[OLPC-devel] Re: New buildrom is ready

[Ronald G Minnich]

Jordan Crouse wrote:
> On 14/08/06 11:16 +0100, David Woodhouse wrote:
> 
>>On Sun, 2006-08-13 at 19:32 -0600, Ronald G Minnich wrote:
>>
>>>Or if we should just do this in linuxbios, and use the linuxbios i2c code? 
>>
>>That makes sense -- it's only a single register write to enable the
>>DCON.
>>
>>However, we also want the framebuffer device in the Linux kernel to know
>>that it's there, so that it can pick the special 1200x900 at 50 mode
>>instead of a normal CRT mode. Can we just indicate its existence in the
>>OpenFirmware device tree? Oh, wait.... :)
> 
> 
> I2C + NAND in the kernel will add ~60k, FYI.
> 
> But I just had a thought - Why not probe the DCON in LinuxBIOS (using the
> existing smbus code), and set a byte somewhere in the PCI config space if
> it exists?  That way, we could communicate the existance of the DCON to the
> kernel without going out of our way to do anything stupid with virtual 
> registers.
> 
> Jordan
> 

we can do that. But it's our kernel and bios -- can't we just put some 
info at page zero (or mod the command line) and leave it at that?

ron