mirror of
git://git.code.sf.net/p/openocd/code
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bec6c0eb09
Speed calibration coeffs are computed from cpufreq/scaling_max_freq and from the device-tree compatibility information. Raspberry Pi linux offers /dev/gpiomem for non-root access to the GPIO registers since ~2016. Do not configure 'bcm2835gpio peripheral_base' as it is necessary only if /dev/mem is used - it requires running OpenOCD as root - it's a security risk so it should be avoided. The configuration of the GPIO connector (40-pin header) is factored out and ready to use in interface configuration for other driver (e.g. linux gpiod). Mark raspberrypi2-native.cfg as deprecated and redirect it to raspberrypi-native.cfg Change-Id: Icce856fb660b45374e94174da279feb51f529908 Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: https://review.openocd.org/c/openocd/+/7264 Tested-by: jenkins Reviewed-by: Jonathan Bell <jonathan@raspberrypi.com> Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
43 lines
1.3 KiB
INI
43 lines
1.3 KiB
INI
# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# Config for Raspberry Pi GPIO header
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#
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# This is best used with a fast enough buffer but also
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# is suitable for direct connection if the target voltage
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# matches RPi's 3.3V and the cable is short enough.
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#
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# Do not forget the GND connection, e.g. pin 20 of the GPIO header.
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#
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# GPIO 25 (pin 22) previously used for TMS/SWDIO is pulled-down by default.
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# The JTAG/SWD specification requires pull-up at the target board
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# for either signal. Connecting the signal pulled-up on the target
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# to the pull-down on the adapter is not a good idea.
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# GPIO 8 is pulled-up by default.
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echo "Warn : TMS/SWDIO moved to GPIO 8 (pin 24). Check the wiring please!"
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# Each of the JTAG lines need a gpio number set: tck tms tdi tdo
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# Header pin numbers: 23 24 19 21
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adapter gpio tck -chip 0 11
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adapter gpio tms -chip 0 8
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adapter gpio tdi -chip 0 10
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adapter gpio tdo -chip 0 9
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# Each of the SWD lines need a gpio number set: swclk swdio
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# Header pin numbers: 23 24
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adapter gpio swclk -chip 0 11
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adapter gpio swdio -chip 0 8
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# If you define trst or srst, use appropriate reset_config
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# Header pin numbers: TRST - 26, SRST - 18
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# adapter gpio trst -chip 0 7
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# reset_config trst_only
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# adapter gpio srst -chip 0 24
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# reset_config srst_only srst_push_pull
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# or if you have both connected,
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# reset_config trst_and_srst srst_push_pull
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