1711 lines
39 KiB
C
1711 lines
39 KiB
C
/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2007,2008 Øyvind Harboe *
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* oyvind.harboe@zylin.com *
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* *
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* Copyright (C) 2008 Rob Brown, Lou Deluxe *
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* rob@cobbleware.com, lou.openocd012@fixit.nospammail.net *
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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, see <http://www.gnu.org/licenses/>. *
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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 <jtag/interface.h>
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#include <jtag/commands.h>
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#include "rlink.h"
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#include "rlink_st7.h"
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#include "rlink_ep1_cmd.h"
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#include "rlink_dtc_cmd.h"
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#include "libusb_helper.h"
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/* This feature is made useless by running the DTC all the time. When automatic, the LED is on
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*whenever the DTC is running. Otherwise, USB messages are sent to turn it on and off. */
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#undef AUTOMATIC_BUSY_LED
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/* This feature may require derating the speed due to reduced hold time. */
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#undef USE_HARDWARE_SHIFTER_FOR_TMS
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#define INTERFACE_NAME "RLink"
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#define USB_IDVENDOR (0x138e)
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#define USB_IDPRODUCT (0x9000)
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#define USB_EP1OUT_ADDR (0x01)
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#define USB_EP1OUT_SIZE (16)
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#define USB_EP1IN_ADDR (USB_EP1OUT_ADDR | 0x80)
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#define USB_EP1IN_SIZE (USB_EP1OUT_SIZE)
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#define USB_EP2OUT_ADDR (0x02)
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#define USB_EP2OUT_SIZE (64)
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#define USB_EP2IN_ADDR (USB_EP2OUT_ADDR | 0x80)
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#define USB_EP2IN_SIZE (USB_EP2OUT_SIZE)
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#define USB_EP2BANK_SIZE (512)
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#define USB_TIMEOUT_MS (3 * 1000)
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#define DTC_STATUS_POLL_BYTE (ST7_USB_BUF_EP0OUT + 0xff)
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#define ST7_PD_NBUSY_LED ST7_PD0
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#define ST7_PD_NRUN_LED ST7_PD1
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/* low enables VPP at adapter header, high connects it to GND instead */
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#define ST7_PD_VPP_SEL ST7_PD6
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/* low: VPP = 12v, high: VPP <= 5v */
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#define ST7_PD_VPP_SHDN ST7_PD7
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/* These pins are connected together */
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#define ST7_PE_ADAPTER_SENSE_IN ST7_PE3
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#define ST7_PE_ADAPTER_SENSE_OUT ST7_PE4
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/* Symbolic mapping between port pins and numbered IO lines */
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#define ST7_PA_IO1 ST7_PA1
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#define ST7_PA_IO2 ST7_PA2
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#define ST7_PA_IO4 ST7_PA4
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#define ST7_PA_IO8 ST7_PA6
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#define ST7_PA_IO10 ST7_PA7
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#define ST7_PB_IO5 ST7_PB5
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#define ST7_PC_IO9 ST7_PC1
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#define ST7_PC_IO3 ST7_PC2
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#define ST7_PC_IO7 ST7_PC3
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#define ST7_PE_IO6 ST7_PE5
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/* Symbolic mapping between numbered IO lines and adapter signals */
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#define ST7_PA_RTCK ST7_PA_IO0
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#define ST7_PA_NTRST ST7_PA_IO1
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#define ST7_PC_TDI ST7_PC_IO3
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#define ST7_PA_DBGRQ ST7_PA_IO4
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#define ST7_PB_NSRST ST7_PB_IO5
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#define ST7_PE_TMS ST7_PE_IO6
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#define ST7_PC_TCK ST7_PC_IO7
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#define ST7_PC_TDO ST7_PC_IO9
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#define ST7_PA_DBGACK ST7_PA_IO10
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static libusb_device_handle *pHDev;
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/*
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* ep1 commands are up to USB_EP1OUT_SIZE bytes in length.
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* This function takes care of zeroing the unused bytes before sending the packet.
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* Any reply packet is not handled by this function.
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*/
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static int ep1_generic_commandl(libusb_device_handle *pHDev_param, size_t length, ...)
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{
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uint8_t usb_buffer[USB_EP1OUT_SIZE];
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uint8_t *usb_buffer_p;
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va_list ap;
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int usb_ret;
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int transferred;
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if (length > sizeof(usb_buffer))
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length = sizeof(usb_buffer);
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usb_buffer_p = usb_buffer;
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va_start(ap, length);
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while (length > 0) {
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*usb_buffer_p++ = va_arg(ap, int);
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length--;
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}
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memset(
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usb_buffer_p,
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0,
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sizeof(usb_buffer) - (usb_buffer_p - usb_buffer)
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);
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usb_ret = jtag_libusb_bulk_write(
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pHDev_param,
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USB_EP1OUT_ADDR,
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(char *)usb_buffer, sizeof(usb_buffer),
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USB_TIMEOUT_MS,
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&transferred
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);
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if (usb_ret != ERROR_OK)
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return usb_ret;
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return transferred;
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}
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#if 0
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static ssize_t ep1_memory_read(
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libusb_device_handle *pHDev_param, uint16_t addr,
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size_t length, uint8_t *buffer)
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{
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uint8_t usb_buffer[USB_EP1OUT_SIZE];
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int usb_ret;
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size_t remain;
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ssize_t count;
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int transferred;
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usb_buffer[0] = EP1_CMD_MEMORY_READ;
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memset(
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usb_buffer + 4,
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0,
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sizeof(usb_buffer) - 4
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);
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remain = length;
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count = 0;
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while (remain) {
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if (remain > sizeof(usb_buffer))
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length = sizeof(usb_buffer);
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else
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length = remain;
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usb_buffer[1] = addr >> 8;
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usb_buffer[2] = addr;
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usb_buffer[3] = length;
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usb_ret = jtag_libusb_bulk_write(
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pHDev_param, USB_EP1OUT_ADDR,
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(char *)usb_buffer, sizeof(usb_buffer),
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USB_TIMEOUT_MS,
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&transferred
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);
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if (usb_ret != ERROR_OK || transferred < (int)sizeof(usb_buffer))
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break;
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usb_ret = jtag_libusb_bulk_read(
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pHDev_param, USB_EP1IN_ADDR,
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(char *)buffer, length,
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USB_TIMEOUT_MS,
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&transferred
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);
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if (usb_ret != ERROR_OK || transferred < (int)length)
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break;
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addr += length;
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buffer += length;
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count += length;
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remain -= length;
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}
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return count;
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}
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#endif
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static ssize_t ep1_memory_write(libusb_device_handle *pHDev_param, uint16_t addr,
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size_t length, uint8_t const *buffer)
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{
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uint8_t usb_buffer[USB_EP1OUT_SIZE];
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int usb_ret;
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size_t remain;
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ssize_t count;
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usb_buffer[0] = EP1_CMD_MEMORY_WRITE;
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remain = length;
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count = 0;
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while (remain) {
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if (remain > (sizeof(usb_buffer) - 4))
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length = (sizeof(usb_buffer) - 4);
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else
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length = remain;
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usb_buffer[1] = addr >> 8;
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usb_buffer[2] = addr;
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usb_buffer[3] = length;
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memcpy(
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usb_buffer + 4,
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buffer,
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length
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);
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memset(
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usb_buffer + 4 + length,
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0,
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sizeof(usb_buffer) - 4 - length
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);
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int transferred;
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usb_ret = jtag_libusb_bulk_write(
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pHDev_param, USB_EP1OUT_ADDR,
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(char *)usb_buffer, sizeof(usb_buffer),
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USB_TIMEOUT_MS,
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&transferred
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);
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if (usb_ret != ERROR_OK || transferred < (int)sizeof(usb_buffer))
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break;
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addr += length;
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buffer += length;
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count += length;
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remain -= length;
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}
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return count;
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}
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#if 0
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static ssize_t ep1_memory_writel(libusb_device_handle *pHDev_param, uint16_t addr,
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size_t length, ...)
