vboot: Add system-level test for LoadKernel()

This creates a disk image and verifies a kernel can be loaded from it.
It is roughly analogous to vb2_firmware_tests.sh, but at the kernel
step instead of the firmware step.

This will get more interesting in the near future, with the upcoming
addition of a streaming API to read the kernel.

BUG=chromium:408265
BRANCH=none
TEST=make runtests

Change-Id: Icc9e6d0e318c4bd38fc9ab1ad704da99232822e1
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/214508
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/tests/load_kernel_tests.sh b/tests/load_kernel_tests.sh
new file mode 100755
index 00000000..74e91e40
--- /dev/null
+++ b/tests/load_kernel_tests.sh
@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# End-to-end test for vboot2 kernel verification
+
+# Load common constants and variables.
+. "$(dirname "$0")/common.sh"
+
+set -e
+
+echo 'Creating test kernel'
+
+# Run tests in a dedicated directory for easy cleanup or debugging.
+DIR="${TEST_DIR}/load_kernel_test_dir"
+[ -d "$DIR" ] || mkdir -p "$DIR"
+echo "Testing kernel verification in $DIR"
+cd "$DIR"
+
+# Dummy kernel data
+echo "hi there" > "dummy_config.txt"
+dd if=/dev/urandom bs=16384 count=1 of="dummy_bootloader.bin"
+dd if=/dev/urandom bs=32768 count=1 of="dummy_kernel.bin"
+
+# Pack kernel data key using original vboot utilities.
+${BIN_DIR}/vbutil_key --pack datakey.test \
+    --key ${TESTKEY_DIR}/key_rsa2048.keyb --algorithm 4
+
+# Keyblock with kernel data key is signed by kernel subkey
+# Flags=5 means dev=0 rec=0
+${BIN_DIR}/vbutil_keyblock --pack keyblock.test \
+    --datapubkey datakey.test \
+    --flags 5 \
+    --signprivate ${SCRIPT_DIR}/devkeys/kernel_subkey.vbprivk
+
+# Kernel preamble is signed with the kernel data key
+${BIN_DIR}/futility vbutil_kernel \
+    --pack "kernel.test" \
+    --keyblock "keyblock.test" \
+    --signprivate ${TESTKEY_DIR}/key_rsa2048.sha256.vbprivk \
+    --version 1 \
+    --arch arm \
+    --vmlinuz "dummy_kernel.bin" \
+    --bootloader "dummy_bootloader.bin" \
+    --config "dummy_config.txt"
+
+echo 'Verifying test kernel using vbutil_kernel'
+
+# Verify the kernel
+${BIN_DIR}/futility vbutil_kernel \
+    --verify "kernel.test" \
+    --signpubkey ${SCRIPT_DIR}/devkeys/kernel_subkey.vbpubk
+
+happy 'Kernel verification succeeded'
+
+# Now create a dummy disk image
+echo 'Creating test disk image'
+dd if=/dev/zero of=disk.test bs=1024 count=1024
+cgpt create disk.test
+cgpt add -i 1 -S 1 -P 1 -b 64 -s 960 -t kernel -l kernelA disk.test
+cgpt show disk.test
+
+# And insert the kernel into it
+dd if=kernel.test of=disk.test bs=512 seek=64 conv=notrunc
+
+# And verify it using futility
+echo 'Verifying test disk image'
+${BIN_DIR}/futility verify_kernel disk.test \
+    ${SCRIPT_DIR}/devkeys/kernel_subkey.vbpubk
+
+happy 'Image verification succeeded'