79 lines
2.5 KiB
Bash
79 lines
2.5 KiB
Bash
#!/bin/sh
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# Copyright (C) 2016 Arista Networks, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Aboot stage 0 boot
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set -x
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bootconfigvars="SWI SWI_COPY POST_LEVEL CONSOLESPEED PASSWORD NETDEV NETAUTO NETIP NETMASK NETGW NETDOMAIN NETDNS NETHW memtest"
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parseenvironmentconfig() {
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for n in ${bootconfigvars}; do
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eval v="\$$n"
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if [ "$v" ]; then
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echo "$n=$v"
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fi
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done
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}
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kernel=boot/vmlinuz-3.16.0-4-amd64
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initrd=boot/initrd.img-3.16.0-4-amd64
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TARGET_PATH=/mnt/flash
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if [ -d "${swipath}" ]; then
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# Not expect a directory name for swipath
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exit 1
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fi
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## Check the hash file in the image, and determine to install or just skip
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GIT_REVISION=$(unzip -p ${swipath} .imagehash)
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LOCAL_IMAGEHASH=$(cat $TARGET_PATH/.imagehash 2>/dev/null || true)
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if [ "$GIT_REVISION" != "$LOCAL_IMAGEHASH" ]; then
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## Clean old directory for read-write layer
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rm -rf ${TARGET_PATH}/rw
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## Unzip the image
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unzip -oq ${swipath} -x boot0 -d ${TARGET_PATH}
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## Detect SKU and create a hardware description file
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aboot_version=`grep ^Aboot /etc/cmdline | sed 's/^.*norcal.-//'`
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aboot_build_date=`stat -c %y /bin/sysinit | sed 's/ /T/'`
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if `grep -q platform=raven /etc/cmdline`; then
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aboot_machine=arista_7050_qx32
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else
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aboot_machine=arista_7050_qx32s
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fi
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cat <<EOF > ${TARGET_PATH}/machine.conf
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aboot_version=$aboot_version
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aboot_vendor=arista
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aboot_platform=x86_64-$aboot_machine
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aboot_machine=$aboot_machine
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aboot_arch=x86_64
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aboot_build_date=$aboot_build_date
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EOF
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fi
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echo "${append}" >/tmp/append
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parseenvironmentconfig >>/tmp/append
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cat /etc/cmdline | sed "/^\(${bootconfigvars// /\|}\|crashkernel\|loglevel\|ignore_loglevel\)\(\$\|=\)/d;/^\$/d" >>/tmp/append
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echo "root=/dev/sda1 rw loop=fs.squashfs loopfstype=squashfs apparmor=1 security=apparmor quiet" >>/tmp/append
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kexec --load --initrd=${TARGET_PATH}/${initrd} --append="$(tr '\n' ' ' </tmp/append)" ${TARGET_PATH}/${kernel}
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[ -z "${testonly}" ] || exit 0
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kexec --exec
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