diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/imx_ele/ele_api.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/misc/imx_ele/ele_api.c b/drivers/misc/imx_ele/ele_api.c index 0ca0a94f08c..8a14cf6aa92 100644 --- a/drivers/misc/imx_ele/ele_api.c +++ b/drivers/misc/imx_ele/ele_api.c @@ -14,6 +14,18 @@ DECLARE_GLOBAL_DATA_PTR; +static u32 compute_crc(const struct ele_msg *msg) +{ + u32 crc = 0; + size_t i = 0; + u32 *data = (u32 *)msg; + + for (i = 0; i < (msg->size - 1); i++) + crc ^= data[i]; + + return crc; +} + int ele_release_rdc(u8 core_id, u8 xrdc, u32 *response) { struct udevice *dev = gd->arch.ele_dev; @@ -552,3 +564,35 @@ int ele_return_lifecycle_update(ulong signed_msg_blk, u32 *response) return ret; } + +int ele_generate_dek_blob(u32 key_id, u32 src_paddr, u32 dst_paddr, u32 max_output_size) +{ + 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 = 8; + msg.command = ELE_GENERATE_DEK_BLOB; + msg.data[0] = key_id; + msg.data[1] = 0x0; + msg.data[2] = src_paddr; + msg.data[3] = 0x0; + msg.data[4] = dst_paddr; + msg.data[5] = max_output_size; + msg.data[6] = compute_crc(&msg); + + ret = misc_call(dev, false, &msg, size, &msg, size); + if (ret) + printf("Error: %s: ret 0x%x, response 0x%x\n", + __func__, ret, msg.data[0]); + + return ret; +} |