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

Fri May 27 21:26:11 UTC 2016

Hi Pavel,
I will try to run the tests with the HDMI output before Monday.

If I get time, I’ll try the Raspberry Pi zero and also see if I can narrow down the firmware issue.

Eventually I would like to try the u-boot option as well as JTAG debugging. 

Alan

> On May 27, 2016, at 10:18 AM, Pavel Pisa <ppisa4lists at pikron.com> wrote:
> 
> Hello all,
> 
> patches seems to not change situation/make problems
> so if there is no remark I would push them on Monday.
> Do you agree?
> 
> The RPi1 and RPi2 testing state:
> 
> Tested to work on RPi1 with serial and graphic output
> and direct boot and boot over U-boot.
> Reported to work on RPi2 by Alan Cudmore with older
> firmware. Problem with newer firmware stays same
> as for RTEMS mainline.
> Tested by me to run with and without graphic output
> on QEMU but due lacks of bcm2835 timer emulation on
> the QEMU side ticker stops with print of time zero.
> 
> Best wishes,
> 
>               Pavel
> 
> On Sunday 22 of May 2016 02:13:03 ppisa4lists at pikron.com wrote:
>> From: Pavel Pisa <ppisa at pikron.com>
>> 
>> The series updates and cleans YANG Qiao GSoC 2015 work for actual
>> RTEMS 4.12 development version.
>> 
>> The changes require that VideoCore firmware is running even
>> if video output is not used because mailbox based communication
>> with VideoCore is used to obtain SD command line parameters
>> passed to the RTEMS application image and to limit RTEMS RAM
>> workarea to not go beyond VideoCore assigned memory start.
>> 
>> The two options configurable by "cmdline.txt" file read
>> and made accessible by VideoCore firmware are present
>> 
>>  --video=
>>     possible values
>>         auto  - select mode automatically according to the connected
>> monitor off  (or none) - disable video support
>>         width x height with optional bpp - for example 800x600 or
>> 800x600-32
>> 
>>  --console=
>>     fbcons - redirect RTEMS console output to the connected monitor
>>         if --video= is not specified/enabled or monitor is not detected
>>         then output stays to be connected to the UART
>> 
>> Typical "cmdline.txt" content for testing
>> 
>>  --video=auto --console=fbcons
>> 
>> WARNING: the used VideoCore service for command line arguments retrieval
>>         returns only these arguments setup in "cmdline.txt".
>>         Arguments provided to U-boot or other loader are ignored.
>> 
>> Code has been tested or Raspberry Pi 1 with U-boot + TFTP and with direct
>> boot from SD card with and without monitor connected. Code tested to
>> not break standard serial console output for Raspberry Pi 2 on QEMU.
>> Graphic output under QEMU results write abort because QEMU reported
>> framebuffer size is not completely accessible, only 400 rows from 640x480
>> reported screen works for the given mode.
>> 
>> [PATCH v2] Updates to v2 version
>>  - formatting of newly introduced files normalized by rtems.uncrustify
>>  - incorrect clean after release spot by Gedare Bloom corrected
>>  - HDMI monitor presence test commented (solution is not ideal but works
>>    and if some more straightforward solution is found in future,
>>    then it can be replaced)
>>  - atomic flag used to ensure framebuffer single open only
>>    is left in a place
>>  - more cleanups and adjustment of compatibility with RPi2
>> 
>> Pavel Pisa (4):
>>  arm/raspberrypi: cmdline enhancement and early access workaround.
>>  arm/raspberrypi: ensure that correct RPI_PERIPHERAL_BASE is provided
>>    by raspberrypi.h
>>  arm/raspberrypi: Raspberry Pi v2 ALLOCATE_BUFFER VC4 operation returns
>>    direct address.
>>  arm/raspberrypi: move MMU in front of application image to respect
>>    variable memory size.
>> 
>> YANG Qiao (3):
>>  arm/raspberrypi: add VideoCore framebuffer without initialization
>>  arm/raspberrypi: add video outchar support for rpi bsp
>>  arm/raspberrypi: add fbcons support for rpi bsp
>> 
>> c/src/lib/libbsp/arm/raspberrypi/Makefile.am       |   13 +-
>> .../arm/raspberrypi/console/console-config.c       |   12 +-
>> .../arm/raspberrypi/console/console_select.c       |  113 +
>> c/src/lib/libbsp/arm/raspberrypi/console/fb.c      |  409 ++
>> c/src/lib/libbsp/arm/raspberrypi/console/fbcons.c  |  177 +
>> c/src/lib/libbsp/arm/raspberrypi/console/fbcons.h  |   47 +
>> .../lib/libbsp/arm/raspberrypi/console/font_data.h | 4639
>> ++++++++++++++++++++ c/src/lib/libbsp/arm/raspberrypi/console/outch.c   | 
>> 463 ++
>> c/src/lib/libbsp/arm/raspberrypi/gpio/rpi-gpio.c   |    1 +
>> c/src/lib/libbsp/arm/raspberrypi/include/bsp.h     |    9 +
>> .../libbsp/arm/raspberrypi/include/raspberrypi.h   |    1 +
>> c/src/lib/libbsp/arm/raspberrypi/include/rpi-fb.h  |   54 +
>> c/src/lib/libbsp/arm/raspberrypi/misc/mailbox.c    |    1 +
>> c/src/lib/libbsp/arm/raspberrypi/misc/timer.c      |    1 +
>> c/src/lib/libbsp/arm/raspberrypi/misc/vc.c         |    4 +
>> c/src/lib/libbsp/arm/raspberrypi/preinstall.am     |    8 +
>> .../arm/raspberrypi/startup/bspgetworkarea.c       |   77 +
>> .../libbsp/arm/raspberrypi/startup/bspstarthooks.c |    4 +
>> c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c |   12 +-
>> c/src/lib/libbsp/arm/raspberrypi/startup/linkcmds  |    6 +-
>> c/src/lib/libbsp/arm/raspberrypi/startup/mminit.c  |   31 +
>> 21 files changed, 6071 insertions(+), 11 deletions(-)
>> create mode 100644
>> c/src/lib/libbsp/arm/raspberrypi/console/console_select.c create mode
>> 100644 c/src/lib/libbsp/arm/raspberrypi/console/fb.c
>> create mode 100644 c/src/lib/libbsp/arm/raspberrypi/console/fbcons.c
>> create mode 100644 c/src/lib/libbsp/arm/raspberrypi/console/fbcons.h
>> create mode 100644 c/src/lib/libbsp/arm/raspberrypi/console/font_data.h
>> create mode 100644 c/src/lib/libbsp/arm/raspberrypi/console/outch.c
>> create mode 100644 c/src/lib/libbsp/arm/raspberrypi/include/rpi-fb.h
>> create mode 100644
>> c/src/lib/libbsp/arm/raspberrypi/startup/bspgetworkarea.c create mode
>> 100644 c/src/lib/libbsp/arm/raspberrypi/startup/mminit.c