Re: Problems implementing (netboot) tagged image support in grub

[Hans-Peter Jansen]

On Sunday 27 July 2003 19:38, me wrote:
>
> Moving the first 512 bytes from MULTIBOOT_SEARCH to 0x10000
> succeeded. Moving the first segment (3584 bytes, also completely
> contained in buffer) to 0x10400 failed so far with a vmware tripple
> fault error, no matter if I use
>       grub_memmove(RAW_ADDR(cur_addr), data, i)
> or a self written copy loop. Crash happens repeatable at 0x10b01.
>
> Does somebody has an idea, what's the problem to use this memory
> around 0x10b00? Is there any grub memory layout documentation
> available?

Sorry, found it. Look's like I'm smashing parts of stage2 here. Thus, it 
seems to require to save that segment temporary (probably @ 0x90000), 
and copy it back later. How do I ensure, that this action is save at 
some point? Looks like something the like is done for linux already in 
asm.S.

> Again, any enlightenment is highly appreciated.
>
> TIA,
> Pete