add target support for SGI O2 workstation

target/config/Config.in.cpu

@@ -795,6 +795,16 @@ config ADK_TARGET_CPU_MIPS_MIPS32R6
 	depends on ADK_TARGET_ARCH_MIPS
 
 # mips64
+config ADK_TARGET_CPU_MIPS64_MIPS4
+	bool "mips4"
+	select ADK_LINUX_64
+	select ADK_TARGET_SUPPORTS_THREADS
+	select ADK_TARGET_SUPPORTS_LT
+	select ADK_TARGET_SUPPORTS_NPTL
+	select ADK_TARGET_WITH_MMU
+	select ADK_TARGET_ARCH_MIPS_WITH_NAN_LEGACY
+	depends on ADK_TARGET_ARCH_MIPS64
+
 config ADK_TARGET_CPU_MIPS64_MIPS64
 	bool "mips64"
 	select ADK_LINUX_64

target/config/Config.in.rootfs

@@ -20,6 +20,7 @@ config ADK_TARGET_ROOTFS_INITRAMFSPIGGYBACK
 		ADK_TARGET_ARCH_M68K || \
 		ADK_TARGET_ARCH_MICROBLAZE || \
 		ADK_TARGET_ARCH_MIPS || \
+		ADK_TARGET_ARCH_MIPS64 || \
 		ADK_TARGET_ARCH_PPC || \
 		ADK_TARGET_ARCH_SH || \
 		ADK_TARGET_ARCH_SPARC || \
@@ -38,6 +39,7 @@ config ADK_TARGET_ROOTFS_INITRAMFS
 		ADK_TARGET_ARCH_ARM || \
 		ADK_TARGET_ARCH_MICROBLAZE || \
 		ADK_TARGET_ARCH_MIPS || \
+		ADK_TARGET_ARCH_MIPS64 || \
 		ADK_TARGET_ARCH_PPC || \
 		ADK_TARGET_ARCH_SH || \
 		ADK_TARGET_ARCH_SPARC || \

target/config/Config.in.runtime

@@ -319,6 +319,7 @@ config ADK_RUNTIME_CONSOLE_SERIAL_SPEED
 		|| ADK_TARGET_SIM
 	default "9600" if ADK_TARGET_SYSTEM_FON_FON2100
 	default "9600" if ADK_TARGET_SYSTEM_NUMATO_MIMASV2
+	default "9600" if ADK_TARGET_SYSTEM_SGI_O2
 	default "38400" if ADK_TARGET_SYSTEM_PCENGINES_WRAP
 	default "38400" if ADK_TARGET_SYSTEM_ANDES_AG101P
 	default "115200"

target/linux/config/Config.in.ethernet

@@ -41,6 +41,9 @@ config ADK_KERNEL_NET_VENDOR_REALTEK
 config ADK_KERNEL_NET_VENDOR_MARVELL
 	bool
 
+config ADK_KERNEL_NET_VENDOR_SGI
+	bool
+
 config ADK_KERNEL_NET_VENDOR_TI
 	bool
 
@@ -452,4 +455,14 @@ config ADK_KERNEL_ATL1
 	help
 	  This driver supports the Atheros/Attansic L1 gigabit ethernet adapter.
 
+config ADK_KERNEL_SGI_O2MACE_ETH
+	tristate "SGI O2 ethernet driver"
+	select ADK_KERNEL_NET_VENDOR_SGI
+	select ADK_KERNEL_CRC32
+	depends on ADK_TARGET_SYSTEM_SGI_O2
+	default y if ADK_TARGET_SYSTEM_SGI_O2
+	default n
+	help
+	  This driver supports the SGI O2 ethernet card.
+
 endmenu

target/linux/config/Config.in.serial

@@ -95,6 +95,7 @@ config ADK_KERNEL_SERIAL_8250
 		|| ADK_TARGET_SYSTEM_PCENGINES_ALIX \
 		|| ADK_TARGET_SYSTEM_QEMU_MICROBLAZE_ML605 \
 		|| ADK_TARGET_SYSTEM_QEMU_MIPS \
+		|| ADK_TARGET_SYSTEM_SGI_O2 \
 		|| ADK_TARGET_SYSTEM_QEMU_NIOS2 \
 		|| ADK_TARGET_SYSTEM_QEMU_OR1K \
 		|| ADK_TARGET_SYSTEM_QEMU_PPC_BAMBOO \
@@ -116,6 +117,7 @@ config ADK_KERNEL_SERIAL_8250
 	default y if ADK_TARGET_SYSTEM_PCENGINES_ALIX
 	default y if ADK_TARGET_SYSTEM_QEMU_MICROBLAZE_ML605
 	default y if ADK_TARGET_SYSTEM_QEMU_MIPS
+	default y if ADK_TARGET_SYSTEM_SGI_O2
 	default y if ADK_TARGET_SYSTEM_QEMU_NIOS2
 	default y if ADK_TARGET_SYSTEM_QEMU_OR1K
 	default y if ADK_TARGET_SYSTEM_QEMU_PPC_BAMBOO

target/mips64/kernel/sgi-o2

@@ -0,0 +1,3 @@
+CONFIG_SGI_IP32=y
+CONFIG_MIPS32_O32=y
+CONFIG_MIPS32_N32=y

target/mips64/systems/sgi-o2

@@ -0,0 +1,12 @@
+config ADK_TARGET_SYSTEM_SGI_O2
+	bool "SGI O2"
+	depends on ADK_TARGET_BIG_ENDIAN
+	select ADK_TARGET_CPU_MIPS64_MIPS4
+	select ADK_TARGET_WITH_SERIAL
+	select ADK_TARGET_WITH_NET
+	select ADK_TARGET_WITH_NETDEVICE
+	select ADK_TARGET_WITH_BLOCK
+	select ADK_TARGET_KERNEL_WITH_COMPRESSION
+	help
+	  Support for SGI O2.
+