+// SPDX-License-Identifier: GPL-2.0-or-later
+
/***************************************************************************
* Copyright (C) 2017 by Grzegorz Kostka, kostka.grzegorz@gmail.com *
* *
* Based on bcm2835gpio.c *
- * *
- * 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; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * 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. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#endif
#include <jtag/interface.h>
+#include <transport/transport.h>
#include "bitbang.h"
#include <sys/mman.h>
static bb_value_t imx_gpio_read(void);
static int imx_gpio_write(int tck, int tms, int tdi);
-static int imx_gpio_reset(int trst, int srst);
static int imx_gpio_swdio_read(void);
static void imx_gpio_swdio_drive(bool is_output);
+static int imx_gpio_swd_write(int swclk, int swdio);
static int imx_gpio_init(void);
static int imx_gpio_quit(void);
static struct bitbang_interface imx_gpio_bitbang = {
.read = imx_gpio_read,
.write = imx_gpio_write,
- .reset = imx_gpio_reset,
.swdio_read = imx_gpio_swdio_read,
.swdio_drive = imx_gpio_swdio_drive,
+ .swd_write = imx_gpio_swd_write,
.blink = NULL
};
return ERROR_OK;
}
-static int imx_gpio_swd_write(int tck, int tms, int tdi)
+static int imx_gpio_swd_write(int swclk, int swdio)
{
- tdi ? gpio_set(swdio_gpio) : gpio_clear(swdio_gpio);
- tck ? gpio_set(swclk_gpio) : gpio_clear(swclk_gpio);
+ swdio ? gpio_set(swdio_gpio) : gpio_clear(swdio_gpio);
+ swclk ? gpio_set(swclk_gpio) : gpio_clear(swclk_gpio);
for (unsigned int i = 0; i < jtag_delay; i++)
asm volatile ("");
static const char * const imx_gpio_transports[] = { "jtag", "swd", NULL };
-struct jtag_interface imx_gpio_interface = {
- .name = "imx_gpio",
+static struct jtag_interface imx_gpio_interface = {
.supported = DEBUG_CAP_TMS_SEQ,
.execute_queue = bitbang_execute_queue,
+};
+
+struct adapter_driver imx_gpio_adapter_driver = {
+ .name = "imx_gpio",
.transports = imx_gpio_transports,
- .swd = &bitbang_swd,
- .speed = imx_gpio_speed,
- .khz = imx_gpio_khz,
- .speed_div = imx_gpio_speed_div,
.commands = imx_gpio_command_handlers,
+
.init = imx_gpio_init,
.quit = imx_gpio_quit,
+ .reset = imx_gpio_reset,
+ .speed = imx_gpio_speed,
+ .khz = imx_gpio_khz,
+ .speed_div = imx_gpio_speed_div,
+
+ .jtag_ops = &imx_gpio_interface,
+ .swd_ops = &bitbang_swd,
};
static bool imx_gpio_jtag_mode_possible(void)
LOG_INFO("imx_gpio GPIO JTAG/SWD bitbang driver");
- if (imx_gpio_jtag_mode_possible()) {
- if (imx_gpio_swd_mode_possible())
- LOG_INFO("JTAG and SWD modes enabled");
- else
- LOG_INFO("JTAG only mode enabled (specify swclk and swdio gpio to add SWD mode)");
- } else if (imx_gpio_swd_mode_possible()) {
- LOG_INFO("SWD only mode enabled (specify tck, tms, tdi and tdo gpios to add JTAG mode)");
- } else {
- LOG_ERROR("Require tck, tms, tdi and tdo gpios for JTAG mode and/or swclk and swdio gpio for SWD mode");
+ if (transport_is_jtag() && !imx_gpio_jtag_mode_possible()) {
+ LOG_ERROR("Require tck, tms, tdi and tdo gpios for JTAG mode");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ if (transport_is_swd() && !imx_gpio_swd_mode_possible()) {
+ LOG_ERROR("Require swclk and swdio gpio for SWD mode");
return ERROR_JTAG_INIT_FAILED;
}
dev_mem_fd = open("/dev/mem", O_RDWR | O_SYNC);
if (dev_mem_fd < 0) {
- perror("open");
+ LOG_ERROR("open: %s", strerror(errno));
return ERROR_JTAG_INIT_FAILED;
}
-
LOG_INFO("imx_gpio mmap: pagesize: %u, regionsize: %u",
(unsigned int) sysconf(_SC_PAGE_SIZE), IMX_GPIO_REGS_COUNT * IMX_GPIO_SIZE);
pio_base = mmap(NULL, IMX_GPIO_REGS_COUNT * IMX_GPIO_SIZE,
MAP_SHARED, dev_mem_fd, imx_gpio_peri_base);
if (pio_base == MAP_FAILED) {
- perror("mmap");
+ LOG_ERROR("mmap: %s", strerror(errno));
close(dev_mem_fd);
return ERROR_JTAG_INIT_FAILED;
}
* Configure TDO as an input, and TDI, TCK, TMS, TRST, SRST
* as outputs. Drive TDI and TCK low, and TMS/TRST/SRST high.
