wowzers

builder/builder.sh

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+#!/bin/bash
+
+VERSION=1
+
+echo "KVS Builder $VERSION"

builder/menu/factory_install.sh

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+#!/bin/bash
+# KVS: Kernel Version Switcher
+# Written by kxtzownsu / kxtz#8161
+# https://kxtz.dev
+# Licensed under GPLv3
+
+version=1
+GITHUB_URL="https://github.com/kxtzownsu/KVS"
+
+# give me thy kernver NOW
+case "$(crossystem tpm_kernver)" in
+  "0x00000000")
+    kernver="0"
+    ;;
+  "0x00010001")
+    kernver="1"
+    ;;
+  "0x00010002")
+    kernver="2"
+    ;;
+  "0x00010003")
+    kernver="3"
+    ;;
+  *)
+    panic "invalid-kernver"
+    ;;
+esac
+
+
+source functions.sh
+source tpmutil.sh
+
+# detect if booted from usb boot or from recovery boot
+if [ "$(crossystem mainfw_type)" == "recovery" ]; then
+  source tpmutil.sh
+  mkdir /mnt/state &2> /dev/zero
+  mount /dev/disk/by-label/KVS /mnt/state
+elif [ "$(crossystem mainfw_type)" == "developer" ]; then
+  # echo "Please run this shim using the Recovery Boot method. (ESC+REFRESH+PWR)"
+  echo ""
+  clear
+fi
+
+credits(){
+  echo "KVS: Kernel Version Switcher"
+  echo "V$version"
+  echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-"
+  echo "kxtzownsu - Writing KVS, Providing kernver 0 & kernver 1 files."
+  echo "??? - Providing kernver 2 files."
+  echo "TBD - Providing kernver 3 files."
+  echo "Google - Writing the `tpmc` command :3"
+}
+
+endkvs(){
+  # reboot now
+  stopwatch
+}
+
+
+main(){
+  echo "KVS: Kernel Version Switcher v$version"
+  echo "Current kernver: $kernver"
+  echo "=-=-=-=-=-=-=-=-=-=-"
+  echo "1) Set New kernver"
+  echo "2) Backup kernver (WIP, Kinda Broken)"
+  echo "3) Credits"
+  echo "4) Exit"
+  read -rep "> " sel
+  
+  selection $sel
+}
+
+
+panic mount-error

builder/menu/functions.sh

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+#!/bin/bash
+
+style_text() {
+  printf "\e[31m\033[1m\033[5m$1\e[0m\n"
+}
+
+panic(){
+  case "$1" in
+    "invalid-kernver")
+      style_text "KVS PANIC"
+      printf "\e[31mERR\e[0m"
+      printf ": Invalid Kernel Version. Please make a GitHub issue at \e[3;34m$GITHUB_URL\e[0m with a picture of this information.\n"
+      echo "-=-=-=-=-=-=-=-=-=-=-=-=-=-="
+      echo "tpm_kernver: $(crossystem tpm_kernver)"
+      echo "fwid: $(crossystem ro_fwid)"
+      echo "date: $(date)"
+      echo "model: $(cat /sys/class/dmi/id/product_name) $(cat /sys/class/dmi/id/product_version)"
+      echo "Please shutdown your device now using REFRESH+PWR"
+      sleep infinity
+      ;;
+    "mount-error")
+      style_text "KVS PANIC"
+      printf "\e[31mERR\e[0m"
+      printf ": Unable to mount stateful. Please make a GitHub issue at \e[3;34m$GITHUB_URL\e[0m with a picture of this information.\n"
+      echo "-=-=-=-=-=-=-=-=-=-=-=-=-=-="
+      echo "tpm_kernver: $(crossystem tpm_kernver)"
+      echo "fwid: $(crossystem ro_fwid)"
+      echo "state mounted: $([ -d /mnt/state/ ] && grep -qs '/mnt/state ' /proc/mounts && echo true || echo false)"
+      echo "date: $(date)"
+      echo "model: $(cat /sys/class/dmi/id/product_name) $(cat /sys/class/dmi/id/product_version)"
+      echo "Please shutdown your device now using REFRESH+PWR"
+      sleep infinity
+      
+  esac
+}
+
+stopwatch() {
+    display_timer() {
+        printf "[%02d:%02d:%02d]\n" $hh $mm $ss
+    }
+    hh=0 #hours
+    mm=0 #minutes
+    ss=0 #seconds
+    
+    while true; do
+        clear
+        echo "Initiated reboot, if this doesn't reboot please manually reboot with REFRESH+PWR"
+        echo "Time since reboot initiated:"
+        display_timer
+        ss=$((ss + 1))
+        # if seconds reach 60, increment the minutes
+        if [ $ss -eq 60 ]; then
+            ss=0
+            mm=$((mm + 1))
+        fi
+        # if minutes reach 60, increment the hours
+        if [ $mm -eq 60 ]; then
+            mm=0
+            hh=$((hh + 1))
+        fi
+        sleep 1
+    done
+}
+
+selection(){
+  case $1 in
+    "1")
+      echo "Please Enter Target kernver (0-3)"
+      read -r kernver
+      case $kernver in
+        "0")
+          echo "Setting kernver 0"
+          ;;
+        "1")
+          echo "Setting kernver 1"
+          ;;
+        "2")
+          echo "Setting kernver 2"
+          ;;
+        "3")
+          echo "Setting kernver 3"
+          ;;
+        *)
+          echo "Invalid kernver. Please check your input."
+          main
+          ;;
+      esac ;;
+    "2")
+      if [ $currentkernver == "0x00000000" ]; then
+        echo "Current kernver: 0"
+        echo "Outputting to stateful/kernver-out"
+        cp /mnt/state/versions/kernver0 /mnt/state/kernver-out
+      elif [ $currentkernver == "0x00010001" ]; then
+        echo "Current kernver: 1"
+        echo "Outputting to stateful/kernver-out"
+        cp /mnt/state/versions/kernver1 /mnt/state/kernver-out
+      elif [ $currentkernver == "0x00010002" ]; then
+        echo "Current kernver: 2"
+        echo "Outputting to stateful/kernver-out"
+        cp /mnt/state/versions/kernver2 /mnt/state/kernver-out
+      elif [ $currentkernver == "0x00010003" ]; then
+        echo "Current kernver: 3"
+        echo "Outputting to stateful/kernver-out"
+        cp /mnt/state/versions/kernver3 /mnt/state/kernver-out
+      fi
+      ;;
+    "3")
+      credits
+      ;;
+    "4")
+      endkvs
+      ;;
+  esac
+}

builder/menu/tpmutil.sh

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+#!/bin/bash
+
+write_tpm(){
+  local index=$1
+  local data=$2
+  
+  tpmc write "$index" "$data"
+}
+
+read_tpm(){
+  local index=$1
+  local bytes=$2
+  
+  tpmc read "$index" "$bytes"
+}

builder/menu/versions/kernver0

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+02  4c 57 52 47  0 0 0 0  0 0 0  e8

builder/menu/versions/kernver1

@@ -0,0 +1 @@
+02  4c 57 52 47  0 0 0 0  0 0 0  0

builder/menu/versions/kernver2

@@ -0,0 +1 @@
+02  4c 57 52 47  1 0 1 0  0 0 0  55

builder/menu/versions/kernver3

@@ -0,0 +1 @@
+02  4c 57 52 47  3 0 1 0  0 0 0  EC