Re: [PATCH] Fix vgacon oops on 64-bit

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On Mon, Jan 30, 2006 at 08:33:21AM -0700, Matt Porter wrote:

> Although I'm not running a VGA card, I noticed this building
> a working malta 32-bit defconfig (vgacon enabled) for 64-bit.
> Without it, the vgacon probe will access unmapped space when
> looking to see if a vga card is present.
> 
> Signed-off-by: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
> 
> diff --git a/include/asm-mips/vga.h b/include/asm-mips/vga.h
> index ca5cec9..1390ab6 100644
> --- a/include/asm-mips/vga.h
> +++ b/include/asm-mips/vga.h
> @@ -13,7 +13,11 @@
>   *	access the videoram directly without any black magic.
>   */
>  
> +#ifdef CONFIG_64BIT
> +#define VGA_MAP_MEM(x)	(0xffffffffb0000000UL + (unsigned long)(x))
> +#else
>  #define VGA_MAP_MEM(x)	(0xb0000000L + (unsigned long)(x))
> +#endif

Looks like driving out the devil with beelzebub.  The 0xb0000000 address
is totally platform specific and nobody ever noticed ...

  Ralf


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