ARM: CSR: Adding CSR SiRFprimaII board support

SiRFprimaII is the latest generation application processor from CSR’s
Multifunction SoC product family. Designed around an ARM cortex A9 core,
high-speed memory bus, advanced 3D accelerator and full-HD multi-format
video decoder, SiRFprimaII is able to meet the needs of complicated
applications for modern multifunction devices that require heavy concurrent
applications and fluid user experience. Integrated with GPS baseband,
analog and PMU, this new platform is designed to provide a cost effective
solution for Automotive and Consumer markets.

This patch adds the basic support for this SoC and EVB board based on device
tree. It is following the ZYNQ of Xilinx in some degree.

Signed-off-by: Binghua Duan <Binghua.Duan@csr.com>
Signed-off-by: Rongjun Ying <Rongjun.Ying@csr.com>
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Yuping Luo <Yuping.Luo@csr.com>
Signed-off-by: Bin Shi <Bin.Shi@csr.com>
Signed-off-by: Huayi Li <Huayi.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/arm/sirf.txt

@@ -0,0 +1,3 @@
+prima2 "cb" evalutation board
+Required root node properties:
+    - compatible = "sirf,prima2-cb", "sirf,prima2";

arch/arm/Kconfig

@@ -879,6 +879,20 @@ config ARCH_VT8500
 	select HAVE_PWM
 	help
 	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
+
+config ARCH_PRIMA2
+	bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
+	select CPU_V7
+	select GENERIC_TIME
+	select NO_IOPORT
+	select GENERIC_CLOCKEVENTS
+	select CLKDEV_LOOKUP
+	select GENERIC_IRQ_CHIP
+	select USE_OF
+	select ZONE_DMA
+	help
+          Support for CSR SiRFSoC ARM Cortex A9 Platform
+
 endchoice
 
 #

arch/arm/Makefile

@@ -169,6 +169,7 @@ machine-$(CONFIG_ARCH_OMAP3)		:= omap2
 machine-$(CONFIG_ARCH_OMAP4)		:= omap2
 machine-$(CONFIG_ARCH_ORION5X)		:= orion5x
 machine-$(CONFIG_ARCH_PNX4008)		:= pnx4008
+machine-$(CONFIG_ARCH_PRIMA2)		:= prima2
 machine-$(CONFIG_ARCH_PXA)		:= pxa
 machine-$(CONFIG_ARCH_REALVIEW)		:= realview
 machine-$(CONFIG_ARCH_RPC)		:= rpc