[U-Boot] [PATCH v2 09/15] test: tee: test TEE uclass

[Jens Wiklander]

Tests the TEE uclass with a sandbox tee driver.

Signed-off-by: Jens Wiklander <jens.wiklander at linaro.org>
---
 drivers/tee/Kconfig |   5 +-
 test/dm/Makefile    |   1 +
 test/dm/tee.c       | 182 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 185 insertions(+), 3 deletions(-)
 create mode 100644 test/dm/tee.c

diff --git a/drivers/tee/Kconfig b/drivers/tee/Kconfig
index 3e7fe6ddcc5d..032aff4777c6 100644
--- a/drivers/tee/Kconfig
+++ b/drivers/tee/Kconfig
@@ -1,8 +1,8 @@
 # Generic Trusted Execution Environment Configuration
 config TEE
 	bool "Trusted Execution Environment support"
-	depends on ARM && (ARM64 || CPU_V7A)
-	select ARM_SMCCC
+	depends on (ARM && (ARM64 || CPU_V7A)) || SANDBOX
+	select ARM_SMCCC if ARM
 	help
 	  This implements a generic interface towards a Trusted Execution
 	  Environment (TEE).
@@ -14,5 +14,4 @@ menu "TEE drivers"
 source "drivers/tee/optee/Kconfig"
 
 endmenu
-
 endif
diff --git a/test/dm/Makefile b/test/dm/Makefile
index d2ed96c61533..272374b92fb0 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -44,4 +44,5 @@ obj-$(CONFIG_DM_VIDEO) += video.o
 obj-$(CONFIG_ADC) += adc.o
 obj-$(CONFIG_SPMI) += spmi.o
 obj-$(CONFIG_WDT) += wdt.o
+obj-$(CONFIG_TEE) += tee.o
 endif
diff --git a/test/dm/tee.c b/test/dm/tee.c
new file mode 100644
index 000000000000..bf9db0c130ac
--- /dev/null
+++ b/test/dm/tee.c
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Linaro Limited
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <tee.h>
+#include <test/ut.h>
+
+struct sandbox_tee_state {
+	u32 session;
+	int num_shms;
+};
+
+static void sandbox_tee_get_version(struct udevice *dev,
+				    struct tee_version_data *vers)
+{
+	memset(vers, 0, sizeof(*vers));
+}
+
+static int sandbox_tee_close_session(struct udevice *dev, u32 session)
+{
+	struct sandbox_tee_state *state = dev_get_priv(dev);
+
+	if (!state->session || state->session != session)
+		return -EINVAL;
+
+	state->session = 0;
+
+	return 0;
+}
+
+static int sandbox_tee_open_session(struct udevice *dev,
+				    struct tee_open_session_arg *arg,
+				    ulong num_params, struct tee_param *params)
+{
+	struct sandbox_tee_state *state = dev_get_priv(dev);
+
+	if (state->session)
+		return -EBUSY;
+
+	state->session = 1;
+	arg->session = state->session;
+
+	return 0;
+}
+
+static int sandbox_tee_invoke_func(struct udevice *dev,
+				   struct tee_invoke_arg *arg,
+				   ulong num_params, struct tee_param *params)
+{
+	struct sandbox_tee_state *state = dev_get_priv(dev);
+
+	if (!arg->session)
+		return -EINVAL;
+
+	if (arg->session != state->session)
+		return -EINVAL;
+
+	if (arg->func != 1)
+		return -ENOENT;
+
+	return 0;
+}
+
+static int sandbox_tee_shm_register(struct udevice *dev, struct tee_shm *shm)
+{
+	struct sandbox_tee_state *state = dev_get_priv(dev);
+
+	state->num_shms++;
+
+	return 0;
+}
+
+static int sandbox_tee_shm_unregister(struct udevice *dev, struct tee_shm *shm)
+{
+	struct sandbox_tee_state *state = dev_get_priv(dev);
+
+	state->num_shms--;
+
+	return 0;
+}
+
+static const struct tee_driver_ops sandbox_tee_ops = {
+	.get_version = sandbox_tee_get_version,
+	.open_session = sandbox_tee_open_session,
+	.close_session = sandbox_tee_close_session,
+	.invoke_func = sandbox_tee_invoke_func,
+	.shm_register = sandbox_tee_shm_register,
+	.shm_unregister = sandbox_tee_shm_unregister,
+};
+
+static const struct udevice_id sandbox_tee_match[] = {
+	{ .compatible = "sandbox,tee" },
+	{},
+};
+
+U_BOOT_DRIVER(sandbox_tee) = {
+	.name = "sandbox_tee",
+	.id = UCLASS_TEE,
+	.of_match = sandbox_tee_match,
+	.ops = &sandbox_tee_ops,
+	.priv_auto_alloc_size = sizeof(struct sandbox_tee_state),
+};
+
+static int open_session(struct udevice *dev, u32 *session)
+{
+	struct tee_open_session_arg arg;
+	int rc;
+
+	memset(&arg, 0, sizeof(arg));
+	rc = tee_open_session(dev, &arg, 0, NULL);
+	if (rc)
+		return rc;
+	if (arg.ret)
+		return -EIO;
+	*session = arg.session;
+
+	return 0;
+}
+
+static int invoke_func(struct udevice *dev, u32 session, u32 func)
+{
+	struct tee_invoke_arg arg = { .session = session, .func = func };
+
+	return tee_invoke_func(dev, &arg, 0, NULL);
+}
+
+static int match(struct tee_version_data *vers, const void *data)
+{
+	return !vers->gen_caps;
+}
+
+static int dm_test_tee(struct unit_test_state *uts)
+{
+	struct tee_version_data vers;
+	struct udevice *dev;
+	struct sandbox_tee_state *state;
+	u32 session;
+	int rc;
+	u8 data[128];
+	struct tee_shm *reg_shm;
+	struct tee_shm *alloc_shm;
+
+	dev = tee_find_device(NULL, match, NULL, &vers);
+	ut_assert(dev);
+	state = dev_get_priv(dev);
+	ut_assert(!state->session);
+
+	rc = open_session(dev, &session);
+	ut_assert(!rc);
+	ut_assert(session == state->session);
+
+	rc = invoke_func(dev, session, 1);
+	ut_assert(!rc);
+
+	rc = tee_close_session(dev, session);
+	ut_assert(!rc);
+	ut_assert(!state->session);
+
+	ut_assert(!state->num_shms);
+	reg_shm = tee_shm_register(dev, data, sizeof(data), 0);
+	ut_assert(reg_shm);
+	ut_assert(state->num_shms == 1);
+
+	alloc_shm = tee_shm_alloc(dev, 256, 0);
+	ut_assert(alloc_shm);
+	ut_assert(state->num_shms == 2);
+
+	ut_assert(tee_shm_is_registered(reg_shm, dev));
+	ut_assert(tee_shm_is_registered(alloc_shm, dev));
+
+	tee_shm_free(reg_shm);
+	tee_shm_free(alloc_shm);
+	ut_assert(!state->num_shms);
+
+	return 0;
+}
+
+DM_TEST(dm_test_tee, DM_TESTF_SCAN_FDT);
-- 
2.17.1