svn commit: r326873 - head/tools/boot

[Warner Losh]

Author: imp
Date: Fri Dec 15 06:34:11 2017
New Revision: 326873
URL: https://svnweb.freebsd.org/changeset/base/326873

Log:
  Script that knows how to put boot blocks onto a device.  Eventually,
  this will be installed into /usr/sbin, but for now it's just used for
  the boot loader regression script. It's still a bit green, and likely
  will get edge cases wrong still. It's also x86 centric at the moment,
  but will be enhanced shortly for u-boot, CHRP PowerPC and other
  methods.
  
  Sponsored by: Netflix

Added:
  head/tools/boot/install-boot.sh   (contents, props changed)

Added: head/tools/boot/install-boot.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/tools/boot/install-boot.sh	Fri Dec 15 06:34:11 2017	(r326873)
@@ -0,0 +1,128 @@
+#!/bin/sh
+
+# $FreeBSD$
+
+#
+# Installs/updates the necessary boot blocks for the desired boot environment
+#
+# Lightly tested.. Intended to be installed, but until it matures, it will just
+# be a boot tool for regression testing.
+
+# insert code here to guess what you have -- yikes!
+
+die() {
+    echo $*
+    exit 1
+}
+
+find-part() {
+    dev=$1
+    part=$2
+
+    gpart show $dev | tail +2 | awk '$4 == "'$part'" { print $3; }'
+}
+
+boot_nogeli_gpt_zfs_legacy() {
+    dev=$1
+    dst=$2
+
+    idx=$(find-part $dev "freebsd-boot")
+    if [ -z "$idx" ] ; then
+	die "No freebsd-boot partition found"
+    fi
+    gpart bootcode -b ${gpt0} -p ${gpt2} -i $idx $dev
+    exit 0
+}
+
+boot_nogeli_gpt_ufs_legacy() {
+    dev=$1
+    dst=$2
+
+    idx=$(find-part $dev "freebsd-boot")
+    if [ -z "$idx" ] ; then
+	die "No freebsd-boot partition found"
+    fi
+    gpart bootcode -b ${gpt0} -p ${gpt2} -i $idx $dev
+    exit 0
+}
+
+boot_nogeli_mbr_zfs_legacy() {
+    dev=$1
+    dst=$2
+
+    # search to find the BSD slice
+    s=$(findpart $dev "freebsd-zfs")
+    if [ -z "$s" ] ; then
+	die "No freebsd-zfs slice found"
+    fi
+    # search to find the freebsd-zfs partition within the slice
+    # Or just assume it is 'a' because it has to be since it fails otherwise
+    dd if=${dst}/boot/zfsboot of=/tmp/zfsboot1 count=1
+    gpart bootcode -b /tmp/zfsboo1 ${dev}s${s}	# Put boot1 into the start of part
+    sysctl kern.geom.debugflags=0x10
+    dd if=${dst}/boot/zfsboot iseek=1 seek=1024	# Put boot2 into ZFS boot slot
+    sysctl kern.geom.debugflags=0x0
+
+    exit 0
+}
+
+boot_nogeli_mbr_ufs_legacy() {
+    dev=$1
+    dst=$2
+
+    gpart bootcode -b ${mbr0} ${dev}
+    s=$(findpart $dev "freebsd-ufs")
+    if [ -z "$s" ] ; then
+	die "No freebsd-zfs slice found"
+    fi
+    gpart bootcode -p ${mbr2} ${dev}s${s}
+    exit 0
+}
+
+DESTDIR=/
+
+# Note: we really don't support geli boot in this script yet.
+geli=nogeli
+
+while getopts "b:d:f:g:o:s:" opt; do
+    case "$opt" in
+	b)
+	    bios=${OPTARG}
+	    ;;
+	d)
+	    DESTDIR=${OPTARG}
+	    ;;
+	f)
+	    fs=${OPTARG}
+	    ;;
+	g)
+	    case ${OPTARG} in
+		[Yy][Ee][Ss]|geli) geli=geli ;;
+		*) geli=nogeli ;;
+	    esac
+	    ;;
+	o)
+	    opts=${OPTARG}
+	    ;;
+	s)
+	    scheme=${OPTARG}
+	    ;;
+    esac
+done
+
+shift $((OPTIND-1))
+dev=$1
+
+# For gpt, we need to install pmbr as the primary boot loader
+# it knows about 
+gpt0=${DESTDIR}/boot/pmbr
+gpt2=${DESTDIR}/boot/gptboot
+gptzfs2=${DESTDIR}/boot/gptzfsboot
+
+# For MBR, we have lots of choices, but select boot0
+mbr0=${DESTDIR}/boot/boot0
+mbr2=${DESTDIR}/boot/boot
+
+# sanity check here
+
+eval boot_${geli}_${scheme}_${fs}_${bios} $dev $DESTDIR $opts || echo "Unsupported boot env: ${geli}-${scheme}-${fs}-${bios}"