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tee: amdtee: Add return_origin to 'struct tee_cmd_load_ta'

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commit 436eeae0411acdfc54521ddea80ee76d4ae8a7ea upstream.

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: 757cc3e9ff ("tee: add AMD-TEE driver")
Tested-by: Sourabh Das <sourabh.das@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rijo Thomas 2023-05-09 13:02:40 +05:30 committed by Greg Kroah-Hartman
parent d088bea08a
commit 939f00e482
2 changed files with 22 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/tee/amdtee/amdtee_if.h
View File

@ -122,12 +122,14 @@ struct tee_cmd_unmap_shared_mem {
* @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;
};
/**

6
drivers/tee/amdtee/call.c
View File

@ -423,7 +423,10 @@ 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) {
} 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;
@ -438,6 +441,7 @@ int handle_load_ta(void *data, u32 size, struct tee_ioctl_open_session_arg *arg)
set_session_id(load_cmd.ta_handle, 0, &arg->session);
}
}
}
mutex_unlock(&ta_refcount_mutex);
pr_debug("load TA: TA handle = 0x%x, RO = 0x%x, ret = 0x%x\n",