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{
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uint8_t buffer[USB_EP1OUT_SIZE - 4];
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uint8_t *buffer_p;
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va_list ap;
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size_t remain;
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if (length > sizeof(buffer))
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length = sizeof(buffer);
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remain = length;
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buffer_p = buffer;
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va_start(ap, length);
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while (remain > 0) {
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*buffer_p++ = va_arg(ap, int);
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remain--;
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}
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return ep1_memory_write(pHDev_param, addr, length, buffer);
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}
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#endif
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#define DTCLOAD_COMMENT (0)
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#define DTCLOAD_ENTRY (1)
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#define DTCLOAD_LOAD (2)
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#define DTCLOAD_RUN (3)
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#define DTCLOAD_LUT_START (4)
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#define DTCLOAD_LUT (5)
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#define DTC_LOAD_BUFFER ST7_USB_BUF_EP2UIDO
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/* This gets set by the DTC loader */
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static uint8_t dtc_entry_download;
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/* The buffer is specially formatted to represent a valid image to load into the DTC. */
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static int dtc_load_from_buffer(libusb_device_handle *pHDev_param, const uint8_t *buffer,
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size_t length)
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{
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struct header_s {
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uint8_t type;
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uint8_t length;
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};
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int usb_err;
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struct header_s *header;
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uint8_t lut_start = 0xc0;
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dtc_entry_download = 0;
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/* Stop the DTC before loading anything. */
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usb_err = ep1_generic_commandl(
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pHDev_param, 1,
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EP1_CMD_DTC_STOP
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);
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if (usb_err < 0)
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return usb_err;
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while (length) {
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if (length < sizeof(*header)) {
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LOG_ERROR("Malformed DTC image");
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exit(1);
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}
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header = (struct header_s *)buffer;
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buffer += sizeof(*header);
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length -= sizeof(*header);
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if (length < (size_t)header->length + 1) {
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LOG_ERROR("Malformed DTC image");
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exit(1);
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}
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switch (header->type) {
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case DTCLOAD_COMMENT:
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break;
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case DTCLOAD_ENTRY:
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/* store entry addresses somewhere */
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if (!strncmp("download", (char *)buffer + 1, 8))
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dtc_entry_download = buffer[0];
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break;
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case DTCLOAD_LOAD:
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/* Send the DTC program to ST7 RAM. */
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usb_err = ep1_memory_write(
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pHDev_param,
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DTC_LOAD_BUFFER,
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header->length + 1, buffer
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);
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if (usb_err < 0)
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return usb_err;
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/* Load it into the DTC. */
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usb_err = ep1_generic_commandl(
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pHDev_param, 3,
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EP1_CMD_DTC_LOAD,
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(DTC_LOAD_BUFFER >> 8),
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DTC_LOAD_BUFFER
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);
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if (usb_err < 0)
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return usb_err;
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break;
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case DTCLOAD_RUN:
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usb_err = ep1_generic_commandl(
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pHDev_param, 3,
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EP1_CMD_DTC_CALL,
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buffer[0],
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EP1_CMD_DTC_WAIT
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);
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if (usb_err < 0)
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return usb_err;
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break;
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case DTCLOAD_LUT_START:
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lut_start = buffer[0];
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break;
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case DTCLOAD_LUT:
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usb_err = ep1_memory_write(
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pHDev_param,
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ST7_USB_BUF_EP0OUT + lut_start,
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header->length + 1, buffer
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);
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if (usb_err < 0)
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return usb_err;
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break;
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default:
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LOG_ERROR("Invalid DTC image record type: 0x%02x", header->type);
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exit(1);
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break;
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}
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buffer += (header->length + 1);
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length -= (header->length + 1);
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}
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return 0;
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}
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/*
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* Start the DTC running in download mode (waiting for 512 byte command packets on ep2).
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*/
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static int dtc_start_download(void)
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{
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int usb_err;
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uint8_t ep2txr;
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int transferred;
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/* set up for download mode and make sure EP2 is set up to transmit */
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usb_err = ep1_generic_commandl(
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pHDev, 7,
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EP1_CMD_DTC_STOP,
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EP1_CMD_SET_UPLOAD,
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EP1_CMD_SET_DOWNLOAD,
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EP1_CMD_MEMORY_READ, /* read EP2TXR for its data toggle */
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ST7_EP2TXR >> 8,
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ST7_EP2TXR,
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1
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);
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if (usb_err < 0)
