pxa: Add code to examine cpu model and revision
Add function which return CPU model and revision which can be used for
cpu detection.
Signed-off-by: Lukasz Dalek <luk0104@gmail.com>
diff --git a/arch/arm/cpu/pxa/cpuinfo.c b/arch/arm/cpu/pxa/cpuinfo.c
index f1cdd40..bab6340 100644
--- a/arch/arm/cpu/pxa/cpuinfo.c
+++ b/arch/arm/cpu/pxa/cpuinfo.c
@@ -24,9 +24,11 @@
#include <errno.h>
#include <linux/compiler.h>
-#define CPU_MASK_PXA_REVID 0x00f
+#define CPU_MASK_PXA_PRODID 0x000003f0
+#define CPU_MASK_PXA_REVID 0x0000000f
-#define CPU_MASK_PXA_PRODID 0x3f0
+#define CPU_MASK_PRODREV (CPU_MASK_PXA_PRODID | CPU_MASK_PXA_REVID)
+
#define CPU_VALUE_PXA25X 0x100
#define CPU_VALUE_PXA27X 0x110
@@ -51,6 +53,11 @@
return id == CPU_VALUE_PXA27X;
}
+uint32_t pxa_get_cpu_revision(void)
+{
+ return pxa_get_cpuid() & CPU_MASK_PRODREV;
+}
+
#ifdef CONFIG_DISPLAY_CPUINFO
static const char *pxa25x_get_revision(void)
{