PXE boot generation script
Leveraging the new image generation framework, MINIX has now turn-key PXE booting capability. The booting process uses SYSLINUX, licensed under GPL2+. Due to the lack of NFS support, a ramdisk is provided as a root device. The generated ramdisk is quite huge for a network boot, but it can be trimmed down at a later date.
This commit is contained in:
Jean-Baptiste Boric
parent
135965dc20
commit
da7dc4d54c
14
etc/rc
14
etc/rc
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@ -1,5 +1,10 @@
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# /etc/rc - System startup script run by init before going multiuser.
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if sysenv bootramdisk >/dev/null
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then
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/bin/sh /etc/rc.ramdisk
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fi
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# Are we booting from CD?
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bootcd="`/bin/sysenv bootcd`"
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@ -138,9 +143,12 @@ autoboot|start)
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fsck -x / $fflag $fsckopts
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mount -a
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# Unmount and free now defunct ramdisk
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umount /dev/imgrd > /dev/null || echo "Failed to unmount boot ramdisk"
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ramdisk 0 /dev/imgrd || echo "Failed to free boot ramdisk"
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if [ -z "`sysenv bootramdisk`" ]
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then
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# Unmount and free now defunct ramdisk
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umount /dev/imgrd > /dev/null || echo "Failed to unmount boot ramdisk"
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ramdisk 0 /dev/imgrd || echo "Failed to free boot ramdisk"
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fi
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# Initialize files.
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>/var/run/utmp # /etc/utmp keeps track of logins
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@ -55,7 +55,7 @@ fi
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if /bin/sysenv rootdevname >/dev/null
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then rootdevname=/dev/`/bin/sysenv rootdevname`
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else
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if ! sysenv cdproberoot >/dev/null
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if (! sysenv cdproberoot) && (! sysenv bootramdisk) >/dev/null
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then echo "rootdevname not set"
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exit 1
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fi
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@ -81,6 +81,11 @@ then
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loadramdisk "$ramimagename" || echo "WARNING: loadramdisk failed"
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fi
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if sysenv bootramdisk >/dev/null
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then
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rootdevname=imgrd
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fi
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echo "Root device name is $rootdevname"
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if ! sysenv cdproberoot >/dev/null
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@ -92,8 +97,14 @@ fi
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# Change root from temporary boot ramdisk to the configure
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# root device
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/bin/mount -n $bin_img"$rootdevname" /
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if ! sysenv bootramdisk >/dev/null
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then
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/bin/mount -n $bin_img"$rootdevname" /
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fi
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/bin/mount -e -n -t procfs none /proc || echo "WARNING: couldn't mount procfs"
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exec /bin/sh /etc/rc `sysenv bootopts` "$@"
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if ! sysenv bootramdisk >/dev/null
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then
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exec /bin/sh /etc/rc `sysenv bootopts` "$@"
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fi
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58
releasetools/fetch.functions
Normal file
58
releasetools/fetch.functions
Normal file
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@ -0,0 +1,58 @@
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#!/bin/sh
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#
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# Common logic to perform checkout of repos
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#
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# -o output dir
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OUTPUT_DIR=""
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GIT_VERSION=""
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while getopts "o:n:?" c
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do
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case "$c" in
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\?)
