[求助]非官方FPGA开发板，四线JTAG下载程序失败，请问如何解决？_开源蜂鸟E203

论坛/开源蜂鸟E203/[求助]非官方FPGA开发板，四线JTAG下载程序失败，请问如何解决？

[求助]非官方FPGA开发板，四线JTAG下载程序失败，请问如何解决？

开源蜂鸟E203 作者 MicrooGRIT 发布于 2023-02-12 14:41（1335 天前） 7452 浏览

开发板：正点原子达芬奇Pro开发板FPGA Artix-7 XC7A100T
调试器：Sipeed USB-JTAG/TTL RISC-V调试器

OpenOCD报错如下：

Open On-Chip Debugger 0.11.0+dev-01897-gc8fc2a168 (2022-04-01-04:46)
Licensed under GNU GPL v2
For bug reports, read
    http://openocd.org/doc/doxygen/bugs.html
DEPRECATED! use 'adapter speed' not 'adapter_khz'
DEPRECATED! use 'adapter driver' not 'interface'
Info : Using libusb driver
Info : clock speed 1000 kHz
Info : JTAG tap: riscv.cpu tap/device found: 0x1e200a6d (mfg: 0x536 (Nuclei System Technology Co Ltd), part: 0xe200, ver: 0x1)
Info : TAP auto0.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto1.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto2.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto3.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto4.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto5.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto6.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto7.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto8.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto9.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto10.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto11.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto12.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto13.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto14.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto15.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto16.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto17.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto18.tap does not have valid IDCODE (idcode=0x0)
Info : TAP auto19.tap does not have valid IDCODE (idcode=0x0)
Warn : Unexpected idcode after end of chain: 52 0x00000000
Warn : Unexpected idcode after end of chain: 84 0xfe000000
Error: double-check your JTAG setup (interface, speed, ...)
Error: Trying to use configured scan chain anyway...
Warn : AUTO auto0.tap - use "jtag newtap auto0 tap -irlen 2 -expected-id 0x00000000"
Error: auto0.tap: IR capture error; saw 0x0000 not 0x0001
Warn : Bypassing JTAG setup events due to errors
Error: Unsupported DTM version 14. (dtmcontrol=0xffe)
Warn : target riscv.cpu examination failed
Info : starting gdb server for riscv.cpu on 3333
Info : Listening on port 3333 for gdb connections
Error: Target not examined yet

全部回复 10

胡灿1332 天前 · 1 楼

那就把OpenOCD的详细log打印出来看看吧。

用两条命令在两个terminal里面来跑，make run_openocd先运行OpenOCD，要加上-D参数就会打印详细log，openOCD起来后再换个terminal运行GDB，make run_gdb，具体的命令如何运行看看Hbird SDK如何使用。

MicrooGRIT1333 天前 · 2 楼

回复 MicrooGRIT：

去掉这个约束还是同样的情况

我的TOP也是参考您的官方例程

MicrooGRIT1333 天前 · 3 楼

回复 MicrooGRIT：

本来是没有加TCK时钟约束的，后来觉得是一个时钟的输入，所以需要约束一下，我修改后再试一下，谢谢胡先生！

去掉这个约束还是同样的情况

MicrooGRIT1333 天前 · 4 楼

回复胡灿：

为何JTAG TCK上还接了固定时钟呢，这个是由调试器来产生的信号。

参考下蜂鸟自身的约束文件和FPGA TOP吧

本来是没有加TCK时钟约束的，后来觉得是一个时钟的输入，所以需要约束一下，我修改后再试一下，谢谢胡先生！

胡灿1333 天前 · 5 楼

回复 MicrooGRIT：

谢谢胡先生的回复！

我的约束如下：

```

#------------------------------系统时钟和复位-----------------------------------

create_clock -period 20.000 -name sys_clk [get_ports sys_clk]

set_property -dict {PACKAGE_PIN R4 IOSTANDARD LVCMOS15} [get_ports sys_clk]

set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets sys_clk]

set_property -dict {PACKAGE_PIN U7 IOSTANDARD LVCMOS15} [get_ports mcu_rst]

create_clock -period 1000.000 -name jtag_clk [get_ports mcu_TCK]

set_clock_groups -asynchronous -group [get_clocks -include_generated_clocks CLK_O_8M388_PLL]

-group [get_clocks -include_generated_clocks CLK_O_16M_PLL]

-group [get_clocks -include_generated_clocks jtag_clk]

#-----------------------------------UART----------------------------------------

set_property -dict {PACKAGE_PIN E14 IOSTANDARD LVCMOS33} [get_ports uart0_rxd]

set_property -dict {PACKAGE_PIN D17 IOSTANDARD LVCMOS33} [get_ports uart0_txd]

#-----------------------------------MCU_JTAG----------------------------------------

set_property -dict {PACKAGE_PIN T14 IOSTANDARD LVCMOS33} [get_ports mcu_TCK]

set_property -dict {PACKAGE_PIN AA9 IOSTANDARD LVCMOS33} [get_ports mcu_TDO]

set_property -dict {PACKAGE_PIN V10 IOSTANDARD LVCMOS33} [get_ports mcu_TMS]

set_property -dict {PACKAGE_PIN N15 IOSTANDARD LVCMOS33} [get_ports mcu_TDI]

set_property KEEPER true [get_ports mcu_TMS]

set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets IOBUF_jtag_TCK/O]

#---------------------------------QSPI_FLASH----------------------------------------

set_property -dict {PACKAGE_PIN Y16 IOSTANDARD LVCMOS33} [get_ports qspi0_cs]

set_property -dict {PACKAGE_PIN AB16 IOSTANDARD LVCMOS33} [get_ports qspi0_sck]

set_property -dict {PACKAGE_PIN AA15 IOSTANDARD LVCMOS33} [get_ports qspi0_dq[0]]

set_property -dict {PACKAGE_PIN Y13 IOSTANDARD LVCMOS33} [get_ports qspi0_dq[1]]

set_property -dict {PACKAGE_PIN AA13 IOSTANDARD LVCMOS33} [get_ports qspi0_dq[2]]

set_property -dict {PACKAGE_PIN W11 IOSTANDARD LVCMOS33} [get_ports qspi0_dq[3]]

```

为何JTAG TCK上还接了固定时钟呢，这个是由调试器来产生的信号。

参考下蜂鸟自身的约束文件和FPGA TOP吧

MicrooGRIT1333 天前 · 6 楼

回复胡灿：

这个看上去是JTAG除了检测出蜂鸟的内核外，还在往后扫描，读到的东西又不对。

检测一下硬件架构和管脚约束吧