From 29a9162ca14317aab62156f5acf5b21e74198c62 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Tue, 25 Dec 2007 13:11:07 +0000
Subject: [PATCH]  added framework for chip detection on the ifxmips

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9925 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../ifxmips/files/arch/mips/ifxmips/board.c   | 23 +++++++++++++++++++
 .../ifxmips/files/arch/mips/ifxmips/setup.c   |  6 +++--
 .../files/include/asm-mips/ifxmips/ifxmips.h  |  6 +++++
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/board.c b/target/linux/ifxmips/files/arch/mips/ifxmips/board.c
index 6df17d8556..05a0715d1f 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/board.c
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/board.c
@@ -33,9 +33,19 @@
 #include <asm/time.h>
 #include <asm/irq.h>
 #include <asm/io.h>
+#include <asm/ifxmips/ifxmips.h>
 
 #define MAX_IFXMIPS_DEVS		5
 
+#define BOARD_DANUBE			"Danube"
+#define BOARD_DANUBE_CHIPID		0x10129083
+
+#define BOARD_TWINPASS			"Twinpass"
+
+#define BOARD_DANUBE			"Danube"
+
+static unsigned int chiprev;
+
 static struct platform_device *ifxmips_devs[MAX_IFXMIPS_DEVS];
 
 static struct platform_device ifxmips_led[] =
@@ -62,6 +72,19 @@ static struct platform_device ifxmips_mii[] =
 	},
 };
 
+const char*
+get_system_type (void)
+{
+	chiprev = readl(IFXMIPS_MPS_CHIPID);
+	switch(chiprev)
+	{
+	case BOARD_DANUBE_CHIPID:
+		return BOARD_DANUBE;
+	}
+
+	return BOARD_SYSTEM_TYPE;
+}
+
 int __init ifxmips_init_devices(void)
 {
 	/*
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/setup.c b/target/linux/ifxmips/files/arch/mips/ifxmips/setup.c
index 8aac788d74..4c25b585f5 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/setup.c
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/setup.c
@@ -146,7 +146,7 @@ plat_timer_setup (struct irqaction *irq)
 	writel(0xffff, IFXMIPS_GPTU_GPT_CAPREL);
 	writel(0x80C0, IFXMIPS_GPTU_GPT_T6CON);
 
-	retval = setup_irq(IFXMIPS_TIMER6_INT, &hrt_irqaction);
+	//retval = setup_irq(IFXMIPS_TIMER6_INT, &hrt_irqaction);
 
 	if (retval)
 	{
@@ -154,11 +154,13 @@ plat_timer_setup (struct irqaction *irq)
 	}
 }
 
+extern const char* get_system_type (void);
+
 void __init
 plat_mem_setup (void)
 {
 	u32 status;
-	prom_printf("This %s has a cpu rev of 0x%X\n", BOARD_SYSTEM_TYPE, ifxmips_get_cpu_ver());
+	prom_printf("This %s has a cpu rev of 0x%X\n", get_system_type(), ifxmips_get_cpu_ver());
 
 	//TODO WHY ???
 	/* clear RE bit*/
diff --git a/target/linux/ifxmips/files/include/asm-mips/ifxmips/ifxmips.h b/target/linux/ifxmips/files/include/asm-mips/ifxmips/ifxmips.h
index 21d72a2b9e..cedab2c995 100644
--- a/target/linux/ifxmips/files/include/asm-mips/ifxmips/ifxmips.h
+++ b/target/linux/ifxmips/files/include/asm-mips/ifxmips/ifxmips.h
@@ -426,4 +426,10 @@
 #define IFXMIPS_FUSE_BASE_ADDR	(KSEG1 + 0x1F107354)
 
 
+/*------------ MPS */
+
+#define IFXMIPS_MPS_BASE_ADDR	(KSEG1 + 0x1F107000)
+
+#define IFXMIPS_MPS_CHIPID		((u32*)(IFXMIPS_MPS_BASE_ADDR + 0x0344))
+
 #endif