[U-Boot] [PATCH] imx: mx27 implement get_cpu_rev

[Peng Fan]

Write a function named get_cpu_rev to make it support
runtime checking using "is_cpu_type(MXC_CPU_xx)".

Also introduce a macro MXC_CPU_MX27 with value 0x27.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
---

Note:
 Based on https://patchwork.ozlabs.org/patch/505618/ to support runtime
 check patch.

 arch/arm/cpu/arm926ejs/mx27/generic.c | 6 ++++++
 arch/arm/include/asm/arch-imx/cpu.h   | 1 +
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c
index 5ee9f07..b713c84 100644
--- a/arch/arm/cpu/arm926ejs/mx27/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx27/generic.c
@@ -12,6 +12,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/gpio.h>
+#include <asm/imx-common/sys_proto.h>
 #ifdef CONFIG_MXC_MMC
 #include <asm/arch/mxcmmc.h>
 #endif
@@ -159,6 +160,11 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
 }
 
 
+u32 get_cpu_rev(void)
+{
+	return MXC_CPU_MX27 << 12;
+}
+
 #if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo (void)
 {
diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index 71208aa..be13b96 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -6,6 +6,7 @@
 
 #define MXC_CPU_MX23		0x23
 #define MXC_CPU_MX25		0x25
+#define MXC_CPU_MX27		0x27
 #define MXC_CPU_MX28		0x28
 #define MXC_CPU_MX31		0x31
 #define MXC_CPU_MX35		0x35
-- 
1.8.4