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imx: ele_ahab: Add ahab_commit command support

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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@gnu.org>
This commit is contained in:
Mathieu Othacehe 2024-03-21 08:19:53 +01:00 • committed by Fabio Estevam
parent c20e449225
commit 6bb745844c
3 changed files with 63 additions and 0 deletions
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2
arch/arm/include/asm/mach-imx/ele_api.h
View file

@ -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);

29
arch/arm/mach-imx/ele_ahab.c
View file

@ -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",
""
);

32
drivers/misc/imx_ele/ele_api.c
View file

@ -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;