vboot2: load keyblock and preamble from new-style structs

And associated unit tests.

BUG=chromium:423882
BRANCH=none
TEST=VBOOT2=1 make runtests

Change-Id: I6565d8f5da947b4874a656a61051df1a4ce415c7
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/229163
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>

Makefile

@@ -286,6 +286,7 @@ FWLIB2_SRCS = \
 	firmware/2lib/2common2.c \
 	firmware/2lib/2crc8.c \
 	firmware/2lib/2misc.c \
+	firmware/2lib/2misc2.c \
 	firmware/2lib/2nvstorage.c \
 	firmware/2lib/2packed_key.c \
 	firmware/2lib/2packed_key2.c \
@@ -641,6 +642,7 @@ TEST_NAMES += \
 	tests/vb2_common3_tests \
 	tests/vb2_misc_tests \
 	tests/vb2_misc2_tests \
+	tests/vb2_misc3_tests \
 	tests/vb2_nvstorage_tests \
 	tests/vb2_rsa_padding_tests \
 	tests/vb2_rsa_utility_tests \
@@ -1177,6 +1179,7 @@ run2tests: test_setup
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_common3_tests ${TEST_KEYS}
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_misc_tests
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_misc2_tests
+	${RUNTEST} ${BUILD_RUN}/tests/vb2_misc3_tests
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_nvstorage_tests
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_rsa_utility_tests
 	${RUNTEST} ${BUILD_RUN}/tests/vb2_secdata_tests

