#!/bin/sh

# lh_binary_yaboot(1) - installs yaboot into binary
# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
#
# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
# This is free software, and you are welcome to redistribute it
# under certain conditions; see COPYING for details.

set -e

# Including common functions
LH_BASE="${LH_BASE:-/usr/share/live-helper}"

for FUNCTION in "${LH_BASE}"/functions/*.sh
do
	. "${FUNCTION}"
done

# Setting static variables
DESCRIPTION="installs yaboot into binary"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffile config/common
Read_conffile config/bootstrap
Read_conffile config/chroot
Read_conffile config/binary
Read_conffile config/source
Set_defaults

if [ "${LIVE_BOOTLOADER}" != "yaboot" ]
then
	exit 0
fi

Echo_message "Begin installing yaboot..."

# Requiring stage file
Require_stagefile .stage/bootstrap

# Checking stage file
Check_stagefile .stage/binary_yaboot

# Checking yaboot templates
Check_templates yaboot

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Check architecture
Check_architecture powerpc ppc64

# Checking depends
Check_package chroot/usr/lib/yaboot/yaboot yaboot

# Installing depends
Install_package

# Local functions
Yaboot_live_entry ()
{
	LABEL="${1}"
	KERNEL="${2}"
	INITRD="${3}"
	APPEND="${4}"

	DIRECTORY="/`basename ${DESTDIR_LIVE}`"

	LINUX_LIVE="${LINUX_LIVE}\nimage=${DIRECTORY}/${KERNEL}\n"
	LINUX_LIVE="${LINUX_LIVE}\tlabel=${LABEL}\n"
	LINUX_LIVE="${LINUX_LIVE}\tinitrd=${DIRECTORY}/${INITRD}\n"
	LINUX_LIVE="${LINUX_LIVE}\tappend=\"boot=${INITFS} LIVE_BOOTAPPEND ${APPEND}\"\n"
	LINUX_LIVE="${LINUX_LIVE}\tinitrd-size=10240\n"
}

Yaboot_install_entry ()
{
	LABEL="${1}"
	KERNEL="${2}"
	INITRD="${3}"
	APPEND="${4}"

	DIRECTORY="/`basename ${DESTDIR_LIVE}`"

	if [ "${LIVE_DISTRIBUTION}" != "etch" ] && [ "${LABEL}" != "rescue" ] && [ "${LABEL}" != "rescuegui" ]
	then
		APPEND="${APPEND} quiet"
	fi

	LINUX_INSTALL="${LINUX_INSTALL}\nimage=${DIRECTORY}/${KERNEL}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\tlabel=${LABEL}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\tinitrd=${DIRECTORY}/${INITRD}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\tappend=\"LIVE_BOOTAPPEND ${APPEND} --\"\n"
	LINUX_INSTALL="${LINUX_INSTALL}\tinitrd-size=10240\n"
}

case "${LH_INITRAMFS}" in
	casper)
		INITFS="casper"
		;;

	live-initramfs)
		INITFS="live"
		;;
esac

# Setting destination directory
case "${LIVE_BINARY_IMAGES}" in
	iso)
		case "${LH_INITRAMFS}" in
			casper)
				DESTDIR_LIVE="binary/casper"
				;;

			live-initramfs)
				DESTDIR_LIVE="binary/live"
				;;
		esac

		DESTDIR_INSTALL="binary/install"
		;;

	net|tar|usb-hdd)
		Echo_error "not yet supported, aborting (FIXME)."
		exit 1
	;;
esac

Check_multiarchitecture

# Creating directory
mkdir -p "${DESTDIR_LIVE}"

# Setting boot parameters
if [ -n "${LIVE_ENCRYPTION}" ]
then
	LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} encryption=${LIVE_ENCRYPTION}"
fi

if [ -n "${LIVE_USERNAME}" ]
then
	case "${LH_INITRAMFS}" in
		casper)
			LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} username=${LIVE_USERNAME}"
			;;

		live-initramfs)
			if [ "${LIVE_USERNAME}" != "user" ]
			then
				LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} username=${LIVE_USERNAME}"
			fi
			;;
	esac
fi

if [ -n "${LIVE_HOSTNAME}" ]
then
	case "${LH_INITRAMFS}" in
		casper)
			LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} hostname=${LIVE_HOSTNAME}"
			;;

		live-initramfs)
			if [ "${LIVE_HOSTNAME}" != "debian" ]
			then
				LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} hostname=${LIVE_HOSTNAME}"
			fi
			;;
	esac
fi

if [ "${LIVE_UNION_FILESYSTEM}" != "unionfs" ]
then
	LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} union=${LIVE_UNION_FILESYSTEM}"
fi

LIVE_BOOTAPPEND="`echo ${LIVE_BOOTAPPEND} | sed -e 's/  //'`"

# Parameters are listed at: linux/Documentation/kernel-parameters.txt
FAILSAFE="noapic noapm nodma nomce nolapic nosmp vga=ofonly"

