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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-11-04 10:52:28 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-11-06 17:45:32 +0000
commitb1cce6b1b2785fd61454b47ceacb461815407662 (patch)
tree90a877fcab8defd4a6770aaab4dcb3de6e69ba04 /arch/arm/include/asm/system.h
parentab4f2ee130d5ffcf35616e1f5c6ab75af5b463b6 (diff)
[ARM] mm: fix page table initialization
As a result of the ptebits changes, we ended up marking device mappings as normal memory on ARMv7 CPUs, resulting in undesirable behaviour with serial ports and the like. While reviewing the section mapping table entries, other errors in the memory type settings for devices were detected and confirmed to prevent Xscale3 platforms booting. Tested on: OMAP34xx (ARMv7), OMAP24xx (ARMv6), OMAP16xx (ARM926T, ARMv5), PXA311 (Xscale3), PXA272 (Xscale), PXA255 (Xscale), IXP42x (Xscale), S3C2410 (ARM920T, ARMv4T), ARM720T (ARMv4T) StrongARM-110 (ARMv4) Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Tested-by: Mike Rapoport <mike@compulab.co.il> Tested-by: Ben Dooks <ben-linux@fluff.org> Tested-by: Anders Grafström <grfstrm@users.sourceforge.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/system.h')
-rw-r--r--arch/arm/include/asm/system.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 7aad78420f1..568020b34e3 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -42,6 +42,10 @@
#define CR_U (1 << 22) /* Unaligned access operation */
#define CR_XP (1 << 23) /* Extended page tables */
#define CR_VE (1 << 24) /* Vectored interrupts */
+#define CR_EE (1 << 25) /* Exception (Big) Endian */
+#define CR_TRE (1 << 28) /* TEX remap enable */
+#define CR_AFE (1 << 29) /* Access flag enable */
+#define CR_TE (1 << 30) /* Thumb exception enable */
/*
* This is used to ensure the compiler did actually allocate the register we