drivers: tee: sandbox: SCP03 control emulator
Adds support for a working SCP03 emulation. Input parameters are
validated however the commands (enable, provision) executed by the TEE
are assumed to always succeed.
Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig
index 65622f3..d030280 100644
--- a/drivers/tee/optee/Kconfig
+++ b/drivers/tee/optee/Kconfig
@@ -31,6 +31,12 @@
permits to test reverse RPC calls to TEE supplicant. Should
be used only in sandbox env.
+config OPTEE_TA_SCP03
+ bool "Support SCP03 TA"
+ default y
+ help
+ Enables support for controlling (enabling, provisioning) the
+ Secure Channel Protocol 03 operation in the OP-TEE SCP03 TA.
endmenu
endif
diff --git a/drivers/tee/sandbox.c b/drivers/tee/sandbox.c
index 3a1d34d..35e8542 100644
--- a/drivers/tee/sandbox.c
+++ b/drivers/tee/sandbox.c
@@ -8,6 +8,7 @@
#include <tee.h>
#include <tee/optee_ta_avb.h>
#include <tee/optee_ta_rpc_test.h>
+#include <tee/optee_ta_scp03.h>
#include "optee/optee_msg.h"
#include "optee/optee_private.h"
@@ -68,6 +69,7 @@
return NULL;
}
+#if defined(CONFIG_OPTEE_TA_SCP03) || defined(CONFIG_OPTEE_TA_AVB)
static u32 get_attr(uint n, uint num_params, struct tee_param *params)
{
if (n >= num_params)
@@ -79,7 +81,7 @@
static u32 check_params(u8 p0, u8 p1, u8 p2, u8 p3, uint num_params,
struct tee_param *params)
{
- u8 p[] = { p0, p1, p2, p3};
+ u8 p[] = { p0, p1, p2, p3 };
uint n;
for (n = 0; n < ARRAY_SIZE(p); n++)
@@ -97,6 +99,50 @@
return TEE_ERROR_BAD_PARAMETERS;
}
+#endif
+
+#ifdef CONFIG_OPTEE_TA_SCP03
+static u32 pta_scp03_open_session(struct udevice *dev, uint num_params,
+ struct tee_param *params)
+{
+ /*
+ * We don't expect additional parameters when opening a session to
+ * this TA.
+ */
+ return check_params(TEE_PARAM_ATTR_TYPE_NONE, TEE_PARAM_ATTR_TYPE_NONE,
+ TEE_PARAM_ATTR_TYPE_NONE, TEE_PARAM_ATTR_TYPE_NONE,
+ num_params, params);
+}
+
+static u32 pta_scp03_invoke_func(struct udevice *dev, u32 func, uint num_params,
+ struct tee_param *params)
+{
+ u32 res;
+ static bool enabled;
+
+ switch (func) {
+ case PTA_CMD_ENABLE_SCP03:
+ res = check_params(TEE_PARAM_ATTR_TYPE_VALUE_INPUT,
+ TEE_PARAM_ATTR_TYPE_NONE,
+ TEE_PARAM_ATTR_TYPE_NONE,
+ TEE_PARAM_ATTR_TYPE_NONE,
+ num_params, params);
+ if (res)
+ return res;
+
+ if (!enabled) {
+ enabled = true;
+ } else {
+ }
+
+ if (params[0].u.value.a)
+
+ return TEE_SUCCESS;
+ default:
+ return TEE_ERROR_NOT_SUPPORTED;
+ }
+}
+#endif
#ifdef CONFIG_OPTEE_TA_AVB
static u32 ta_avb_open_session(struct udevice *dev, uint num_params,
@@ -357,6 +403,12 @@
.invoke_func = ta_rpc_test_invoke_func,
},
#endif
+#ifdef CONFIG_OPTEE_TA_SCP03
+ { .uuid = PTA_SCP03_UUID,
+ .open_session = pta_scp03_open_session,
+ .invoke_func = pta_scp03_invoke_func,
+ },
+#endif
};
static void sandbox_tee_get_version(struct udevice *dev,