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return usb_err;
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/* read back ep2txr */
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usb_err = jtag_libusb_bulk_read(
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pHDev, USB_EP1IN_ADDR,
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(char *)&ep2txr, 1,
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USB_TIMEOUT_MS,
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&transferred
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);
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if (usb_err != ERROR_OK)
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return usb_err;
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usb_err = ep1_generic_commandl(
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pHDev, 13,
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EP1_CMD_MEMORY_WRITE, /* preinitialize poll byte */
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DTC_STATUS_POLL_BYTE >> 8,
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DTC_STATUS_POLL_BYTE,
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1,
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0x00,
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EP1_CMD_MEMORY_WRITE, /* set EP2IN to return data */
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ST7_EP2TXR >> 8,
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ST7_EP2TXR,
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1,
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(ep2txr & ST7_EP2TXR_DTOG_TX) | ST7_EP2TXR_STAT_VALID,
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EP1_CMD_DTC_CALL, /* start running the DTC */
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dtc_entry_download,
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EP1_CMD_DTC_GET_CACHED_STATUS
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);
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if (usb_err < 0)
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return usb_err;
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/* wait for completion */
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usb_err = jtag_libusb_bulk_read(
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pHDev, USB_EP1IN_ADDR,
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(char *)&ep2txr, 1,
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USB_TIMEOUT_MS,
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&transferred
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);
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return usb_err;
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}
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|
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static int dtc_run_download(
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libusb_device_handle *pHDev_param,
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uint8_t *command_buffer,
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int command_buffer_size,
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uint8_t *reply_buffer,
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int reply_buffer_size
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)
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{
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char dtc_status;
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int usb_err;
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int i;
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int transferred;
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|
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LOG_DEBUG("%d/%d", command_buffer_size, reply_buffer_size);
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usb_err = jtag_libusb_bulk_write(
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pHDev_param,
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USB_EP2OUT_ADDR,
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(char *)command_buffer, USB_EP2BANK_SIZE,
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USB_TIMEOUT_MS,
|
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&transferred
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);
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if (usb_err < 0)
|
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return usb_err;
|
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|
|
|
|
/* Wait for DTC to finish running command buffer */
|
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for (i = 50;; ) {
|
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usb_err = ep1_generic_commandl(
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pHDev_param, 4,
|
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|
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EP1_CMD_MEMORY_READ,
|
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DTC_STATUS_POLL_BYTE >> 8,
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DTC_STATUS_POLL_BYTE,
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1
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);
|
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if (usb_err < 0)
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return usb_err;
|
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|
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usb_err = jtag_libusb_bulk_read(
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pHDev_param,
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USB_EP1IN_ADDR,
|
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&dtc_status, 1,
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USB_TIMEOUT_MS,
|
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&transferred
|
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);
|
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if (usb_err < 0)
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return usb_err;
|
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|
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if (dtc_status & 0x01)
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break;
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|
|
if (!--i) {
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LOG_ERROR("too many retries waiting for DTC status");
|
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return LIBUSB_ERROR_TIMEOUT;
|
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}
|
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}
|
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|
|
|
|
if (reply_buffer && reply_buffer_size) {
|
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usb_err = jtag_libusb_bulk_read(
|
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pHDev_param,
|
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USB_EP2IN_ADDR,
|
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(char *)reply_buffer, reply_buffer_size,
|
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USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
|
|
if (usb_err != ERROR_OK || transferred < reply_buffer_size) {
|
|
LOG_ERROR("Read of endpoint 2 returned %d, expected %d",
|
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usb_err, reply_buffer_size
|
|
);
|
|
return usb_err;
|
|
}
|
|
}
|
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|
|
return usb_err;
|
|
}
|
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|
|
/*
|
|
* The dtc reply queue is a singly linked list that describes what to do
|
|
* with the reply packet that comes from the DTC. Only SCAN_IN and SCAN_IO generate
|
|
* these entries.
|
|
*/
|
|
|
|
struct dtc_reply_queue_entry {
|
|
struct dtc_reply_queue_entry *next;
|
|
struct jtag_command *cmd; /* the command that resulted in this entry */
|
|
|
|
struct {
|
|
uint8_t *buffer; /* the scan buffer */
|
|
int size; /* size of the scan buffer in bits */
|
|
int offset; /* how many bits were already done before this? */
|
|
int length; /* how many bits are processed in this operation? */
|
|
enum scan_type type; /* SCAN_IN/SCAN_OUT/SCAN_IO */
|
|
} scan;
|
|
};
|
|
|
|
|
|
/*
|
|
* The dtc_queue consists of a buffer of pending commands and a reply queue.
|
|
* rlink_scan and tap_state_run add to the command buffer and maybe to the reply queue.
|
|
*/
|
|
|
|
static struct {
|
|
struct dtc_reply_queue_entry *rq_head;
|
|
struct dtc_reply_queue_entry *rq_tail;
|
|
uint32_t cmd_index;
|
|
uint32_t reply_index;
|
|
uint8_t cmd_buffer[USB_EP2BANK_SIZE];
|
|
} dtc_queue;
|
|
|
|
/*
|
|
* The tap state queue is for accumulating TAP state changes without needlessly
|
|
* flushing the dtc_queue. When it fills or is run, it adds the accumulated bytes to
|
|
* the dtc_queue.
|
|
*/
|
|
|
|
static struct {
|
|
uint32_t length;
|
|
uint32_t buffer;
|
|
} tap_state_queue;
|
|
|
|
static int dtc_queue_init(void)
|
|
{
|
|
dtc_queue.rq_head = NULL;
|
|
dtc_queue.rq_tail = NULL;
|
|
dtc_queue.cmd_index = 0;
|
|
dtc_queue.reply_index = 0;
|
|
return 0;
|
|
}
|
|
|
|
static inline struct dtc_reply_queue_entry *dtc_queue_enqueue_reply(
|
|
enum scan_type type, uint8_t *buffer, int size, int offset,
|
|
int length, struct jtag_command *cmd)
|
|
{
|
|
struct dtc_reply_queue_entry *rq_entry;
|
|
|
|
rq_entry = malloc(sizeof(struct dtc_reply_queue_entry));
|
|
if (rq_entry != NULL) {
|
|
rq_entry->scan.type = type;
|
|
rq_entry->scan.buffer = buffer;
|
|
rq_entry->scan.size = size;
|
|
rq_entry->scan.offset = offset;
|
|
rq_entry->scan.length = length;
|
|
rq_entry->cmd = cmd;
|
|
rq_entry->next = NULL;
|
|
|
|
if (dtc_queue.rq_head == NULL)
|
|
dtc_queue.rq_head = rq_entry;
|
|
else
|
|
dtc_queue.rq_tail->next = rq_entry;
|
|
|
|
dtc_queue.rq_tail = rq_entry;
|
|
}
|
|
|
|
return rq_entry;
|
|
}
|
|
|
|
/*
|
|
* Running the queue means that any pending command buffer is run
|
|
* and any reply data dealt with. The command buffer is then cleared for subsequent processing.
|
|
* The queue is automatically run by append when it is necessary to get space for the append.