firmware/2lib/2misc2.c

@@ -0,0 +1,238 @@
+/* Copyright (c) 2014 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.
+ *
+ * Misc functions which need access to vb2_context but are not public APIs
+ */
+
+#include "2sysincludes.h"
+#include "2api.h"
+#include "2common.h"
+#include "2misc.h"
+#include "2nvstorage.h"
+#include "2secdata.h"
+#include "2sha.h"
+#include "2rsa.h"
+
+/**
+ * Read an object with a common struct header from a verified boot resource.
+ *
+ * On success, an object buffer will be allocated in the work buffer, the
+ * object will be stored into the buffer, and *buf_ptr will point to the
+ * object.
+ *
+ * @param ctx		Vboot context
+ * @param index		Resource index to read
+ * @param offset	Byte offset within resource to start at
+ * @param buf_ptr	Destination for object pointer
+ * @return VB2_SUCCESS, or error code on error.
+ */
+int vb2_read_resource_object(struct vb2_context *ctx,
+			     enum vb2_resource_index index,
+			     uint32_t offset,
+			     struct vb2_workbuf *wb,
+			     void **buf_ptr)
+{
+	struct vb2_struct_common c;
+	void *buf;
+	int rv;
+
+	*buf_ptr = NULL;
+
+	/* Read the common header */
+	rv = vb2ex_read_resource(ctx, index, offset, &c, sizeof(c));
+	if (rv)
+		return rv;
+
+	/* Allocate a buffer for the object, now that we know how big it is */
+	buf = vb2_workbuf_alloc(wb, c.total_size);
+	if (!buf)
+		return VB2_ERROR_READ_RESOURCE_OBJECT_BUF;
+
+	/* Read the object */
+	rv = vb2ex_read_resource(ctx, index, offset, buf, c.total_size);
+	if (rv) {
+		vb2_workbuf_free(wb, c.total_size);
+		return rv;
+	}
+
+	/* Save the pointer */
+	*buf_ptr = buf;
+	return VB2_SUCCESS;
+}
+
+int vb2_load_fw_keyblock2(struct vb2_context *ctx)
+{
+	struct vb2_shared_data *sd = vb2_get_sd(ctx);
+	struct vb2_workbuf wb;
+
+	uint8_t *key_data;
+	uint32_t key_size;
+	struct vb2_packed_key2 *packed_key;
+	struct vb2_public_key root_key;
+	struct vb2_keyblock2 *kb;
+
+	uint32_t sec_version;
+	int rv;
+
+	vb2_workbuf_from_ctx(ctx, &wb);
+
+	/* Read the root key */
+	key_size = sd->gbb_rootkey_size;
+	key_data = vb2_workbuf_alloc(&wb, key_size);
+	if (!key_data)
+		return VB2_ERROR_FW_KEYBLOCK_WORKBUF_ROOT_KEY;
+
+	rv = vb2ex_read_resource(ctx, VB2_RES_GBB, sd->gbb_rootkey_offset,
+				 key_data, key_size);
+	if (rv)
+		return rv;
+
+	/* Unpack the root key */
+	rv = vb2_unpack_key2(&root_key, key_data, key_size);
+	if (rv)
+		return rv;
+
+	/*
+	 * Load the firmware keyblock common header into the work buffer after
+	 * the root key.
+	 */
+	rv = vb2_read_resource_object(ctx, VB2_RES_FW_VBLOCK, 0, &wb,
+				      (void **)&kb);
+	if (rv)
+		return rv;
+
+	/* Verify the keyblock */
+	rv = vb2_verify_keyblock2(kb, kb->c.total_size, &root_key, &wb);
+	if (rv)
+		return rv;
+
+	/* Preamble follows the keyblock in the vblock */
+	sd->vblock_preamble_offset = kb->c.total_size;
+
+	/* Read the secure key version */
+	rv = vb2_secdata_get(ctx, VB2_SECDATA_VERSIONS, &sec_version);
+	if (rv)
+		return rv;
+
+	packed_key = (struct vb2_packed_key2 *)((uint8_t *)kb + kb->key_offset);
+
+	/* Key version is the upper 16 bits of the composite firmware version */
+	if (packed_key->key_version > 0xffff)
+		return VB2_ERROR_FW_KEYBLOCK_VERSION_RANGE;
+	if (packed_key->key_version < (sec_version >> 16))
+		return VB2_ERROR_FW_KEYBLOCK_VERSION_ROLLBACK;
+
+	sd->fw_version = packed_key->key_version << 16;
+
+	/*
