f5aa2e11cd
OpenOCD cannot connect to BCM2837's JTAG interface on RPi 3 board until the reset configuration mode is set as trst_only. According to Table 6-31 GPIO Pins Alternative Function Assignment of Broadcom's BCM2837 ARM Peripherials datasheet [1] and Raspberry Pi's GPIO control in config.txt document [2], only Test Reset (TRST) pin (no System Reset, SRST) is exposed. [1] https://usermanual.wiki/Datasheet/BCM2837ARMPeripheralsBroadcom.1054296467/view [2] https://www.raspberrypi.org/documentation/configuration/config-txt/gpio.md Change-Id: I26ff3924039ff7943faf0a5b1ad0427c8dbb88f2 Link: http://openocd.zylin.com/#/c/6364/1 Signed-off-by: Jian-Hong Pan <chienhung.pan@gmail.com> Reviewed-on: http://openocd.zylin.com/6366 Tested-by: jenkins Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
14 lines
462 B
INI
14 lines
462 B
INI
# SPDX-License-Identifier: GPL-2.0-or-later
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# This is the Raspberry Pi 3 board with BCM2837 chip
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# https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837/README.md
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#
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# Enable JTAG GPIO on Raspberry Pi boards
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# https://www.raspberrypi.org/documentation/configuration/config-txt/gpio.md
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source [find target/bcm2837.cfg]
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transport select jtag
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# Raspberry Pi boards only expose Test Reset (TRST) pin, no System Reset (SRST)
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reset_config trst_only
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