#!/bin/sh
# board-info.sh 1.0.0 - AppGoBox - MIT License
# Read-only: prints board model, SoC compatible strings, OS, kernel, boot device,
# storage, memory and temperature. No network access, writes nothing, needs no root.
set -u

say() { printf '%-14s %s\n' "$1" "$2"; }
dt_read() { [ -r "$1" ] && tr '\000' ' ' < "$1" | sed 's/ *$//'; }

dt=/proc/device-tree
[ -d "$dt" ] || dt=/sys/firmware/devicetree/base

model=$(dt_read "$dt/model")
say "Model:" "${model:-unknown (no device tree; x86 PC or VM?)}"
compat=$(dt_read "$dt/compatible")
[ -n "$compat" ] && say "Compatible:" "$compat"

if [ -r /etc/os-release ]; then
  os=$(. /etc/os-release 2>/dev/null; printf '%s' "${PRETTY_NAME:-unknown}")
  say "OS:" "$os"
fi
say "Kernel:" "$(uname -srm)"

root=$(awk '$2 == "/" { print $1 }' /proc/mounts 2>/dev/null | tail -n 1)
say "Root on:" "${root:-unknown}"
for t in /sys/block/mmcblk*/device/type; do
  [ -r "$t" ] || continue
  dev=${t#/sys/block/}; dev=${dev%%/*}
  say "$dev:" "$(cat "$t") (SD = memory card, MMC = eMMC)"
done

if command -v lsblk >/dev/null 2>&1; then
  printf '\nStorage:\n'
  lsblk -d -o NAME,SIZE,TYPE,TRAN,MODEL 2>/dev/null
fi

mem=$(awk '/^MemTotal:/ { printf "%.0f MiB", $2 / 1024 }' /proc/meminfo 2>/dev/null)
printf '\n'; say "Memory:" "${mem:-unknown}"
for z in /sys/class/thermal/thermal_zone*/temp; do
  [ -r "$z" ] || continue
  name=$(cat "${z%/temp}/type" 2>/dev/null)
  say "Temp:" "$(awk '{ printf "%.1f C", $1 / 1000 }' "$z") ${name:+($name)}"
done