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![Igor Opaniuk](/assets/img/avatar_default.png)
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>
221 lines
5.0 KiB
C
221 lines
5.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Linaro Limited
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*/
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <dm/test.h>
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#include <sandboxtee.h>
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#include <tee.h>
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#include <test/test.h>
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#include <test/ut.h>
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#include <tee/optee_ta_avb.h>
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#include <tee/optee_ta_rpc_test.h>
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static int open_session(struct udevice *dev, u32 *session,
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struct tee_optee_ta_uuid *uuid)
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{
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struct tee_open_session_arg arg;
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int rc;
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memset(&arg, 0, sizeof(arg));
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tee_optee_ta_uuid_to_octets(arg.uuid, uuid);
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rc = tee_open_session(dev, &arg, 0, NULL);
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if (rc)
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return rc;
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if (arg.ret)
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return -EIO;
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*session = arg.session;
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return 0;
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}
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static int invoke_func_avb(struct udevice *dev, u32 session)
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{
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struct tee_param param = { .attr = TEE_PARAM_ATTR_TYPE_VALUE_OUTPUT };
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struct tee_invoke_arg arg;
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memset(&arg, 0, sizeof(arg));
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arg.session = session;
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arg.func = TA_AVB_CMD_READ_LOCK_STATE;
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if (tee_invoke_func(dev, &arg, 1, ¶m) || arg.ret)
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return -1;
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return 0;
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}
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static int invoke_func_rpc_test(struct udevice *dev, u32 session,
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u64 op, u64 busnum, u64 chip_addr,
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u64 xfer_flags, u8 *buf, size_t buf_size)
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{
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struct tee_param param[2];
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struct tee_invoke_arg arg;
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struct tee_shm *shm_buf;
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int rc;
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memset(&arg, 0, sizeof(arg));
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arg.session = session;
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arg.func = op;
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rc = tee_shm_alloc(dev, buf_size,
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TEE_SHM_ALLOC, &shm_buf);
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if (rc)
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return rc;
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if (op == TA_RPC_TEST_CMD_I2C_WRITE)
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memcpy(shm_buf->addr, buf, buf_size);
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memset(param, 0, sizeof(param));
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param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT;
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param[0].u.value.a = busnum;
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param[0].u.value.b = chip_addr;
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param[0].u.value.c = xfer_flags;
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param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INOUT;
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param[1].u.memref.shm = shm_buf;
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param[1].u.memref.size = buf_size;
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if (tee_invoke_func(dev, &arg, 2, param) || arg.ret) {
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rc = -1;
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goto out;
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}
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if (op == TA_RPC_TEST_CMD_I2C_READ)
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memcpy(buf, shm_buf->addr, buf_size);
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out:
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tee_shm_free(shm_buf);
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return rc;
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}
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static int match(struct tee_version_data *vers, const void *data)
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{
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return vers->gen_caps & TEE_GEN_CAP_GP;
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}
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struct test_tee_vars {
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struct tee_shm *reg_shm;
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struct tee_shm *alloc_shm;
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};
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static int test_tee(struct unit_test_state *uts, struct test_tee_vars *vars)
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{
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struct tee_version_data vers;
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struct udevice *dev;
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struct sandbox_tee_state *state;
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struct tee_optee_ta_uuid avb_uuid = TA_AVB_UUID;
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u32 session = 0;
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int rc;
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u8 data[128];
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dev = tee_find_device(NULL, match, NULL, &vers);
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ut_assert(dev);
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state = dev_get_priv(dev);
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ut_assert(!state->session);
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rc = open_session(dev, &session, &avb_uuid);
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ut_assert(!rc);
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ut_assert(session == state->session);
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rc = invoke_func_avb(dev, session);
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ut_assert(!rc);
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rc = tee_close_session(dev, session);
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ut_assert(!rc);
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ut_assert(!state->session);
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ut_assert(!state->num_shms);
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rc = tee_shm_register(dev, data, sizeof(data), 0, &vars->reg_shm);
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ut_assert(!rc);
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ut_assert(state->num_shms == 1);
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rc = tee_shm_alloc(dev, 256, 0, &vars->alloc_shm);
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ut_assert(!rc);
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ut_assert(state->num_shms == 2);
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ut_assert(tee_shm_is_registered(vars->reg_shm, dev));
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ut_assert(tee_shm_is_registered(vars->alloc_shm, dev));
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tee_shm_free(vars->reg_shm);
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vars->reg_shm = NULL;
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tee_shm_free(vars->alloc_shm);
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vars->alloc_shm = NULL;
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ut_assert(!state->num_shms);
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return rc;
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}
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#define I2C_BUF_SIZE 64
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static int test_tee_rpc(struct unit_test_state *uts)
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{
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struct tee_version_data vers;
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struct udevice *dev;
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struct sandbox_tee_state *state;
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struct tee_optee_ta_uuid rpc_test_uuid = TA_RPC_TEST_UUID;
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u32 session = 0;
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int rc;
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char *test_str = "Test string";
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u8 data[I2C_BUF_SIZE] = {0};
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u8 data_from_eeprom[I2C_BUF_SIZE] = {0};
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/* Use sandbox I2C EEPROM emulation; bus: 0, chip: 0x2c */
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u64 bus = 0;
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u64 chip = 0x2c;
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u64 xfer_flags = 0;
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dev = tee_find_device(NULL, match, NULL, &vers);
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ut_assert(dev);
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state = dev_get_priv(dev);
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ut_assert(!state->session);
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/* Test RPC call asking for I2C service */
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rc = open_session(dev, &session, &rpc_test_uuid);
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ut_assert(!rc);
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ut_assert(session == state->session);
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/* Write buffer */
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strncpy((char *)data, test_str, strlen(test_str));
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rc = invoke_func_rpc_test(dev, session, TA_RPC_TEST_CMD_I2C_WRITE,
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bus, chip, xfer_flags, data, sizeof(data));
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ut_assert(!rc);
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/* Read buffer */
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rc = invoke_func_rpc_test(dev, session, TA_RPC_TEST_CMD_I2C_READ,
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bus, chip, xfer_flags, data_from_eeprom,
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sizeof(data_from_eeprom));
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ut_assert(!rc);
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/* Compare */
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ut_assert(!memcmp(data, data_from_eeprom, sizeof(data)));
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rc = tee_close_session(dev, session);
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ut_assert(!rc);
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ut_assert(!state->session);
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return rc;
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}
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static int dm_test_tee(struct unit_test_state *uts)
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{
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struct test_tee_vars vars = { NULL, NULL };
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int rc = test_tee(uts, &vars);
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if (rc)
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goto out;
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if (IS_ENABLED(CONFIG_OPTEE_TA_RPC_TEST))
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rc = test_tee_rpc(uts);
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out:
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/* In case test_tee() asserts these may still remain allocated */
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tee_shm_free(vars.reg_shm);
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tee_shm_free(vars.alloc_shm);
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return rc;
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}
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DM_TEST(dm_test_tee, UT_TESTF_SCAN_FDT);
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