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/* 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 <inttypes.h> /* For PRIu64 macro */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "load_kernel_fw.h"
#include "boot_device.h"
#include "host_common.h"
#include "rollback_index.h"
#include "utility.h"
#include "vboot_kernel.h"
#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(%" PRIu64 ", %" PRIu64 ")\n", lba_start, lba_count);
if (lba_start > lkp.ending_lba ||
lba_start + lba_count - 1 > lkp.ending_lba) {
fprintf(stderr, "Read overrun: %" PRIu64 " + %" PRIu64 " > %" PRIu64 "\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(%" PRIu64 ", %" PRIu64 ")\n", lba_start, lba_count);
if (lba_start > lkp.ending_lba ||
lba_start + lba_count - 1 > lkp.ending_lba) {
fprintf(stderr, "Read overrun: %" PRIu64 " + %" PRIu64 " > %" PRIu64 "\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;
const char* keyfile_name;
int rv;
Memset(&lkp, 0, sizeof(LoadKernelParams));
lkp.bytes_per_lba = LBA_BYTES;
/* Read command line parameters */
if (3 > argc) {
fprintf(stderr, "usage: %s <drive_image> <sign_key>\n", argv[0]);
return 1;
}
image_name = argv[1];
keyfile_name = argv[2];
/* Read header signing key blob */
{
uint64_t key_size;
lkp.header_sign_key_blob = ReadFile(keyfile_name, &key_size);
if (!lkp.header_sign_key_blob) {
fprintf(stderr, "Unable to read key file %s\n", keyfile_name);
return 1;
}
}
/* Get image size */
printf("Reading from image: %s\n", image_name);
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: %" PRIu64 "\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 - developer, recovery */
/* Need to skip the address check, since we're putting it somewhere on the
* heap instead of its actual target address in the firmware. */
lkp.boot_flags = BOOT_FLAG_SKIP_ADDR_CHECK | BOOT_FLAG_RECOVERY;
/* Call LoadKernel() */
rv = LoadKernel(&lkp);
printf("LoadKernel() returned %d\n", rv);
if (LOAD_KERNEL_SUCCESS == rv) {
printf("Partition number: %" PRIu64 "\n", lkp.partition_number);
printf("Bootloader address: %" PRIu64 "\n", lkp.bootloader_address);
printf("Bootloader size: %" PRIu64 "\n", lkp.bootloader_size);
}
fclose(image_file);
Free(lkp.kernel_buffer);
return rv != LOAD_KERNEL_SUCCESS;
}
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