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authorJens Muecke <jens@nons.de>2007-10-28 21:20:48 +0000
committerJens Muecke <jens@nons.de>2007-10-28 21:20:48 +0000
commitb314ffdd3abe3babc3ab9d4caea87e2d5da3d8ef (patch)
tree963fce7975bcbe4c1ca2c229ca78736aa8439c01 /target/linux/olpc/image
parentdd6cef677b3b316a88a9550467c2379ffa9c9fdb (diff)
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Initial OLPC target
SVN-Revision: 9457
Diffstat (limited to 'target/linux/olpc/image')
-rw-r--r--target/linux/olpc/image/Config.in35
-rw-r--r--target/linux/olpc/image/Makefile82
-rwxr-xr-xtarget/linux/olpc/image/gen_image.sh45
-rw-r--r--target/linux/olpc/image/menu.lst15
-rw-r--r--target/linux/olpc/image/olpc.fth4
5 files changed, 181 insertions, 0 deletions
diff --git a/target/linux/olpc/image/Config.in b/target/linux/olpc/image/Config.in
new file mode 100644
index 0000000000..6252ae6d1f
--- /dev/null
+++ b/target/linux/olpc/image/Config.in
@@ -0,0 +1,35 @@
+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.
diff --git a/target/linux/olpc/image/Makefile b/target/linux/olpc/image/Makefile
new file mode 100644
index 0000000000..14050bb7f6
--- /dev/null
+++ b/target/linux/olpc/image/Makefile
@@ -0,0 +1,82 @@
+#
+# 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))
+
diff --git a/target/linux/olpc/image/gen_image.sh b/target/linux/olpc/image/gen_image.sh
new file mode 100755
index 0000000000..d48e3720dc
--- /dev/null
+++ b/target/linux/olpc/image/gen_image.sh
@@ -0,0 +1,45 @@
+#!/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
+
diff --git a/target/linux/olpc/image/menu.lst b/target/linux/olpc/image/menu.lst
new file mode 100644
index 0000000000..cb306cc443
--- /dev/null
+++ b/target/linux/olpc/image/menu.lst
@@ -0,0 +1,15 @@
+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
diff --git a/target/linux/olpc/image/olpc.fth b/target/linux/olpc/image/olpc.fth
new file mode 100644
index 0000000000..02c9c2e991
--- /dev/null
+++ b/target/linux/olpc/image/olpc.fth
@@ -0,0 +1,4 @@
+\ 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