[ARM] 5480/1: U300-v5 integrate into the ARM architecture

This hooks the U300 support into Kbuild and makes a small hook
in mmu.c for supporting an odd memory alignment with shared memory
on these systems.

This is rebased to RMK:s GIT HEAD. This patch tries to add the
Kconfig option in alphabetic order by option text and the Makefile
entry after config symbol.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -594,6 +594,20 @@ config ARCH_LH7A40X
 	  core with a wide array of integrated devices for
 	  hand-held and low-power applications.
 
+config ARCH_U300
+	bool "ST-Ericsson U300 Series"
+	depends on MMU
+	select CPU_ARM926T
+	select ARM_AMBA
+	select ARM_VIC
+	select GENERIC_TIME
+	select GENERIC_CLOCKEVENTS
+	select HAVE_CLK
+	select COMMON_CLKDEV
+	select GENERIC_GPIO
+	help
+	  Support for ST-Ericsson U300 series mobile platforms.
+
 config ARCH_DAVINCI
 	bool "TI DaVinci"
 	select CPU_ARM926T
@@ -705,6 +719,8 @@ source "arch/arm/mach-ks8695/Kconfig"
 
 source "arch/arm/mach-msm/Kconfig"
 
+source "arch/arm/mach-u300/Kconfig"
+
 source "arch/arm/mach-w90x900/Kconfig"
 
 # Definitions to make life easier

arch/arm/Makefile

@@ -149,6 +149,7 @@ machine-$(CONFIG_ARCH_S3C24A0)		:= s3c24a0
 machine-$(CONFIG_ARCH_S3C64XX)		:= s3c6400 s3c6410
 machine-$(CONFIG_ARCH_SA1100)		:= sa1100
 machine-$(CONFIG_ARCH_SHARK)		:= shark
+machine-$(CONFIG_ARCH_U300)		:= u300
 machine-$(CONFIG_ARCH_VERSATILE)	:= versatile
 machine-$(CONFIG_ARCH_W90X900)		:= w90x900
 machine-$(CONFIG_FOOTBRIDGE)		:= footbridge

arch/arm/mm/mmu.c

@@ -839,6 +839,20 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 		reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
 				BOOTMEM_EXCLUSIVE);
 
+	/*
+	 * U300 - This platform family can share physical memory
+	 * between two ARM cpus, one running Linux and the other
+	 * running another OS.
+	 */
+	if (machine_is_u300()) {
+#ifdef CONFIG_MACH_U300_SINGLE_RAM
+#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) &&	\
+	CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
+		res_size = 0x00100000;
+#endif
+#endif
+	}
+
 #ifdef CONFIG_SA1111
 	/*
 	 * Because of the SA1111 DMA bug, we want to preserve our