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authorKrzysztof Hałasa <khc@pm.waw.pl>2009-04-28 14:48:43 +0200
committerKrzysztof Hałasa <khc@pm.waw.pl>2009-05-23 23:16:21 +0200
commit8a4fe82497a52b6da45b5b3179cce7dd6a28a532 (patch)
treedfdc254874b81982860bb4b57c732d446949c505 /arch/arm/mach-ixp4xx
parent2e418400728a9fcacb2ab75f0547584a56b8a584 (diff)
IXP42x: Identify Intel IXP425 rev. A0 processors.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Diffstat (limited to 'arch/arm/mach-ixp4xx')
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/cpu.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/mach-ixp4xx/include/mach/cpu.h b/arch/arm/mach-ixp4xx/include/mach/cpu.h
index def7773be67c..b2ef65db0e91 100644
--- a/arch/arm/mach-ixp4xx/include/mach/cpu.h
+++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h
@@ -26,6 +26,8 @@
#define IXP46X_PROCESSOR_ID_VALUE 0x69054200 /* including IXP455 */
#define IXP46X_PROCESSOR_ID_MASK 0xfffffff0
+#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
+ IXP42X_PROCESSOR_ID_VALUE)
#define cpu_is_ixp42x() ((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
IXP42X_PROCESSOR_ID_VALUE)
#define cpu_is_ixp43x() ((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
@@ -35,8 +37,11 @@
static inline u32 ixp4xx_read_feature_bits(void)
{
- unsigned int val = ~*IXP4XX_EXP_CFG2;
+ u32 val = ~*IXP4XX_EXP_CFG2;
+ if (cpu_is_ixp42x_rev_a0())
+ return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
+ IXP4XX_FEATURE_AES);
if (cpu_is_ixp42x())
return val & IXP42X_FEATURE_MASK;
if (cpu_is_ixp43x())