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| author | Albert Herranz <albert_herranz@yahoo.es> | 2009-12-12 06:31:54 +0000 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-12-12 22:24:32 -0700 |
| commit | c5df7f775148723de39274537a886e9502eef336 (patch) | |
| tree | 548acbcef58b1d60308f7e7cd894d514583895a2 /arch/powerpc/mm/init_32.c | |
| parent | de32400dd26e743c5d500aa42d8d6818b79edb73 (diff) | |
| download | lwn-c5df7f775148723de39274537a886e9502eef336.tar.gz lwn-c5df7f775148723de39274537a886e9502eef336.zip | |
powerpc: allow ioremap within reserved memory regions
Add a flag to let a platform ioremap memory regions marked as reserved.
This flag will be used later by the Nintendo Wii support code to allow
ioremapping the I/O region sitting between MEM1 and MEM2 and marked
as reserved RAM in the patch "wii: use both mem1 and mem2 as ram".
This will no longer be needed when proper discontig memory support
for 32-bit PowerPC is added to the kernel.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch/powerpc/mm/init_32.c')
| -rw-r--r-- | arch/powerpc/mm/init_32.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 703c7c2e0d9f..4ec900af332f 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -82,6 +82,11 @@ extern struct task_struct *current_set[NR_CPUS]; int __map_without_bats; int __map_without_ltlbs; +/* + * This tells the system to allow ioremapping memory marked as reserved. + */ +int __allow_ioremap_reserved; + /* max amount of low RAM to map in */ unsigned long __max_low_memory = MAX_LOW_MEM; |