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echo "Usage: $0 -o output dir -n version " >&2
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exit 1
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;;
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o)
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OUTPUT_DIR=$OPTARG
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;;
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n)
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GIT_VERSION=$OPTARG
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;;
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esac
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done
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#
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# check arguments
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#
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if [ -z "$OUTPUT_DIR" -o -z "$GIT_VERSION" ]
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then
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echo "Missing required parameters OUTPUT_DIR=$OUTPUT_DIR GIT_VERSION=$GIT_VERSION"
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echo "Usage: $0 -o output dir -n version " >&2
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exit 1
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fi
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#
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# if the file doesn't exist it's easy , to a checkout
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#
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if [ ! -e "$OUTPUT_DIR" ]
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then
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git clone ${REPO_URL} -b minix $OUTPUT_DIR
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fi
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(
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cd "$OUTPUT_DIR"
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#
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# perform an update
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#
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CURRENT_VERSION=`git rev-parse HEAD`
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if [ "$CURRENT_VERSION" != "$GIT_VERSION" ]
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then
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echo "Current version $CURRENT_VERSION does not match wanted $GIT_VERSION performing update and checkout"
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git fetch -v
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git checkout $GIT_VERSION
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fi
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)
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8
releasetools/fetch_syslinux.sh
Executable file
8
releasetools/fetch_syslinux.sh
Executable file
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@ -0,0 +1,8 @@
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#!/bin/sh
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#
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# Perform a checkout / update the MINIX PXELINUX git repo if needed
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#
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: ${REPO_URL=https://github.com/boricj/syslinux.git}
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. releasetools/fetch.functions
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@ -1,59 +1,8 @@
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#!/bin/sh
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#!/bin/sh
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#
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# Perform a checkout / update the MINIX u-boot git repo if needed
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#
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: ${UBOOT_REPO_URL=git://git.minix3.org/u-boot}
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# -o output dir
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OUTPUT_DIR=""
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GIT_VERSION=""
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while getopts "o:n:?" c
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do
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case "$c" in
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\?)
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echo "Usage: $0 -o output dir -n version " >&2
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exit 1
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;;
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o)
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OUTPUT_DIR=$OPTARG
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;;
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n)
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GIT_VERSION=$OPTARG
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;;
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esac
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done
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#
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# check arguments
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#
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if [ -z "$OUTPUT_DIR" -o -z "$GIT_VERSION" ]
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then
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echo "Missing required parameters OUTPUT_DIR=$OUTPUT_DIR GIT_VERSION=$GIT_VERSION"
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echo "Usage: $0 -o output dir -n version " >&2
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exit 1
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fi
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: ${REPO_URL=git://git.minix3.org/u-boot}
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#
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# if the file doesn't exist it's easy , to a checkout
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#
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if [ ! -e "$OUTPUT_DIR" ]
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then
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git clone ${UBOOT_REPO_URL} -b minix $OUTPUT_DIR
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fi
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(
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cd "$OUTPUT_DIR"
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#
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# perform an update
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#
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CURRENT_VERSION=`git rev-parse HEAD`
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if [ "$CURRENT_VERSION" != "$GIT_VERSION" ]
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then
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echo "Current version $CURRENT_VERSION does not match wanted $GIT_VERSION performing update and checkout"
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git fetch -v
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git checkout $GIT_VERSION
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fi
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)
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. releasetools/fetch.functions
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@ -18,3 +18,5 @@
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: ${RC=../local/rc.${ARCH}}
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: ${ASR_HACK=0}
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: ${SYSLINUX_GIT_VERSION=d00acec90ccc5e05e5b80bfd96d17c4dc4a7d36e}
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@ -184,6 +184,20 @@ create_protos()
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done
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}
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#
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# Create ramdisk image from root directory
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#
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# $1 : size of ramdisk
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create_ramdisk_image()
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{
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PATH=$(cd ${CROSS_TOOLS}; pwd):$PATH
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# Build image
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_RAMDISKSIZE=$(${CROSS_TOOLS}/nbmkfs.mfs -d -b $1 -I 0 ${WORK_DIR}/imgrd.mfs ${WORK_DIR}/proto.root)
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(cd ${WORK_DIR}; ${TOOLCHAIN_TRIPLET}objcopy -Ibinary -Bi386 -Oi586-elf32-minix imgrd.mfs imgrd.o)
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${TOOLCHAIN_TRIPLET}clang --sysroot=${DESTDIR} -L ${DESTDIR}/usr/lib -static -o ${WORK_DIR}/mod06_memory ${OBJ}/minix/drivers/storage/memory/memory.o ${WORK_DIR}/imgrd.o -nodefaultlibs -lblockdriver -lchardriver -lsys -lminc
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}
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#
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# Bundle packages (won't preinstall them)
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#
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8
releasetools/release/pxe/etc/issue
Normal file
8
releasetools/release/pxe/etc/issue
Normal file
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@ -0,0 +1,8 @@
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Welcome to MINIX.
