1#!/bin/sh 2 3# This script generates the dummy HFS filesystem used for the PowerPC boot 4# blocks. It uses hfsutils (emulators/hfsutils) to generate a template 5# filesystem with the relevant interesting files. These are then found by 6# grep, and the offsets written to a Makefile snippet. 7# 8# Because of licensing concerns, and because it is overkill, we do not 9# distribute hfsutils as a build tool. If you need to regenerate the HFS 10# template (e.g. because the boot block or the CHRP script have grown), 11# you must install it from ports. 12 13# $FreeBSD$ 14 15HFS_SIZE=1600 #Size in 512-byte blocks of the produced image 16 17CHRPBOOT_SIZE=2k 18BOOT1_SIZE=64k 19 20# Generate 800K HFS image 21OUTPUT_FILE=hfs.tmpl 22 23dd if=/dev/zero of=$OUTPUT_FILE bs=512 count=$HFS_SIZE 24hformat -l "FreeBSD Bootstrap" $OUTPUT_FILE 25hmount $OUTPUT_FILE 26 27# Create and bless a directory for the boot loader 28hmkdir ppc 29hattrib -b ppc 30hcd ppc 31 32# Make two dummy files for the CHRP boot script and boot1 33echo 'Bootinfo START' | dd of=bootinfo.txt.tmp cbs=$CHRPBOOT_SIZE count=1 conv=block 34echo 'Boot1 START' | dd of=boot1.elf.tmp cbs=$BOOT1_SIZE count=1 conv=block 35 36hcopy boot1.elf.tmp :boot1.elf 37hcopy bootinfo.txt.tmp :bootinfo.txt 38hattrib -c chrp -t tbxi bootinfo.txt 39humount 40 41rm bootinfo.txt.tmp 42rm boot1.elf.tmp 43 44# Locate the offsets of the two fake files 45BOOTINFO_OFFSET=$(hd $OUTPUT_FILE | grep 'Bootinfo START' | cut -f 1 -d ' ') 46BOOT1_OFFSET=$(hd $OUTPUT_FILE | grep 'Boot1 START' | cut -f 1 -d ' ') 47 48# Convert to numbers of blocks 49BOOTINFO_OFFSET=$(echo 0x$BOOTINFO_OFFSET | awk '{printf("%x\n",$1/512);}') 50BOOT1_OFFSET=$(echo 0x$BOOT1_OFFSET | awk '{printf("%x\n",$1/512);}') 51 52echo '# This file autogenerated by generate-hfs.sh - DO NOT EDIT' > Makefile.hfs 53echo '# $FreeBSD$' >> Makefile.hfs 54echo "BOOTINFO_OFFSET=0x$BOOTINFO_OFFSET" >> Makefile.hfs 55echo "BOOT1_OFFSET=0x$BOOT1_OFFSET" >> Makefile.hfs 56 57bzip2 $OUTPUT_FILE 58echo 'HFS template boot filesystem created by generate-hfs.sh' > $OUTPUT_FILE.bz2.uu 59echo 'DO NOT EDIT' >> $OUTPUT_FILE.bz2.uu 60echo '$FreeBSD$' >> $OUTPUT_FILE.bz2.uu 61 62uuencode $OUTPUT_FILE.bz2 $OUTPUT_FILE.bz2 >> $OUTPUT_FILE.bz2.uu 63rm $OUTPUT_FILE.bz2 64 65