+	 * Save the data key in the work buffer.  This overwrites the root key
+	 * we read above.  That's ok, because now that we have the data key we
+	 * no longer need the root key.
+	 *
+	 * Use memmove() instead of memcpy().  In theory, the destination will
+	 * never overlap with the source because the root key is likely to be
+	 * at least as large as the data key, but there's no harm here in being
+	 * paranoid.
+	 */
+	memmove(key_data, packed_key, packed_key->c.total_size);
+	packed_key = (struct vb2_packed_key2 *)key_data;
+
+	/* Save the packed key offset and size */
+	sd->workbuf_data_key_offset = vb2_offset_of(ctx->workbuf, key_data);
+	sd->workbuf_data_key_size = packed_key->c.total_size;
+
+	/* Data key will persist in the workbuf after we return */
+	ctx->workbuf_used = sd->workbuf_data_key_offset +
+		sd->workbuf_data_key_size;
+
+	return VB2_SUCCESS;
+}
+
+int vb2_load_fw_preamble2(struct vb2_context *ctx)
+{
+	struct vb2_shared_data *sd = vb2_get_sd(ctx);
+	struct vb2_workbuf wb;
+
+	uint8_t *key_data = ctx->workbuf + sd->workbuf_data_key_offset;
+	uint32_t key_size = sd->workbuf_data_key_size;
+	struct vb2_public_key data_key;
+
+	/* Preamble goes in the next unused chunk of work buffer */
+	struct vb2_fw_preamble2 *pre;
+
+	uint32_t sec_version;
+	int rv;
+
+	vb2_workbuf_from_ctx(ctx, &wb);
+
+	/* Unpack the firmware data key */
+	if (!sd->workbuf_data_key_size)
+		return VB2_ERROR_FW_PREAMBLE2_DATA_KEY;
+
+	rv = vb2_unpack_key2(&data_key, key_data, key_size);
+	if (rv)
+		return rv;
+
+	/* Load the firmware preamble */
+	rv = vb2_read_resource_object(ctx, VB2_RES_FW_VBLOCK,
+				      sd->vblock_preamble_offset, &wb,
+				      (void **)&pre);
+	if (rv)
+		return rv;
+
+	/* Work buffer now contains the data subkey data and the preamble */
+
+	/* Verify the preamble */
+	rv = vb2_verify_fw_preamble2(pre, pre->c.total_size, &data_key, &wb);
+	if (rv)
+		return rv;
+
+	/* Move the preamble down now that the data key is no longer used */
+	memmove(key_data, pre, pre->c.total_size);
+	pre = (struct vb2_fw_preamble2 *)key_data;
+
+	/* Data key is now gone */
+	sd->workbuf_data_key_offset = sd->workbuf_data_key_size = 0;
+
+	/* Read the secure key version */
+	rv = vb2_secdata_get(ctx, VB2_SECDATA_VERSIONS, &sec_version);
+	if (rv)
+		return rv;
+
+	/*
+	 * Firmware version is the lower 16 bits of the composite firmware
+	 * version.
+	 */
+	if (pre->firmware_version > 0xffff)
+		return VB2_ERROR_FW_PREAMBLE2_VERSION_RANGE;
+
+	/* Combine with the key version from vb2_load_fw_keyblock() */
+	sd->fw_version |= pre->firmware_version;
+	if (sd->fw_version < sec_version)
+		return VB2_ERROR_FW_PREAMBLE2_VERSION_ROLLBACK;
+
+	/*
+	 * If this is a newer version than in secure storage, and we
+	 * successfully booted the same slot last boot, roll forward the
+	 * version in secure storage.
+	 */
+	if (sd->fw_version > sec_version &&
+	    sd->last_fw_slot == sd->fw_slot &&
+	    sd->last_fw_result == VB2_FW_RESULT_SUCCESS) {
+
+		rv = vb2_secdata_set(ctx, VB2_SECDATA_VERSIONS, sd->fw_version);
+		if (rv)
+			return rv;
+	}
+
+	/* Keep track of where we put the preamble */
+	sd->workbuf_preamble_offset = vb2_offset_of(ctx->workbuf, pre);
+	sd->workbuf_preamble_size = pre->c.total_size;
+
+	/* Preamble will persist in work buffer after we return */
+	ctx->workbuf_used = sd->workbuf_preamble_offset +
+		sd->workbuf_preamble_size;
+
+	return VB2_SUCCESS;
+}

