Re: [Qemu-devel] sparc32_dma: correctly initialize ledma base address

[Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>]

On 15/08/11 16:38, Bob Breuer wrote:

> Depends on the rom.  The SS-5 rom always sets it correctly, whereas the
> SS-20 rom only sets it when you do "boot net".  Also, this is just the
> top 8 bits of the address.  The DMA2 documentation[1] for E_BASE_ADDR
> states that these upper address bits default to 0xff, even though it
> seems to incorrectly define it as bits 7:0 in the register instead of
> 31:24.

Nice one - looks like I missed this when reading the documentation. At 
least the choice of default address now makes sense.

> If you follow Artyom's blog, at [2] it was assumed that the bogus dbri
> device was the culprit (which is also why I went down the path of
> implementing the dbri device), when in reality, the selftest failure
> was preventing "boot net" from running and fixing the ledma register
> settings.

Okay - I think I see ;)  In that case, I'd say this patch should be 
applied if Blue hasn't already done it (*sigh* I really miss the git web 
interface on qemu.org).


ATB,

Mark.

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