install-update: Use Gentoo shell functions

These were adding over 60 MB to the rootfs image, and they'll never be
used.

Makefile

@@ -75,6 +75,7 @@ images/firmware.img: images/sdcard.img
 output/update.tar.zstd: \
 		images/rootfs.squashfs \
 		images/firmware.img \
+		install-update.sh \
 		.host-tools \
 		.prepared
 	./build-update.sh

build-kernel.sh

@@ -15,6 +15,7 @@ cd linux
     ../linux.config
 make -C /usr/src/linux O=${PWD} olddefconfig
 make -j$(nproc)
+touch arch/arm64/boot/Image.gz
 kver=$(make -s kernelversion)
 make modules_install INSTALL_MOD_PATH=/mnt/gentoo/usr
 cd -

build-rootfs.sh

@@ -61,6 +61,10 @@ tar -c -C overlay . \
 
 cp -uv /usr/${target}/usr/bin/grub-editenv /mnt/gentoo/usr/bin/
 
+find /mnt/gentoo/usr/${target}/usr/lib/udev/rules.d \
+    -name '*.rules' \
+    -exec mv -t /mnt/gentoo/usr/lib/udev/rules.d/ {} +
+
 if [ -f /mnt/gentoo/etc/udev/hwdb.bin ]; then
     mv /mnt/gentoo/etc/udev/hwdb.bin /mnt/gentoo/usr/lib/udev/
 fi

busybox.symlinks

@@ -3,6 +3,7 @@ cat
 cp
 dd
 df
+du
 echo
 env
 false

install-update.sh

@@ -1,6 +1,8 @@
 #!/bin/sh
 # vim: set sw=4 ts=4 sts=4 et :
 
+. /lib/gentoo/functions.sh
+
 die() {
     rc=$?
     if [ $rc -eq 0 ]; then
@@ -10,23 +12,10 @@ die() {
     exit $rc
 }
 
-error() {
-    printf 'ERROR: '
-    info "$@"
-}
-
 get_partuuid() {
     blkid -o value -s PARTUUID "$1"
 }
 
-info() {
-    if [ $# -eq 1 ]; then
-        echo "$1" >&2
-    elif [ $# -gt 1 ]; then
-        printf "$@" >&2
-    fi
-}
-
 set_default_boot() {
     _rc=0
     mkdir -p newroot || return
@@ -38,53 +27,55 @@ set_default_boot() {
     _kver=${_kernel#vmlinuz-}
     _partuuid=$(get_partuuid "$1")
     _id=id-${_partuuid}-${_kver}
-    printf 'Setting default boot entry to %s\n' "${_id}"
-    grub-editenv /boot/efi/EFI/gentoo/grubenv set "default=${_id}" || rc=$?
+    ebegin 'Setting default boot entry'
+    veindent
+    veinfo "Menu entry ID: ${_id}"
+    veoutdent
+    grub-editenv /boot/efi/EFI/gentoo/grubenv set "default=${_id}" || _rc=$?
+    eend $_rc
     umount newroot
-    return $rc
-}
-
-warn() {
-    printf 'WARNING: '
-    info "$@"
+    return $_rc
 }
 
 write_firmware() {
     _rc=0
     _esp=$(findfs PARTLABEL='EFI System Partition')
     if [ -z "${_esp}" ]; then
-        error 'Could not identify EFI System Partition'
+        eerror 'Could not identify EFI System Partition'
         return 1
     fi
     if ! mountpoint -q /boot/efi; then
         mount -o ro "${_esp}" /boot/efi \
-            || warn 'Failed to mount EFI System Partition'
+            || ewarn 'Failed to mount EFI System Partition'
     fi
     if [ -f /boot/efi/EFI/gentoo/grubenv ]; then
-        info 'Saving current GRUB environment ...'
-        cp /boot/efi/EFI/gentoo/grubenv . \
-            || warn 'Failed to save GRUB environment'
+        ebegin 'Saving current GRUB environment'
+        cp /boot/efi/EFI/gentoo/grubenv .
+        ewend $? 'Failed to save GRUB environment'
     fi
     if mountpoint -q /boot/efi; then
         umount /boot/efi || return
     fi
-    info 'Writing firmware image to EFI System Partition (%s) ...\n' "${_esp}"
+    ebegin "Writing firmware image to EFI System Partition (${_esp})"
     dd if=firmware.img of="${_esp}" bs=1M || _rc=$?
     if [ $_rc -eq 0 ]; then
         mount -orw "${_esp}" /boot/efi || rc=$?
     fi
     if [ $_rc -eq 0 ]; then
         if [ -f grubenv ]; then
-            printf 'Restoring GRUB environment ...\n'
+            ebegin 'Restoring GRUB environment'
             cp grubenv /boot/efi/EFI/gentoo/grubenv || _rc=$?
+            eend $_rc
         fi
     fi
     return $_rc
 }
 
 write_rootfs() {
-    printf 'Writing rootfs image to %s ...\n' "$1"
-    dd if=rootfs.squashfs of="$1" bs=1M
+    _rc=0
+    ebegin "Writing rootfs image to $1"
+    dd if=rootfs.squashfs of="$1" bs=1M || _rc=$?
+    eend $_rc
 }
 
 rc=0
@@ -94,10 +85,10 @@ write_rootfs "${newroot}" || die 'Failed to write new rootfs image to disk'
 write_firmware || die 'Failed to write new firmware image to disk'
 if ! set_default_boot "${newroot}"; then
     rc=$?
-    error 'Failed to set default boot option'
+    eerror 'Failed to set default boot option'
 fi
 
 if [ $rc -eq 0 ]; then
-    info 'Successfully installed update'
+    einfo 'Successfully installed update'
 fi
 exit $rc

linux.config

@@ -44,3 +44,6 @@ CONFIG_BT=m
 CONFIG_IPV6=y
 CONFIG_IPV6_SIT=m
 CONFIG_IPV6_SIT_6RD=m
+
+# CONFIG_MEDIA_CEC_SUPPORT is not set
+# CONFIG_MEDIA_SUPPORT is not set

squashfs.exclude

@@ -9,13 +9,24 @@ etc/csh.env
 etc/init.d
 etc/portage
 etc/runlevels
+usr/aarch64-unknown-linux-gnu
+usr/include
 usr/lib*/*.a
 usr/lib*/cmake
 usr/lib*/pkgconfig
+usr/lib/kernel
 usr/lib/rpm
+usr/local
+usr/share/aclocal
+usr/share/baselayout
+usr/share/bash-completion
 usr/share/doc
+usr/share/factory
 usr/share/info
 usr/share/man
+usr/share/pkgconfig
+usr/share/polkit-1
+usr/share/zsh
 var/cache/edb
 var/db/Makefile
 var/db/pkg