On Wed, Dec 3, 2008 at 11:43 AM, Myles Watson <[EMAIL PROTECTED]> wrote:
> A question before the code: > 1. Can anyone enumerate all the fixed resources that should be included in > QEMU? > Currently I have: > - DRAM (first 640K and 0xc0000-TOP-768K) Is this necessary? > - I/O first 0x400 in southbridge > - VGA 0xa0000-0xc0000 > - APIC at 0xfec00000 and 0xfee00000 > - ROM at 0xfff80000 This looks normal. You could put the first 0x1000 in the SB IMO. > > Side note: Only the lowest and highest fixed addresses matter in my code. > The others get ignored. I think it's too much pain to try to interleave > them to use the space between 0xfee00000 and 0xfff80000, for example. This is probably ok for a normal system. There is a problem with this if a device is already setup and should be treated as fixed but if that is the case it should be seup in the dts.... > /* Initialize constraints to maximum size. */ > > limits.pref.base = 0; > limits.pref.limit = 0xfffffffffffffffULL; > limits.io.base = 0; > limits.io.limit = 0xfffffffffffffffULL; > limits.mem.base = 0; > limits.mem.limit = 0xfffffffffffffffULL; The limit for memory and prefetch should be the same since they are in the same address space. For mem.base I assume it gets set from TOM (for K8) somehow? Marc -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
