65 lines
2.1 KiB
Bash
Executable File
65 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# This script generates the dummy HFS filesystem used for the PowerPC boot
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# blocks. It uses hfsutils (emulators/hfsutils) to generate a template
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# filesystem with the relevant interesting files. These are then found by
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# grep, and the offsets written to a Makefile snippet.
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#
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# Because of licensing concerns, and because it is overkill, we do not
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# distribute hfsutils as a build tool. If you need to regenerate the HFS
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# template (e.g. because the boot block or the CHRP script have grown),
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# you must install it from ports.
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# $FreeBSD$
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HFS_SIZE=1600 #Size in 512-byte blocks of the produced image
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CHRPBOOT_SIZE=2k
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BOOT1_SIZE=64k
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# Generate 800K HFS image
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OUTPUT_FILE=hfs.tmpl
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dd if=/dev/zero of=$OUTPUT_FILE bs=512 count=$HFS_SIZE
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hformat -l "FreeBSD Bootstrap" $OUTPUT_FILE
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hmount $OUTPUT_FILE
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# Create and bless a directory for the boot loader
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hmkdir ppc
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hattrib -b ppc
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hcd ppc
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# Make two dummy files for the CHRP boot script and boot1
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echo 'Bootinfo START' | dd of=bootinfo.txt.tmp cbs=$CHRPBOOT_SIZE count=1 conv=block
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echo 'Boot1 START' | dd of=boot1.elf.tmp cbs=$BOOT1_SIZE count=1 conv=block
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hcopy boot1.elf.tmp :boot1.elf
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hcopy bootinfo.txt.tmp :bootinfo.txt
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hattrib -c chrp -t tbxi bootinfo.txt
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humount
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rm bootinfo.txt.tmp
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rm boot1.elf.tmp
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# Locate the offsets of the two fake files
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BOOTINFO_OFFSET=$(hd $OUTPUT_FILE | grep 'Bootinfo START' | cut -f 1 -d ' ')
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BOOT1_OFFSET=$(hd $OUTPUT_FILE | grep 'Boot1 START' | cut -f 1 -d ' ')
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# Convert to numbers of blocks
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BOOTINFO_OFFSET=$(echo 0x$BOOTINFO_OFFSET | awk '{printf("%x\n",$1/512);}')
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BOOT1_OFFSET=$(echo 0x$BOOT1_OFFSET | awk '{printf("%x\n",$1/512);}')
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echo '# This file autogenerated by generate-hfs.sh - DO NOT EDIT' > Makefile.hfs
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echo '# $FreeBSD$' >> Makefile.hfs
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echo "BOOTINFO_OFFSET=0x$BOOTINFO_OFFSET" >> Makefile.hfs
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echo "BOOT1_OFFSET=0x$BOOT1_OFFSET" >> Makefile.hfs
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bzip2 $OUTPUT_FILE
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echo 'HFS template boot filesystem created by generate-hfs.sh' > $OUTPUT_FILE.bz2.uu
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echo 'DO NOT EDIT' >> $OUTPUT_FILE.bz2.uu
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echo '$FreeBSD$' >> $OUTPUT_FILE.bz2.uu
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uuencode $OUTPUT_FILE.bz2 $OUTPUT_FILE.bz2 >> $OUTPUT_FILE.bz2.uu
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rm $OUTPUT_FILE.bz2
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