5c46a5de49
The bcm2835gpio driver preferred /dev/gpiomem for access to memory mapped GPIO control and used /dev/mem as a fallback only if it couldn't open /dev/gpiomem. /dev/mem usually requires elevated rights or specific capabilities of the opening process, so the fallback failed anyway. Although /dev/gpiomem is the strongly preferred option with respect to security, there could be also use cases which require /dev/mem even if /dev/gpiomem is available (e.g. changing the GPIO pad settings is necessary or testing/debugging OpenOCD). It was difficult to handle such cases because they required to block globally the system device /dev/gpiomem (remove, rename or chmod). Drop the fallback feature and select the memory device by 'bcm2835gpio peripheral_mem_dev' configuration command. Use /dev/gpiomem as a default. Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Change-Id: I60e427bda795d7a13d55d61443590dd31d694832 Reviewed-on: https://review.openocd.org/c/openocd/+/7350 Tested-by: jenkins Reviewed-by: Jonathan Bell <jonathan@raspberrypi.com> |
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| .. | ||
| manual | ||
| usb_adapters | ||
| .gitattributes | ||
| Makefile.am | ||
| checkpatch.rst | ||
| fdl.texi | ||
| openocd.1 | ||
| openocd.texi | ||