From: Ye Li ye.li@nxp.com
Add ELE APIs to support read and write shadow fuses
Reviewed-by: Peng Fan peng.fan@nxp.com Signed-off-by: Ye Li ye.li@nxp.com Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/include/asm/mach-imx/ele_api.h | 4 ++ drivers/misc/imx_ele/ele_api.c | 66 +++++++++++++++++++++++++ 2 files changed, 70 insertions(+)
diff --git a/arch/arm/include/asm/mach-imx/ele_api.h b/arch/arm/include/asm/mach-imx/ele_api.h index d4ac567e7ed..19d12696a1e 100644 --- a/arch/arm/include/asm/mach-imx/ele_api.h +++ b/arch/arm/include/asm/mach-imx/ele_api.h @@ -47,6 +47,8 @@ #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 */ #define ELE_ROM_PING_FAILURE_IND (0x0A) @@ -154,4 +156,6 @@ int ele_release_m33_trout(void); int ele_write_secure_fuse(ulong signed_msg_blk, u32 *response); int ele_return_lifecycle_update(ulong signed_msg_blk, u32 *response); int ele_start_rng(void); +int ele_write_shadow_fuse(u32 fuse_id, u32 fuse_val, u32 *response); +int ele_read_shadow_fuse(u32 fuse_id, u32 *fuse_val, u32 *response); #endif diff --git a/drivers/misc/imx_ele/ele_api.c b/drivers/misc/imx_ele/ele_api.c index fd57928c5f8..62cf1a137ea 100644 --- a/drivers/misc/imx_ele/ele_api.c +++ b/drivers/misc/imx_ele/ele_api.c @@ -268,6 +268,72 @@ int ele_write_fuse(u16 fuse_id, u32 fuse_val, bool lock, u32 *response) return ret; }
+int ele_write_shadow_fuse(u32 fuse_id, u32 fuse_val, u32 *response) +{ + struct udevice *dev = gd->arch.ele_dev; + int size = sizeof(struct ele_msg); + struct ele_msg msg; + int ret; + + if (!dev) { + printf("ele dev is not initialized\n"); + return -ENODEV; + } + + 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 = 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]; + + return ret; +} + +int ele_read_shadow_fuse(u32 fuse_id, u32 *fuse_val, u32 *response) +{ + struct udevice *dev = gd->arch.ele_dev; + int size = sizeof(struct ele_msg); + struct ele_msg msg = {}; + int ret; + + if (!dev) { + printf("ele dev is not initialized\n"); + return -ENODEV; + } + + if (!fuse_val) { + printf("Invalid parameters for shadow read\n"); + return -EINVAL; + } + + msg.version = ELE_VERSION; + msg.tag = ELE_CMD_TAG; + msg.size = 2; + msg.command = ELE_READ_SHADOW_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]; + + *fuse_val = msg.data[1]; + + return ret; +} + int ele_release_caam(u32 core_did, u32 *response) { struct udevice *dev = gd->arch.ele_dev;