make ramdisk support generic, some cleanups

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@3911 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/kernel.mk

@@ -20,7 +20,10 @@ LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
 )
 
 KERNEL_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
-LINUX_DIR := $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
+ifeq ($(LINUX_NAME),)
+LINUX_NAME:=linux-$(LINUX_VERSION)
+endif
+LINUX_DIR := $(KERNEL_BUILD_DIR)/$(LINUX_NAME)
 
 KMOD_BUILD_DIR := $(KERNEL_BUILD_DIR)/linux-modules
 MODULES_DIR := $(KERNEL_BUILD_DIR)/modules/$(MODULES_SUBDIR)

target/linux/aruba-2.6/Makefile

@@ -14,10 +14,6 @@ include ../kernel.mk
 $(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
 	[ -d ../generic-$(KERNEL)/patches ] && $(PATCH) $(LINUX_DIR) ../generic-$(KERNEL)/patches $(MAKE_TRACE)
 	[ -d ./patches ] && $(PATCH) $(LINUX_DIR) ./patches $(MAKE_TRACE)
-ifeq ($(CONFIG_ARUBA_RAMDISK),y)
-	@$(CP) config-ramdisk $(LINUX_DIR)/.config
-else
 	@$(CP) config $(LINUX_DIR)/.config
-endif
 	touch $@
 

target/linux/image/aruba/Makefile

@@ -16,7 +16,7 @@ endef
 
 define Image/Prepare
 	cat $(KDIR)/vmlinux | $(STAGING_DIR)/bin/lzma e -si -so -eos -lc1 -lp2 -pb2 > $(KDIR)/vmlinux.lzma
-	$(MAKE) -C ../generic/lzma-loader $(LOADER_MAKEOPTS) compile
+	$(MAKE) -C ../generic/lzma-loader $(LOADER_MAKEOPTS) clean compile
 endef
 
 define Image/Build

target/linux/kernel.mk

@@ -1,4 +1,4 @@
-LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
+LINUX_SOURCE:=$(LINUX_NAME).tar.bz2
 LINUX_SITE=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
            http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
@@ -43,7 +43,22 @@ $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
 	touch $@
 endif
 
-$(LINUX_DIR)/vmlinux: $(STAMP_DIR)/.linux-compile pkg-install
+ramdisk-config: $(LINUX_DIR)/.configured FORCE
+	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
+	grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
+ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
+	echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
+	echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
+	echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
+	mkdir -p $(BUILD_DIR)/root/etc/init.d
+	$(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
+	$(CP) ../generic-2.6/files/init.d/S00initramfs $(BUILD_DIR)/root/etc/init.d/
+else
+	rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
+	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
+endif
+
+$(LINUX_DIR)/vmlinux: $(STAMP_DIR)/.linux-compile pkg-install ramdisk-config
 	$(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH)
 
 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
@@ -72,6 +87,7 @@ $(KERNEL_IPKG):
 
 $(BUILD_DIR)/kernel.mk: $(LINUX_DIR) FORCE
 	echo "BOARD:=$(BOARD)" > $@
+	echo "LINUX_NAME:=$(LINUX_NAME)" >> $@
 	echo "LINUX_VERSION:=$(LINUX_VERSION)" >> $@
 	echo "LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
 

target/linux/rules.mk

@@ -9,7 +9,10 @@ endif
 MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
 
 LINUX_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
-LINUX_DIR := $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION)
+ifeq ($(LINUX_NAME),)
+LINUX_NAME:=linux-$(LINUX_VERSION)
+endif
+LINUX_DIR := $(LINUX_BUILD_DIR)/$(LINUX_NAME)
 LINUX_KERNEL:=$(LINUX_BUILD_DIR)/vmlinux
 
 LINUX_TARGET_DIR:=$(LINUX_BUILD_DIR)/root