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test: dm: tee: extend with RPC test

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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>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
This commit is contained in:
Igor Opaniuk 2021-01-25 14:28:43 +02:00 committed by Tom Rini
parent 592b98bb9a
commit 9d1215be92
1 changed files with 109 additions and 7 deletions
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116
test/dm/tee.c
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@ -13,15 +13,16 @@
#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));
tee_optee_ta_uuid_to_octets(arg.uuid, &uuid);
tee_optee_ta_uuid_to_octets(arg.uuid, uuid);
rc = tee_open_session(dev, &arg, 0, NULL);
if (rc)
return rc;
@ -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 +48,48 @@ 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,
u64 xfer_flags, 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[0].u.value.c = xfer_flags;
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) {
rc = -1;
goto out;
}
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 +105,7 @@ 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 +115,11 @@ 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);
@ -100,7 +144,59 @@ static int test_tee(struct unit_test_state *uts, struct test_tee_vars *vars)
vars->alloc_shm = NULL;
ut_assert(!state->num_shms);
return 0;
return rc;
}
#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;
u64 xfer_flags = 0;
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 service */
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, xfer_flags, data, sizeof(data));
ut_assert(!rc);
/* Read buffer */
rc = invoke_func_rpc_test(dev, session, TA_RPC_TEST_CMD_I2C_READ,
bus, chip, xfer_flags, 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 rc;
}
static int dm_test_tee(struct unit_test_state *uts)
@ -108,6 +204,12 @@ static int dm_test_tee(struct unit_test_state *uts)
struct test_tee_vars vars = { NULL, NULL };
int rc = test_tee(uts, &vars);
if (rc)
goto out;
if (IS_ENABLED(CONFIG_OPTEE_TA_RPC_TEST))
rc = test_tee_rpc(uts);
out:
/* In case test_tee() asserts these may still remain allocated */
tee_shm_free(vars.reg_shm);
tee_shm_free(vars.alloc_shm);