RPI4b Revision 7 not supported by HAL_PI_GIO

I received a new Raspberry 4b (4Gig) and after switching it with an older one Linuxcnc refuses to start.
There is an error message that Revision 7 is not supported by HAL_PI_GPIO...

How can this be resolved?

The problem is that the cpuinfo.c module needs to be updated.

To temporarily overcome the problem, copy the file /proc/cpuinfo in /tmp with the following command:

Edit the contents of the /tmp/cpuinfo.txt file by changing the Revision to this

Revision: c03112

and then use the following command

and start LinuxCNC.

However it would be useful to completely review the functioning of the cpuinfo.c and hal_pi_gpio module as suggested in this link www.raspberrypi.com/documentation/comput...ry-pi-revision-codes

Let me know what revision your new Raspberry has.
To find out  you need to type

elovalvo wrote:

However it would be useful to completely review the functioning of the cpuinfo.c and hal_pi_gpio module as suggested in this link www.raspberrypi.com/documentation/comput...ry-pi-revision-codes

cpuinfo.c was changed last night.
github.com/LinuxCNC/linuxcnc/commit/2cb7...602d279d0bf5aca40e26

Here is my cpuinfo:

I downloaded the corresponding files from github and used halcompile to generate the .so file.
Then i copied the file to /usr/lib/linuxcnc/modules.
unfortunately i still have an error on startup of Linuxcnc:  

itsme wrote:

Here is my cpuinfo:

Code:

Hardware    : BCM2835 Revision    : c03115 Serial        : 10000000eeeXXXXX Model        : Raspberry Pi 4 Model B Rev 1.5

Did you try the workaround given here?

forum.linuxcnc.org/24-hal-components/495...by-hal-pi-gio#275572

I now tried the given workaround and this works well with the unmodified HAL_PI_GPIO.

Thank you!

Unfortunately this workaround is not persistent, after a reboot the cpuinfo is reset by the system and the workaround has to be done again to make LCNC start.

 [attachment=54524 wrote: startlcnc.txt[/attachment]itsme post=275585 userid=28738"]Unfortunately this workaround is not persistent, after a reboot the cpuinfo is reset by the system and the workaround has to be done again to make LCNC start. 
 

While waiting for Andy to complete his precious work, download this file to the Raspberry then run the following commands:


and LinuxCNC will always start at the command:


P.S.  the system changed the file name by adding day and year. Once downloaded rename it startcnc.txt deleting the addition

Thank you for your suggestion! I have not tested it yet, but I assume it will not work as expected.
The tmp folder is purged on startup...