a7a79fa1f5
Scripts for generating boot-to-ramdisk images are now available. These can be used for example to boot from PXE or from a USB stick, as the ramdisk are self-contained and do not rely on any block devices after being loaded into RAM. The image generation framework has also been slightly cleaned up in order to better accomodate tarball sets bundling in images. Change-Id: I65a176832bd0d6954b430fa8305f90af0bd606c1
111 lines
3.6 KiB
Bash
Executable File
111 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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#
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# This script creates a bootable image and should at some point in the future
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# be replaced by the proper NetBSD infrastructure.
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#
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: ${ARCH=i386}
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: ${OBJ=../obj.${ARCH}}
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: ${TOOLCHAIN_TRIPLET=i586-elf32-minix-}
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: ${BUILDSH=build.sh}
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: ${SETS="minix-base minix-comp minix-games minix-man minix-tests tests"}
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: ${IMG=minix_x86.img}
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if [ ! -f ${BUILDSH} ]
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then
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echo "Please invoke me from the root source dir, where ${BUILDSH} is."
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exit 1
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fi
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# we create a disk image of about 2 gig's
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# for alignment reasons, prefer sizes which are multiples of 4096 bytes
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: ${BOOTXX_SECS=32}
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: ${ROOT_SIZE=$(( 128*(2**20) - ${BOOTXX_SECS} * 512 ))}
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: ${HOME_SIZE=$(( 128*(2**20) ))}
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: ${USR_SIZE=$(( 1792*(2**20) ))}
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# set up disk creation environment
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. releasetools/image.defaults
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. releasetools/image.functions
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echo "Building work directory..."
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build_workdir "$SETS"
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echo "Adding extra files..."
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workdir_add_hdd_files
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# add kernels
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add_link_spec "boot/minix_latest" "minix_default" extra.kernel
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workdir_add_kernel minix_default
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workdir_add_kernel minix/$RELEASE_VERSION
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# add boot.cfg
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cat >${ROOT_DIR}/boot.cfg <<END_BOOT_CFG
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menu=Start MINIX 3:load_mods /boot/minix_default/mod*; multiboot /boot/minix_default/kernel rootdevname=c0d0p0
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menu=Start latest MINIX 3:load_mods /boot/minix_latest/mod*; multiboot /boot/minix_latest/kernel rootdevname=c0d0p0
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menu=Start latest MINIX 3 in single user mode:load_mods /boot/minix_latest/mod*; multiboot /boot/minix_latest/kernel rootdevname=c0d0p0 bootopts=-s
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menu=Start MINIX 3 ALIX:load_mods /boot/minix_default/mod*;multiboot /boot/minix_default/kernel rootdevname=c0d0p0 console=tty00 consdev=com0 ata_no_dma=1
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menu=Edit menu option:edit
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menu=Drop to boot prompt:prompt
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clear=1
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timeout=5
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default=2
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menu=Start MINIX 3 ($RELEASE_VERSION):load_mods /boot/minix/$RELEASE_VERSION/mod*; multiboot /boot/minix/$RELEASE_VERSION/kernel rootdevname=c0d0p0
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END_BOOT_CFG
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add_file_spec "boot.cfg" extra.boot
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echo "Bundling packages..."
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bundle_packages "$BUNDLE_PACKAGES"
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echo "Creating specification files..."
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create_input_spec
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create_protos "usr home"
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# Clean image
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if [ -f ${IMG} ] # IMG might be a block device
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then
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rm -f ${IMG}
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fi
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#
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# Generate /root, /usr and /home partition images.
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#
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echo "Writing disk image..."
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# all sizes are written in 512 byte blocks
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ROOTSIZEARG="-b $((${ROOT_SIZE} / 512 / 8))"
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USRSIZEARG="-b $((${USR_SIZE} / 512 / 8))"
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HOMESIZEARG="-b $((${HOME_SIZE} / 512 / 8))"
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ROOT_START=${BOOTXX_SECS}
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echo " * ROOT"
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_ROOT_SIZE=$(${CROSS_TOOLS}/nbmkfs.mfs -d ${ROOTSIZEARG} -I $((${ROOT_START}*512)) ${IMG} ${WORK_DIR}/proto.root)
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_ROOT_SIZE=$(($_ROOT_SIZE / 512))
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USR_START=$((${ROOT_START} + ${_ROOT_SIZE}))
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echo " * USR"
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_USR_SIZE=$(${CROSS_TOOLS}/nbmkfs.mfs -d ${USRSIZEARG} -I $((${USR_START}*512)) ${IMG} ${WORK_DIR}/proto.usr)
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_USR_SIZE=$(($_USR_SIZE / 512))
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HOME_START=$((${USR_START} + ${_USR_SIZE}))
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echo " * HOME"
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_HOME_SIZE=$(${CROSS_TOOLS}/nbmkfs.mfs -d ${HOMESIZEARG} -I $((${HOME_START}*512)) ${IMG} ${WORK_DIR}/proto.home)
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_HOME_SIZE=$(($_HOME_SIZE / 512))
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#
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# Write the partition table using the natively compiled
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# minix partition utility
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#
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${CROSS_TOOLS}/nbpartition -m ${IMG} ${BOOTXX_SECS} 81:${_ROOT_SIZE} 81:${_USR_SIZE} 81:${_HOME_SIZE}
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${CROSS_TOOLS}/nbinstallboot -f -m ${ARCH} ${IMG} ${DESTDIR}/usr/mdec/bootxx_minixfs3
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echo ""
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echo "Disk image at `pwd`/${IMG}"
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echo ""
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echo "To boot this image on kvm using the bootloader:"
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echo "qemu-system-i386 --enable-kvm -m 256 -hda `pwd`/${IMG}"
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echo ""
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echo "To boot this image on kvm:"
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echo "cd ${MODDIR} && qemu-system-i386 --enable-kvm -m 256M -kernel kernel -append \"rootdevname=c0d0p0\" -initrd \"${mods}\" -hda `pwd`/${IMG}"
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