bootloaders: move bootloader build code to boot/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

boot/syslinux/Config.in

@@ -0,0 +1,12 @@
+config BR2_TARGET_SYSLINUX
+	bool "syslinux"
+	depends on BR2_i386
+	help
+	  The syslinux bootloader for x86 systems.
+	  This includes: syslinux, pxelinux, extlinux.
+
+config BR2_TARGET_PXELINUX
+	bool "pxelinux"
+	depends on BR2_i386 || BR2_x86_64
+	help
+	  The pxelinux loader for x86 systems.

boot/syslinux/syslinux-3.82-makefile.patch

@@ -0,0 +1,11 @@
+--- syslinux-3.82-org/Makefile	2009-09-17 13:11:23.000000000 +0200
++++ syslinux-3.82/Makefile	2009-09-17 13:13:32.000000000 +0200
+@@ -42,7 +42,7 @@
+ 	mbr/mbr_c.bin mbr/altmbr_c.bin mbr/gptmbr_c.bin \
+ 	mbr/mbr_f.bin mbr/altmbr_f.bin mbr/gptmbr_f.bin \
+ 	core/pxelinux.0 core/isolinux.bin core/isolinux-debug.bin \
+-	gpxe/gpxelinux.0 dos/syslinux.com win32/syslinux.exe \
++	gpxe/gpxelinux.0 dos/syslinux.com \
+ 	$(MODULES)
+ 
+ # BSUBDIRs build the on-target binary components.

boot/syslinux/syslinux.mk

@@ -0,0 +1,70 @@
+SYSLINUX_SUPPORTED_ARCH=n
+ifeq ($(ARCH),i386)
+SYSLINUX_SUPPORTED_ARCH=y
+endif
+ifeq ($(ARCH),i486)
+SYSLINUX_SUPPORTED_ARCH=y
+endif
+ifeq ($(ARCH),i586)
+SYSLINUX_SUPPORTED_ARCH=y
+endif
+ifeq ($(ARCH),i686)
+SYSLINUX_SUPPORTED_ARCH=y
+endif
+ifeq ($(ARCH),x86_64)
+SYSLINUX_SUPPORTED_ARCH=y
+endif
+ifeq ($(SYSLINUX_SUPPORTED_ARCH),y)
+
+#############################################################
+#
+# syslinux to make target msdos/iso9660 filesystems bootable
+#
+#############################################################
+
+SYSLINUX_VERSION:=3.82
+SYSLINUX_DIR=$(BUILD_DIR)/syslinux-$(SYSLINUX_VERSION)
+SYSLINUX_DIR2=$(TOOLCHAIN_DIR)/syslinux-$(SYSLINUX_VERSION)
+SYSLINUX_SOURCE=syslinux-$(SYSLINUX_VERSION).tar.bz2
+SYSLINUX_CAT:=$(BZCAT)
+SYSLINUX_SITE=$(BR2_KERNEL_MIRROR)/linux/utils/boot/syslinux/
+SYSLINUX_BIN=$(SYSLINUX_DIR2)/mtools/syslinux
+
+
+$(DL_DIR)/$(SYSLINUX_SOURCE):
+	 $(call DOWNLOAD,$(SYSLINUX_SITE),$(SYSLINUX_SOURCE))
+
+syslinux-source: $(DL_DIR)/$(SYSLINUX_SOURCE)
+
+$(SYSLINUX_DIR)/Makefile: $(DL_DIR)/$(SYSLINUX_SOURCE) $(SYSLINUX_PATCH)
+	$(SYSLINUX_CAT) $(DL_DIR)/$(SYSLINUX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
+	toolchain/patch-kernel.sh $(SYSLINUX_DIR) boot/syslinux/ \*.patch
+	touch -c $@
+
+$(SYSLINUX_DIR)/isolinux.bin $(SYSLINUX_DIR)/pxelinux.bin: $(SYSLINUX_DIR)/Makefile
+	$(MAKE) CC="$(HOSTCC)" AR="$(HOSTAR)" -C $(SYSLINUX_DIR)
+	touch -c $@
+
+syslinux: $(SYSLINUX_DIR)/isolinux.bin
+pxelinux: $(SYSLINUX_DIR)/pxelinux.bin
+
+pxelinux-clean syslinux-clean:
+	rm -f $(SYSLINUX_DIR)/isolinux.bin $(SYSLINUX_DIR)/pxelinux.bin
+	-$(MAKE) -C $(SYSLINUX_DIR) clean
+
+pxelinux-dirclean syslinux-dirclean:
+	rm -rf $(SYSLINUX_DIR)
+
+endif
+
+#############################################################
+#
+# Toplevel Makefile options
+#
+#############################################################
+ifeq ($(BR2_TARGET_SYSLINUX),y)
+TARGETS+=syslinux
+endif
+ifeq ($(BR2_TARGET_PXELINUX),y)
+TARGETS+=pxelinux
+endif