[ARM] 4311/1: ixp4xx: add KIXRP435 platform

Add Intel KIXRP435 Reference Platform based on IXP43x processor.
Fixed after review : access to cp15 removed in identification functions,
used access to global processor_id instead

Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com>
Signed-off-by: Ruslan  Sushko <rsushko@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

5 files changed, 40 insertions, 12 deletions

diff --git a/include/asm-arm/arch-ixp4xx/entry-macro.S b/include/asm-arm/arch-ixp4xx/entry-macro.S
index dadb568..f144a00 100644
--- a/include/asm-arm/arch-ixp4xx/entry-macro.S
+++ b/include/asm-arm/arch-ixp4xx/entry-macro.S
@@ -31,9 +31,9 @@
 
 1001:
 		/*
-		 * IXP465 has an upper IRQ status register
+		 * IXP465/IXP435 has an upper IRQ status register
 		 */
-#if defined(CONFIG_CPU_IXP46X)
+#if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X)
 		ldr	\irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET)
 		ldr	\irqstat, [\irqstat]		@ get upper interrupts
 		mov	\irqnr, #63
diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h
index 88fd087..24bc588 100644
--- a/include/asm-arm/arch-ixp4xx/hardware.h
+++ b/include/asm-arm/arch-ixp4xx/hardware.h
@@ -17,8 +17,8 @@
 #ifndef __ASM_ARCH_HARDWARE_H__
 #define __ASM_ARCH_HARDWARE_H__
 
-#define PCIBIOS_MIN_IO			0x00001000
-#define PCIBIOS_MIN_MEM			0x48000000
+#define PCIBIOS_MIN_IO		0x00001000
+#define PCIBIOS_MIN_MEM		(cpu_is_ixp43x() ? 0x40000000 : 0x48000000)
 
 /*
  * We override the standard dma-mask routines for bouncing.
diff --git a/include/asm-arm/arch-ixp4xx/io.h b/include/asm-arm/arch-ixp4xx/io.h
index a41ba22..b8b3cbc 100644
--- a/include/asm-arm/arch-ixp4xx/io.h
+++ b/include/asm-arm/arch-ixp4xx/io.h
@@ -61,7 +61,7 @@ extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data);
 static inline void __iomem *
 __ixp4xx_ioremap(unsigned long addr, size_t size, unsigned long flags)
 {
-	if((addr < 0x48000000) || (addr > 0x4fffffff))
+	if((addr < PCIBIOS_MIN_MEM) || (addr > 0x4fffffff))
 		return __ioremap(addr, size, flags);
 
 	return (void *)addr;
diff --git a/include/asm-arm/arch-ixp4xx/irqs.h b/include/asm-arm/arch-ixp4xx/irqs.h
index e44a563..73a9aa5 100644
--- a/include/asm-arm/arch-ixp4xx/irqs.h
+++ b/include/asm-arm/arch-ixp4xx/irqs.h
@@ -62,10 +62,10 @@
 /*
  * Only first 32 sources are valid if running on IXP42x systems
  */
-#ifndef	CONFIG_CPU_IXP46X
-#define NR_IRQS			32
-#else
+#if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X)
 #define NR_IRQS			64
+#else
+#define NR_IRQS			32
 #endif
 
 #define	XSCALE_PMU_IRQ		(IRQ_IXP4XX_XSCALE_PMU)
diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
index ed35e5c..deb9899 100644
--- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
+++ b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
@@ -607,15 +607,43 @@
 
 #define DCMD_LENGTH	0x01fff		/* length mask (max = 8K - 1) */
 
+/* Processor id value in CP15 Register 0 */
+#define IXP425_PROCESSOR_ID_VALUE	0x690541c0
+#define IXP435_PROCESSOR_ID_VALUE	0x69054040
+#define IXP465_PROCESSOR_ID_VALUE	0x69054200
+#define IXP4XX_PROCESSOR_ID_MASK	0xfffffff0
+
 #ifndef __ASSEMBLY__
+static inline int cpu_is_ixp42x(void)
+{
+	extern unsigned int processor_id;
+
+	if ((processor_id & IXP4XX_PROCESSOR_ID_MASK) ==
+	     IXP425_PROCESSOR_ID_VALUE )
+		return 1;
+
+	return 0;
+}
+
+static inline int cpu_is_ixp43x(void)
+{
+#ifdef CONFIG_CPU_IXP43X
+	extern unsigned int processor_id;
+
+	if ((processor_id & IXP4XX_PROCESSOR_ID_MASK) ==
+	     IXP435_PROCESSOR_ID_VALUE )
+		return 1;
+#endif
+	return 0;
+}
+
 static inline int cpu_is_ixp46x(void)
 {
 #ifdef CONFIG_CPU_IXP46X
-	unsigned int processor_id;
-
-	asm("mrc p15, 0, %0, cr0, cr0, 0;" : "=r"(processor_id) :);
+	extern unsigned int processor_id;
 
-	if ((processor_id & 0xffffff00) == 0x69054200)
+	if ((processor_id & IXP4XX_PROCESSOR_ID_MASK) ==
+	     IXP465_PROCESSOR_ID_VALUE )
 		return 1;
 #endif
 	return 0;