|
|
*/
|
|
|
|
static int dtc_queue_run(void)
|
|
{
|
|
struct dtc_reply_queue_entry *rq_p, *rq_next;
|
|
int retval;
|
|
int usb_err;
|
|
int bit_cnt;
|
|
int x;
|
|
uint8_t *dtc_p, *tdo_p;
|
|
uint8_t dtc_mask, tdo_mask;
|
|
uint8_t reply_buffer[USB_EP2IN_SIZE];
|
|
|
|
assert((dtc_queue.rq_head != 0) == (dtc_queue.reply_index > 0));
|
|
assert(dtc_queue.cmd_index < USB_EP2BANK_SIZE);
|
|
assert(dtc_queue.reply_index <= USB_EP2IN_SIZE);
|
|
|
|
retval = ERROR_OK;
|
|
|
|
if (dtc_queue.cmd_index < 1)
|
|
return retval;
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] = DTC_CMD_STOP;
|
|
|
|
usb_err = dtc_run_download(pHDev,
|
|
dtc_queue.cmd_buffer, dtc_queue.cmd_index,
|
|
reply_buffer, sizeof(reply_buffer)
|
|
);
|
|
if (usb_err < 0) {
|
|
LOG_ERROR("dtc_run_download: %s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
if (dtc_queue.rq_head != NULL) {
|
|
/* process the reply, which empties the reply queue and frees its entries */
|
|
dtc_p = reply_buffer;
|
|
|
|
/* The rigamarole with the masks and doing it bit-by-bit is due to the fact that the
|
|
*scan buffer is LSb-first and the DTC code is MSb-first for hardware reasons. It
|
|
*was that or craft a function to do the reversal, and that wouldn't work with
|
|
*bit-stuffing (supplying extra bits to use mostly byte operations), or any other
|
|
*scheme which would throw the byte alignment off. */
|
|
|
|
for (
|
|
rq_p = dtc_queue.rq_head;
|
|
rq_p != NULL;
|
|
rq_p = rq_next
|
|
) {
|
|
tdo_p = rq_p->scan.buffer + (rq_p->scan.offset / 8);
|
|
tdo_mask = 1 << (rq_p->scan.offset % 8);
|
|
|
|
|
|
bit_cnt = rq_p->scan.length;
|
|
if (bit_cnt >= 8) {
|
|
/* bytes */
|
|
|
|
dtc_mask = 1 << (8 - 1);
|
|
|
|
for (
|
|
;
|
|
bit_cnt;
|
|
bit_cnt--
|
|
) {
|
|
if (*dtc_p & dtc_mask)
|
|
*tdo_p |= tdo_mask;
|
|
else
|
|
*tdo_p &= ~tdo_mask;
|
|
|
|
dtc_mask >>= 1;
|
|
if (dtc_mask == 0) {
|
|
dtc_p++;
|
|
dtc_mask = 1 << (8 - 1);
|
|
}
|
|
|
|
tdo_mask <<= 1;
|
|
if (tdo_mask == 0) {
|
|
tdo_p++;
|
|
tdo_mask = 1;
|
|
}
|
|
}
|
|
} else {
|
|
/* extra bits or last bit */
|
|
|
|
x = *dtc_p++;
|
|
if ((rq_p->scan.type == SCAN_IN) && (
|
|
rq_p->scan.offset != rq_p->scan.size - 1
|
|
)) {
|
|
/* extra bits were sent as a full byte with padding on the
|
|
*end */
|
|
dtc_mask = 1 << (8 - 1);
|
|
} else
|
|
dtc_mask = 1 << (bit_cnt - 1);
|
|
|
|
for (
|
|
;
|
|
bit_cnt;
|
|
bit_cnt--
|
|
) {
|
|
if (x & dtc_mask)
|
|
*tdo_p |= tdo_mask;
|
|
else
|
|
*tdo_p &= ~tdo_mask;
|
|
|
|
dtc_mask >>= 1;
|
|
|
|
tdo_mask <<= 1;
|
|
if (tdo_mask == 0) {
|
|
tdo_p++;
|
|
tdo_mask = 1;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
if ((rq_p->scan.offset + rq_p->scan.length) >= rq_p->scan.size) {
|
|
/* feed scan buffer back into openocd and free it */
|
|
if (jtag_read_buffer(rq_p->scan.buffer,
|
|
rq_p->cmd->cmd.scan) != ERROR_OK)
|
|
retval = ERROR_JTAG_QUEUE_FAILED;
|
|
free(rq_p->scan.buffer);
|
|
}
|
|
|
|
rq_next = rq_p->next;
|
|
free(rq_p);
|
|
}
|
|
dtc_queue.rq_head = NULL;
|
|
dtc_queue.rq_tail = NULL;
|
|
}
|
|
|
|
/* reset state for new appends */
|
|
dtc_queue.cmd_index = 0;
|
|
dtc_queue.reply_index = 0;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* runs the queue if it cannot take reserved_cmd bytes of command data
|
|
* or reserved_reply bytes of reply data */
|
|
static int dtc_queue_run_if_full(int reserved_cmd, int reserved_reply)
|
|
{
|
|
/* reserve one additional byte for the STOP cmd appended during run */
|
|
if (dtc_queue.cmd_index + reserved_cmd + 1 > USB_EP2BANK_SIZE)
|
|
return dtc_queue_run();
|
|
|
|
if (dtc_queue.reply_index + reserved_reply > USB_EP2IN_SIZE)
|
|
return dtc_queue_run();
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int tap_state_queue_init(void)
|
|
{
|
|
tap_state_queue.length = 0;
|
|
tap_state_queue.buffer = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int tap_state_queue_run(void)
|
|
{
|
|
int i;
|
|
int bits;
|
|
uint8_t byte_param;
|
|
int retval;
|
|
|
|
retval = 0;
|
|
if (!tap_state_queue.length)
|
|
return retval;
|
|
bits = 1;
|
|
byte_param = 0;
|
|
for (i = tap_state_queue.length; i--; ) {
|
|
|
|
byte_param <<= 1;
|
|
if (tap_state_queue.buffer & 1)
|
|
byte_param |= 1;
|
|
if ((bits >= 8) || !i) {
|
|
byte_param <<= (8 - bits);
|
|
|
|
/* make sure there's room for two cmd bytes */
|
|
dtc_queue_run_if_full(2, 0);
|
|
|
|
#ifdef USE_HARDWARE_SHIFTER_FOR_TMS
|
|
if (bits == 8) {
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TMS_BYTES(1);
|
|
} else {
|
|
#endif
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TMS_BITS(bits);
|
|
#ifdef USE_HARDWARE_SHIFTER_FOR_TMS
|
|
}
|
|
#endif
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
byte_param;
|
|
|
|
byte_param = 0;
|
|
bits = 1;
|
|
} else
|
|
bits++;
|
|
|
|
tap_state_queue.buffer >>= 1;
|
|
}
|
|
retval = tap_state_queue_init();
|
|
return retval;
|
|
}
|
|
|
|
static int tap_state_queue_append(uint8_t tms)
|
|
{
|
|
int retval;
|
|
|
|
if (tap_state_queue.length >= sizeof(tap_state_queue.buffer) * 8) {
|
|
retval = tap_state_queue_run();
|
|
if (retval != 0)
|
|
return retval;
|
|
}
|
|
|
|
if (tms)
|
|
tap_state_queue.buffer |= (1 << tap_state_queue.length);
|
|
tap_state_queue.length++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void rlink_end_state(tap_state_t state)
|
|
{
|
|
if (tap_is_state_stable(state))
|
|
tap_set_end_state(state);
|
|
else {
|
|
LOG_ERROR("BUG: %i is not a valid end state", state);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
static void rlink_state_move(void)
|
|
{
|
|
|
|
int i = 0, tms = 0;
|
|
uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
|
|
int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
|
|
|
|
