post-build.sh

#!/bin/sh

set -e

# Create the Grub environment blocks
grub-editenv $BINARIES_DIR/grubenv_a create
grub-editenv $BINARIES_DIR/grubenv_a set boot=0
grub-editenv $BINARIES_DIR/grubenv_a set validated=0
grub-editenv $BINARIES_DIR/grubenv_a set booted_once=0

grub-editenv $BINARIES_DIR/grubenv_b create
grub-editenv $BINARIES_DIR/grubenv_b set boot=1
grub-editenv $BINARIES_DIR/grubenv_b set validated=0
grub-editenv $BINARIES_DIR/grubenv_b set booted_once=0

cp $BINARIES_DIR/grubenv_a $BINARIES_DIR/grubenv_a_valid
grub-editenv $BINARIES_DIR/grubenv_a_valid set booted_once=1
grub-editenv $BINARIES_DIR/grubenv_a_valid set validated=1

cp $BINARIES_DIR/grubenv_b $BINARIES_DIR/grubenv_b_valid
grub-editenv $BINARIES_DIR/grubenv_b_valid set booted_once=1
grub-editenv $BINARIES_DIR/grubenv_b_valid set validated=1

# Copy MBR boot code boot.img
cp $HOST_DIR/usr/lib/grub/i386-pc/boot.img $BINARIES_DIR

# Copy everything that's needed to build firmware images over to the
# output directory so that it can be bundled with the system image.
cp $NERVES_DEFCONFIG_DIR/grub.cfg $BINARIES_DIR

# Remove the Buildroot-generated grub.cfg so avoid confusion.
# We put our grub in the FAT filesystem at the beginning of the
# disk so that it exists across firmware updates.
rm -fr $TARGET_DIR/boot/grub/*

# Create the revert script for manually switching back to the previously
# active firmware.
mkdir -p $TARGET_DIR/usr/share/fwup
NERVES_SYSTEM=$BASE_DIR $HOST_DIR/usr/bin/fwup -c -f $NERVES_DEFCONFIG_DIR/fwup-revert.conf -o $TARGET_DIR/usr/share/fwup/revert.fw