Add function which return CPU model and revision which can be used for
cpu detection.
Signed-off-by: Lukasz Dalek <luk0...@gmail.com>
---
Changes for v5:
- Changed commit message
arch/arm/cpu/pxa/cpuinfo.c | 11 +++++++++--
arch/arm/include/asm/arch-pxa/pxa.h | 13 +++++++++++++
2 files changed, 22 insertions(+), 2 deletions(-)
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_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
--- 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__ */
--
1.7.8.6
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