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#!/bin/bash
set -e
set -u
# Build host for ARM.
HOST="pound.cs.unc.edu"
# Not installed on the U-Boot partition.
ZIMAGE_FILE="zImage"
# Name of the installed files on the U-Boot partition.
UIMAGE_FILE="uImage-litmus"
INITRD_FILE="uInitrd-litmus"
SCRIPT_FILE="boot-litmus.scr"
# Assumes the globals:
# - KVERSION
# - CONFIG_FILE - kernel configuration file name (not path)
# - LOAD_ADDR
# - ENTRY_PIONT
#
# Assumes UBOOT_PATH is set by the calling script.
TMP_DIR=$(mktemp -d)
# initramfs state directory (Debian/Ubuntu)
INITRAMFS_STATEDIR="/var/lib/initramfs-tools"
# Where the modules live (not in /lib/modules). This is relative to my homedir.
MODULES_PATH="modules"
error() {
echo "$@" >&2
exit 1
}
KERN_DIR=$1
BOOT_TXT=${2-""}
if [ ! -z "$BOOT_TXT" -o -f "$BOOT_TXT" ] ; then
error "Boot script TXT not a file: $BOOT_TXT"
fi
getversion() {
local version
set +e
version=$(ssh $USER@$HOST cat $KERN_DIR/include/config/kernel.release)
set -e
if [ "x" = "x$version" ] ; then
error "Could not determine version"
fi
echo "$version"
}
fetchfiles() {
echo "Fetching files from $HOST ..." >&2
rsync -P $USER@$HOST:$KERN_DIR/arch/arm/boot/zImage "$TMP_DIR/$ZIMAGE_FILE"
rsync -P $USER@$HOST:$KERN_DIR/.config "$TMP_DIR/$CONFIG_FILE"
echo "done." >&2
local remotemodules
local havemodules
remotemodules="$MODULES_PATH/$KVERSION/lib/modules/$KVERSION"
set +e
ssh $USER@$HOST "test -e $remotemodules"
havemodules=$?
set -e
if [ $havemodules -ne 0 ] ; then
echo "No modules found." >&2
if [ -d "/lib/modules/$KVERSION" ] ; then
echo "Removing old modules ..." >&2
sudo rm -rf "/lib/modules/$KVERSION"
echo "done." >&2
fi
else
echo "Copying modules ..." >&2
sudo rsync -aP --delete $USER@$HOST:$remotemodules /lib/modules/
echo "done." >&2
fi
}
mkuboot() {
echo "Generating kernel u-boot image..." >&2
mkimage -A arm -O linux -T kernel -C none \
-a $LOAD_ADDR -e $ENTRY_POINT \
-d $TMP_DIR/$ZIMAGE_FILE $TMP_DIR/$UIMAGE_FILE >&2
out_image=$TMP_DIR/$UIMAGE_FILE
echo "done." >&2
}
mkscript() {
echo "Generating u-boot configuration ... " >&2
mkimage -A arm -T script -C none -d "$BOOT_TXT" $TMP_DIR/$SCRIPT_FILE >&2
echo "done." >&2
}
moveconfig() {
echo "Moving config file to /boot ..." >&2
sudo cp "$TMP_DIR/$CONFIG_FILE" /boot/
echo "done." >&2
}
doinitramfs() {
local initrdimage
initrdimage="/boot/initrd.img-$KVERSION"
if [ -e "$INITRAMFS_STATEDIR/$KVERSION" -o -e "$initrdimage" ] ; then
echo "Removing old initramfs ... " >&2
sudo update-initramfs -k $KVERSION -d
echo "done." >&2
fi
echo "Creating initramfs (ignore module errors) ... " >&2
sudo update-initramfs -k $KVERSION -c
echo "done." >&2
}
mkuinitrd() {
local initrdimage
initrdimage="/boot/initrd.img-$KVERSION"
echo "Making u-boot initrd image ... " >&2
mkimage -A arm -O linux -T ramdisk -C none \
-d $initrdimage $TMP_DIR/$INITRD_FILE >&2
echo "done." >&2
}
copy_to_uboot() {
echo "Copying files to u-boot partition ..." >&2
sudo cp $TMP_DIR/$UIMAGE_FILE $UBOOT_PATH/
sudo cp $TMP_DIR/$SCRIPT_FILE $UBOOT_PATH/
sudo cp $TMP_DIR/$INITRD_FILE $UBOOT_PATH/
echo "done." >&2
}
rm_tmp_files() {
echo "Removing temporary files ..." >&2
rm -rf $TMP_DIR
echo "done." >&2
}
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