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authorAlbert Herranz <albert_herranz@yahoo.es>2009-12-12 09:31:54 +0300
committerGrant Likely <grant.likely@secretlab.ca>2009-12-13 08:24:32 +0300
commitc5df7f775148723de39274537a886e9502eef336 (patch)
tree548acbcef58b1d60308f7e7cd894d514583895a2 /arch/powerpc/mm/init_32.c
parentde32400dd26e743c5d500aa42d8d6818b79edb73 (diff)
downloadlinux-c5df7f775148723de39274537a886e9502eef336.tar.xz
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.c5
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;