[linuxdc-dev] Re: [linuxsh-dev] Completion of LinuxDC merge into LinuxSH

[YAEGASHI T. <t...@ke...>]

In the article <200...@ma...>,
"M. R. Brown" <mr...@li...> wrote:

> Hi all,
> 
> Sorry for it taking so long, but I've completed the merge of LinuxDC driver
> support into LinuxSH:
> 
> - The Maple Bus driver has been shuffled around a bit to:
>   a) make it more consistent with kernel driver placement (Maple is a
>      *subsystem*, not a single driver ;-),
>   b) facilitate it's (complete) rewrite by Paul Mundt and myself.  The new
>      Maple core will be able to support a wide range of DC peripherals,
>      including MTD storage and framebuffer support for VMUs.
> - Support for Dreamcast System ASIC hardware events.  This allows us to
>   map hardware events to virtual IRQs, so that drivers can respond to
>   events as they would a normal IRQ.  Examples of this include the vsync
>   interrupt for the framebuffer, the BBA IRQ, GD-ROM DMA/Command
>   completion, etc.
> - The generic dcfb framebuffer driver has been replaced with the pvr2
>   framebuffer, in hopes of providing a standard driver for all video cards
>   based on the PowerVR2 architecture.  Acceleration (DMA blitting, etc.)
>   and better video mode support are on its way for pvr2.
> 
> There is some RTC stuff that's currently missing, but that's being rewritten
> so that I can integrate it with the new RTC changes.
> 
> Now that the basic stuff's been merged, future DC driver development will
> be folded back into LinuxSH after testing, so you'll always be able to grab
> the latest development stuff from linuxdc.org.

This surprised me a bit, because I've paied little attention to
your project's status for a long time.  Now it seems much better
than my drivers. ;-> Great work.

Please go ahead with merging your works into LinuxSH's CVS.


> I'm currently finishing up gathering enough info to write a GD-ROM driver,
> hopefully I'll be able to begin work on it this weekend.

You may know BERO has already had the GD-ROM driver ported from
NetBSD:

	http://www.geocities.co.jp/Playtown/2004/dcdev/linux/linux.html

I have another driver based on this, and a standalone Debian
system can boot on my Dreamcast with the kernel powered by it.

I'm now working on adding GD-ROM drive and ISO9660 supports to
eCos+RedBoot/Dreamcast to make it serve as a bootloader, and
planning to distribute CD-Rs at LinuxWorld Expo/Tokyo.

--
YAEGASHI Takeshi <t...@ke...>