firmware/2lib/include/2misc.h

@@ -130,6 +130,11 @@ int vb2_select_fw_slot(struct vb2_context *ctx);
  */
 int vb2_load_fw_keyblock(struct vb2_context *ctx);
 
+/**
+ * (same, for new-style structs)
+ */
+int vb2_load_fw_keyblock2(struct vb2_context *ctx);
+
 /**
  * Verify the firmware preamble using the data subkey from the keyblock.
  *
@@ -140,4 +145,9 @@ int vb2_load_fw_keyblock(struct vb2_context *ctx);
  */
 int vb2_load_fw_preamble(struct vb2_context *ctx);
 
+/**
+ * (same, for new-style structs)
+ */
+int vb2_load_fw_preamble2(struct vb2_context *ctx);
+
 #endif  /* VBOOT_REFERENCE_VBOOT_2MISC_H_ */

firmware/2lib/include/2return_codes.h

@@ -364,6 +364,9 @@ enum vb2_return_code {
 	/* Firmware version rollback in vb2_load_fw_preamble() */
 	VB2_ERROR_FW_PREAMBLE2_VERSION_ROLLBACK,
 
+	/* Not enough space in work buffer for resource object */
+	VB2_ERROR_READ_RESOURCE_OBJECT_BUF,
+
         /**********************************************************************
 	 * API-level errors
 	 */