*/
- if (imx_gpio_jtag_mode_possible()) {
+ if (transport_is_jtag()) {
tdo_gpio_mode = gpio_mode_get(tdo_gpio);
tdi_gpio_mode = gpio_mode_get(tdi_gpio);
tck_gpio_mode = gpio_mode_get(tck_gpio);
gpio_mode_output_set(tdi_gpio);
gpio_mode_output_set(tck_gpio);
gpio_mode_output_set(tms_gpio);
+
+ if (trst_gpio != -1) {
+ trst_gpio_mode = gpio_mode_get(trst_gpio);
+ gpio_set(trst_gpio);
+ gpio_mode_output_set(trst_gpio);
+ }
}
- if (imx_gpio_swd_mode_possible()) {
+
+ if (transport_is_swd()) {
swclk_gpio_mode = gpio_mode_get(swclk_gpio);
swdio_gpio_mode = gpio_mode_get(swdio_gpio);
gpio_mode_output_set(swclk_gpio);
gpio_mode_output_set(swdio_gpio);
}
- if (trst_gpio != -1) {
- trst_gpio_mode = gpio_mode_get(trst_gpio);
- gpio_set(trst_gpio);
- gpio_mode_output_set(trst_gpio);
- }
+
if (srst_gpio != -1) {
srst_gpio_mode = gpio_mode_get(srst_gpio);
gpio_set(srst_gpio);
"tdo %d trst %d srst %d", tck_gpio_mode, tms_gpio_mode,
tdi_gpio_mode, tdo_gpio_mode, trst_gpio_mode, srst_gpio_mode);
- if (swd_mode) {
- imx_gpio_bitbang.write = imx_gpio_swd_write;
- bitbang_switch_to_swd();
- }
-
return ERROR_OK;
}
static int imx_gpio_quit(void)
{
- if (imx_gpio_jtag_mode_possible()) {
+ if (transport_is_jtag()) {
gpio_mode_set(tdo_gpio, tdo_gpio_mode);
gpio_mode_set(tdi_gpio, tdi_gpio_mode);
gpio_mode_set(tck_gpio, tck_gpio_mode);
gpio_mode_set(tms_gpio, tms_gpio_mode);
+
+ if (trst_gpio != -1)
+ gpio_mode_set(trst_gpio, trst_gpio_mode);
}
- if (imx_gpio_swd_mode_possible()) {
+
+ if (transport_is_swd()) {
gpio_mode_set(swclk_gpio, swclk_gpio_mode);
gpio_mode_set(swdio_gpio, swdio_gpio_mode);
}
- if (trst_gpio != -1)
- gpio_mode_set(trst_gpio, trst_gpio_mode);
+
if (srst_gpio != -1)
gpio_mode_set(srst_gpio, srst_gpio_mode);
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