Jeremy Jackson wrote:
>Yes that's the one.
>
>Wouldnt' it be advantageous to be able to execute from high
>alias while setting up ram? Then you could uncompress directly
>on top of yourself... I mean to the 0xf000-0xffff address,
>like the vendor bios does to shadow itsself. No need to
>move yourself around. Everyone (ie linux kernel) expects
>to leave that area alone.
>
I don't think it is viable for DoC. To access DoC, you have two choices
1. Mapping DoC near 4GB, to access DoC you have to enter protect or
big real mode.
2. Mapping DoC near 1MB, it is not possible to do the "read from
flash write to DRAM" trick
since every command transaction need both read and write to goto
flash.
But it is possible to stay CS = 4GB - 64KB and DS = 1MB - 64KB and
shadow LinuxBIOS (ES) to
somewhere below 1MB.
Ollie