tests/vb2_misc3_tests.c

@@ -0,0 +1,384 @@
+/* Copyright (c) 2014 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 misc library, new-style structs
+ */
+
+#include <stdio.h>
+
+#include "2sysincludes.h"
+#include "2api.h"
+#include "2common.h"
+#include "2misc.h"
+#include "2nvstorage.h"
+#include "2secdata.h"
+
+#include "test_common.h"
+
+/* Common context for tests */
+static uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE]
+	__attribute__ ((aligned (16)));
+static struct vb2_context ctx;
+static struct vb2_shared_data *sd;
+
+/* Mocked function data */
+
+static struct {
+	struct vb2_gbb_header h;
+	struct vb2_packed_key2 rootkey;
+	char rootkey_data[32];
+} mock_gbb;
+
+static struct {
+	/* Keyblock */
+	struct {
+		struct vb2_keyblock2 kb;
+		struct vb2_packed_key2 data_key;
+		char data_key_data[16];
+		uint8_t kbdata[128];
+	} k;
+	/* Preamble follows keyblock */
+	struct {
+		struct vb2_fw_preamble2 pre;
+		uint8_t predata[128];
+	} p;
+} mock_vblock;
+
+static int mock_read_res_fail_on_call;
+static int mock_unpack_key_retval;
+static int mock_verify_keyblock_retval;
+static int mock_verify_preamble_retval;
+
+/* Type of test to reset for */
+enum reset_type {
+	FOR_KEYBLOCK,
+	FOR_PREAMBLE
+};
+
+static void reset_common_data(enum reset_type t)
+{
+	struct vb2_keyblock2 *kb = &mock_vblock.k.kb;
+	struct vb2_packed_key2 *dk = &mock_vblock.k.data_key;
+	struct vb2_fw_preamble2 *pre = &mock_vblock.p.pre;
+
+	memset(workbuf, 0xaa, sizeof(workbuf));
+
+	memset(&ctx, 0, sizeof(ctx));
+	ctx.workbuf = workbuf;
+	ctx.workbuf_size = sizeof(workbuf);
+
+	vb2_init_context(&ctx);
+	sd = vb2_get_sd(&ctx);
+
+	vb2_nv_init(&ctx);
+
+	vb2_secdata_create(&ctx);
+	vb2_secdata_init(&ctx);
+
+	mock_read_res_fail_on_call = 0;
+	mock_unpack_key_retval = VB2_SUCCESS;
+	mock_verify_keyblock_retval = VB2_SUCCESS;
+	mock_verify_preamble_retval = VB2_SUCCESS;
+
+	/* Set up mock data for verifying keyblock */
+	vb2_secdata_set(&ctx, VB2_SECDATA_VERSIONS, 0x20002);
+
+	sd->gbb_rootkey_offset = vb2_offset_of(&mock_gbb, &mock_gbb.rootkey);
+	sd->gbb_rootkey_size = sizeof(mock_gbb.rootkey_data);
+	sd->last_fw_result = VB2_FW_RESULT_SUCCESS;
+
+	mock_gbb.rootkey.sig_alg = VB2_SIG_RSA8192;
+	mock_gbb.rootkey.key_offset =
+		vb2_offset_of(&mock_gbb.rootkey,
+			      &mock_gbb.rootkey_data);
+	mock_gbb.rootkey.key_size = sizeof(mock_gbb.rootkey_data);
+
+	kb->c.total_size = sizeof(mock_vblock.k);
+	kb->key_offset = vb2_offset_of(&mock_vblock.k.kb,
+				       &mock_vblock.k.data_key);
+
+	dk->c.fixed_size = sizeof(mock_vblock.k.data_key);
+	dk->sig_alg = VB2_SIG_RSA4096;
+	dk->key_version = 2;
+	dk->key_offset = dk->c.fixed_size;
+	dk->key_size = sizeof(mock_vblock.k.data_key_data);
+	dk->c.total_size = dk->key_offset + dk->key_size;
+	strcpy(mock_vblock.k.data_key_data, "data key data!!");
+
+	pre->c.total_size = sizeof(mock_vblock.p);
+	pre->firmware_version = 2;
+
+	/* If verifying preamble, verify keyblock first to set up data key */
+	if (t == FOR_PREAMBLE)
+		vb2_load_fw_keyblock2(&ctx);
+};
+
+/* Mocked functions */
+
+int vb2ex_read_resource(struct vb2_context *ctx,
+			enum vb2_resource_index index,
+			uint32_t offset,
+			void *buf,
+			uint32_t size)
+{
+	uint8_t *rptr;
+	uint32_t rsize;
+
+	if (--mock_read_res_fail_on_call == 0)
+		return VB2_ERROR_EX_READ_RESOURCE_INDEX;
+
+	switch(index) {
+	case VB2_RES_GBB:
+		rptr = (uint8_t *)&mock_gbb;
+		rsize = sizeof(mock_gbb);
+		break;
+	case VB2_RES_FW_VBLOCK:
+		rptr = (uint8_t *)&mock_vblock;
+		rsize = sizeof(mock_vblock);
+		break;
+	default:
+		return VB2_ERROR_EX_READ_RESOURCE_INDEX;
+	}
+
+	if (offset > rsize || offset + size > rsize)
+		return VB2_ERROR_EX_READ_RESOURCE_SIZE;
+
+	memcpy(buf, rptr + offset, size);
+	return VB2_SUCCESS;
+}
+
+int vb2_unpack_key2(struct vb2_public_key *key,
