vboot: update vboot2 functions to use new vb2_error_t

To make explicit when vboot2 error codes should be returned,
use the new vb2_error_t type on all functions which return
VB2_ERROR_* constants.

Additionally, add required vboot submodule commit id e6700f4c:
    2019-07-31 14:12:30 +0800 - (vboot: update vboot2 functions to use new vb2_error_t)

NOTE: This patch was merged separately on the Chromium tree:
https://chromium-review.googlesource.com/c/1728499

BUG=b:124141368, chromium:988410
TEST=make clean && make test-abuild
BRANCH=none

Change-Id: I804c2b407e496d0c8eb9833be629b7c40118415c
Signed-off-by: Joel Kitching <kitching@google.com>
Cq-Depend: chromium:1728292
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34860
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

5 files changed, 29 insertions, 25 deletions

diff --git a/src/security/vboot/secdata_mock.c b/src/security/vboot/secdata_mock.c
index 43206df6b94e..de58bf5909dc 100644
--- a/src/security/vboot/secdata_mock.c
+++ b/src/security/vboot/secdata_mock.c
@@ -38,38 +38,39 @@
 
 #include "antirollback.h"
 
-int vb2ex_tpm_clear_owner(struct vb2_context *ctx)
+vb2_error_t vb2ex_tpm_clear_owner(struct vb2_context *ctx)
 {
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_read_space_firmware(struct vb2_context *ctx)
+vb2_error_t antirollback_read_space_firmware(struct vb2_context *ctx)
 {
 	vb2api_secdata_create(ctx);
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_write_space_firmware(struct vb2_context *ctx)
+vb2_error_t antirollback_write_space_firmware(struct vb2_context *ctx)
 {
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_lock_space_firmware(void)
+vb2_error_t antirollback_lock_space_firmware(void)
 {
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_lock_space_rec_hash(void)
+vb2_error_t antirollback_lock_space_rec_hash(void)
 {
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_read_space_rec_hash(uint8_t *data, uint32_t size)
+vb2_error_t antirollback_read_space_rec_hash(uint8_t *data, uint32_t size)
 {
 	return VB2_SUCCESS;
 }
 
-uint32_t antirollback_write_space_rec_hash(const uint8_t *data, uint32_t size)
+vb2_error_t antirollback_write_space_rec_hash(const uint8_t *data,
+					      uint32_t size)
 {
 	return VB2_SUCCESS;
 }
diff --git a/src/security/vboot/secdata_tpm.c b/src/security/vboot/secdata_tpm.c
index 2b98883ef692..38a1810d7fb5 100644
--- a/src/security/vboot/secdata_tpm.c
+++ b/src/security/vboot/secdata_tpm.c
@@ -474,7 +474,7 @@ uint32_t antirollback_write_space_rec_hash(const uint8_t *data, uint32_t size)
 	return write_secdata(REC_HASH_NV_INDEX, data, size);
 }
 
-int vb2ex_tpm_clear_owner(struct vb2_context *ctx)
+vb2_error_t vb2ex_tpm_clear_owner(struct vb2_context *ctx)
 {
 	uint32_t rv;
 	printk(BIOS_INFO, "Clearing TPM owner\n");
diff --git a/src/security/vboot/tpm_common.c b/src/security/vboot/tpm_common.c
index 1a07ef6def41..1db7189d7a8a 100644
--- a/src/security/vboot/tpm_common.c
+++ b/src/security/vboot/tpm_common.c
@@ -30,12 +30,12 @@ uint32_t vboot_setup_tpm(struct vb2_context *ctx)
 	return result;
 }
 
