config CMD_DEKBLOB
bool "Support the 'dek_blob' command"
+ select IMX_CAAM_DEK_ENCAP if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP
+ select IMX_OPTEE_DEK_ENCAP if ARCH_IMX8M
help
This enables the 'dek_blob' command which is used with the
Freescale secure boot mechanism. This command encapsulates and
creates a blob of data. See also CMD_BLOB and doc/imx/habv4/* for
more information.
+config IMX_CAAM_DEK_ENCAP
+ bool "Support the DEK blob encapsulation with CAAM U-Boot driver"
+ help
+ This enables the DEK blob encapsulation with the U-Boot CAAM driver.
+ This option is only available on imx6, imx7 and imx7ulp.
+
+config IMX_OPTEE_DEK_ENCAP
+ select TEE
+ select OPTEE
+ bool "Support the DEK blob encapsulation with OP-TEE"
+ help
+ This enabled the DEK blob encapsulation with OP-TEE. The communication
+ with OP-TEE is done through a SMC call and OP-TEE shared memory. This
+ option is available on imx8mm.
+
config CMD_PRIBLOB
bool "Support the set_priblob_bitfield command"
depends on HAS_CAAM && IMX_HAB
#include <fsl_sec.h>
#include <asm/arch/clock.h>
#include <mapmem.h>
+#include <tee.h>
/**
* blob_dek() - Encapsulate the DEK as a blob using CAM's Key
*
* Returns zero on success,and negative on error.
*/
-static int blob_encap_dek(const u8 *src, u8 *dst, u32 len)
+#ifdef CONFIG_IMX_CAAM_DEK_ENCAP
+static int blob_encap_dek(u32 src_addr, u32 dst_addr, u32 len)
{
- int ret = 0;
+ u8 *src_ptr, *dst_ptr;
+
+ src_ptr = map_sysmem(src_addr, len / 8);
+ dst_ptr = map_sysmem(dst_addr, BLOB_SIZE(len / 8));
hab_caam_clock_enable(1);
}
len /= 8;
- ret = blob_dek(src, dst, len);
+ return blob_dek(src_ptr, dst_ptr, len);
+}
+#endif /* CONFIG_IMX_CAAM_DEK_ENCAP */
+
+#ifdef CONFIG_IMX_OPTEE_DEK_ENCAP
+
+#define PTA_DEK_BLOB_PTA_UUID {0xef477737, 0x0db1, 0x4a9d, \
+ {0x84, 0x37, 0xf2, 0xf5, 0x35, 0xc0, 0xbd, 0x92} }
+
+#define OPTEE_BLOB_HDR_SIZE 8
+
+static int blob_encap_dek(u32 src_addr, u32 dst_addr, u32 len)
+{
+ struct udevice *dev = NULL;
+ struct tee_shm *shm_input, *shm_output;
+ struct tee_open_session_arg arg = {0};
+ struct tee_invoke_arg arg_func = {0};
+ const struct tee_optee_ta_uuid uuid = PTA_DEK_BLOB_PTA_UUID;
+ struct tee_param param[4] = {0};
+ int ret;
+
+ /* Get tee device */
+ dev = tee_find_device(NULL, NULL, NULL, NULL);
+ if (!dev) {
+ printf("Cannot get OP-TEE device\n");
+ return -1;
+ }
+
+ /* Set TA UUID */
+ tee_optee_ta_uuid_to_octets(arg.uuid, &uuid);
+
+ /* Open TA session */
+ ret = tee_open_session(dev, &arg, 0, NULL);
+ if (ret < 0) {
+ printf("Cannot open session with PTA Blob 0x%X\n", ret);
+ return -1;
+ }
+
+ /* Allocate shared input and output buffers for TA */
+ ret = tee_shm_register(dev, (void *)(ulong)src_addr, len / 8, 0x0, &shm_input);
+ if (ret < 0) {
+ printf("Cannot register input shared memory 0x%X\n", ret);
+ goto error;
+ }
+
+ ret = tee_shm_register(dev, (void *)(ulong)dst_addr,
+ BLOB_SIZE(len / 8) + OPTEE_BLOB_HDR_SIZE,
+ 0x0, &shm_output);
+ if (ret < 0) {
+ printf("Cannot register output shared memory 0x%X\n", ret);
+ goto error;
+ }
+
+ param[0].u.memref.shm = shm_input;
+ param[0].u.memref.size = shm_input->size;
+ param[0].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT;
+ param[1].u.memref.shm = shm_output;
+ param[1].u.memref.size = shm_output->size;
+ param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_OUTPUT;
+ param[2].attr = TEE_PARAM_ATTR_TYPE_NONE;
+ param[3].attr = TEE_PARAM_ATTR_TYPE_NONE;
+
+ arg_func.func = 0;
+ arg_func.session = arg.session;
+
+ /* Generate DEK blob */
+ arg_func.session = arg.session;
+ ret = tee_invoke_func(dev, &arg_func, 4, param);
+ if (ret < 0)
+ printf("Cannot generate Blob with PTA DEK Blob 0x%X\n", ret);
+
+error:
+ /* Free shared memory */
+ tee_shm_free(shm_input);
+ tee_shm_free(shm_output);
+
+ /* Close session */
+ ret = tee_close_session(dev, arg.session);
+ if (ret < 0)
+ printf("Cannot close session with PTA DEK Blob 0x%X\n", ret);
return ret;
}
+#endif /* CONFIG_IMX_OPTEE_DEK_ENCAP */
/**
* do_dek_blob() - Handle the "dek_blob" command-line command
char *const argv[])
{
uint32_t src_addr, dst_addr, len;
- uint8_t *src_ptr, *dst_ptr;
- int ret = 0;
if (argc != 4)
return CMD_RET_USAGE;
dst_addr = simple_strtoul(argv[2], NULL, 16);
len = simple_strtoul(argv[3], NULL, 10);
- src_ptr = map_sysmem(src_addr, len/8);
- dst_ptr = map_sysmem(dst_addr, BLOB_SIZE(len/8));
-
- ret = blob_encap_dek(src_ptr, dst_ptr, len);
-
- return ret;
+ return blob_encap_dek(src_addr, dst_addr, len);
}
/***************************************************/
projects / platform / kernel / u-boot.git / commitdiff