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/* Copyright 2022 The ChromiumOS Authors.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <zephyr/drivers/emul.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/gpio/gpio_emul.h>
#include <zephyr/zephyr.h>
#include <zephyr/ztest.h>
#include "ec_commands.h"
#include "emul/emul_flash.h"
#include "flash.h"
#include "host_command.h"
#include "test/drivers/test_state.h"
#define WP_L_GPIO_PATH DT_PATH(named_gpios, wp_l)
static int gpio_wp_l_set(int value)
{
const struct device *wp_l_gpio_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(WP_L_GPIO_PATH, gpios));
return gpio_emul_input_set(wp_l_gpio_dev,
DT_GPIO_PIN(WP_L_GPIO_PATH, gpios), value);
}
ZTEST_USER(flash, test_hostcmd_flash_protect_wp_asserted)
{
struct ec_response_flash_protect response;
struct ec_params_flash_protect params = {
.mask = 0,
.flags = 0,
};
struct host_cmd_handler_args args =
BUILD_HOST_COMMAND(EC_CMD_FLASH_PROTECT, 0, response, params);
/* The original flags not 0 as GPIO WP_L asserted */
uint32_t expected_flags = EC_FLASH_PROTECT_GPIO_ASSERTED;
/* Get the flash protect */
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Enable RO_AT_BOOT */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = EC_FLASH_PROTECT_RO_AT_BOOT;
expected_flags |= EC_FLASH_PROTECT_RO_AT_BOOT | EC_FLASH_PROTECT_RO_NOW;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Disable RO_AT_BOOT; should change nothing as GPIO WP_L is asserted */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = 0;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Enable ALL_NOW */
params.mask = EC_FLASH_PROTECT_ALL_NOW;
params.flags = EC_FLASH_PROTECT_ALL_NOW;
expected_flags |= EC_FLASH_PROTECT_ALL_NOW;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Disable ALL_NOW; should change nothing as GPIO WP_L is asserted */
params.mask = EC_FLASH_PROTECT_ALL_NOW;
params.flags = 0;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Disable RO_AT_BOOT; should change nothing as GPIO WP_L is asserted */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = 0;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
}
ZTEST_USER(flash, test_hostcmd_flash_protect_wp_deasserted)
{
struct ec_response_flash_protect response;
struct ec_params_flash_protect params = {
.mask = 0,
.flags = 0,
};
struct host_cmd_handler_args args =
BUILD_HOST_COMMAND(EC_CMD_FLASH_PROTECT, 0, response, params);
/* The original flags 0 as GPIO WP_L deasserted */
uint32_t expected_flags = 0;
zassert_ok(gpio_wp_l_set(1), NULL);
/* Get the flash protect */
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Enable RO_AT_BOOT */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = EC_FLASH_PROTECT_RO_AT_BOOT;
expected_flags |= EC_FLASH_PROTECT_RO_AT_BOOT | EC_FLASH_PROTECT_RO_NOW;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Disable RO_AT_BOOT */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = 0;
expected_flags &=
~(EC_FLASH_PROTECT_RO_AT_BOOT | EC_FLASH_PROTECT_RO_NOW);
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Enable RO_AT_BOOT */
params.mask = EC_FLASH_PROTECT_RO_AT_BOOT;
params.flags = EC_FLASH_PROTECT_RO_AT_BOOT;
expected_flags |= EC_FLASH_PROTECT_RO_AT_BOOT | EC_FLASH_PROTECT_RO_NOW;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
/* Enable ALL_NOW; should change nothing as GPIO WP_L is deasserted */
params.mask = EC_FLASH_PROTECT_ALL_NOW;
params.flags = EC_FLASH_PROTECT_ALL_NOW;
zassert_ok(host_command_process(&args), NULL);
zassert_equal(response.flags, expected_flags, "response.flags = %d",
response.flags);
}
#define TEST_BUF_SIZE 0x100
ZTEST_USER(flash, test_hostcmd_flash_write_and_erase)
{
uint8_t in_buf[TEST_BUF_SIZE];
uint8_t out_buf[sizeof(struct ec_params_flash_write) + TEST_BUF_SIZE];
struct ec_params_flash_read read_params = {
.offset = 0x10000,
.size = TEST_BUF_SIZE,
};
struct host_cmd_handler_args read_args =
BUILD_HOST_COMMAND(EC_CMD_FLASH_READ, 0, in_buf, read_params);
struct ec_params_flash_erase erase_params = {
.offset = 0x10000,
.size = 0x10000,
};
struct host_cmd_handler_args erase_args =
BUILD_HOST_COMMAND_PARAMS(EC_CMD_FLASH_ERASE, 0, erase_params);
/* The write host command structs need to be filled run-time */
struct ec_params_flash_write *write_params =
(struct ec_params_flash_write *)out_buf;
struct host_cmd_handler_args write_args =
BUILD_HOST_COMMAND_SIMPLE(EC_CMD_FLASH_WRITE, 0);
write_params->offset = 0x10000;
write_params->size = TEST_BUF_SIZE;
write_args.params = write_params;
write_args.params_size = sizeof(*write_params) + TEST_BUF_SIZE;
/* Flash write to all 0xec */
memset(write_params + 1, 0xec, TEST_BUF_SIZE);
zassert_ok(host_command_process(&write_args), NULL);
/* Flash read and compare the readback data */
zassert_ok(host_command_process(&read_args), NULL);
zassert_equal(read_args.response_size, TEST_BUF_SIZE, NULL);
zassert_equal(in_buf[0], 0xec, "readback data not expected: 0x%x",
in_buf[0]);
zassert_equal(in_buf[TEST_BUF_SIZE - 1], 0xec,
"readback data not expected: 0x%x", in_buf[0]);
/* Flash erase */
zassert_ok(host_command_process(&erase_args), NULL);
/* Flash read and compare the readback data */
zassert_ok(host_command_process(&read_args), NULL);
zassert_equal(in_buf[0], 0xff, "readback data not expected: 0x%x",
in_buf[0]);
zassert_equal(in_buf[TEST_BUF_SIZE - 1], 0xff,
"readback data not expected: 0x%x", in_buf[0]);
}
static void flash_reset(void)
{
/* Set the GPIO WP_L to default */
gpio_wp_l_set(0);
/* Reset the protection flags */
cros_flash_emul_protect_reset();
}
static void flash_before(void *data)
{
ARG_UNUSED(data);
flash_reset();
}
static void flash_after(void *data)
{
ARG_UNUSED(data);
flash_reset();
/* The test modifies this bank. Erase it in case of failure. */
crec_flash_erase(0x10000, 0x10000);
}
ZTEST_SUITE(flash, drivers_predicate_post_main, NULL, flash_before, flash_after,
NULL);
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