Index: linux-2.6.23.17/arch/mips/Kconfig
===================================================================
--- linux-2.6.23.17.orig/arch/mips/Kconfig
+++ linux-2.6.23.17/arch/mips/Kconfig
@@ -595,6 +595,20 @@ config WR_PPMC
 	  This enables support for the Wind River MIPS32 4KC PPMC evaluation
 	  board, which is based on GT64120 bridge chip.
 
+config MIKROTIK_RB500
+	bool "Support for RB5xx boards"
+	select HW_HAS_PCI
+	select IRQ_CPU
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_SUPPORTS_LITTLE_ENDIAN
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SWAP_IO_SPACE
+	select DMA_NONCOHERENT
+	select GENERIC_GPIO
+	help
+	 Support the Mikrotik(tm) Routerboard 500 series,
+	 such as the RB532.
+
 endchoice
 
 source "arch/mips/au1000/Kconfig"
@@ -829,6 +843,7 @@ config MIPS_L1_CACHE_SHIFT
 	default "4" if MACH_DECSTATION
 	default "7" if SGI_IP27 || SNI_RM
 	default "4" if PMC_MSP4200_EVAL
+	default "4" if MIKROTIK_RB500
 	default "5"
 
 config HAVE_STD_PC_SERIAL_PORT
Index: linux-2.6.23.17/arch/mips/Makefile
===================================================================
--- linux-2.6.23.17.orig/arch/mips/Makefile
+++ linux-2.6.23.17/arch/mips/Makefile
@@ -300,6 +300,13 @@ load-$(CONFIG_LEMOTE_FULONG) +=0xfffffff
 cflags-$(CONFIG_LEMOTE_FULONG) += -Iinclude/asm-mips/mach-lemote
 
 #
+# Routerboard 532 board
+#
+core-$(CONFIG_MIKROTIK_RB500)	+= arch/mips/rb500/
+cflags-$(CONFIG_MIKROTIK_RB500)	+= -Iinclude/asm-mips/rc32434
+load-$(CONFIG_MIKROTIK_RB500)	+= 0xffffffff80101000
+
+#
 # For all MIPS, Inc. eval boards
 #
 core-$(CONFIG_MIPS_BOARDS_GEN)	+= arch/mips/mips-boards/generic/
Index: linux-2.6.23.17/arch/mips/pci/Makefile
===================================================================
--- linux-2.6.23.17.orig/arch/mips/pci/Makefile
+++ linux-2.6.23.17/arch/mips/pci/Makefile
@@ -46,3 +46,4 @@ obj-$(CONFIG_TOSHIBA_RBTX4938)	+= fixup-
 obj-$(CONFIG_VICTOR_MPC30X)	+= fixup-mpc30x.o
 obj-$(CONFIG_ZAO_CAPCELLA)	+= fixup-capcella.o
 obj-$(CONFIG_WR_PPMC)		+= fixup-wrppmc.o
+obj-$(CONFIG_MIKROTIK_RB500)	+= pci-rc32434.o ops-rc32434.o fixup-rb500.o
Index: linux-2.6.23.17/drivers/pci/Makefile
===================================================================
--- linux-2.6.23.17.orig/drivers/pci/Makefile
+++ linux-2.6.23.17/drivers/pci/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_PPC32) += setup-irq.o
 obj-$(CONFIG_PPC64) += setup-bus.o
 obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o
 obj-$(CONFIG_X86_VISWS) += setup-irq.o
+obj-$(CONFIG_MIKROTIK_RB500) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
Index: linux-2.6.23.17/include/asm-mips/bootinfo.h
===================================================================
--- linux-2.6.23.17.orig/include/asm-mips/bootinfo.h
+++ linux-2.6.23.17/include/asm-mips/bootinfo.h
@@ -208,6 +208,11 @@
 #define MACH_GROUP_WINDRIVER   28	/* Windriver boards */
 #define MACH_WRPPMC             1
 
+
+#define MACH_GROUP_MIKROTIK	29 	/* Mikrotik Boards                       */
+#define  MACH_MIKROTIK_RB532	0	/* Mikrotik RouterBoard 532 */
+#define  MACH_MIKROTIK_RB532A	1	/* Mikrotik RouterBoard 532A */
+
 #define CL_SIZE			COMMAND_LINE_SIZE
 
 const char *get_system_type(void);
Index: linux-2.6.23.17/include/asm-mips/cpu.h
===================================================================
--- linux-2.6.23.17.orig/include/asm-mips/cpu.h
+++ linux-2.6.23.17/include/asm-mips/cpu.h
@@ -217,8 +217,9 @@
 #define CPU_R14000		64
 #define CPU_LOONGSON1           65
 #define CPU_LOONGSON2           66
+#define CPU_RC32300            	67
 
-#define CPU_LAST		66
+#define CPU_LAST		67
 
 /*
  * ISA Level encodings
