[PATCH v2 0/7] Raspberry Pi VideoCore support for console on HDMI output

Pavel Pisa ppisa4lists at pikron.com
Tue May 31 09:59:41 UTC 2016

Hello Alan,

thanks much for testing.

I have rebased RPi related changes to the actual master
head and rebuild toolchain to Newlib and
GCC 6-20160526. The test on RPi1 from U-boot goes
OK so I have pushed changes to the master.

On Monday 30 of May 2016 23:04:36 Alan Cudmore wrote:
> Here are the tests I was able to run:
> In general, the HDMI console works on the Model A+ ( should also work on
> the Model B/B+ ) and the Pi Zero.
> I still have firmware issues with the Pi 2, where it only seems to work
> with my older RTEMS SD boot disk. To make matters worse, I’m not sure what
> version of the firmware that is.

This would worth to add debug prints and find where boot stucks.
I can prepare that on my branch or GitHub but I have this week
so busy that I do not get to such reparation now.

> With the old firmware, the Pi2 image boots fine with the UART, and it
> almost works with the HDMI console.. The console output seems to get
> corrupted ( see attached picture )

This looks like some memory corruption or missing flush
of data from the cache. May be some attributes for framebuffer
mapping by MMU should be changed. I try to think about that.

> I have also attached a PDF that hopefully describes the tests I did.
> I’m confident that things are working well with the single core Pi models
> with the latest firmware and console HDMI output. I think it’s worth
> getting the code in and trying to solve the Pi2 issues.

Thanks again and best wishes,


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