CloverBootloader/CloverPackage/utils/bdmesg/bdmesg/main.c

/*
 * BooterLog Dump Tool, part of the Chameleon Boot Loader Project
 *
 * Copyright 2010 by Islam M. Ahmed Zaid. All rights reserved.
 *
 */

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>

#include <IOKit/IOKitLib.h>

int main(int argc, char *argv[])
{
  io_registry_entry_t root;
  CFTypeRef bootLog = NULL;

  root = IORegistryEntryFromPath(kIOMasterPortDefault, "IOService:/");

  if (root)
    bootLog = IORegistryEntryCreateCFProperty(root, CFSTR("boot-log"), kCFAllocatorDefault, 0);

  if (!bootLog)
  {
    // Check for Clover boot log
    root = IORegistryEntryFromPath(kIOMasterPortDefault, "IODeviceTree:/efi/platform");

    if (root)
      bootLog = IORegistryEntryCreateCFProperty(root, CFSTR("boot-log"), kCFAllocatorDefault, 0);
  }

  if (!bootLog)
  {
    printf("\"boot-log\" property not found.\n");
    return 0;
  }

  const UInt8 *msglog = CFDataGetBytePtr((CFDataRef)bootLog);

  if (msglog)
    printf("%s\n", msglog);
  
  return 0;
}