659 lines
14 KiB
C
659 lines
14 KiB
C
/***************************************************************************
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* Copyright (C) 2011 by Mathias Kuester *
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* Mathias Kuester <kesmtp@freenet.de> *
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* *
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* This code is based on https://github.com/texane/stlink *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/* project specific includes */
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#include <helper/binarybuffer.h>
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#include <jtag/interface.h>
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#include <jtag/stlink/stlink_layout.h>
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#include <jtag/stlink/stlink_interface.h>
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#include <target/target.h>
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#include "libusb_common.h"
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#define ENDPOINT_IN 0x80
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#define ENDPOINT_OUT 0x00
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#define STLINK_RX_EP (1|ENDPOINT_IN)
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#define STLINK_TX_EP (2|ENDPOINT_OUT)
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#define STLINK_CMD_SIZE (16)
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#define STLINK_TX_SIZE (4*128)
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#define STLINK_RX_SIZE (4*128)
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/** */
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struct stlink_usb_handle_s {
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/** */
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struct jtag_libusb_device_handle *fd;
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/** */
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struct libusb_transfer *trans;
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/** */
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uint8_t txbuf[STLINK_TX_SIZE];
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/** */
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uint8_t rxbuf[STLINK_RX_SIZE];
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};
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#define STLINK_OK 0x80
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#define STLINK_FALSE 0x81
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#define STLINK_CORE_RUNNING 0x80
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#define STLINK_CORE_HALTED 0x81
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#define STLINK_CORE_STAT_UNKNOWN -1
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#define STLINK_GET_VERSION 0xf1
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#define STLINK_GET_CURRENT_MODE 0xf5
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#define STLINK_DEBUG_COMMAND 0xF2
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#define STLINK_DFU_COMMAND 0xF3
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#define STLINK_DFU_EXIT 0x07
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#define STLINK_DEV_DFU_MODE 0x00
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#define STLINK_DEV_MASS_MODE 0x01
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#define STLINK_DEV_DEBUG_MODE 0x02
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#define STLINK_DEV_UNKNOWN_MODE -1
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#define STLINK_DEBUG_ENTER 0x20
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#define STLINK_DEBUG_EXIT 0x21
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#define STLINK_DEBUG_READCOREID 0x22
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#define STLINK_DEBUG_GETSTATUS 0x01
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#define STLINK_DEBUG_FORCEDEBUG 0x02
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#define STLINK_DEBUG_RESETSYS 0x03
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#define STLINK_DEBUG_READALLREGS 0x04
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#define STLINK_DEBUG_READREG 0x05
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#define STLINK_DEBUG_WRITEREG 0x06
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#define STLINK_DEBUG_READMEM_32BIT 0x07
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#define STLINK_DEBUG_WRITEMEM_32BIT 0x08
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#define STLINK_DEBUG_RUNCORE 0x09
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#define STLINK_DEBUG_STEPCORE 0x0a
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#define STLINK_DEBUG_SETFP 0x0b
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#define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
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#define STLINK_DEBUG_CLEARFP 0x0e
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#define STLINK_DEBUG_WRITEDEBUGREG 0x0f
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#define STLINK_DEBUG_ENTER_SWD 0xa3
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#define STLINK_DEBUG_ENTER_JTAG 0x00
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#define STLINK_SWD_ENTER 0x30
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#define STLINK_SWD_READCOREID 0x32
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/** */
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int stlink_usb_recv(void *handle, uint8_t *txbuf, int txsize, uint8_t *rxbuf,
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int rxsize)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)txbuf, txsize,
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1000) != txsize) {
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return ERROR_FAIL;
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}
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if (rxsize && rxbuf) {
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if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
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rxsize, 1000) != rxsize) {
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return ERROR_FAIL;
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}
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}
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return ERROR_OK;
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}
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/** */
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void stlink_usb_init_buffer(void *handle)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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memset(h->txbuf, 0, STLINK_CMD_SIZE);
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}
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/** */
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int stlink_usb_version(void *handle)
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{
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int res;
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uint16_t v;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_GET_VERSION;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 6);
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if (res != ERROR_OK)
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return res;
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v = (h->rxbuf[0] << 8) | h->rxbuf[1];
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LOG_DEBUG("STLINK v%d", (v >> 12) & 0x0f);
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LOG_DEBUG("JTAG v%d", (v >> 6) & 0x3f);
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LOG_DEBUG("SWIM v%d", v & 0x3f);
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LOG_DEBUG("VID %04X", buf_get_u32(h->rxbuf, 16, 16));
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LOG_DEBUG("PID %04X", buf_get_u32(h->rxbuf, 32, 16));
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return ERROR_OK;
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}
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/** */
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int stlink_usb_current_mode(void *handle, uint8_t *mode)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_GET_CURRENT_MODE;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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*mode = h->rxbuf[0];
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return ERROR_OK;
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}
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/** */
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int stlink_usb_dfu_mode_leave(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DFU_COMMAND;
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h->txbuf[1] = STLINK_DFU_EXIT;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_swd_mode_enter(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_ENTER;