+		    const uint8_t *buf,
+		    uint32_t size)
+{
+	return mock_unpack_key_retval;
+}
+
+int vb2_verify_keyblock2(struct vb2_keyblock2 *block,
+			 uint32_t size,
+			 const struct vb2_public_key *key,
+			 const struct vb2_workbuf *wb)
+{
+	return mock_verify_keyblock_retval;
+}
+
+int vb2_verify_fw_preamble2(struct vb2_fw_preamble2 *preamble,
+			    uint32_t size,
+			    const struct vb2_public_key *key,
+			    const struct vb2_workbuf *wb)
+{
+	return mock_verify_preamble_retval;
+}
+
+/* Tests */
+
+static void load_keyblock_tests(void)
+{
+	struct vb2_keyblock2 *kb = &mock_vblock.k.kb;
+	struct vb2_packed_key2 *dk = &mock_vblock.k.data_key;
+	struct vb2_packed_key2 *k;
+	int wb_used_before;
+
+	/* Test successful call */
+	reset_common_data(FOR_KEYBLOCK);
+	wb_used_before = ctx.workbuf_used;
+	TEST_SUCC(vb2_load_fw_keyblock2(&ctx), "keyblock verify");
+	TEST_EQ(sd->fw_version, 0x20000, "keyblock version");
+	TEST_EQ(sd->vblock_preamble_offset, sizeof(mock_vblock.k),
+		"preamble offset");
+	TEST_EQ(sd->workbuf_data_key_offset,
+		(wb_used_before + (VB2_WORKBUF_ALIGN - 1)) &
+		~(VB2_WORKBUF_ALIGN - 1),
+		"keyblock data key offset");
+	TEST_EQ(ctx.workbuf_used,
+		sd->workbuf_data_key_offset + sd->workbuf_data_key_size,
+		"workbuf used");
+
+	/* Make sure data key was properly saved */
+	k = (struct vb2_packed_key2 *)(ctx.workbuf +
+				       sd->workbuf_data_key_offset);
+	TEST_EQ(k->sig_alg, VB2_SIG_RSA4096, "data key algorithm");
+	TEST_EQ(k->key_version, 2, "data key version");
+	TEST_EQ(k->key_size, sizeof(mock_vblock.k.data_key_data),
+		"data key size");
+	TEST_EQ(memcmp(ctx.workbuf + sd->workbuf_data_key_offset +
+		       k->key_offset, mock_vblock.k.data_key_data,
+		       sizeof(mock_vblock.k.data_key_data)),
+		0, "data key data");
+	TEST_EQ(ctx.workbuf_used,
+		sd->workbuf_data_key_offset + sd->workbuf_data_key_size,
+		"workbuf used after");
+
+	/* Test failures */
+	reset_common_data(FOR_KEYBLOCK);
+	ctx.workbuf_used = ctx.workbuf_size - sd->gbb_rootkey_size + 8;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_FW_KEYBLOCK_WORKBUF_ROOT_KEY,
+		"keyblock not enough workbuf for root key");
+
+	reset_common_data(FOR_KEYBLOCK);
+	sd->gbb_rootkey_size = sizeof(mock_gbb);
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_EX_READ_RESOURCE_SIZE,
+		"keyblock read root key");
+
+	reset_common_data(FOR_KEYBLOCK);
+	mock_unpack_key_retval = VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM,
+		"keyblock unpack root key");
+
+	reset_common_data(FOR_KEYBLOCK);
+	ctx.workbuf_used = ctx.workbuf_size - sd->gbb_rootkey_size - 8;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_READ_RESOURCE_OBJECT_BUF,
+		"keyblock not enough workbuf for header");
+
+	reset_common_data(FOR_KEYBLOCK);
+	mock_read_res_fail_on_call = 2;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_EX_READ_RESOURCE_INDEX,
+		"keyblock read keyblock header");
+
+	reset_common_data(FOR_KEYBLOCK);
+	ctx.workbuf_used = ctx.workbuf_size - sd->gbb_rootkey_size
+		- sizeof(struct vb2_keyblock);
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_READ_RESOURCE_OBJECT_BUF,
+		"keyblock not enough workbuf for entire keyblock");
+
+	reset_common_data(FOR_KEYBLOCK);
+	kb->c.total_size = sizeof(mock_vblock) + 1;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_EX_READ_RESOURCE_SIZE,
+		"keyblock read keyblock");
+
+	reset_common_data(FOR_KEYBLOCK);
+	mock_verify_keyblock_retval = VB2_ERROR_KEYBLOCK_MAGIC;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_KEYBLOCK_MAGIC,
+		"keyblock verify keyblock");
+
+	reset_common_data(FOR_KEYBLOCK);
+	dk->key_version = 0x10000;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_FW_KEYBLOCK_VERSION_RANGE,
+		"keyblock version range");
+
+	reset_common_data(FOR_KEYBLOCK);