-uint32_t vboot_extend_pcr(struct vb2_context *ctx, int pcr,
-			  enum vb2_pcr_digest which_digest)
+vb2_error_t vboot_extend_pcr(struct vb2_context *ctx, int pcr,
+			     enum vb2_pcr_digest which_digest)
 {
 	uint8_t buffer[VB2_PCR_DIGEST_RECOMMENDED_SIZE];
 	uint32_t size = sizeof(buffer);
-	int rv;
+	vb2_error_t rv;
 
 	rv = vb2api_get_pcr_digest(ctx, which_digest, buffer, &size);
 	if (rv != VB2_SUCCESS)
diff --git a/src/security/vboot/tpm_common.h b/src/security/vboot/tpm_common.h
index 6bb32bbf1d79..e1faa0ca4545 100644
--- a/src/security/vboot/tpm_common.h
+++ b/src/security/vboot/tpm_common.h
@@ -17,8 +17,8 @@
 uint32_t vboot_setup_tpm(struct vb2_context *ctx);
 
 /* vboot_extend_pcr function for vb2 context */
-uint32_t vboot_extend_pcr(struct vb2_context *ctx, int pcr,
-			  enum vb2_pcr_digest which_digest);
+vb2_error_t vboot_extend_pcr(struct vb2_context *ctx, int pcr,
+			     enum vb2_pcr_digest which_digest);
 
 #else
 
diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c
index 7f00df57969c..d04974077622 100644
--- a/src/security/vboot/vboot_logic.c
+++ b/src/security/vboot/vboot_logic.c
@@ -55,11 +55,11 @@ void vb2ex_printf(const char *func, const char *fmt, ...)
 	return;
 }
 
-int vb2ex_read_resource(struct vb2_context *ctx,
-			enum vb2_resource_index index,
-			uint32_t offset,
-			void *buf,
-			uint32_t size)
+vb2_error_t vb2ex_read_resource(struct vb2_context *ctx,
+				enum vb2_resource_index index,
+				uint32_t offset,
+				void *buf,
+				uint32_t size)
 {
 	struct region_device rdev;
 	const char *name;
@@ -88,19 +88,21 @@ int vb2ex_read_resource(struct vb2_context *ctx,
 }
 
 /* No-op stubs that can be overridden by SoCs with hardware crypto support. */
-__weak int vb2ex_hwcrypto_digest_init(enum vb2_hash_algorithm hash_alg,
-				      uint32_t data_size)
+__weak vb2_error_t vb2ex_hwcrypto_digest_init(enum vb2_hash_algorithm hash_alg,
+					      uint32_t data_size)
 {
 	return VB2_ERROR_EX_HWCRYPTO_UNSUPPORTED;
 }
 
-__weak int vb2ex_hwcrypto_digest_extend(const uint8_t *buf, uint32_t size)
+__weak vb2_error_t vb2ex_hwcrypto_digest_extend(const uint8_t *buf,
+						uint32_t size)
 {
 	BUG(); /* Should never get called if init() returned an error. */
 	return VB2_ERROR_UNKNOWN;
 }
 
-__weak int vb2ex_hwcrypto_digest_finalize(uint8_t *digest, uint32_t digest_size)
+__weak vb2_error_t vb2ex_hwcrypto_digest_finalize(uint8_t *digest,
+						  uint32_t digest_size)
 {
 	BUG(); /* Should never get called if init() returned an error. */
 	return VB2_ERROR_UNKNOWN;
@@ -169,7 +171,8 @@ static int handle_digest_result(void *slot_hash, size_t slot_hash_sz)
 	return 0;
 }
 
-static int hash_body(struct vb2_context *ctx, struct region_device *fw_main)
+static vb2_error_t hash_body(struct vb2_context *ctx,
+			     struct region_device *fw_main)
 {
 	uint64_t load_ts;
 	uint32_t expected_size;
@@ -178,7 +181,7 @@ static int hash_body(struct vb2_context *ctx, struct region_device *fw_main)
 	const size_t hash_digest_sz = sizeof(hash_digest);
 	size_t block_size = sizeof(block);
 	size_t offset;
-	int rv;
+	vb2_error_t rv;
 
 	/* Clear the full digest so that any hash digests less than the
 	 * max have trailing zeros. */
@@ -313,7 +316,7 @@ void verstage_main(void)
 {
 	struct vb2_context ctx;
 	struct region_device fw_main;
-	int rv;
+	vb2_error_t rv;
 
 	timestamp_add_now(TS_START_VBOOT);