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h->txbuf[2] = STLINK_DEBUG_ENTER_SWD;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_debug_mode_leave(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_EXIT;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_init_mode(void *handle)
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{
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int res;
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uint8_t mode;
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assert(handle != NULL);
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res = stlink_usb_current_mode(handle, &mode);
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if (res != ERROR_OK)
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return res;
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LOG_DEBUG("MODE: %02X", mode);
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if (mode == STLINK_DEV_DFU_MODE) {
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res = stlink_usb_dfu_mode_leave(handle);
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if (res != ERROR_OK)
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return res;
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}
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res = stlink_usb_current_mode(handle, &mode);
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if (res != ERROR_OK)
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return res;
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LOG_DEBUG("MODE: %02X", mode);
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if (mode != STLINK_DEV_DEBUG_MODE) {
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res = stlink_usb_swd_mode_enter(handle);
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if (res != ERROR_OK)
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return res;
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}
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res = stlink_usb_current_mode(handle, &mode);
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if (res != ERROR_OK)
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return res;
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LOG_DEBUG("MODE: %02X", mode);
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return ERROR_OK;
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}
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/** */
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int stlink_usb_idcode(void *handle, uint32_t *idcode)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_READCOREID;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
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if (res != ERROR_OK)
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return res;
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*idcode = le_to_h_u32(h->rxbuf);
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LOG_DEBUG("IDCODE: %08X", *idcode);
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return ERROR_OK;
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}
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/** */
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enum target_state stlink_usb_state(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_GETSTATUS;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return TARGET_UNKNOWN;
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if (h->rxbuf[0] == STLINK_CORE_RUNNING)
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return TARGET_RUNNING;
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if (h->rxbuf[0] == STLINK_CORE_HALTED)
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return TARGET_HALTED;
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return TARGET_UNKNOWN;
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}
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/** */
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int stlink_usb_reset(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_RESETSYS;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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LOG_DEBUG("RESET: %08X", h->rxbuf[0]);
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return ERROR_OK;
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}
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/** */
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int stlink_usb_run(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_RUNCORE;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_halt(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_FORCEDEBUG;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_step(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_STEPCORE;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_read_regs(void *handle)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_READALLREGS;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_READREG;
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h->txbuf[2] = num;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
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if (res != ERROR_OK)
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return res;
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*val = le_to_h_u32(h->rxbuf);
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return ERROR_OK;
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}
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/** */
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int stlink_usb_write_reg(void *handle, int num, uint32_t val)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_WRITEREG;
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h->txbuf[2] = num;
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h_u32_to_le(h->txbuf + 3, val);
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
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uint32_t *buffer)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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len *= 4;
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_READMEM_32BIT;
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h_u32_to_le(h->txbuf + 2, addr);
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h_u16_to_le(h->txbuf + 2 + 4, len);
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, len);
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if (res != ERROR_OK)
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return res;
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memcpy(buffer, h->rxbuf, len);
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return ERROR_OK;
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}
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/** */
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int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
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uint32_t *buffer)
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{
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int res;
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struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
len *= 4;
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_WRITEMEM_32BIT;
|
|
h_u32_to_le(h->txbuf + 2, addr);
|
|
h_u16_to_le(h->txbuf + 2 + 4, len);
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
memcpy(buffer, h->rxbuf, len);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
int stlink_usb_open(struct stlink_interface_param_s *param, void **fd)
|
|
{
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
LOG_DEBUG("stlink_usb_open");
|
|
|
|
h = malloc(sizeof(struct stlink_usb_handle_s));
|
|
|
|
if (h == 0) {
|
|
LOG_DEBUG("stlink_open_usb: malloc failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
const uint16_t vids[] = { param->vid, 0 };
|
|
const uint16_t pids[] = { param->pid, 0 };
|
|
|
|
LOG_DEBUG("stlink_open_usb: vid: %04x pid: %04x", param->vid,
|
|
param->pid);
|
|
|
|
if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) {
|
|
LOG_DEBUG("stlink_open_usb: open failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
jtag_libusb_set_configuration(h->fd, 0);
|
|
|
|
if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) {
|
|
LOG_DEBUG("stlink_open_usb: claim failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
stlink_usb_init_mode(h);
|
|
|
|
stlink_usb_version(h);
|
|
|
|
*fd = h;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
struct stlink_layout_api_s stlink_layout_api = {
|
|
/** */
|
|
.open = stlink_usb_open,
|
|
/** */
|
|
.idcode = stlink_usb_idcode,
|
|
/** */
|
|
.state = stlink_usb_state,
|
|
/** */
|
|
.reset = stlink_usb_reset,
|
|
/** */
|
|
.run = stlink_usb_run,
|
|
/** */
|
|
.halt = stlink_usb_halt,
|
|
/** */
|
|
.step = stlink_usb_step,
|
|
/** */
|
|
.read_regs = stlink_usb_read_regs,
|
|
/** */
|
|
.read_reg = stlink_usb_read_reg,
|
|
/** */
|
|
.write_reg = stlink_usb_write_reg,
|
|
/** */
|
|
.read_mem32 = stlink_usb_read_mem32,
|
|
/** */
|
|
.write_mem32 = stlink_usb_write_mem32,
|
|
};
|