interesting
/
riscv-openocd
mirror of https://github.com/riscv/riscv-openocd.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

jtag/drivers/bcm2835gpio: bcm2835gpio_init has been updated 

For jtag/drivers/bcm2835gpio dev_mem_fd has been updated within
bcm2835gpio_init with the add on of gpio to mem. This permits the
access to memory of GPIO without the need for root access.
For failed attempt, a fallback to original memory follows.
It should be noted that any printed error is relative to original
memory ("dev/mem").
Tested on EFM32GG12B390F board

Change-Id: I4540bdf62fb3b91a51221e277881adfae138dcc5
Signed-off-by: tscn92 <tscn@kamstrup.com>
Reviewed-on: http://openocd.zylin.com/5568
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
tscn92 2020-04-06 16:05:08 +02:00 committed by Antonio Borneo
parent ae4113d877
commit 93e4bed056
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/jtag/drivers/bcm2835gpio.c
View File

@ -466,7 +466,11 @@ static int bcm2835gpio_init(void)
return ERROR_JTAG_INIT_FAILED;
}
dev_mem_fd = open("/dev/mem", O_RDWR | O_SYNC);
dev_mem_fd = open("/dev/gpiomem", O_RDWR | O_SYNC);
if (dev_mem_fd < 0) {
LOG_DEBUG("Cannot open /dev/gpiomem, fallback to /dev/mem");
dev_mem_fd = open("/dev/mem", O_RDWR | O_SYNC);
}
if (dev_mem_fd < 0) {
perror("open");
return ERROR_JTAG_INIT_FAILED;