for (i = 0; i < tms_count; i++) {
|
|
tms = (tms_scan >> i) & 1;
|
|
tap_state_queue_append(tms);
|
|
}
|
|
|
|
tap_set_state(tap_get_end_state());
|
|
}
|
|
|
|
static void rlink_path_move(struct pathmove_command *cmd)
|
|
{
|
|
int num_states = cmd->num_states;
|
|
int state_count;
|
|
int tms = 0;
|
|
|
|
state_count = 0;
|
|
while (num_states) {
|
|
if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count])
|
|
tms = 0;
|
|
else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count])
|
|
tms = 1;
|
|
else {
|
|
LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
|
|
tap_state_name(tap_get_state()),
|
|
tap_state_name(cmd->path[state_count]));
|
|
exit(-1);
|
|
}
|
|
|
|
tap_state_queue_append(tms);
|
|
|
|
tap_set_state(cmd->path[state_count]);
|
|
state_count++;
|
|
num_states--;
|
|
}
|
|
|
|
tap_set_end_state(tap_get_state());
|
|
}
|
|
|
|
static void rlink_runtest(int num_cycles)
|
|
{
|
|
int i;
|
|
|
|
tap_state_t saved_end_state = tap_get_end_state();
|
|
|
|
/* only do a state_move when we're not already in RTI */
|
|
if (tap_get_state() != TAP_IDLE) {
|
|
rlink_end_state(TAP_IDLE);
|
|
rlink_state_move();
|
|
}
|
|
|
|
/* execute num_cycles */
|
|
for (i = 0; i < num_cycles; i++)
|
|
tap_state_queue_append(0);
|
|
|
|
/* finish in end_state */
|
|
rlink_end_state(saved_end_state);
|
|
if (tap_get_state() != tap_get_end_state())
|
|
rlink_state_move();
|
|
}
|
|
|
|
/* (1) assert or (0) deassert reset lines */
|
|
static void rlink_reset(int trst, int srst)
|
|
{
|
|
uint8_t bitmap;
|
|
int usb_err;
|
|
int transferred;
|
|
|
|
/* Read port A for bit op */
|
|
usb_err = ep1_generic_commandl(
|
|
pHDev, 4,
|
|
EP1_CMD_MEMORY_READ,
|
|
ST7_PADR >> 8,
|
|
ST7_PADR,
|
|
1
|
|
);
|
|
if (usb_err < 0) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
usb_err = jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)&bitmap, 1,
|
|
USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
if (usb_err != ERROR_OK || transferred < 1) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
if (trst)
|
|
bitmap &= ~ST7_PA_NTRST;
|
|
else
|
|
bitmap |= ST7_PA_NTRST;
|
|
|
|
/* Write port A and read port B for bit op
|
|
* port B has no OR, and we want to emulate open drain on NSRST, so we initialize DR to 0
|
|
*and assert NSRST by setting DDR to 1. */
|
|
usb_err = ep1_generic_commandl(
|
|
pHDev, 9,
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PADR >> 8,
|
|
ST7_PADR,
|
|
1,
|
|
bitmap,
|
|
EP1_CMD_MEMORY_READ,
|
|
ST7_PBDDR >> 8,
|
|
ST7_PBDDR,
|
|
1
|
|
);
|
|
if (usb_err < 0) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
usb_err = jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)&bitmap, 1,
|
|
USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
if (usb_err != ERROR_OK || transferred < 1) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
if (srst)
|
|
bitmap |= ST7_PB_NSRST;
|
|
else
|
|
bitmap &= ~ST7_PB_NSRST;
|
|
|
|
/* write port B and read dummy to ensure completion before returning */
|
|
usb_err = ep1_generic_commandl(
|
|
pHDev, 6,
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PBDDR >> 8,
|
|
ST7_PBDDR,
|
|
1,
|
|
bitmap,
|
|
EP1_CMD_DTC_GET_CACHED_STATUS
|
|
);
|
|
if (usb_err < 0) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
|
|
usb_err = jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)&bitmap, 1,
|
|
USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
if (usb_err != ERROR_OK || transferred < 1) {
|
|
LOG_ERROR("%s", libusb_error_name(usb_err));
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
static int rlink_scan(struct jtag_command *cmd, enum scan_type type,
|
|
uint8_t *buffer, int scan_size)
|
|
{
|
|
bool ir_scan;
|
|
tap_state_t saved_end_state;
|
|
int byte_bits;
|
|
int extra_bits;
|
|
int chunk_bits;
|
|
int chunk_bytes;
|
|
int x;
|
|
|
|
int tdi_bit_offset;
|
|
uint8_t tdi_mask, *tdi_p;
|
|
uint8_t dtc_mask;
|
|
|
|
if (scan_size < 1) {
|
|
LOG_ERROR("scan_size cannot be less than 1 bit");
|
|
exit(1);
|
|
}
|
|
|
|
ir_scan = cmd->cmd.scan->ir_scan;
|
|
|
|
/* Move to the proper state before starting to shift TDI/TDO. */
|
|
if (!((!ir_scan && (tap_get_state() == TAP_DRSHIFT)) ||
|
|
(ir_scan && (tap_get_state() == TAP_IRSHIFT)))) {
|
|
saved_end_state = tap_get_end_state();
|
|
rlink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
|
|
rlink_state_move();
|
|
rlink_end_state(saved_end_state);
|
|
}
|
|
|
|
tap_state_queue_run();
|
|
|
|
|
|
#if 0
|
|
printf("scan_size = %d, type = 0x%x\n", scan_size, type);
|
|
{
|
|
int i;
|
|
|
|
/* clear unused bits in scan buffer for ease of debugging
|
|
* (it makes diffing output easier) */
|
|
buffer[scan_size / 8] &= ((1 << ((scan_size - 1) % 8) + 1) - 1);
|
|
|
|
printf("before scan:");
|
|
for (i = 0; i < (scan_size + 7) / 8; i++)
|
|
printf(" %02x", buffer[i]);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
/* The number of bits that can be shifted as complete bytes */
|
|
byte_bits = (int)(scan_size - 1) / 8 * 8;
|
|
/* The number of bits left over, not counting the last bit */
|
|
extra_bits = (scan_size - 1) - byte_bits;
|
|
|
|
tdi_bit_offset = 0;
|
|
tdi_p = buffer;
|
|
tdi_mask = 1;
|
|
|
|
if (extra_bits && (type == SCAN_OUT)) {
|
|
/* Schedule any extra bits into the DTC command buffer, padding as needed
|
|
* For SCAN_OUT, this comes before the full bytes so the (leading) padding bits will
|
|
*fall off the end */
|
|
|
|
/* make sure there's room for two cmd bytes */
|
|
dtc_queue_run_if_full(2, 0);
|
|
|
|
x = 0;
|
|
dtc_mask = 1 << (extra_bits - 1);
|
|
|
|
while (extra_bits--) {
|
|
if (*tdi_p & tdi_mask)
|
|
x |= dtc_mask;
|
|
|
|
dtc_mask >>= 1;
|
|
|
|
tdi_mask <<= 1;
|
|
if (tdi_mask == 0) {
|
|
tdi_p++;