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The system is now running and many commands work normally. To use MINIX
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in a serious way, you need to install it to your hard disk.
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Type "root" at the login prompt, and hit enter.
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Note: the setup script can't be used when booting over the network.
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83
releasetools/x86_pxeimage.sh
Executable file
83
releasetools/x86_pxeimage.sh
Executable file
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@ -0,0 +1,83 @@
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#!/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"}
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: ${IMG=minix_x86_usb.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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# set up disk creation environment
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. releasetools/image.defaults
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. releasetools/image.functions
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: ${RAMDISK_SIZE=$(( 200*(2**20) / 512 / 8 ))}
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# where the kernel & boot modules will be
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MODDIR=${DESTDIR}/boot/minix/.temp
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echo "Fetching syslinux..."
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${RELEASETOOLSDIR}/fetch_syslinux.sh -o ${RELEASETOOLSDIR}/syslinux -n $SYSLINUX_GIT_VERSION
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echo "Building work directory..."
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build_workdir "$SETS"
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echo "Adding extra files..."
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# create a fstab entry in /etc
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cat >${ROOT_DIR}/etc/fstab <<END_FSTAB
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none /sys devman rw,rslabel=devman 0 0
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none /dev/pts ptyfs rw,rslabel=ptyfs 0 0
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END_FSTAB
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add_file_spec "etc/fstab" extra.fstab
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cp minix/drivers/storage/ramdisk/rc ${ROOT_DIR}/etc/rc.ramdisk
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add_file_spec "etc/rc.ramdisk" extra.fstab
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cp releasetools/release/pxe/etc/issue ${ROOT_DIR}/etc/issue
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add_file_spec "etc/issue" extra.cdfiles
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echo "Bundling packages..."
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bundle_packages "$BUNDLE_PACKAGES"
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echo "Creating specification files..."
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create_input_spec
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create_protos
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echo "Writing ramdisk image..."
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cp ${MODDIR}/* ${WORK_DIR}
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create_ramdisk_image ${RAMDISK_SIZE}
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echo "Preparing PXE boot directory..."
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mkdir ${WORK_DIR}/pxelinux.cfg
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cat >${WORK_DIR}/pxelinux.cfg/default <<EOF
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DEFAULT menu.c32
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TIMEOUT 100
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LABEL x86
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MENU LABEL Minix3
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KERNEL mboot.c32
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APPEND kernel bootramdisk=1 --- mod01_ds --- mod02_rs --- mod03_pm --- mod04_sched --- mod05_vfs --- mod06_memory --- mod07_tty --- mod08_mib --- mod09_vm --- mod10_pfs --- mod11_mfs --- mod12_init
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EOF
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cp ${RELEASETOOLSDIR}/syslinux/bios/com32/elflink/ldlinux/ldlinux.c32 ${WORK_DIR}/
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cp ${RELEASETOOLSDIR}/syslinux/bios/com32/lib/libcom32.c32 ${WORK_DIR}/
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cp ${RELEASETOOLSDIR}/syslinux/bios/com32/libutil/libutil.c32 ${WORK_DIR}/
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cp ${RELEASETOOLSDIR}/syslinux/bios/com32/mboot/mboot.c32 ${WORK_DIR}/
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cp ${RELEASETOOLSDIR}/syslinux/bios/com32/menu/menu.c32 ${WORK_DIR}/
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cp ${RELEASETOOLSDIR}/syslinux/bios/core/pxelinux.0 ${WORK_DIR}/
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rm -rf ${WORK_DIR}/extra.* ${WORK_DIR}/set.* ${WORK_DIR}/proto.* ${WORK_DIR}/imgrd.mfs ${WORK_DIR}/imgrd.o
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echo "PXE boot directory at ${WORK_DIR}"
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echo "To boot this image on kvm:"
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echo "cd ${WORK_DIR} && qemu-system-i386 --enable-kvm -m 512M -tftp . -bootp pxelinux.0 -boot n"
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