Much rearranging of cgptlib. Passes all its (new) unit tests.

Also includes part of LoadKernel(), which I'll split into a separate
CL.  With some hacks, gets into VerifyKernel() before dying because
I'm not passing in the right key blob.

cgptlib is now pretty stable, and worth looking at.  LoadKernel() less so.

Thanks,
   Randall

Review URL: http://codereview.chromium.org/2438005

1 files changed, 125 insertions, 0 deletions

diff --git a/utility/load_kernel_test.c b/utility/load_kernel_test.c
new file mode 100644
index 00000000..ad398357
--- /dev/null
+++ b/utility/load_kernel_test.c
@@ -0,0 +1,125 @@
+/* Copyright (c) 2010 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.
+ */
+
+/* Routines for verifying a file's signature. Useful in testing the core
+ * RSA verification implementation.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "load_kernel_fw.h"
+#include "boot_device.h"
+#include "rollback_index.h"
+#include "utility.h"
+
+/* ANSI Color coding sequences. */
+#define COL_GREEN "\e[1;32m"
+#define COL_RED "\e[0;31m"
+#define COL_STOP "\e[m"
+
+
+#define LBA_BYTES 512
+#define KERNEL_BUFFER_SIZE 0x600000
+
+/* Global variables for stub functions */
+static LoadKernelParams lkp;
+static FILE *image_file = NULL;
+
+
+/* Boot device stub implementations to read from the image file */
+int BootDeviceReadLBA(uint64_t lba_start, uint64_t lba_count, void *buffer) {
+  printf("Read(%ld, %ld)\n", lba_start, lba_count);
+
+  if (lba_start > lkp.ending_lba ||
+      lba_start + lba_count - 1 > lkp.ending_lba) {
+    fprintf(stderr, "Read overrun: %ld + %ld > %ld\n",
+            lba_start, lba_count, lkp.ending_lba);
+    return 1;
+  }
+
+  fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET);
+  if (1 != fread(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) {
+    fprintf(stderr, "Read error.");
+    return 1;
+  }
+  return 0;
+}
+
+
+int BootDeviceWriteLBA(uint64_t lba_start, uint64_t lba_count,
+                       const void *buffer) {
+  printf("Write(%ld, %ld)\n", lba_start, lba_count);
+
+  if (lba_start > lkp.ending_lba ||
+      lba_start + lba_count - 1 > lkp.ending_lba) {
+    fprintf(stderr, "Read overrun: %ld + %ld > %ld\n",
+            lba_start, lba_count, lkp.ending_lba);
+    return 1;
+  }
+
+  /* TODO: enable writes, once we're sure it won't trash our example file */
+  return 0;
+
+  fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET);
+  if (1 != fwrite(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) {
+    fprintf(stderr, "Read error.");
+    return 1;
+  }
+  return 0;
+}
+
+
+/* Main routine */
+int main(int argc, char* argv[]) {
+
+  const char *image_name;
+  int rv;
+
+  Memset(&lkp, 0, sizeof(LoadKernelParams));
+  lkp.bytes_per_lba = LBA_BYTES;
+
+  /* Read command line parameters */
+  if (2 > argc) {
+    fprintf(stderr, "usage: %s <drive_image>\n", argv[0]);
+    return 1;
+  }
+  image_name = argv[1];
+  printf("Reading from image: %s\n", image_name);
+
+  /* TODO: Read header signing key blob */
+  lkp.header_sign_key_blob = NULL;
+
+  /* Get image size */
+  image_file = fopen(image_name, "rb");
+  if (!image_file) {
+    fprintf(stderr, "Unable to open image file %s\n", image_name);
+    return 1;
+  }
+  fseek(image_file, 0, SEEK_END);
+  lkp.ending_lba = (ftell(image_file) / LBA_BYTES) - 1;
+  rewind(image_file);
+  printf("Ending LBA: %ld\n", lkp.ending_lba);
+
+  /* Allocate a buffer for the kernel */
+  lkp.kernel_buffer = Malloc(KERNEL_BUFFER_SIZE);
+  if(!lkp.kernel_buffer) {
+    fprintf(stderr, "Unable to allocate kernel buffer.\n");
+    return 1;
+  }
+
+  /* TODO: Option for boot mode */
+  lkp.boot_mode = BOOT_MODE_NORMAL;
+
+  /* Call LoadKernel() */
+  rv = LoadKernel(&lkp);
+  printf("LoadKernel() returned %d\n", rv);
+
+  fclose(image_file);
+  Free(lkp.kernel_buffer);
+  return 0;
+}