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 (file)
--- 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_PRODREV        (CPU_MASK_PXA_PRODID | CPU_MASK_PXA_REVID)
 
-#define        CPU_MASK_PXA_PRODID     0x3f0
 #define        CPU_VALUE_PXA25X        0x100
 #define        CPU_VALUE_PXA27X        0x110
 
@@ -51,6 +53,11 @@ int cpu_is_pxa27x(void)
        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)
 {

diff --git a/arch/arm/include/asm/arch-pxa/pxa.h b/arch/arm/include/asm/arch-pxa/pxa.h
index 49c6552..b67d8f2 100644 (file)
--- a/arch/arm/include/asm/arch-pxa/pxa.h
+++ b/arch/arm/include/asm/arch-pxa/pxa.h
@@ -22,8 +22,21 @@
 #ifndef        __PXA_H__
 #define        __PXA_H__
 
+#define PXA255_A0      0x00000106
+#define PXA250_C0      0x00000105
+#define PXA250_B2      0x00000104
+#define PXA250_B1      0x00000103
+#define PXA250_B0      0x00000102
+#define PXA250_A1      0x00000101
+#define PXA250_A0      0x00000100
+#define PXA210_C0      0x00000125
+#define PXA210_B2      0x00000124
+#define PXA210_B1      0x00000123
+#define PXA210_B0      0x00000122
+
 int cpu_is_pxa25x(void);
 int cpu_is_pxa27x(void);
+uint32_t pxa_get_cpu_revision(void);
 void pxa2xx_dram_init(void);
 
 #endif /* __PXA_H__ */