Add fake e820 memory map entries to zeropage

utility/vbutil_kernel.c

 /* 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.
  *
  * Verified boot kernel utility
  */
 
 #include <errno.h>
 #include <getopt.h>
 #include <inttypes.h>  /* For PRIu64 */
@@ skipping 317 matching lines @@
    * tweak a few fields. */
   Debug("params goes at blob+=0x%" PRIx64 "\n", now);
   params = (struct linux_kernel_params *)(blob + now);
   Memcpy(&(params->setup_sects), &(lh->setup_sects),
          sizeof(*lh) - offsetof(struct linux_kernel_header, setup_sects));
   params->boot_flag = 0;
   params->ramdisk_image = 0;             /* we don't support initrd */
   params->ramdisk_size = 0;
   params->type_of_loader = 0xff;
   params->cmd_line_ptr = cmdline_addr;
+  /* A fake e820 memory map with 2 entries */
+  params->n_e820_entry = 2;
+  params->e820_entries[0].start_addr = 0x00000000;
+  params->e820_entries[0].segment_size = 0x00001000;
+  params->e820_entries[0].segment_type = E820_TYPE_RAM;
+  params->e820_entries[1].start_addr = 0xfffff000;
+  params->e820_entries[1].segment_size = 0x00001000;
+  params->e820_entries[1].segment_type = E820_TYPE_RESERVED;
   now += CROS_PARAMS_SIZE;
 
   /* Finally, append the bootloader. Remember where it will load in
    * memory, too. */
   Debug("bootloader goes at blob+=0x%" PRIx64 "\n", now);
   bp->bootloader_address = CROS_32BIT_ENTRY_ADDR + now;
   bp->bootloader_size = roundup(bootloader_size, CROS_ALIGN);
   Debug(" bootloader_address=0x%" PRIx64 "\n", bp->bootloader_address);
   Debug(" bootloader_size=0x%" PRIx64 "\n", bp->bootloader_size);
   if (bootloader_size)
@@ skipping 495 matching lines @@
 
     case OPT_MODE_VERIFY:
       return Verify(filename, signpubkey, verbose);
 
     default:
       fprintf(stderr,
               "You must specify a mode: --pack, --repack or --verify\n");
       return PrintHelp(progname);
   }
 }