openwrt-xburst/target/linux/ar7/patches-2.6.22/100-board_support.patch

diff -urN linux-2.6.22/arch/mips/Kconfig linux-2.6.22.new/arch/mips/Kconfig
--- linux-2.6.22/arch/mips/Kconfig	2007-07-09 01:32:17.000000000 +0200
+++ linux-2.6.22.new/arch/mips/Kconfig	2007-07-11 02:34:51.000000000 +0200
@@ -15,6 +15,22 @@
 	prompt "System type"
 	default SGI_IP22
 
+config AR7
+	bool "Texas Instruments AR7"
+	select BOOT_ELF32
+	select DMA_NONCOHERENT
+	select HW_HAS_PCI
+	select IRQ_CPU
+	select SWAP_IO_SPACE
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_HAS_EARLY_PRINTK
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_KGDB
+	select SYS_SUPPORTS_LITTLE_ENDIAN
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select GENERIC_GPIO
+	select GENERIC_HARDIRQS_NO__DO_IRQ
+
 config MACH_ALCHEMY
 	bool "Alchemy processor based machines"
 
diff -urN linux-2.6.22/arch/mips/kernel/traps.c linux-2.6.22.new/arch/mips/kernel/traps.c
--- linux-2.6.22/arch/mips/kernel/traps.c	2007-07-09 01:32:17.000000000 +0200
+++ linux-2.6.22.new/arch/mips/kernel/traps.c	2007-07-11 02:32:39.000000000 +0200
@@ -1074,11 +1074,23 @@ void *set_except_vector(int n, void *addr)
 	unsigned long old_handler = exception_handlers[n];
 
 	exception_handlers[n] = handler;
-	if (n == 0 && cpu_has_divec) {
-		*(volatile u32 *)(ebase + 0x200) = 0x08000000 |
-		                                 (0x03ffffff & (handler >> 2));
-		flush_icache_range(ebase + 0x200, ebase + 0x204);
-	}
+	if (n == 0 && cpu_has_divec)
+		if ((handler ^ (ebase + 4)) & 0xfc000000) {
+			/* lui k0, 0x0000 */
+			*(u32 *)(ebase + 0x200) = 0x3c1a0000 | (handler >> 16);
+			/* ori k0, 0x0000 */
+			*(u32 *)(ebase + 0x204) =
+					0x375a0000 | (handler & 0xffff);
+			/* jr k0 */
+			*(u32 *)(ebase + 0x208) = 0x03400008;
+			/* nop */
+			*(u32 *)(ebase + 0x20C) = 0x00000000;
+			flush_icache_range(ebase + 0x200, ebase + 0x210);
+		} else {
+			*(volatile u32 *)(ebase + 0x200) =
+				0x08000000 | (0x03ffffff & (handler >> 2));
+			flush_icache_range(ebase + 0x200, ebase + 0x204);
+		}
 	return (void *)old_handler;
 }
 
diff -urN linux-2.6.22/arch/mips/Makefile linux-2.6.22.new/arch/mips/Makefile
--- linux-2.6.22/arch/mips/Makefile	2007-07-09 01:32:17.000000000 +0200
+++ linux-2.6.22.new/arch/mips/Makefile	2007-07-11 02:32:39.000000000 +0200
@@ -158,6 +158,13 @@
 #
 
 #
+# Texas Instruments AR7
+#
+core-$(CONFIG_AR7)		+= arch/mips/ar7/
+cflags-$(CONFIG_AR7)		+= -Iinclude/asm-mips/ar7
+load-$(CONFIG_AR7)		+= 0xffffffff94100000
+
+#
 # Acer PICA 61, Mips Magnum 4000 and Olivetti M700.
 #
 core-$(CONFIG_MACH_JAZZ)	+= arch/mips/jazz/
diff -urN linux-2.6.22.4/include/asm-mips/page.h linux-2.6.22.4.new/include/asm-mips/page.h
--- linux-2.6.22.4/include/asm-mips/page.h	2007-08-21 12:33:06.000000000 +0800
+++ linux-2.6.22.4.new/include/asm-mips/page.h	2007-09-13 15:13:00.000000000 +0800
@@ -187,8 +187,10 @@
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE)
-#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET)
+#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE +	\
+				 PHYS_OFFSET)
+#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET -	\
+				 PHYS_OFFSET)
 
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>