#!/bin/sh
# R2/T4 RAM test image: exact B6P initramfs (8dcb61c8) + appended overlay with /init = B6P init + telnetd on 172.16.42.1:23.
# Kernel/DTB/cmdline = golden mm1 (same as B6P). For `fastboot boot` only - never flash.
set -e; cd "$(dirname "$0")"; B=../../b6p; O=out; GEN=../../linux/out/usr/gen_init_cpio; TS=1790726400
G=../../linux/artifacts/ramboot-mm1
echo "8dcb61c8d839e8709c17abb2736f69a0ca4d0a689d931e79ddacaaf59933f5b9  $B/out/initramfs-b6p.cpio.gz" | sha256sum -c
echo "18a25e399c96afaf22e8e84e0d7c8fef18518bb427c9a36440ad6435f71b9090  $B/out/aurora-mm1-b6p.img" | sha256sum -c
# prove the writer reproduces the B6P image bit-for-bit
python3 $B/mkbootimg.py $B/out/golden-unpack/kernel $B/out/initramfs-b6p.cpio.gz $G/cmdline.txt $O/b6p-rebuilt.img
cmp $O/b6p-rebuilt.img $B/out/aurora-mm1-b6p.img && echo "mkbootimg: B6P reproduced bit-for-bit"
printf 'file /init rootfs/init 0755 0 0\n' > $O/overlay-t4.list
$GEN -t $TS $O/overlay-t4.list > $O/overlay-t4.cpio
gzip -9 -n -c $O/overlay-t4.cpio > $O/overlay-t4.cpio.gz
cat $B/out/initramfs-b6p.cpio.gz $O/overlay-t4.cpio.gz > $O/initramfs-t4.cpio.gz
python3 $B/mkbootimg.py $B/out/golden-unpack/kernel $O/initramfs-t4.cpio.gz $G/cmdline.txt $O/aurora-mm1-t4telnet.img
sha256sum rootfs/init $O/overlay-t4.cpio.gz $O/initramfs-t4.cpio.gz $O/aurora-mm1-t4telnet.img > $O/SHA256SUMS
cat $O/SHA256SUMS; ls -l $O/aurora-mm1-t4telnet.img