diff options
| -rw-r--r-- | arch/arm/mach-imx/ele.c | 33 | ||||
| -rw-r--r-- | include/mach/imx/ele.h | 2 |
2 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/ele.c b/arch/arm/mach-imx/ele.c index 0086366a33..48e8749b31 100644 --- a/arch/arm/mach-imx/ele.c +++ b/arch/arm/mach-imx/ele.c @@ -326,6 +326,39 @@ int ele_write_fuse(u16 fuse_id, u32 fuse_val, bool lock, u32 *response) } /* + * ele_write_shadow_fuse - write a fuse + * @fuse_id: The fuse to write to + * @fuse_val: The value to write to the fuse + * @lock: lock fuse after writing + * @response: on return contains the response from ELE + * + * This writes the 32bit given in @fuse_val to the fuses at @fuse_id. This is + * a permanent change, be careful. + * + * Return: 0 when the ELE call succeeds, negative error code otherwise + */ +int ele_write_shadow_fuse(u16 fuse_id, u32 fuse_val, u32 *response) +{ + struct ele_msg msg; + int ret; + + msg.version = ELE_VERSION; + msg.tag = ELE_CMD_TAG; + msg.size = 3; + msg.command = ELE_WRITE_SHADOW_REQ; + msg.data[0] = fuse_id; + + msg.data[1] = fuse_val; + + ret = imx9_s3mua_call(&msg); + + if (response) + *response = msg.data[0]; + + return ret; +} + +/* * ele_forward_lifecycle - forward lifecycle * @lc: The lifecycle value to forward to * @response: on return contains the response from ELE diff --git a/include/mach/imx/ele.h b/include/mach/imx/ele.h index da4b0aa50d..7ba8afde20 100644 --- a/include/mach/imx/ele.h +++ b/include/mach/imx/ele.h @@ -45,6 +45,7 @@ #define ELE_ATTEST_REQ (0xDB) #define ELE_RELEASE_PATCH_REQ (0xDC) #define ELE_OTP_SEQ_SWITH_REQ (0xDD) +#define ELE_WRITE_SHADOW_REQ (0xF2) #define ELE_READ_SHADOW_REQ (0xF3) /* ELE failure indications */ @@ -152,6 +153,7 @@ int ele_call(struct ele_msg *msg); int ele_read_common_fuse(u16 fuse_id, u32 *fuse_word, u32 *response); int ele_release_rdc(u8 core_id, u8 xrdc, u32 *response); int ele_read_shadow_fuse(u16 fuse_id, u32 *fuse_word, u32 *response); +int ele_write_shadow_fuse(u16 fuse_id, u32 fuse_val, u32 *response); int ele_get_info(struct ele_get_info_data *info); int ele_write_fuse(u16 fuse_id, u32 fuse_val, bool lock, u32 *response); int ele_authenticate_container(unsigned long addr, u32 *response); |