#include <stdio.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>

int main() {

CFMutableDictionaryRef d = IOOpenFirmwarePathMatching(kIOMasterPortDefault, 0, "/arm-io/vrom");
if (d)
{
  io_service_t svc = IOServiceGetMatchingService(kIOMasterPortDefault, d);
  io_service_t conn;
  kern_return_t err = IOServiceOpen(svc, mach_task_self(), 0, conn);
  if (err!=kIOReturnSuccess)
  {
    printf("IOServiceOpen: %08X\n", err);
  }
  else
  {
    vm_address_t addr;
    vm_size_t size;
    err = IOConnectMapMemory(svc, 0, mach_task_self(), &addr, &size, kIOMapAnywhere);
    if (err!=kIOReturnSuccess)
    {
      printf("IOConnectMapMemory: %08X\n", err); 
    }
    else
    {
      printf("Mapped %d bytes at %08X\n", size, addr);
    }
  }
}

return 0;

}