From: Igor Opaniuk igor.opaniuk@foundries.io
Extend existing DM tee tests adding test coverage for reverse RPC calls. Currently this commit only adds tests for I2C requests from TEE driver to TEE supplicant, for instance reading/writing data to emulated i2c eeprom defines in standard sandbox test device tree (arch/sandbox/dts/test.dtb):
=> i2c bus Bus 0: i2c@0 (active 0) 2c: eeprom@2c, offset len 1, flags 0 ...
Running TEE tests: => ut dm tee Test: dm_test_tee: tee.c Test: dm_test_tee: tee.c (flat tree) Failures: 0
Signed-off-by: Igor Opaniuk igor.opaniuk@foundries.io Reviewed-by: Simon Glass sjg@chromium.org
Series-to: u-boot Series-version: 1 --- test/dm/tee.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 102 insertions(+), 5 deletions(-)
diff --git a/test/dm/tee.c b/test/dm/tee.c index ddbdcfb0cf..51ffb4e4a9 100644 --- a/test/dm/tee.c +++ b/test/dm/tee.c @@ -13,11 +13,12 @@ #include <test/test.h> #include <test/ut.h> #include <tee/optee_ta_avb.h> +#include <tee/optee_ta_rpc_test.h>
-static int open_session(struct udevice *dev, u32 *session) +static int open_session(struct udevice *dev, u32 *session, + struct tee_optee_ta_uuid uuid) { struct tee_open_session_arg arg; - const struct tee_optee_ta_uuid uuid = TA_AVB_UUID; int rc;
memset(&arg, 0, sizeof(arg)); @@ -32,7 +33,7 @@ static int open_session(struct udevice *dev, u32 *session) return 0; }
-static int invoke_func(struct udevice *dev, u32 session) +static int invoke_func_avb(struct udevice *dev, u32 session) { struct tee_param param = { .attr = TEE_PARAM_ATTR_TYPE_VALUE_OUTPUT }; struct tee_invoke_arg arg; @@ -47,6 +48,47 @@ static int invoke_func(struct udevice *dev, u32 session) return 0; }
+static int invoke_func_rpc_test(struct udevice *dev, u32 session, + u64 op, u64 busnum, u64 chip_addr, + u8 *buf, size_t buf_size) +{ + struct tee_param param[2]; + struct tee_invoke_arg arg; + struct tee_shm *shm_buf; + int rc; + + memset(&arg, 0, sizeof(arg)); + arg.session = session; + arg.func = op; + + rc = tee_shm_alloc(dev, buf_size, + TEE_SHM_ALLOC, &shm_buf); + if (rc) + return rc; + + if (op == TA_RPC_TEST_CMD_I2C_WRITE) + memcpy(shm_buf->addr, buf, buf_size); + + memset(param, 0, sizeof(param)); + param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT; + param[0].u.value.a = busnum; + param[0].u.value.b = chip_addr; + param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INOUT; + param[1].u.memref.shm = shm_buf; + param[1].u.memref.size = buf_size; + + if (tee_invoke_func(dev, &arg, 2, param) || arg.ret) { + goto out; + rc = -1; + } + + if (op == TA_RPC_TEST_CMD_I2C_READ) + memcpy(buf, shm_buf->addr, buf_size); +out: + tee_shm_free(shm_buf); + return rc; +} + static int match(struct tee_version_data *vers, const void *data) { return vers->gen_caps & TEE_GEN_CAP_GP; @@ -62,6 +104,7 @@ static int test_tee(struct unit_test_state *uts, struct test_tee_vars *vars) struct tee_version_data vers; struct udevice *dev; struct sandbox_tee_state *state; + struct tee_optee_ta_uuid avb_uuid = TA_AVB_UUID; u32 session = 0; int rc; u8 data[128]; @@ -71,11 +114,11 @@ static int test_tee(struct unit_test_state *uts, struct test_tee_vars *vars) state = dev_get_priv(dev); ut_assert(!state->session);
- rc = open_session(dev, &session); + rc = open_session(dev, &session, avb_uuid); ut_assert(!rc); ut_assert(session == state->session);
- rc = invoke_func(dev, session); + rc = invoke_func_avb(dev, session); ut_assert(!rc);
rc = tee_close_session(dev, session); @@ -103,11 +146,65 @@ static int test_tee(struct unit_test_state *uts, struct test_tee_vars *vars) return 0; }
+#define I2C_BUF_SIZE 64 + +static int test_tee_rpc(struct unit_test_state *uts) +{ + struct tee_version_data vers; + struct udevice *dev; + struct sandbox_tee_state *state; + struct tee_optee_ta_uuid rpc_test_uuid = TA_RPC_TEST_UUID; + u32 session = 0; + int rc; + + char *test_str = "Test string"; + u8 data[I2C_BUF_SIZE] = {0}; + u8 data_from_eeprom[I2C_BUF_SIZE] = {0}; + + /* Use sandbox I2C EEPROM emulation; bus: 0, chip: 0x2c */ + u64 bus = 0; + u64 chip = 0x2c; + + dev = tee_find_device(NULL, match, NULL, &vers); + ut_assert(dev); + state = dev_get_priv(dev); + ut_assert(!state->session); + + /* Test RPC call asking for I2C sevice */ + rc = open_session(dev, &session, rpc_test_uuid); + ut_assert(!rc); + ut_assert(session == state->session); + + /* Write buffer */ + strncpy((char *)data, test_str, strlen(test_str)); + rc = invoke_func_rpc_test(dev, session, TA_RPC_TEST_CMD_I2C_WRITE, + bus, chip, data, sizeof(data)); + ut_assert(!rc); + + /* Read buffer */ + rc = invoke_func_rpc_test(dev, session, TA_RPC_TEST_CMD_I2C_READ, + bus, chip, data_from_eeprom, + sizeof(data_from_eeprom)); + ut_assert(!rc); + + /* Compare */ + ut_assert(!memcmp(data, data_from_eeprom, sizeof(data))); + + rc = tee_close_session(dev, session); + ut_assert(!rc); + ut_assert(!state->session); + + return 0; +} + static int dm_test_tee(struct unit_test_state *uts) { struct test_tee_vars vars = { NULL, NULL }; int rc = test_tee(uts, &vars);
+ if (IS_ENABLED(CONFIG_OPTEE_TA_RPC_TEST)) + rc = test_tee_rpc(uts); + /* In case test_tee() asserts these may still remain allocated */ tee_shm_free(vars.reg_shm); tee_shm_free(vars.alloc_shm);