kernel too big for buffer");
 
 	ResetMocks();
 	mock_parts[0].size = 130;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Kernel too big for partition");
 
 	ResetMocks();
 	disk_read_to_fail = 108;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,
 		"Fail reading kernel data");
 
 	ResetMocks();
 	verify_data_fail = 1;
-	TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_KERNEL_FOUND,	"Bad data");
+	TEST_EQ(LoadKernel(&lkp, &cparams), VBERROR_INVALID_KERNEL_FOUND,	"Bad data");
 }
 
 int main(void)
diff --git a/tests/vboot_region_tests.c b/tests/vboot_region_tests.c
new file mode 100644
index 00000000..1293136e
--- /dev/null
+++ b/tests/vboot_region_tests.c
@@ -0,0 +1,213 @@
+/* Copyright (c) 2011 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.
+ *
+ * Tests for vboot region API
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "bmpblk_font.h"
+#include "gbb_header.h"
+#include "host_common.h"
+#include "rollback_index.h"
+#include "test_common.h"
+#include "vboot_common.h"
+#include "vboot_nvstorage.h"
+#include "vboot_struct.h"
+
+/* Mock data */
+static VbCommonParams cparams;
+static VbNvContext vnc;
+static VbSelectFirmwareParams fparams;
+VbSelectAndLoadKernelParams kparams;
+static char gbb_data[4096 + sizeof(GoogleBinaryBlockHeader)];
+static uint8_t shared_data[VB_SHARED_DATA_MIN_SIZE];
+static VbSharedDataHeader* shared = (VbSharedDataHeader*)shared_data;
+/* Mock TPM versions */
+static uint32_t mock_tpm_version;
+static uint32_t mock_lf_tpm_version;  /* TPM version set by LoadFirmware() */
+static uint32_t mock_seen_region;
+/* Mock return values, so we can simulate errors */
+static VbError_t mock_lf_retval;
+
+#define COMPRESSED_SIZE		200
+#define ORIGINAL_SIZE		400
+
+/* Reset mock data (for use before each test) */
+static void ResetMocks(void) {
+	GoogleBinaryBlockHeader *gbb;
+	BmpBlockHeader *bhdr;
+	ImageInfo *image_info;
+	ScreenLayout *layout;
+	int gbb_used;
+
+	Memset(&vnc, 0, sizeof(vnc));
+	VbNvSetup(&vnc);
+	VbNvTeardown(&vnc);                   /* So CRC gets generated */
+
+	Memset(&cparams, 0, sizeof(cparams));
+	cparams.shared_data_size = sizeof(shared_data);
+	cparams.shared_data_blob = shared_data;
+
+	Memset(&fparams, 0, sizeof(fparams));
+
+	Memset(gbb_data, 0, sizeof(gbb_data));
+	gbb = (GoogleBinaryBlockHeader *)gbb_data;
+	gbb->major_version = GBB_MAJOR_VER;
+	gbb->minor_version = GBB_MINOR_VER;
+	gbb->flags = 0;
+	gbb_used = sizeof(GoogleBinaryBlockHeader);
+
+	gbb->hwid_offset = gbb_used;
+	strcpy(gbb_data + gbb->hwid_offset, "Test HWID");
+	gbb->hwid_size = strlen(gbb_data + gbb->hwid_offset) + 1;
+	gbb_used = (gbb_used + gbb->hwid_size + 7) & ~7;
+
+	gbb->bmpfv_offset = gbb_used;
+	bhdr = (BmpBlockHeader *)(gbb_data + gbb->bmpfv_offset);
+	gbb->bmpfv_size = sizeof(BmpBlockHeader);
+	gbb_used = (gbb_used + gbb->bmpfv_size + 7) & ~7;
+	memcpy(bhdr->signature, BMPBLOCK_SIGNATURE, BMPBLOCK_SIGNATURE_SIZE);
+	bhdr->major_version = BMPBLOCK_MAJOR_VERSION;
+	bhdr->minor_version = BMPBLOCK_MINOR_VERSION;
+	bhdr->number_of_localizations = 3;
+	bhdr->number_of_screenlayouts = 1;
+
+	layout = (ScreenLayout *)(gbb_data + gbb_used);
+	gbb_used += sizeof(*layout);
+	layout->images[0].x = 1;
+	layout->images[0].image_info_offset = gbb_used - gbb->bmpfv_offset;
+
+	/* First image is uncompressed */
+	image_info = (ImageInfo *)(gbb_data + gbb_used);
+	image_info->format = FORMAT_BMP;
+	image_info->compressed_size = ORIGINAL_SIZE;
+	image_info->original_size = ORIGINAL_SIZE;
+	image_info->compression = COMPRESS_NONE;
+	gbb_used += sizeof(*image_info);
+	strcpy(gbb_data + gbb_used, "original");
+	gbb_used += ORIGINAL_SIZE;
+
+	/* Second image is compressed */
+	layout->images[1].image_info_offset = gbb_used - gbb->bmpfv_offset;
+	layout->images[1].x = 2;
+	image_info = (ImageInfo *)(gbb_data + gbb_used);
+	image_info->format = FORMAT_BMP;
+	image_info->compressed_size = COMPRESSED_SIZE;
+	image_info->original_size = ORIGINAL_SIZE;
+	image_info->compression = COMPRESS_LZMA1;
+	gbb_used += sizeof(*image_info) + COMPRESSED_SIZE;
+
+	Memset(&shared_data, 0, sizeof(shared_data));
+	VbSharedDataInit(shared, sizeof(shared_data));
+	shared->fw_keyblock_flags = 0xABCDE0;
+
+	mock_tpm_version = mock_lf_tpm_version = 0x20004;
+	shared->fw_version_tpm_start = mock_tpm_version;
+	mock_lf_retval = 0;
+	mock_seen_region = 0;
+}
+
+/****************************************************************************/
+/* Mocked verification functions */
+
+uint32_t SetTPMBootModeState(int developer_mode, int recovery_mode,
+                             uint64_t fw_keyblock_flags) {
+  return VBERROR_SUCCESS;
+}
+
+VbError_t VbExNvStorageRead(uint8_t* buf) {
+  Memcpy(buf, vnc.raw, sizeof(vnc.raw));
+  return VBERROR_SUCCESS;
+}
+
+VbError_t VbExNvStorageWrite(const uint8_t* buf) {
+  Memcpy(vnc.raw, buf, sizeof(vnc.raw));
+  return VBERROR_SUCCESS;
+}
+
+VbError_t VbExRegionRead(VbCommonParams *cparams,
+			 enum vb_firmware_region region, uint32_t offset,
+			 uint32_t size, void *buf)
+{
+	if (region != VB_REGION_GBB)
+		return VBERROR_UNSUPPORTED_REGION;
+	mock_seen_region |= 1 << region;
+	if (offset + size > sizeof(gbb_data))
+		return VBERROR_REGION_READ_INVALID;
+	memcpy(buf, gbb_data + offset, size);
+	return VBERROR_SUCCESS;
+}
+
+VbError_t VbExDisplayImage(uint32_t x, uint32_t y,
+                           void *buffer, uint32_t buffersize)
+{
+	switch (x) {
+	case 1:
+		TEST_STR_EQ(buffer, "original", "  uncompressed image");
+		break;
+	case 2:
+		TEST_STR_EQ(buffer, "decompressed", "  compressed image");
+		break;
+	default:
+		TEST_STR_EQ(buffer, "invalid", "  correct image");
+		break;
+	}
+	return VBERROR_SUCCESS;
+}
+
+VbError_t VbExDecompress(void *inbuf, uint32_t in_size,
+                         uint32_t compression_type,
+                         void *outbuf, uint32_t *out_size)
+{
+	*out_size = ORIGINAL_SIZE;
+	strcpy(outbuf, "decompressed");
+	return VBERROR_SUCCESS;
+}
+
+int LoadFirmware(VbCommonParams *cparams, VbSelectFirmwareParams *fparams,
+                 VbNvContext *vnc) {
+	shared->fw_version_tpm = mock_lf_tpm_version;
+	TEST_PTR_NEQ(cparams->gbb, NULL, "  GBB allocated");
+	return mock_lf_retval;
+}
+
+/****************************************************************************/
+
+static void VbRegionReadTest(void) {
+	/* Should read GBB */
+	ResetMocks();
+	TEST_TRUE(1, "Normal call");
+	TEST_EQ(VbSelectFirmware(&cparams, &fparams), VBERROR_SUCCESS,
+		"  Success");
+	TEST_EQ(mock_seen_region, 1 << VB_REGION_GBB, "  GBB region");
+	TEST_PTR_EQ(cparams.gbb, NULL, "  GBB free");
+
+	ResetMocks();
+	TEST_EQ(VbSelectAndLoadKernel(&cparams, &kparams),
+		VBERROR_NO_DISK_FOUND, "Kernel");
+	TEST_PTR_EQ(cparams.gbb, NULL, "  GBB free");
+	TEST_PTR_EQ(cparams.bmp, NULL, "  BMP free");
+
+	ResetMocks();
+	shared->flags |= VBSD_BOOT_DEV_SWITCH_ON;
+	TEST_EQ(VbSelectAndLoadKernel(&cparams, &kparams),
+		VBERROR_NO_DISK_FOUND, "Kernel");
+}
+
+int main(int argc, char* argv[]) {
+  int error_code = 0;
+
+  VbRegionReadTest();
+
+  if (vboot_api_stub_check_memory())
+    error_code = 255;
+  if (!gTestSuccess)
+    error_code = 255;
+
+  return error_code;
+}
diff --git a/utility/load_kernel_test.c b/utility/load_kernel_test.c
index 307b8ee2..8e6c5191 100644
--- a/utility/load_kernel_test.c
+++ b/utility/load_kernel_test.c
@@ -27,6 +27,7 @@
 
