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tee: optee: discover services dependent on tee-supplicant

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Makes OP-TEE to enumerate also services depending on tee-supplicant
support in U-Boot. This change allows OP-TEE services like fTPM TA
to be discovered and get a TPM device registered in U-Boot.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Etienne Carriere 2022-12-07 16:30:00 +01:00 committed by Ilias Apalodimas
parent 476a3d58df
commit fe8a4ed011
1 changed files with 23 additions and 9 deletions
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30
drivers/tee/optee/core.c
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@ -102,13 +102,14 @@ static int bind_service_list(struct udevice *dev, struct tee_shm *service_list,
return 0; return 0;
} }
static int __enum_services(struct udevice *dev, struct tee_shm *shm, size_t *shm_size, u32 tee_sess) static int __enum_services(struct udevice *dev, struct tee_shm *shm, size_t *shm_size, u32 tee_sess,
unsigned int pta_cmd)
{ {
struct tee_invoke_arg arg = { }; struct tee_invoke_arg arg = { };
struct tee_param param = { }; struct tee_param param = { };
int ret = 0; int ret = 0;
arg.func = PTA_CMD_GET_DEVICES; arg.func = pta_cmd;
arg.session = tee_sess; arg.session = tee_sess;
/* Fill invoke cmd params */ /* Fill invoke cmd params */
@ -118,7 +119,7 @@ static int __enum_services(struct udevice *dev, struct tee_shm *shm, size_t *shm
ret = tee_invoke_func(dev, &arg, 1, &param); ret = tee_invoke_func(dev, &arg, 1, &param);
if (ret || (arg.ret && arg.ret != TEE_ERROR_SHORT_BUFFER)) { if (ret || (arg.ret && arg.ret != TEE_ERROR_SHORT_BUFFER)) {
dev_err(dev, "PTA_CMD_GET_DEVICES invoke function err: 0x%x\n", arg.ret); dev_err(dev, "Enumeration command 0x%x failed: 0x%x\n", pta_cmd, arg.ret);
return -EINVAL; return -EINVAL;
} }
@ -127,12 +128,13 @@ static int __enum_services(struct udevice *dev, struct tee_shm *shm, size_t *shm
return 0; return 0;
} }
static int enum_services(struct udevice *dev, struct tee_shm **shm, size_t *count, u32 tee_sess) static int enum_services(struct udevice *dev, struct tee_shm **shm, size_t *count, u32 tee_sess,
unsigned int pta_cmd)
{ {
size_t shm_size = 0; size_t shm_size = 0;
int ret; int ret;
ret = __enum_services(dev, NULL, &shm_size, tee_sess); ret = __enum_services(dev, NULL, &shm_size, tee_sess, pta_cmd);
if (ret) if (ret)
return ret; return ret;
@ -142,7 +144,7 @@ static int enum_services(struct udevice *dev, struct tee_shm **shm, size_t *coun
return ret; return ret;
} }
ret = __enum_services(dev, *shm, &shm_size, tee_sess); ret = __enum_services(dev, *shm, &shm_size, tee_sess, pta_cmd);
if (!ret) if (!ret)
*count = shm_size / sizeof(struct tee_optee_ta_uuid); *count = shm_size / sizeof(struct tee_optee_ta_uuid);
@ -174,20 +176,32 @@ static int bind_service_drivers(struct udevice *dev)
struct tee_shm *service_list = NULL; struct tee_shm *service_list = NULL;
size_t service_count; size_t service_count;
u32 tee_sess; u32 tee_sess;
int ret; int ret, ret2;
ret = open_enum_session(dev, &tee_sess); ret = open_enum_session(dev, &tee_sess);
if (ret) if (ret)
return ret; return ret;
ret = enum_services(dev, &service_list, &service_count, tee_sess); ret = enum_services(dev, &service_list, &service_count, tee_sess,
PTA_CMD_GET_DEVICES);
if (!ret) if (!ret)
ret = bind_service_list(dev, service_list, service_count); ret = bind_service_list(dev, service_list, service_count);
tee_shm_free(service_list); tee_shm_free(service_list);
ret2 = enum_services(dev, &service_list, &service_count, tee_sess,
PTA_CMD_GET_DEVICES_SUPP);
if (!ret2)
ret2 = bind_service_list(dev, service_list, service_count);
tee_shm_free(service_list);
tee_close_session(dev, tee_sess); tee_close_session(dev, tee_sess);
if (ret)
return ret; return ret;
return ret2;
} }
/** /**