|
|
tdi_mask = 1;
|
|
}
|
|
}
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TDI_BYTES(1);
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] = x;
|
|
}
|
|
|
|
/* Loop scheduling full bytes into the DTC command buffer */
|
|
while (byte_bits) {
|
|
/* make sure there's room for one (for in scans) or two cmd bytes and
|
|
* at least one reply byte for in or inout scans*/
|
|
dtc_queue_run_if_full(type == SCAN_IN ? 1 : 2, type != SCAN_OUT ? 1 : 0);
|
|
|
|
chunk_bits = byte_bits;
|
|
/* we can only use up to 16 bytes at a time */
|
|
if (chunk_bits > (16 * 8))
|
|
chunk_bits = (16 * 8);
|
|
|
|
if (type != SCAN_IN) {
|
|
/* how much is there room for, considering stop and byte op? */
|
|
x = (sizeof(dtc_queue.cmd_buffer) - (dtc_queue.cmd_index + 1 + 1)) * 8;
|
|
if (chunk_bits > x)
|
|
chunk_bits = x;
|
|
}
|
|
|
|
if (type != SCAN_OUT) {
|
|
/* how much is there room for in the reply buffer? */
|
|
x = (USB_EP2IN_SIZE - dtc_queue.reply_index) * 8;
|
|
if (chunk_bits > x)
|
|
chunk_bits = x;
|
|
}
|
|
|
|
/* so the loop will end */
|
|
byte_bits -= chunk_bits;
|
|
|
|
if (type != SCAN_OUT) {
|
|
if (dtc_queue_enqueue_reply(
|
|
type, buffer, scan_size, tdi_bit_offset,
|
|
chunk_bits,
|
|
cmd
|
|
) == NULL) {
|
|
LOG_ERROR("enqueuing DTC reply entry: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
dtc_queue.reply_index += (chunk_bits + 7) / 8;
|
|
|
|
tdi_bit_offset += chunk_bits;
|
|
}
|
|
|
|
/* chunk_bits is a multiple of 8, so there are no rounding issues. */
|
|
chunk_bytes = chunk_bits / 8;
|
|
|
|
switch (type) {
|
|
case SCAN_IN:
|
|
x = DTC_CMD_SHIFT_TDO_BYTES(chunk_bytes);
|
|
break;
|
|
case SCAN_OUT:
|
|
x = DTC_CMD_SHIFT_TDI_BYTES(chunk_bytes);
|
|
break;
|
|
default:
|
|
x = DTC_CMD_SHIFT_TDIO_BYTES(chunk_bytes);
|
|
break;
|
|
}
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] = x;
|
|
|
|
if (type != SCAN_IN) {
|
|
x = 0;
|
|
dtc_mask = 1 << (8 - 1);
|
|
|
|
while (chunk_bits--) {
|
|
if (*tdi_p & tdi_mask)
|
|
x |= dtc_mask;
|
|
|
|
dtc_mask >>= 1;
|
|
if (dtc_mask == 0) {
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] = x;
|
|
x = 0;
|
|
dtc_mask = 1 << (8 - 1);
|
|
}
|
|
|
|
tdi_mask <<= 1;
|
|
if (tdi_mask == 0) {
|
|
tdi_p++;
|
|
tdi_mask = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (extra_bits && (type != SCAN_OUT)) {
|
|
/* Schedule any extra bits into the DTC command buffer */
|
|
|
|
/* make sure there's room for one (for in scans) or two cmd bytes
|
|
* and one reply byte */
|
|
dtc_queue_run_if_full(type == SCAN_IN ? 1 : 2, 1);
|
|
|
|
if (dtc_queue_enqueue_reply(
|
|
type, buffer, scan_size, tdi_bit_offset,
|
|
extra_bits,
|
|
cmd
|
|
) == NULL) {
|
|
LOG_ERROR("enqueuing DTC reply entry: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
dtc_queue.reply_index++;
|
|
|
|
tdi_bit_offset += extra_bits;
|
|
|
|
if (type == SCAN_IN) {
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TDO_BYTES(1);
|
|
|
|
} else {
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TDIO_BITS(extra_bits);
|
|
|
|
x = 0;
|
|
dtc_mask = 1 << (8 - 1);
|
|
|
|
while (extra_bits--) {
|
|
if (*tdi_p & tdi_mask)
|
|
x |= dtc_mask;
|
|
|
|
dtc_mask >>= 1;
|
|
|
|
tdi_mask <<= 1;
|
|
if (tdi_mask == 0) {
|
|
tdi_p++;
|
|
tdi_mask = 1;
|
|
}
|
|
}
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] = x;
|
|
}
|
|
}
|
|
|
|
/* Schedule the last bit into the DTC command buffer */
|
|
|
|
/* make sure there's room for one cmd byte and one reply byte
|
|
* for in or inout scans*/
|
|
dtc_queue_run_if_full(1, type == SCAN_OUT ? 0 : 1);
|
|
|
|
if (type == SCAN_OUT) {
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TMS_TDI_BIT_PAIR(1, (*tdi_p & tdi_mask), 0);
|
|
|
|
} else {
|
|
if (dtc_queue_enqueue_reply(
|
|
type, buffer, scan_size, tdi_bit_offset,
|
|
1,
|
|
cmd
|
|
) == NULL) {
|
|
LOG_ERROR("enqueuing DTC reply entry: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
dtc_queue.reply_index++;
|
|
|
|
dtc_queue.cmd_buffer[dtc_queue.cmd_index++] =
|
|
DTC_CMD_SHIFT_TMS_TDI_BIT_PAIR(1, (*tdi_p & tdi_mask), 1);
|
|
}
|
|
|
|
/* Move to pause state */
|
|
tap_state_queue_append(0);
|
|
tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
|
|
if (tap_get_state() != tap_get_end_state())
|
|
rlink_state_move();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rlink_execute_queue(void)
|
|
{
|
|
struct jtag_command *cmd = jtag_command_queue; /* currently processed command */
|
|
int scan_size;
|
|
enum scan_type type;
|
|
uint8_t *buffer;
|
|
int retval, tmp_retval;
|
|
|
|
/* return ERROR_OK, unless something goes wrong */
|
|
retval = ERROR_OK;
|
|
|
|
#ifndef AUTOMATIC_BUSY_LED
|
|
/* turn LED on */
|
|
ep1_generic_commandl(pHDev, 2,
|
|
EP1_CMD_SET_PORTD_LEDS,
|
|
~(ST7_PD_NBUSY_LED)
|
|
);
|
|
#endif
|
|
|
|
while (cmd) {
|
|
switch (cmd->type) {
|
|
case JTAG_RUNTEST:
|
|
case JTAG_TLR_RESET:
|
|
case JTAG_PATHMOVE:
|
|
case JTAG_SCAN:
|
|
break;
|
|
|
|
default:
|
|
/* some events, such as resets, need a queue flush to ensure
|
|
*consistency */
|
|
tap_state_queue_run();
|
|
dtc_queue_run();
|
|
break;
|
|
}
|
|
|
|
switch (cmd->type) {
|
|
case JTAG_RESET:
|
|
LOG_DEBUG_IO("reset trst: %i srst %i",
|
|
cmd->cmd.reset->trst,
|
|
cmd->cmd.reset->srst);
|
|
if ((cmd->cmd.reset->trst == 1) ||
|
|
(cmd->cmd.reset->srst &&
|
|
(jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
|
|
tap_set_state(TAP_RESET);
|
|
rlink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
|
|
break;
|
|
case JTAG_RUNTEST:
|
|
LOG_DEBUG_IO("runtest %i cycles, end in %i",
|
|
cmd->cmd.runtest->num_cycles,
|
|
cmd->cmd.runtest->end_state);
|
|
if (cmd->cmd.runtest->end_state != -1)
|
|
rlink_end_state(cmd->cmd.runtest->end_state);
