[PATCH] imx: ele_ahab: Add ahab_commit command support

[Mathieu Othacehe]

This message is used to commit into the fuses any new SRK revocation and
FW version information that have been found into the NXP (ELE FW) and
OEM containers.

Signed-off-by: Mathieu Othacehe <othacehe at gnu.org>
---
 arch/arm/include/asm/mach-imx/ele_api.h |  2 ++
 arch/arm/mach-imx/ele_ahab.c            | 29 ++++++++++++++++++++++
 drivers/misc/imx_ele/ele_api.c          | 32 +++++++++++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/arch/arm/include/asm/mach-imx/ele_api.h b/arch/arm/include/asm/mach-imx/ele_api.h
index cfd4ecebb62..a29b849d903 100644
--- a/arch/arm/include/asm/mach-imx/ele_api.h
+++ b/arch/arm/include/asm/mach-imx/ele_api.h
@@ -24,6 +24,7 @@
 #define ELE_GET_FW_VERSION_REQ (0x9D)
 #define ELE_RET_LIFECYCLE_UP_REQ (0xA0)
 #define ELE_GET_EVENTS_REQ (0xA2)
+#define ELE_COMMIT_REQ (0xA8)
 #define ELE_START_RNG (0xA3)
 #define ELE_GENERATE_DEK_BLOB (0xAF)
 #define ELE_ENABLE_PATCH_REQ (0xC3)
@@ -142,6 +143,7 @@ int ele_read_common_fuse(u16 fuse_id, u32 *fuse_words, u32 fuse_num, u32 *respon
 int ele_release_caam(u32 core_did, u32 *response);
 int ele_get_fw_version(u32 *fw_version, u32 *sha1, u32 *response);
 int ele_get_events(u32 *events, u32 *events_cnt, u32 *response);
+int ele_commit(u16 fuse_id, u32 *response, u32 *info_type);
 int ele_generate_dek_blob(u32 key_id, u32 src_paddr, u32 dst_paddr, u32 max_output_size);
 int ele_dump_buffer(u32 *buffer, u32 buffer_length);
 int ele_get_info(struct ele_get_info_data *info, u32 *response);
diff --git a/arch/arm/mach-imx/ele_ahab.c b/arch/arm/mach-imx/ele_ahab.c
index 295c055ad0a..d02316ed6cb 100644
--- a/arch/arm/mach-imx/ele_ahab.c
+++ b/arch/arm/mach-imx/ele_ahab.c
@@ -625,6 +625,29 @@ static int do_ahab_return_lifecycle(struct cmd_tbl *cmdtp, int flag, int argc, c
 	return CMD_RET_SUCCESS;
 }
 
+static int do_ahab_commit(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
+{
+	u32 index;
+	u32 resp;
+	u32 info_type;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	index = simple_strtoul(argv[1], NULL, 16);
+	printf("Commit index is 0x%x\n", index);
+
+	if (ele_commit(index, &resp, &info_type)) {
+		printf("Error in AHAB commit\n");
+		return -EIO;
+	}
+
+	printf("Ahab commit succeeded. Information type is 0x%x\n", info_type);
+
+	return 0;
+}
+
 U_BOOT_CMD(auth_cntr, CONFIG_SYS_MAXARGS, 1, do_authenticate,
 	   "autenticate OS container via AHAB",
 	   "addr\n"
@@ -657,3 +680,9 @@ U_BOOT_CMD(ahab_return_lifecycle, CONFIG_SYS_MAXARGS, 1, do_ahab_return_lifecycl
 	   "addr\n"
 	   "addr - Return lifecycle message block signed by OEM SRK\n"
 );
+
+U_BOOT_CMD(ahab_commit, CONFIG_SYS_MAXARGS, 1, do_ahab_commit,
+	   "commit into the fuses any new SRK revocation and FW version information\n"
+	   "that have been found into the NXP (ELE FW) and OEM containers",
+	   ""
+);
diff --git a/drivers/misc/imx_ele/ele_api.c b/drivers/misc/imx_ele/ele_api.c
index 0c017734a49..e0ec22c7abf 100644
--- a/drivers/misc/imx_ele/ele_api.c
+++ b/drivers/misc/imx_ele/ele_api.c
@@ -528,6 +528,38 @@ int ele_start_rng(void)
 	return ret;
 }
 
+int ele_commit(u16 fuse_id, u32 *response, u32 *info_type)
+{
+	struct udevice *dev = gd->arch.ele_dev;
+	int size = sizeof(struct ele_msg);
+	struct ele_msg msg;
+	int ret = 0;
+
+	if (!dev) {
+		printf("ele dev is not initialized\n");
+		return -ENODEV;
+	}
+
+	msg.version = ELE_VERSION;
+	msg.tag = ELE_CMD_TAG;
+	msg.size = 2;
+	msg.command = ELE_COMMIT_REQ;
+	msg.data[0] = fuse_id;
+
+	ret = misc_call(dev, false, &msg, size, &msg, size);
+	if (ret)
+		printf("Error: %s: ret %d, fuse_id 0x%x, response 0x%x\n",
+		       __func__, ret, fuse_id, msg.data[0]);
+
+	if (response)
+		*response = msg.data[0];
+
+	if (info_type)
+		*info_type = msg.data[1];
+
+	return ret;
+}
+
 int ele_write_secure_fuse(ulong signed_msg_blk, u32 *response)
 {
 	struct udevice *dev = gd->arch.ele_dev;
-- 
2.41.0