On Aug 6, 2008, at 3:41 PM, Wolfgang Denk wrote:
In message <D5CA3AB9-3AE3-439C-A169- F8CD26D4A320@kernel.crashing.org> you wrote:
Book-E will need different code for handing IVPR/IVORs than classic.
Umm... the exception code itself may be different, but does this imply that the code used to copy / relocate the exception handlers to low mem must be different, too?
the copying bit should be do-able in generic code.
74xx_7xx/mpc512x/mpc5xx/mpc8xx/mpc8220/mpc824x/mpc83xx/mpc86xx:
copy from [_start, _end_of_vectors] to 0x100
4xx/85xx:
copy from [_start_of_vectors, _end_of_vectors] to 0x100
OK, that's what I exoected. So we should plan to factor out this part of code one day.
Maybe. But then, these can use exception vectors at low mem, too, right?
They can, but it has to be setup.
What is Linux doing?
don't follow the question.. what is linux doing with what?
Where is Linux setting up exception vectors on these systems?
they are at 0 for 6xx/8xx/40x systems. They can be anywhere on 85xx/ 44x (and we take advantage of this).
- k