Add dev tools

tools/README.md

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+# Dev Tools
+
+This directory contains some tools we use during development. They're not
+normally used with the module in any way. They're messy, buggy, quick and
+dirty but often helpful ;)

tools/inject_rp_ko.sh

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+#!/usr/bin/env bash
+# Injects RedPill LKM file into a ramdisk inside of an existing image (so you can test new LKM without constant full image
+# rebuild & transfer)
+#
+# Internally we use it something like this with Proxmox pointing to /dev/loop0 as the USB source:
+#   rm redpill.ko ; wget https://buildsrv/redpill.ko ; \
+#   IRP_LEAVE_ATTACHED=1 ./inject_rp_ko.sh rp-3615-v6.img redpill.ko ; losetup ; \
+#   qm stop 101 ; sleep 1 ; qm start 101 ; qm terminal 101 -iface serial1
+
+self=${0##*/}
+img="$(realpath $1 2> /dev/null)"
+lkm="$(realpath $2 2> /dev/null)"
+if	[ $# -ne 2 -o ! -f "$img" -o ! -f "$lkm" ]
+then
+	echo "Usage: $self <rp-load-img> <redpill.ko>"
+	exit 2
+fi
+
+echo "Detaching $img from all loopdevs"
+losetup -j "$img" | grep -E -o '^/dev/loop[0-9]+' | \
+while read -r loopdev; do
+  losetup -d "$loopdev"
+  echo "Detached $loopdev"
+done
+
+losetup -j "$img" | grep -E -q '^/dev/loop[0-9]+'
+if [ $? -eq 0 ]; then
+  echo "$img is still attached to some loop devs!"
+  exit 1
+fi
+
+set -euo pipefail
+LODEV="$(losetup --show -f -P "$img")"
+
+UNIQ_BASE="$PWD/__inject_rp_$(date '+%s')"
+echo "Making directories in $UNIQ_BASE"
+TMP_MNT_DIR="$UNIQ_BASE/img-mnt"
+TMP_RDU_DIR="$UNIQ_BASE/rd-unpacked"
+mkdir -p "$TMP_MNT_DIR"
+mkdir -p "$TMP_RDU_DIR"
+
+echo "Mounting in $TMP_MNT_DIR"
+mount "${LODEV}p1" "$TMP_MNT_DIR"
+
+echo "Unpacking $TMP_MNT_DIR/rd.gz"
+cd "$TMP_RDU_DIR"
+if file "$TMP_MNT_DIR/rd.gz" | grep -q 'cpio archive'; then # special case: uncompressed rd
+  IRP_FLAT_RD=1
+  cat "$TMP_MNT_DIR/rd.gz" | cpio -idmv
+else
+  xz -dc < "$TMP_MNT_DIR/rd.gz" | cpio -idmv
+fi
+
+echo "Copying $lkm"
+cp "$lkm" "$TMP_RDU_DIR/usr/lib/modules/rp.ko"
+
+echo "Repacking $TMP_MNT_DIR/rd.gz"
+if [[ ! -z "${IRP_FLAT_RD}" ]]; then # special case: uncompressed rd
+  find . 2>/dev/null | cpio -o -H newc -R root:root > "$TMP_MNT_DIR/rd.gz"
+else
+  find . 2>/dev/null | cpio -o -H newc -R root:root | xz -9 --format=lzma > "$TMP_MNT_DIR/rd.gz"
+fi
+
+echo "Unmounting & detaching (if requested)"
+sync
+umount "$TMP_MNT_DIR"
+if [[ -z "${IRP_LEAVE_ATTACHED}" ]]; then
+  losetup -d "$LODEV"
+fi
+
+echo "Cleaning up $UNIQ_BASE"
+rm -rf "$UNIQ_BASE"

tools/make_all.sh

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+#!/usr/bin/env bash
+# Makes all permutations of the LKM and copies them to RedPill Load directory so that we can easily rebuild all images
+# Yes, it has all the paths hardcoded - change it to fit your environment.
+# When you are executing this script do it from the root of the LKM dir like ./tools/make_all.sh
+
+LINUX_SRC_ROOT="$PWD/.."
+RP_LOAD_ROOT="$HOME/build/redpill-load"
+
+set -euo pipefail
+
+# Build for v6 for 3615xs
+make LINUX_SRC="$LINUX_SRC_ROOT/linux-3.10.x-bromolow-25426" clean
+make LINUX_SRC="$LINUX_SRC_ROOT/linux-3.10.x-bromolow-25426"
+cp redpill.ko "$RP_LOAD_ROOT/ext/rp-lkm/redpill-linux-v3.10.105.ko"
+
+# Build for v7 for 3615xs
+make LINUX_SRC="$LINUX_SRC_ROOT/bromolow-DSM-7.0-toolkit/build" clean
+make LINUX_SRC="$LINUX_SRC_ROOT/bromolow-DSM-7.0-toolkit/build"
+cp redpill.ko "$RP_LOAD_ROOT/ext/rp-lkm/redpill-linux-v3.10.108.ko"
+
+# Build for v6 for 918+
+make LINUX_SRC="$LINUX_SRC_ROOT/linux-4.4.x-apollolake-25426" clean
+make LINUX_SRC="$LINUX_SRC_ROOT/linux-4.4.x-apollolake-25426"
+cp redpill.ko "$RP_LOAD_ROOT/ext/rp-lkm/redpill-linux-v4.4.59+.ko"
+
+# Build for v7 for 918+
+make LINUX_SRC="$LINUX_SRC_ROOT/apollolake-DS-7.0-toolkit/build" clean
+make LINUX_SRC="$LINUX_SRC_ROOT/apollolake-DS-7.0-toolkit/build"
+cp redpill.ko "$RP_LOAD_ROOT/ext/rp-lkm/redpill-linux-v4.4.180+.ko"