 /* Global variables for stub functions */
 static LoadKernelParams lkp;
+static VbCommonParams cparams;
 static VbNvContext vnc;
 static FILE *image_file = NULL;
 
@@ -94,6 +95,7 @@ int main(int argc, char* argv[]) {
   Memset(&vnc, 0, sizeof(VbNvContext));
   VbNvSetup(&vnc);
   lkp.nv_context = &vnc;
+  Memset(&cparams, 0, sizeof(VbCommonParams));
 
   /* Parse options */
   opterr = 0;
@@ -157,6 +159,7 @@ int main(int argc, char* argv[]) {
   lkp.gbb_size = sizeof(GoogleBinaryBlockHeader) + key_size;
   lkp.gbb_data = (void*)malloc(lkp.gbb_size);
   gbb = (GoogleBinaryBlockHeader*)lkp.gbb_data;
+  cparams.gbb = gbb;
   Memset(gbb, 0, lkp.gbb_size);
   Memcpy(gbb->signature, GBB_SIGNATURE, GBB_SIGNATURE_SIZE);
   gbb->major_version = GBB_MAJOR_VER;
@@ -214,7 +217,7 @@ int main(int argc, char* argv[]) {
   lkp.kernel_buffer_size = KERNEL_BUFFER_SIZE;
 
   /* Call LoadKernel() */
-  rv = LoadKernel(&lkp);
+  rv = LoadKernel(&lkp, &cparams);
   printf("LoadKernel() returned %d\n", rv);
 
   if (VBERROR_SUCCESS == rv) {