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/*
* This file is part of the flashrom project.
*
* Copyright 2021 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "lifecycle.h"
#if CONFIG_LINUX_SPI == 1
static int linux_spi_ioctl(void *state, int fd, unsigned long request, va_list args) {
if (request == SPI_IOC_MESSAGE(2)) { /* ioctl code for read request */
struct spi_ioc_transfer* msg = va_arg(args, struct spi_ioc_transfer*);
/* First message has write array and write count */
unsigned int writecnt = msg[0].len;
unsigned char *writearr = (unsigned char *)(uintptr_t)msg[0].tx_buf;
/* Second message has read array and read count */
unsigned int readcnt = msg[1].len;
/* Detect probing */
if (writecnt == 1 && writearr[0] == JEDEC_RDID && readcnt == 3) {
/* We need to populate read array. */
unsigned char *readarr = (unsigned char *)(uintptr_t)msg[1].rx_buf;
readarr[0] = 0xEF; /* WINBOND_NEX_ID */
readarr[1] = 0x40; /* WINBOND_NEX_W25Q128_V left byte */
readarr[2] = 0x18; /* WINBOND_NEX_W25Q128_V right byte */
}
}
return 0;
}
static char *linux_spi_fgets(void *state, char *buf, int len, FILE *fp)
{
/* Emulate reading max buffer size from sysfs. */
const char *max_buf_size = "1048576";
return memcpy(buf, max_buf_size, min(len, strlen(max_buf_size) + 1));
}
void linux_spi_probe_lifecycle_test_success(void **state)
{
/*
* Current implementation tests a particular path of the init procedure.
* Specifically, it is reading the buffer size from sysfs.
*/
struct io_mock_fallback_open_state linux_spi_fallback_open_state = {
.noc = 0,
.paths = { "/dev/null", NULL },
.flags = { O_RDWR },
};
const struct io_mock linux_spi_io = {
.iom_fgets = linux_spi_fgets,
.iom_ioctl = linux_spi_ioctl,
.fallback_open_state = &linux_spi_fallback_open_state,
};
const char *expected_matched_names[1] = {"W25Q128.V"};
run_probe_v2_lifecycle(state, &linux_spi_io, &programmer_linux_spi, "dev=/dev/null", "W25Q128.V",
expected_matched_names, 1);
}
#else
SKIP_TEST(linux_spi_probe_lifecycle_test_success)
#endif /* CONFIG_LINUX_SPI */
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