[OpenBIOS] [PATCH 00/16] Switch to standards-compliant Forth console from C console

Blue Swirl blauwirbel at gmail.com
Sun Mar 10 20:31:10 CET 2013


On Sun, Mar 10, 2013 at 6:16 PM, Blue Swirl <blauwirbel at gmail.com> wrote:
> On Sun, Mar 10, 2013 at 4:50 PM, Mark Cave-Ayland
> <mark.cave-ayland at ilande.co.uk> wrote:
>> As mentioned in my previous email on-list, OpenBIOS currently contains two
>> consoles - a C based console and a Forth based console. The Forth based console
>> is currently broken, but is more feature complete than the C console, whilst also
>> being more portable across different architectures.
>>
>> This patchset performs the following functions:
>>
>> - Fix various bugs in the Forth console
>> - Optimise performance using low-level C graphics routines
>> - Add simple IEEE1275-like initialisers for TCX and VGA graphics
>> - Switch TCX and VGA drivers over to use the new console using the standard
>>   is-install word
>>
>> Once this patchset is committed, a further patchset will follow to remove all of
>> the duplicate C console code, remove packages/video.c and unify the console
>> input/routines into libopenbios.
>
> I'm getting these warnings during build, perhaps something is not correct:
>   LINK  openbios-builtin.elf
> libopenbios.a(console_common.o): warning: multiple common of `video'
> libsparc32.a(openbios.o): warning: previous common is here
> libopenbios.a(video_common.o): warning: multiple common of `video'
> libsparc32.a(openbios.o): warning: previous common is here
> libpackages.a(video.o): warning: multiple common of `video'
> libsparc32.a(openbios.o): warning: previous common is here
>   GEN   openbios-builtin.elf.syms
>
> Based on a quick Debian 3.1 CDROM boot test, it looks like scrolling
> and clear screen does not work at all. Text is also offset by one line
> down and one column right.

NetBSD 4.0 also suffers from lack of scrolling and clear screen, but
characters are positioned correctly.

On the positive side, reverse text now works and I guess the screen
flashes show BEL handling.

>
> Some usual messages (CPUs, UUID) are not going to screen but that's probably OK.
>
>>
>>
>> Mark Cave-Ayland (16):
>>   display.fs: Fix up default-font word.
>>   display.fs: Fix fb8-delete-lines within the inbuilt Forth terminal
>>     emulator.
>>   terminal.fs: Fix linefeeds on the bottom line of the Forth console.
>>   terminal.fs: Fix backspace sequence in Forth terminal.
>>   video: Create new video_common.c file for shared video primitive
>>     routines.
>>   video_common.c: Move primitive graphic operations into
>>     libopenbios/video_common.c.
>>   pci: Modify PCI display devices so that open and close words are not
>>     created     automatically during initialisation.
>>   video: Create tcx.fs and vga.fs to simulate Fcode video
>>     initialisation code.
>>   display.fs: pass the colour depth in bytes to the Forth terminal
>>     routines.
>>   video_common.c: create low-level video_mask_blit() function.
>>   video_common.c: create low-level video_invert_rect() function.
>>   display.fs: Fix fb8 routines to work with bit depths > 8.
>>   video_common.c: create low-level video_fill_rect() function.
>>   display.fs: optimise scrolling by copying/deleting multiple scanlines
>>     at once.
>>   display.fs: Add vertical font-spacing as per the existing C console
>>     implementation.
>>   video: switch VGA and TCX drivers over to Forth console using
>>     is-install.
>>
>>  openbios-devel/arch/sparc32/console.c       |   12 -
>>  openbios-devel/arch/sparc32/openbios.c      |    2 +-
>>  openbios-devel/drivers/build.xml            |    2 +
>>  openbios-devel/drivers/pci.c                |   14 +-
>>  openbios-devel/drivers/pci.h                |    1 +
>>  openbios-devel/drivers/sbus.c               |    2 +
>>  openbios-devel/drivers/tcx.fs               |   13 +
>>  openbios-devel/drivers/vga.fs               |   13 +
>>  openbios-devel/drivers/vga_vbe.c            |    2 +-
>>  openbios-devel/forth/device/display.fs      |  172 +++++------
>>  openbios-devel/forth/device/font.fs         |    4 +
>>  openbios-devel/forth/device/terminal.fs     |   10 +-
>>  openbios-devel/include/libopenbios/video.h  |   24 ++
>>  openbios-devel/include/packages/video.h     |    6 +-
>>  openbios-devel/libopenbios/build.xml        |    1 +
>>  openbios-devel/libopenbios/console_common.c |    1 +
>>  openbios-devel/libopenbios/video_common.c   |  444 +++++++++++++++++++++++++++
>>  openbios-devel/packages/video.c             |  279 +----------------
>>  18 files changed, 607 insertions(+), 395 deletions(-)
>>  create mode 100644 openbios-devel/drivers/tcx.fs
>>  create mode 100644 openbios-devel/drivers/vga.fs
>>  create mode 100644 openbios-devel/include/libopenbios/video.h
>>  create mode 100644 openbios-devel/libopenbios/video_common.c
>>
>> --
>> 1.7.10.4
>>
>>
>> --
>> OpenBIOS                 http://openbios.org/
>> Mailinglist:  http://lists.openbios.org/mailman/listinfo
>> Free your System - May the Forth be with you



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