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28b881840d
AWS Graviton [1234] systems have a bug in their ACPI where they mark
the PL061's GPIO pins as needing to be configured in PullUp mode (in
fact the PL061 has no pullup/pulldown resistors); this flag needs to
be removed in order for _AEI objects to be handled on these systems.
Reviewed by: Ali Saidi
Approved by: re (kib)
MFC after: 1 week
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D47239
(cherry picked from commit 2f3f867ac6dd7ff3769366b828b79c44b38828e1)
(cherry picked from commit 5fa51c3653)
140 lines
5.4 KiB
Bash
140 lines
5.4 KiB
Bash
#!/bin/sh
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# Package which should be installed onto all EC2 AMIs:
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# * ebsnvme-id, which is very minimal and provides important EBS-specific
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# functionality,
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export VM_EXTRA_PACKAGES="${VM_EXTRA_PACKAGES} ebsnvme-id"
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# Services which should be enabled by default in rc.conf(5).
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export VM_RC_LIST="dev_aws_disk ntpd"
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# Build with a 7.9 GB partition; the growfs rc.d script will expand
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# the partition to fill the root disk after the EC2 instance is launched.
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# Note that if this is set to <N>G, we will end up with an <N+1> GB disk
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# image since VMSIZE is the size of the filesystem partition, not the disk
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# which it resides within.
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export VMSIZE=8000m
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# No swap space; it doesn't make sense to provision any as part of the disk
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# image when we could be launching onto a system with anywhere between 0.5
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# and 4096 GB of RAM.
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export NOSWAP=YES
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ec2_common() {
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# Delete the pkg package and the repo database; they will likely be
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# long out of date before the EC2 instance is launched.
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mount -t devfs devfs ${DESTDIR}/dev
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chroot ${DESTDIR} ${EMULATOR} env ASSUME_ALWAYS_YES=yes \
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/usr/sbin/pkg delete -f -y pkg
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umount ${DESTDIR}/dev
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rm ${DESTDIR}/var/db/pkg/repo-*.sqlite
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# Turn off IPv6 Duplicate Address Detection; the EC2 networking
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# configuration makes it unnecessary.
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echo 'net.inet6.ip6.dad_count=0' >> ${DESTDIR}/etc/sysctl.conf
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# Booting quickly is more important than giving users a chance to
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# access the boot loader via the serial port.
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echo 'autoboot_delay="-1"' >> ${DESTDIR}/boot/loader.conf
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echo 'beastie_disable="YES"' >> ${DESTDIR}/boot/loader.conf
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# The EFI RNG on Graviton 2 is particularly slow if we ask for the
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# default 2048 bytes of entropy; ask for 64 bytes instead.
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echo 'entropy_efi_seed_size="64"' >> ${DESTDIR}/boot/loader.conf
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# Tell gptboot not to wait 3 seconds for a keypress which will
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# never arrive.
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printf -- "-n\n" > ${DESTDIR}/boot.config
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# The emulated keyboard attached to EC2 instances is inaccessible to
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# users, and there is no mouse attached at all; disable to keyboard
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# and the keyboard controller (to which the mouse would attach, if
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# one existed) in order to save time in device probing.
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echo 'hint.atkbd.0.disabled=1' >> ${DESTDIR}/boot/loader.conf
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echo 'hint.atkbdc.0.disabled=1' >> ${DESTDIR}/boot/loader.conf
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# EC2 has two consoles: An emulated serial port ("system log"),
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# which has been present since 2006; and a VGA console ("instance
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# screenshot") which was introduced in 2016.
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echo 'boot_multicons="YES"' >> ${DESTDIR}/boot/loader.conf
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# Some older EC2 hardware used a version of Xen with a bug in its
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# emulated serial port. It is not clear if EC2 still has any such
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# nodes, but apply the workaround just in case.
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echo 'hw.broken_txfifo="1"' >> ${DESTDIR}/boot/loader.conf
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# Graviton 1 through Graviton 4 have a bug in their ACPI where they
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# mark the PL061's pins as needing to be configured in PullUp mode
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# (in fact the PL061 has no pullup/pulldown resistors).
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echo 'debug.acpi.quirks="8"' >> ${DESTDIR}/boot/loader.conf
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# Load the kernel module for the Amazon "Elastic Network Adapter"
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echo 'if_ena_load="YES"' >> ${DESTDIR}/boot/loader.conf
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# Use the "nda" driver for accessing NVMe disks rather than the
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# historical "nvd" driver.
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echo 'hw.nvme.use_nvd="0"' >> ${DESTDIR}/boot/loader.conf
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# Disable KbdInteractiveAuthentication according to EC2 requirements.
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sed -i '' -e \
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's/^#KbdInteractiveAuthentication yes/KbdInteractiveAuthentication no/' \
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${DESTDIR}/etc/ssh/sshd_config
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# Use FreeBSD Update mirrors hosted in AWS
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sed -i '' -e 's/update.FreeBSD.org/aws.update.FreeBSD.org/' \
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${DESTDIR}/etc/freebsd-update.conf
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# Use the NTP service provided by Amazon
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sed -i '' -e 's/^pool/#pool/' \
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-e '1,/^#server/s/^#server.*/server 169.254.169.123 iburst/' \
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${DESTDIR}/etc/ntp.conf
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# Provide a map for accessing Elastic File System mounts
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cat > ${DESTDIR}/etc/autofs/special_efs <<'EOF'
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#!/bin/sh
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if [ $# -eq 0 ]; then
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# No way to know which EFS filesystems exist and are
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# accessible to this EC2 instance.
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exit 0
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fi
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# Provide instructions on how to mount the requested filesystem.
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FS=$1
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REGION=`fetch -qo- http://169.254.169.254/latest/meta-data/placement/availability-zone | sed -e 's/[a-z]$//'`
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echo "-nfsv4,minorversion=1,oneopenown ${FS}.efs.${REGION}.amazonaws.com:/"
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EOF
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chmod 755 ${DESTDIR}/etc/autofs/special_efs
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# The first time the AMI boots, run "first boot" scripts.
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touch ${DESTDIR}/firstboot
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return 0
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}
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ec2_base_networking () {
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# EC2 instances use DHCP to get their network configuration. IPv6
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# requires accept_rtadv.
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echo 'ifconfig_DEFAULT="SYNCDHCP accept_rtadv"' >> ${DESTDIR}/etc/rc.conf
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# The EC2 DHCP server can be trusted to know whether an IP address is
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# assigned to us; we don't need to ARP to check if anyone else is using
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# the address before we start using it.
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echo 'dhclient_arpwait="NO"' >> ${DESTDIR}/etc/rc.conf
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# Enable IPv6 on all interfaces, and spawn DHCPv6 via rtsold
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echo 'ipv6_activate_all_interfaces="YES"' >> ${DESTDIR}/etc/rc.conf
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echo 'rtsold_enable="YES"' >> ${DESTDIR}/etc/rc.conf
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echo 'rtsold_flags="-M /usr/local/libexec/rtsold-M -a"' >> ${DESTDIR}/etc/rc.conf
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# Provide a script which rtsold can use to launch DHCPv6
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mkdir -p ${DESTDIR}/usr/local/libexec
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cat > ${DESTDIR}/usr/local/libexec/rtsold-M <<'EOF'
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#!/bin/sh
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/usr/local/sbin/dhclient -6 -nw -N -cf /dev/null $1
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EOF
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chmod 755 ${DESTDIR}/usr/local/libexec/rtsold-M
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return 0
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}
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