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powerpc/kexec: Add support for FSL-BookE

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This adds support kexec on FSL-BookE where the MMU can not be simply
switched off. The code borrows the initial MMU-setup code to create the
identical mapping mapping. The only difference to the original boot code
is the size of the mapping(s) and the executeable address.
The kexec code maps the first 2 GiB of memory in 256 MiB steps. This
should work also on e500v1 boxes.
SMP support is still not available.

(Kumar: Added minor change to build to ifdef CONFIG_PPC_STD_MMU_64 some
code that was PPC64 specific)

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Sebastian Andrzej Siewior
2010-04-04 22:19:03 +02:00
committed by Kumar Gala
parent 7c08ce718f
commit b3df895aeb
6 changed files with 74 additions and 1 deletions
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2
arch/powerpc/kernel/head_fsl_booke.S
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@@ -95,7 +95,9 @@ _ENTRY(_start);
_ENTRY(__early_start)
#define ENTRY_MAPPING_BOOT_SETUP
#include "fsl_booke_entry_mapping.S"
#undef ENTRY_MAPPING_BOOT_SETUP
/* Establish the interrupt vector offsets */
SET_IVOR(0, CriticalInput);