# Assembling kernel configuration

# Default entries
DEFAULT_FLAVOUR="`echo ${LIVE_LINUX_FLAVOURS} | awk '{ print $1 }'`"
DEFAULT_KERNEL="`basename chroot/boot/vmlinux-*${DEFAULT_FLAVOUR}`"
DEFAULT_INITRD="initrd.img-`echo ${DEFAULT_KERNEL} | sed -e 's/vmlinux-//'`"

Yaboot_live_entry "live" "${DEFAULT_KERNEL}" "${DEFAULT_INITRD}"
Yaboot_live_entry "live-failsafe" "${DEFAULT_KERNEL}" "${DEFAULT_INITRD}" "${FAILSAFE}"

if [ "`echo ${LIVE_LINUX_FLAVOURS} | wc -w`" -gt "1" ]
then
	for KERNEL in chroot/boot/vmlinux-*
	do
		KERNEL_IMAGE="`basename ${KERNEL}`"
		KERNEL_VERSION="`echo ${KERNEL_IMAGE} | sed -e 's/vmlinux-//'`"
		INITRD="initrd.img-${KERNEL_VERSION}"

		Yaboot_live_entry "live-${KERNEL_VERSION}" "${KERNEL_IMAGE}" "${INITRD}"
		Yaboot_live_entry "live-${KERNEL_VERSION}-failsafe" "${KERNEL_IMAGE}" "${INITRD}" "${FAILSAFE}"
	done
fi

LINUX_LIVE="`echo ${LINUX_LIVE} | sed -e 's/binary//g' -e 's#//#/#g'`"

# Assembling debian-installer configuration
if [ "${LIVE_DEBIAN_INSTALLER}" != "disabled" ]
then
	VMLINUZ_DI="vmlinuz"
	INITRD_DI="initrd.gz"
	APPEND_DI="vga=normal"

	VMLINUZ_GI="gtk/vmlinuz"
	INITRD_GI="gtk/initrd.gz"
	APPEND_GI="video=vesa:ywrap,mtrr vga=788"

	Yaboot_install_entry "linux" "${VMLINUZ_DI}" "${INITRD_DI}" "${APPEND_DI}"
	Yaboot_install_entry "install" "${VMLINUZ_DI}" "${INITRD_DI}" "${APPEND_DI}"
	Yaboot_install_entry "installgui" "${VMLINUZ_GI}" "${INITRD_GI}" "${APPEND_GI}"
	Yaboot_install_entry "expert" "${VMLINUZ_DI}" "${INITRD_DI}" "priority=low ${APPEND_DI}"
	Yaboot_install_entry "expertgui" "${VMLINUZ_GI}" "${INITRD_GI}" "priority=low ${APPEND_GI}"
	Yaboot_install_entry "rescue" "${VMLINUZ_DI}" "${INITRD_DI}" "rescue/enable=true ${APPEND_DI}"
	Yaboot_install_entry "rescuegui" "${VMLINUZ_GI}" "${INITRD_GI}" "rescue/enable=true ${APPEND_GI}"
	Yaboot_install_entry "auto" "${VMLINUZ_DI}" "${INITRD_DI}" "auto=true priority=critical ${APPEND_DI}"
	Yaboot_install_entry "autogui" "${VMLINUZ_GI}" "${INITRD_GI}" "auto=true priority=critical ${APPEND_GI}"
fi

LINUX_INSTALL="`echo ${LINUX_INSTALL} | sed -e 's/binary//g' -e 's#//#/#g'`"

case "${LIVE_BINARY_IMAGES}" in
	iso|usb-hdd)
		# Copying yaboot
		mkdir -p binary/yaboot
		cp chroot/usr/lib/yaboot/yaboot binary/yaboot
		cp -r "${LIVE_TEMPLATES}"/yaboot/* binary/yaboot

		if [ "${LIVE_BINARY_IMAGES}" = "usb-hdd" ]
		then
			mv binary/yaboot/yaboot.conf binary/yaboot/yaboot.conf.tmp
			echo "root=/dev/ram" > binary/yaboot/yaboot.conf
			cat binary/yaboot/yaboot.conf.tmp >> binary/yaboot/yaboot.conf
			rm -f binary/yaboot/yaboot.conf.tmp
		fi

		# Configure yaboot templates
		sed -i -e "s#LINUX_LIVE#${LINUX_LIVE}#" -e "s#LINUX_INSTALL#${LINUX_INSTALL}#" binary/yaboot/yaboot.conf
		sed -i -e "s#LIVE_BOOTAPPEND#${LIVE_BOOTAPPEND}#" binary/yaboot/yaboot.conf
		sed -i -e "s/LIVE_DATE/`date +%Y%m%d`/" -e "s/LIVE_VERSION/${VERSION}/" binary/yaboot/boot.msg
		;;
esac

# Removing depends
Remove_package

# Creating stage file
Create_stagefile .stage/binary_yaboot