initial support for Blackfin processors

[Peter: don't allow MMU on bfin]
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

Makefile

@@ -263,6 +263,7 @@ endif
 KERNEL_ARCH:=$(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 	-e s/i.86/i386/ -e s/sun4u/sparc64/ \
 	-e s/arm.*/arm/ -e s/sa110/arm/ \
+	-e s/bfin/blackfin/ \
 	-e s/parisc64/parisc/ \
 	-e s/powerpc64/powerpc/ \
 	-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

boot/u-boot/Config.in

@@ -75,6 +75,10 @@ config BR2_TARGET_UBOOT_FORMAT_KWB
 	depends on BR2_arm
 	bool "u-boot.kwb (Marvell)"
 
+config BR2_TARGET_UBOOT_FORMAT_LDR
+	depends on BR2_bfin
+	bool "u-boot.ldr"
+
 endchoice
 
 config BR2_TARGET_UBOOT_TOOL_MKIMAGE

boot/u-boot/u-boot.mk

@@ -31,6 +31,8 @@ U_BOOT_CAT:=$(BZCAT)
 ifeq ($(BR2_TARGET_UBOOT_FORMAT_KWB),y)
 U_BOOT_BIN:=u-boot.kwb
 U_BOOT_MAKE_OPT:=$(U_BOOT_BIN)
+else ifeq ($(BR2_TARGET_UBOOT_FORMAT_LDR),y)
+U_BOOT_BIN:=u-boot.ldr
 else
 U_BOOT_BIN:=u-boot.bin
 endif

linux/Config.in

@@ -115,7 +115,7 @@ choice
 
 config BR2_LINUX_KERNEL_UIMAGE
 	bool "uImage"
-	depends on BR2_arm || BR2_armeb || BR2_powerpc || BR2_avr32 || BR2_sh || BR2_sh64
+	depends on BR2_arm || BR2_armeb || BR2_bfin || BR2_powerpc || BR2_avr32 || BR2_sh || BR2_sh64
 
 config BR2_LINUX_KERNEL_BZIMAGE
 	bool "bzImage"

linux/linux.mk

@@ -31,7 +31,12 @@ LINUX26_MAKE_FLAGS = \
 LINUX26_VERSION_PROBED = $(shell $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(LINUX26_DIR) --no-print-directory -s kernelrelease)
 
 ifeq ($(BR2_LINUX_KERNEL_UIMAGE),y)
+ifeq ($(KERNEL_ARCH),blackfin)
+# a uImage, but with a different file name
+LINUX26_IMAGE_NAME=vmImage
+else
 LINUX26_IMAGE_NAME=uImage
+endif
 LINUX26_DEPENDENCIES+=$(MKIMAGE)
 else ifeq ($(BR2_LINUX_KERNEL_BZIMAGE),y)
 LINUX26_IMAGE_NAME=bzImage

target/Config.in.arch

@@ -14,6 +14,8 @@ config BR2_armeb
 config BR2_avr32
 	bool "avr32"
 	select BR2_SOFT_FLOAT
+config BR2_bfin
+	bool "bfin"
 config BR2_i386
 	bool "i386"
 config BR2_m68k
@@ -127,6 +129,20 @@ config BR2_ARM_OABI
 	bool "OABI"
 endchoice
 
+choice
+	prompt "Target ABI"
+	depends on BR2_bfin
+	default BR2_BFIN_FLAT
+config BR2_BFIN_FDPIC
+	bool "FDPIC"
+config BR2_BFIN_FLAT
+	bool "FLAT"
+config BR2_BFIN_FLAT_SEP_DATA
+	bool "FLAT (Separate data)"
+config BR2_BFIN_SHARED_FLAT
+	bool "Shared FLAT"
+endchoice
+
 choice
 	prompt "Target Architecture Variant"
 	depends on BR2_mips || BR2_mipsel
@@ -444,6 +460,7 @@ config BR2_ARCH
 	default "arm"		if BR2_arm
 	default "armeb"		if BR2_armeb
 	default "avr32"		if BR2_avr32
+	default "bfin"		if BR2_bfin
 	default "i386"		if BR2_x86_i386
 	default "i486"		if BR2_x86_i486
 	default "i586"		if BR2_x86_i586
@@ -485,7 +502,7 @@ config BR2_ARCH
 
 config BR2_ENDIAN
 	string
-	default "LITTLE" if BR2_arm || BR2_i386 || BR2_mipsel || \
+	default "LITTLE" if BR2_arm || BR2_bfin || BR2_i386 || BR2_mipsel || \
 			    BR2_sh3 || BR2_sh4 || BR2_x86_64 || BR2_sh64
 	default "BIG"    if BR2_armeb || BR2_avr32 || BR2_m68k || BR2_mips || \
 			    BR2_powerpc || BR2_sh2a_nofpueb || BR2_sh2eb || \

toolchain/toolchain-common.in

@@ -68,7 +68,7 @@ config BR2_NEEDS_GETTEXT_IF_LOCALE
 
 config BR2_USE_MMU
 	bool "Enable MMU support" if BR2_arm || BR2_armeb || BR2_mips || BR2_mipsel || BR2_sh || BR2_xtensa
-	default y
+	default y if !BR2_bfin
 	help
 	  If your target has a MMU, you should say Y here.  If you
 	  are unsure, just say Y.