+	dk->key_version = 1;
+	TEST_EQ(vb2_load_fw_keyblock2(&ctx),
+		VB2_ERROR_FW_KEYBLOCK_VERSION_ROLLBACK,
+		"keyblock rollback");
+}
+
+static void load_preamble_tests(void)
+{
+	struct vb2_fw_preamble2 *pre = &mock_vblock.p.pre;
+	int data_key_offset_before;
+	uint32_t v;
+
+	/* Test successful call */
+	reset_common_data(FOR_PREAMBLE);
+	data_key_offset_before = sd->workbuf_data_key_offset;
+	TEST_SUCC(vb2_load_fw_preamble2(&ctx), "preamble good");
+	TEST_EQ(sd->fw_version, 0x20002, "combined version");
+	TEST_EQ(sd->workbuf_preamble_offset, data_key_offset_before,
+		"preamble offset");
+	TEST_EQ(sd->workbuf_preamble_size, pre->c.total_size, "preamble size");
+	TEST_EQ(ctx.workbuf_used,
+		sd->workbuf_preamble_offset + sd->workbuf_preamble_size,
+		"workbuf used");
+	TEST_EQ(sd->workbuf_data_key_offset, 0, "data key offset gone");
+	TEST_EQ(sd->workbuf_data_key_size, 0, "data key size gone");
+
+	/* Expected failures */
+	reset_common_data(FOR_PREAMBLE);
+	sd->workbuf_data_key_size = 0;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_FW_PREAMBLE2_DATA_KEY,
+		"preamble no data key");
+
+	reset_common_data(FOR_PREAMBLE);
+	mock_unpack_key_retval = VB2_ERROR_UNPACK_KEY_HASH_ALGORITHM;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_UNPACK_KEY_HASH_ALGORITHM,
+		"preamble unpack data key");
+
+	reset_common_data(FOR_PREAMBLE);
+	ctx.workbuf_used = ctx.workbuf_size
+		- sizeof(struct vb2_fw_preamble) + 8;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_READ_RESOURCE_OBJECT_BUF,
+		"preamble not enough workbuf for header");
+
+	reset_common_data(FOR_PREAMBLE);
+	sd->vblock_preamble_offset = sizeof(mock_vblock);
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_EX_READ_RESOURCE_SIZE,
+		"preamble read header");
+
+	reset_common_data(FOR_PREAMBLE);
+	ctx.workbuf_used = ctx.workbuf_size - sizeof(mock_vblock.p) + 8;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_READ_RESOURCE_OBJECT_BUF,
+		"preamble not enough workbuf");
+
+	reset_common_data(FOR_PREAMBLE);
+	pre->c.total_size = sizeof(mock_vblock);
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_EX_READ_RESOURCE_SIZE,
+		"preamble read full");
+
+	reset_common_data(FOR_PREAMBLE);
+	mock_verify_preamble_retval = VB2_ERROR_PREAMBLE_SIG_INVALID;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_PREAMBLE_SIG_INVALID,
+		"preamble verify");
+
+	reset_common_data(FOR_PREAMBLE);
+	pre->firmware_version = 0x10000;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_FW_PREAMBLE2_VERSION_RANGE,
+		"preamble version range");
+
+	reset_common_data(FOR_PREAMBLE);
+	pre->firmware_version = 1;
+	TEST_EQ(vb2_load_fw_preamble2(&ctx),
+		VB2_ERROR_FW_PREAMBLE2_VERSION_ROLLBACK,
+		"preamble version rollback");
+
+	reset_common_data(FOR_PREAMBLE);
+	pre->firmware_version = 3;
+	TEST_SUCC(vb2_load_fw_preamble2(&ctx),
+		  "preamble version roll forward");
+	vb2_secdata_get(&ctx, VB2_SECDATA_VERSIONS, &v);
+	TEST_EQ(v, 0x20003, "roll forward");
+
+	/* Newer version without result success doesn't roll forward */
+	reset_common_data(FOR_PREAMBLE);
+	pre->firmware_version = 3;
+	sd->last_fw_result = VB2_FW_RESULT_UNKNOWN;
+	TEST_SUCC(vb2_load_fw_preamble2(&ctx),
+		  "preamble version no roll forward 1");
+	vb2_secdata_get(&ctx, VB2_SECDATA_VERSIONS, &v);
+	TEST_EQ(v, 0x20002, "no roll forward");
+
+	/* Newer version with success but for other slot doesn't roll forward */
+	reset_common_data(FOR_PREAMBLE);
+	pre->firmware_version = 3;
+	sd->last_fw_slot = 1;
+	TEST_SUCC(vb2_load_fw_preamble2(&ctx),
+		  "preamble version no roll forward 2");
+	vb2_secdata_get(&ctx, VB2_SECDATA_VERSIONS, &v);
+	TEST_EQ(v, 0x20002, "no roll forward");
+}
+
+int main(int argc, char* argv[])
+{
+	load_keyblock_tests();
+	load_preamble_tests();
+
+	return gTestSuccess ? 0 : 255;
+}