On Wed, May 10, 2023 at 1:19 PM Sumit Garg sumit.garg@linaro.org wrote:
On Tue, 9 May 2023 at 13:03, Rijo Thomas Rijo-john.Thomas@amd.com wrote:
After TEE has completed processing of TEE_CMD_ID_LOAD_TA, set proper value in 'return_origin' argument passed by open_session() call. To do so, add 'return_origin' field to the structure tee_cmd_load_ta. The Trusted OS shall update return_origin as part of TEE processing.
This change to 'struct tee_cmd_load_ta' interface requires a similar update in AMD-TEE Trusted OS's TEE_CMD_ID_LOAD_TA interface.
This patch has been verified on Phoenix Birman setup. On older APUs, return_origin value will be 0.
Cc: stable@vger.kernel.org Fixes: 757cc3e9ff1d ("tee: add AMD-TEE driver") Tested-by: Sourabh Das sourabh.das@amd.com Signed-off-by: Rijo Thomas Rijo-john.Thomas@amd.com
v2:
- Added Fixes tag.
drivers/tee/amdtee/amdtee_if.h | 10 ++++++---- drivers/tee/amdtee/call.c | 30 +++++++++++++++++------------- 2 files changed, 23 insertions(+), 17 deletions(-)
Acked-by: Sumit Garg sumit.garg@linaro.org
I'm picking up this.
Thanks, Jens
-Sumit
diff --git a/drivers/tee/amdtee/amdtee_if.h b/drivers/tee/amdtee/amdtee_if.h index ff48c3e47375..e2014e21530a 100644 --- a/drivers/tee/amdtee/amdtee_if.h +++ b/drivers/tee/amdtee/amdtee_if.h @@ -118,16 +118,18 @@ struct tee_cmd_unmap_shared_mem {
/**
- struct tee_cmd_load_ta - load Trusted Application (TA) binary into TEE
- @low_addr: [in] bits [31:0] of the physical address of the TA binary
- @hi_addr: [in] bits [63:32] of the physical address of the TA binary
- @size: [in] size of TA binary in bytes
- @ta_handle: [out] return handle of the loaded TA
- @low_addr: [in] bits [31:0] of the physical address of the TA binary
- @hi_addr: [in] bits [63:32] of the physical address of the TA binary
- @size: [in] size of TA binary in bytes
- @ta_handle: [out] return handle of the loaded TA
*/
- @return_origin: [out] origin of return code after TEE processing
struct tee_cmd_load_ta { u32 low_addr; u32 hi_addr; u32 size; u32 ta_handle;
u32 return_origin;};
/** diff --git a/drivers/tee/amdtee/call.c b/drivers/tee/amdtee/call.c index e8cd9aaa3467..e9b63dcb3194 100644 --- a/drivers/tee/amdtee/call.c +++ b/drivers/tee/amdtee/call.c @@ -423,19 +423,23 @@ int handle_load_ta(void *data, u32 size, struct tee_ioctl_open_session_arg *arg) if (ret) { arg->ret_origin = TEEC_ORIGIN_COMMS; arg->ret = TEEC_ERROR_COMMUNICATION;
} else if (arg->ret == TEEC_SUCCESS) {ret = get_ta_refcount(load_cmd.ta_handle);if (!ret) {arg->ret_origin = TEEC_ORIGIN_COMMS;arg->ret = TEEC_ERROR_OUT_OF_MEMORY;/* Unload the TA on error */unload_cmd.ta_handle = load_cmd.ta_handle;psp_tee_process_cmd(TEE_CMD_ID_UNLOAD_TA,(void *)&unload_cmd,sizeof(unload_cmd), &ret);} else {set_session_id(load_cmd.ta_handle, 0, &arg->session);
} else {arg->ret_origin = load_cmd.return_origin;if (arg->ret == TEEC_SUCCESS) {ret = get_ta_refcount(load_cmd.ta_handle);if (!ret) {arg->ret_origin = TEEC_ORIGIN_COMMS;arg->ret = TEEC_ERROR_OUT_OF_MEMORY;/* Unload the TA on error */unload_cmd.ta_handle = load_cmd.ta_handle;psp_tee_process_cmd(TEE_CMD_ID_UNLOAD_TA,(void *)&unload_cmd,sizeof(unload_cmd), &ret);} else {set_session_id(load_cmd.ta_handle, 0, &arg->session);} } } mutex_unlock(&ta_refcount_mutex);-- 2.25.1