|
|
rlink_runtest(cmd->cmd.runtest->num_cycles);
|
|
break;
|
|
case JTAG_TLR_RESET:
|
|
LOG_DEBUG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
|
|
if (cmd->cmd.statemove->end_state != -1)
|
|
rlink_end_state(cmd->cmd.statemove->end_state);
|
|
rlink_state_move();
|
|
break;
|
|
case JTAG_PATHMOVE:
|
|
LOG_DEBUG_IO("pathmove: %i states, end in %i",
|
|
cmd->cmd.pathmove->num_states,
|
|
cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
|
|
rlink_path_move(cmd->cmd.pathmove);
|
|
break;
|
|
case JTAG_SCAN:
|
|
LOG_DEBUG_IO("%s scan end in %i",
|
|
(cmd->cmd.scan->ir_scan) ? "IR" : "DR",
|
|
cmd->cmd.scan->end_state);
|
|
if (cmd->cmd.scan->end_state != -1)
|
|
rlink_end_state(cmd->cmd.scan->end_state);
|
|
scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
|
|
type = jtag_scan_type(cmd->cmd.scan);
|
|
if (rlink_scan(cmd, type, buffer, scan_size) != ERROR_OK)
|
|
retval = ERROR_FAIL;
|
|
break;
|
|
case JTAG_SLEEP:
|
|
LOG_DEBUG_IO("sleep %" PRIu32, cmd->cmd.sleep->us);
|
|
jtag_sleep(cmd->cmd.sleep->us);
|
|
break;
|
|
default:
|
|
LOG_ERROR("BUG: unknown JTAG command type encountered");
|
|
exit(-1);
|
|
}
|
|
cmd = cmd->next;
|
|
}
|
|
|
|
/* Flush the DTC queue to make sure any pending reads have been done before exiting this
|
|
*function */
|
|
tap_state_queue_run();
|
|
tmp_retval = dtc_queue_run();
|
|
if (tmp_retval != ERROR_OK)
|
|
retval = tmp_retval;
|
|
|
|
#ifndef AUTOMATIC_BUSY_LED
|
|
/* turn LED off */
|
|
ep1_generic_commandl(pHDev, 2,
|
|
EP1_CMD_SET_PORTD_LEDS,
|
|
~0
|
|
);
|
|
#endif
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* Using an unindexed table because it is infrequently accessed and it is short. The table must be
|
|
*in order of ascending speed (and descending prescaler), as it is scanned in reverse. */
|
|
|
|
static int rlink_speed(int speed)
|
|
{
|
|
int i;
|
|
|
|
if (speed == 0) {
|
|
/* fastest speed */
|
|
speed = rlink_speed_table[rlink_speed_table_size - 1].prescaler;
|
|
}
|
|
|
|
for (i = rlink_speed_table_size; i--; ) {
|
|
if (rlink_speed_table[i].prescaler == speed) {
|
|
if (dtc_load_from_buffer(pHDev, rlink_speed_table[i].dtc,
|
|
rlink_speed_table[i].dtc_size) != 0) {
|
|
LOG_ERROR(
|
|
"An error occurred while trying to load DTC code for speed \"%d\".",
|
|
speed);
|
|
exit(1);
|
|
}
|
|
|
|
int ret = dtc_start_download();
|
|
if (ret < 0) {
|
|
LOG_ERROR("starting DTC: %s", libusb_error_name(ret));
|
|
exit(1);
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
}
|
|
|
|
LOG_ERROR("%d is not a supported speed", speed);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
static int rlink_speed_div(int speed, int *khz)
|
|
{
|
|
int i;
|
|
|
|
for (i = rlink_speed_table_size; i--; ) {
|
|
if (rlink_speed_table[i].prescaler == speed) {
|
|
*khz = rlink_speed_table[i].khz;
|
|
return ERROR_OK;
|
|
}
|
|
}
|
|
|
|
LOG_ERROR("%d is not a supported speed", speed);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
static int rlink_khz(int khz, int *speed)
|
|
{
|
|
int i;
|
|
|
|
if (khz == 0) {
|
|
LOG_ERROR("RCLK not supported");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
for (i = rlink_speed_table_size; i--; ) {
|
|
if (rlink_speed_table[i].khz <= khz) {
|
|
*speed = rlink_speed_table[i].prescaler;
|
|
return ERROR_OK;
|
|
}
|
|
}
|
|
|
|
LOG_WARNING("The lowest supported JTAG speed is %d KHz", rlink_speed_table[0].khz);
|
|
*speed = rlink_speed_table[0].prescaler;
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int rlink_init(void)
|
|
{
|
|
int i, j, retries;
|
|
uint8_t reply_buffer[USB_EP1IN_SIZE];
|
|
int transferred;
|
|
|
|
const uint16_t vids[] = { USB_IDVENDOR, 0 };
|
|
const uint16_t pids[] = { USB_IDPRODUCT, 0 };
|
|
if (jtag_libusb_open(vids, pids, NULL, &pHDev, NULL) != ERROR_OK)
|
|
return ERROR_FAIL;
|
|
|
|
struct libusb_device_descriptor descriptor;
|
|
struct libusb_device *usb_dev = libusb_get_device(pHDev);
|
|
int r = libusb_get_device_descriptor(usb_dev, &descriptor);
|
|
if (r < 0) {
|
|
LOG_ERROR("error %d getting device descriptor", r);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
if (descriptor.bNumConfigurations > 1) {
|
|
LOG_ERROR("Whoops! NumConfigurations is not 1, don't know what to do...");
|
|
return ERROR_FAIL;
|
|
}
|
|
struct libusb_config_descriptor *config;
|
|
libusb_get_config_descriptor(usb_dev, 0, &config);
|
|
if (config->bNumInterfaces > 1) {
|
|
LOG_ERROR("Whoops! NumInterfaces is not 1, don't know what to do...");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
LOG_DEBUG("Opened device, pHDev = %p", pHDev);
|
|
|
|
/* usb_set_configuration required under win32 */
|
|
libusb_set_configuration(pHDev, config->bConfigurationValue);
|
|
|
|
retries = 3;
|
|
do {
|
|
i = libusb_claim_interface(pHDev, 0);
|
|
if (i != LIBUSB_SUCCESS) {
|
|
LOG_ERROR("usb_claim_interface: %s", libusb_error_name(i));
|
|
j = libusb_detach_kernel_driver(pHDev, 0);
|
|
if (j != LIBUSB_SUCCESS)
|
|
LOG_ERROR("detach kernel driver: %s", libusb_error_name(j));
|
|
} else {
|
|
LOG_DEBUG("interface claimed!");
|
|
break;
|
|
}
|
|
} while (--retries);
|
|
|
|
if (i != LIBUSB_SUCCESS) {
|
|
LOG_ERROR("Initialisation failed.");
|
|
return ERROR_FAIL;
|
|
}
|
|
if (libusb_set_interface_alt_setting(pHDev, 0, 0) != LIBUSB_SUCCESS) {
|
|
LOG_ERROR("Failed to set interface.");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
/* The device starts out in an unknown state on open. As such,
|
|
* result reads time out, and it's not even known whether the
|
|
* command was accepted. So, for this first command, we issue
|
|
* it repeatedly until its response doesn't time out. Also, if
|
|
* sending a command is going to time out, we find that out here.
