Wolfgang Denk wd@denx.de wrote on 06/10/2009 10:58:53:
Dear Peter Tyser,
In message 1254784811.24664.968.camel@localhost.localdomain you wrote:
- is just a small fix the the existing asm reloc functions. Pretty much ready but needs some linker tweeks it seems. No idea if other boards than 85xx also needs a linker tweak or not.
It looks like 85xx is the only arch that needed linker script tweaks. I just submitted some patches a bit ago.
I think this code is too complex. Eventually we could hard-wire something like ". = 0x40000" or similar for a fixed location of the (pre-relocation) bss on all 85xx/86xx systems.
- is 1 in C and some common supporting asm for ppc. Any idea were to put common asm files for ppc? I was hoping I could get away with just 83xx and the rest could be done later by interested parties?
Assuming the 85xx link script changes are accepted, what's the gameplan now? #1 is pretty trivial (the original patch that spawned this thread with slight tweaks) and should be easy to get in this merge window. That would get us to the point that relocation is fully functional, including non-relocation of NULL pointers.
I think this is a nice and realistic goal for the current release.
Yes, then it works and the C-version can come on top.
#2 looks more involved and prone to errors as it requires some shuffling of registers in assembly for all architectures. Are we aiming for getting #2 across all architectures in this window? I should be able to implement and test it on 85xx, 86xx, and 44x, and Jocke's tested on 83xx. I don't think I could do the rest of the arches by the end of this week though. Any other takers? Save it for the next merge window?
I guess this is for next version.
Yes, I am getting behind due to some 8xx MMU problems. If I am really lucky I may be able to do 83xx only, but my code base is a mess ATM :(
Um... jut to be sure - I understand that by "all architectures" above you actually mean "all Power architecture CPU families", i. e. you don't include the needed cleanup for ARM, MIPs, etc. here (yet) ?
I sure hope so :)