Initial OLPC target

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9457 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/olpc/image/Config.in

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+config OLPC_GRUB_IMAGES
+    bool "Build GRUB images"
+    depends TARGET_olpc
+    depends TARGET_ROOTFS_EXT2FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS || TARGET_ROOTFS_ISO
+	select PACKAGE_grub
+    default y
+
+config OLPC_GRUB_IMAGES_PAD
+	bool "Pad GRUB images to filesystem size (for JFFS2)"
+	depends OLPC_GRUB_IMAGES
+
+config OLPC_GRUB_BAUDRATE
+    int "Serial port baud rate"
+    depends OLPC_GRUB_IMAGES
+    default 38400
+
+config OLPC_GRUB_KERNELPART
+    int "Kernel partition size (in MB)"
+    depends OLPC_GRUB_IMAGES
+    default 4
+
+config OLPC_GRUB_ROOTPART
+    string
+    prompt "Root partition on target device" if OLPC_GRUB_IMAGES
+    default "/dev/hda2"
+    help
+        The root partition on the final device.  If you don't know,
+        you probably want the default (/dev/hda2).
+
+config OLPC_GRUB_BOOTOPTS
+    string
+    prompt "Extra kernel boot options" if OLPC_GRUB_IMAGES
+    default ""
+    help
+        If you don't know, just leave it blank.

target/linux/olpc/image/Makefile

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+# 
+# Copyright (C) 2007 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/image.mk
+
+export PATH=$(TARGET_PATH):/sbin
+BOOTOPTS=$(strip $(subst ",, $(CONFIG_OLPC_GRUB_BOOTOPTS)))
+ROOTPART=$(strip $(subst ",, $(CONFIG_OLPC_GRUB_ROOTPART)))
+#"))")) # fix vim's broken syntax highlighting
+
+
+ifeq ($(CONFIG_OLPC_GRUB_IMAGES),y)
+  define Image/cmdline/squashfs
+    block2mtd.block2mtd=$(ROOTPART),65536,rootfs root=/dev/mtdblock0 rootfstype=squashfs init=/etc/preinit
+  endef
+
+  define Image/cmdline/jffs2-64k
+    block2mtd.block2mtd=$(ROOTPART),65536,rootfs root=/dev/mtdblock0 rootfstype=jffs2 init=/etc/preinit
+  endef
+
+  define Image/cmdline/jffs2-128k
+    block2mtd.block2mtd=$(ROOTPART),131072,rootfs root=/dev/mtdblock0 rootfstype=jffs2 init=/etc/preinit
+  endef
+
+  define Image/cmdline/ext2
+    root=$(ROOTPART) rootfstype=ext2 init=/etc/preinit
+  endef
+  
+  define Image/Build/grub
+	# left here because the image builder doesnt need these
+	$(INSTALL_DIR) $(KDIR)/root.grub/boot/grub
+	$(CP) \
+		$(KDIR)/*stage* \
+		$(KDIR)/root.grub/boot/grub/
+	$(CP) $(KDIR)/bzImage $(KDIR)/root.grub/boot/vmlinuz
+	$(CP) ./olpc.fth $(KDIR)/root.grub/boot/olpc.fth
+	sed \
+		-e 's#@CMDLINE@#$(strip $(call Image/cmdline/$(1))) $(BOOTOPTS)#g' \
+		-e 's#@BAUDRATE@#$(CONFIG_OLPC_GRUB_BAUDRATE)#g' \
+		./menu.lst > $(KDIR)/root.grub/boot/grub/menu.lst
+	PADDING="$(CONFIG_OLPC_GRUB_IMAGES_PAD)" PATH="$(TARGET_PATH)" ./gen_image.sh $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-$(1).image $(CONFIG_OLPC_GRUB_KERNELPART) $(KDIR)/root.grub $(CONFIG_TARGET_ROOTFS_FSPART) $(KDIR)/root.$(1)
+	$(call Image/Build/grub/$(1))
+  endef
+endif
+
+ifeq ($(CONFIG_OLPC_GRUB_IMAGES),y)
+  define Image/Prepare/grub
+	# for the image builder
+	$(CP) \
+		$(STAGING_DIR_HOST)/usr/lib/grub/i386-pc/stage1 \
+		$(STAGING_DIR_HOST)/usr/lib/grub/i386-pc/stage2 \
+		$(STAGING_DIR_HOST)/usr/lib/grub/i386-pc/e2fs_stage1_5 \
+		$(KDIR)/
+  endef
+endif
+
+define Image/Prepare
+	$(CP) $(LINUX_DIR)/arch/i386/boot/bzImage $(KDIR)/bzImage
+	$(call Image/Prepare/grub)
+endef
+  
+define Image/Build/squashfs
+    $(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
+endef
+
+define Image/BuildKernel
+	$(CP) $(KDIR)/bzImage $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-vmlinuz
+endef
+
+define Image/Build
+	$(call Image/Build/$(1))
+	$(call Image/Build/grub,$(1))
+	$(CP) $(KDIR)/root.$(1) $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-$(1).fs
+	$(CP) $(KDIR)/bzImage $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-vmlinuz
+endef
+
+$(eval $(call BuildImage))
+

target/linux/olpc/image/gen_image.sh

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+#!/usr/bin/env bash
+# Copyright (C) 2006 OpenWrt.org
+set -x 
+[ $# == 5 ] || {
+    echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image>"
+    exit 1
+}
+
+OUTPUT="$1"
+KERNELSIZE="$2"
+KERNELDIR="$3"
+ROOTFSSIZE="$4"
+ROOTFSIMAGE="$5"
+
+rm -f "$OUTPUT"
+
+head=16
+sect=63
+cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
+
+# create partition table
+set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m`
+
+KERNELOFFSET="$(($1 / 512))"
+KERNELSIZE="$(($2 / 512))"
+ROOTFSOFFSET="$(($3 / 512))"
+ROOTFSSIZE="$(($4 / 512))"
+
+BLOCKS="$((($KERNELSIZE / 2) - 1))"
+
+genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel"
+dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc
+[ -n "$PADDING" ] && dd if=/dev/zero of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc count="$ROOTFSSIZE"
+dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
+#rm -f "$OUTPUT.kernel"
+
+which chpax >/dev/null && chpax -zp $(which grub)
+grub --batch --no-curses --no-floppy --device-map=/dev/null <<EOF
+device (hd0) $OUTPUT
+geometry (hd0) $cyl $head $sect
+root (hd0,0)
+setup (hd0)
+quit
+EOF
+

target/linux/olpc/image/menu.lst

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+serial --unit=0 --speed=@BAUDRATE@ --word=8 --parity=no --stop=1
+terminal --timeout=2 console serial
+
+default 0
+timeout 5
+
+title   OpenWrt
+root    (hd0,0)
+kernel  /boot/vmlinuz @CMDLINE@ noinitrd console=tty0 console=ttyS0,@BAUDRATE@n8 reboot=bios
+boot
+
+title	OpenWrt (failsafe)
+root	(hd0,0)
+kernel  /boot/vmlinuz failsafe=true @CMDLINE@ noinitrd console=tty0 console=ttyS0,@BAUDRATE@n8 reboot=bios
+boot

target/linux/olpc/image/olpc.fth

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+\ Boot script
+" sd:\boot\vmlinuz" to boot-device
+" block2mtd.block2mtd=/dev/mmcblk0p2,65536,rootfs root=/dev/mtdblock0 rootfstype=squashfs init=/etc/preinit  noinitrd console=tty0" to boot-file
+boot