|
|
*
|
|
* It must be possible to open the device in such a way that
|
|
* this special magic isn't needed, but, so far, it escapes us.
|
|
*/
|
|
for (i = 0; i < 5; i++) {
|
|
j = ep1_generic_commandl(
|
|
pHDev, 1,
|
|
EP1_CMD_GET_FWREV
|
|
);
|
|
if (j < USB_EP1OUT_SIZE) {
|
|
LOG_ERROR("USB write error: %s", libusb_error_name(j));
|
|
return ERROR_FAIL;
|
|
}
|
|
j = jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)reply_buffer, sizeof(reply_buffer),
|
|
200,
|
|
&transferred
|
|
);
|
|
if (j != LIBUSB_ERROR_TIMEOUT)
|
|
break;
|
|
}
|
|
|
|
if (j != ERROR_OK || transferred != (int)sizeof(reply_buffer)) {
|
|
LOG_ERROR("USB read error: %s", libusb_error_name(j));
|
|
return ERROR_FAIL;
|
|
}
|
|
LOG_DEBUG(INTERFACE_NAME " firmware version: %d.%d.%d",
|
|
reply_buffer[0],
|
|
reply_buffer[1],
|
|
reply_buffer[2]);
|
|
|
|
if ((reply_buffer[0] != 0) || (reply_buffer[1] != 0) || (reply_buffer[2] != 3))
|
|
LOG_WARNING(
|
|
"The rlink device is not of the version that the developers have played with. It may or may not work.");
|
|
|
|
/* Probe port E for adapter presence */
|
|
ep1_generic_commandl(
|
|
pHDev, 16,
|
|
EP1_CMD_MEMORY_WRITE, /* Drive sense pin with 0 */
|
|
ST7_PEDR >> 8,
|
|
ST7_PEDR,
|
|
3,
|
|
0x00, /* DR */
|
|
ST7_PE_ADAPTER_SENSE_OUT, /* DDR */
|
|
ST7_PE_ADAPTER_SENSE_OUT, /* OR */
|
|
EP1_CMD_MEMORY_READ, /* Read back */
|
|
ST7_PEDR >> 8,
|
|
ST7_PEDR,
|
|
1,
|
|
EP1_CMD_MEMORY_WRITE, /* Drive sense pin with 1 */
|
|
ST7_PEDR >> 8,
|
|
ST7_PEDR,
|
|
1,
|
|
ST7_PE_ADAPTER_SENSE_OUT
|
|
);
|
|
|
|
jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)reply_buffer, 1,
|
|
USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
|
|
if ((reply_buffer[0] & ST7_PE_ADAPTER_SENSE_IN) != 0)
|
|
LOG_WARNING("target detection problem");
|
|
|
|
ep1_generic_commandl(
|
|
pHDev, 11,
|
|
EP1_CMD_MEMORY_READ, /* Read back */
|
|
ST7_PEDR >> 8,
|
|
ST7_PEDR,
|
|
1,
|
|
EP1_CMD_MEMORY_WRITE, /* float port E */
|
|
ST7_PEDR >> 8,
|
|
ST7_PEDR,
|
|
3,
|
|
0x00, /* DR */
|
|
0x00, /* DDR */
|
|
0x00 /* OR */
|
|
);
|
|
|
|
jtag_libusb_bulk_read(
|
|
pHDev, USB_EP1IN_ADDR,
|
|
(char *)reply_buffer, 1,
|
|
USB_TIMEOUT_MS,
|
|
&transferred
|
|
);
|
|
|
|
|
|
if ((reply_buffer[0] & ST7_PE_ADAPTER_SENSE_IN) == 0)
|
|
LOG_WARNING("target not plugged in");
|
|
|
|
/* float ports A and B */
|
|
ep1_generic_commandl(
|
|
pHDev, 11,
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PADDR >> 8,
|
|
ST7_PADDR,
|
|
2,
|
|
0x00,
|
|
0x00,
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PBDDR >> 8,
|
|
ST7_PBDDR,
|
|
1,
|
|
0x00
|
|
);
|
|
|
|
/* make sure DTC is stopped, set VPP control, set up ports A and B */
|
|
ep1_generic_commandl(
|
|
pHDev, 14,
|
|
EP1_CMD_DTC_STOP,
|
|
EP1_CMD_SET_PORTD_VPP,
|
|
~(ST7_PD_VPP_SHDN),
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PADR >> 8,
|
|
ST7_PADR,
|
|
2,
|
|
((~(0)) & (ST7_PA_NTRST)),
|
|
(ST7_PA_NTRST),
|
|
/* port B has no OR, and we want to emulate open drain on NSRST, so we set DR to 0
|
|
*here and later assert NSRST by setting DDR bit to 1. */
|
|
EP1_CMD_MEMORY_WRITE,
|
|
ST7_PBDR >> 8,
|
|
ST7_PBDR,
|
|
1,
|
|
0x00
|
|
);
|
|
|
|
/* set LED updating mode and make sure they're unlit */
|
|
ep1_generic_commandl(
|
|
pHDev, 3,
|
|
#ifdef AUTOMATIC_BUSY_LED
|
|
EP1_CMD_LEDUE_BUSY,
|
|
#else
|
|
EP1_CMD_LEDUE_NONE,
|
|
#endif
|
|
EP1_CMD_SET_PORTD_LEDS,
|
|
~0
|
|
);
|
|
|
|
tap_state_queue_init();
|
|
dtc_queue_init();
|
|
rlink_reset(0, 0);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int rlink_quit(void)
|
|
{
|
|
/* stop DTC and make sure LEDs are off */
|
|
ep1_generic_commandl(
|
|
pHDev, 6,
|
|
EP1_CMD_DTC_STOP,
|
|
EP1_CMD_LEDUE_NONE,
|
|
EP1_CMD_SET_PORTD_LEDS,
|
|
~0,
|
|
EP1_CMD_SET_PORTD_VPP,
|
|
~0
|
|
);
|
|
|
|
libusb_release_interface(pHDev, 0);
|
|
libusb_close(pHDev);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static struct jtag_interface rlink_interface = {
|
|
.execute_queue = rlink_execute_queue,
|
|
};
|
|
|
|
struct adapter_driver rlink_adapter_driver = {
|
|
.name = "rlink",
|
|
.transports = jtag_only,
|
|
|
|
.init = rlink_init,
|
|
.quit = rlink_quit,
|
|
.speed = rlink_speed,
|
|
.khz = rlink_khz,
|
|
.speed_div = rlink_speed_div,
|
|
|
|
.jtag_ops = &rlink_interface,
|
|
};
|