grub/util/mkimage.c

/* grub-mkimage.c - make a bootable image */
/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2010  Free Software Foundation, Inc.
 *
 *  GRUB is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  GRUB is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <grub/types.h>
#include <grub/elf.h>
#include <grub/aout.h>
#include <grub/i18n.h>
#include <grub/kernel.h>
#include <grub/disk.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/util/resolve.h>
#include <grub/misc.h>
#include <grub/offsets.h>
#include <grub/crypto.h>
#include <grub/dl.h>
#include <time.h>
#include <multiboot.h>

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <grub/efi/pe32.h>
#include <grub/uboot/image.h>
#include <grub/arm/reloc.h>
#include <grub/arm64/reloc.h>
#include <grub/ia64/reloc.h>
#include <grub/osdep/hostfile.h>
#include <grub/util/install.h>
#include <grub/util/mkimage.h>

#define ALIGN_ADDR(x) (ALIGN_UP((x), image_target->voidp_sizeof))

#ifdef USE_LIBLZMA
#include <lzma.h>
#endif

#pragma GCC diagnostic ignored "-Wcast-align"

#define TARGET_NO_FIELD 0xffffffff

/* use 2015-01-01T00:00:00+0000 as a stock timestamp */
#define STABLE_EMBEDDING_TIMESTAMP 1420070400

#define EFI32_HEADER_SIZE ALIGN_UP (GRUB_PE32_MSDOS_STUB_SIZE		\
				    + GRUB_PE32_SIGNATURE_SIZE		\
				    + sizeof (struct grub_pe32_coff_header) \
				    + sizeof (struct grub_pe32_optional_header) \
				    + 4 * sizeof (struct grub_pe32_section_table), \
				    GRUB_PE32_FILE_ALIGNMENT)

#define EFI64_HEADER_SIZE ALIGN_UP (GRUB_PE32_MSDOS_STUB_SIZE		\
				    + GRUB_PE32_SIGNATURE_SIZE		\
				    + sizeof (struct grub_pe32_coff_header) \
				    + sizeof (struct grub_pe64_optional_header) \
				    + 4 * sizeof (struct grub_pe32_section_table), \
				    GRUB_PE32_FILE_ALIGNMENT)

static const struct grub_install_image_target_desc image_targets[] =
  {
    {
      .dirname = "i386-coreboot",
      .names = { "i386-coreboot", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_COREBOOT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .reloc_table_offset = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_COREBOOT_LINK_ADDR,
      .elf_target = EM_386,
      .link_align = 4,
      .mod_gap = GRUB_KERNEL_I386_COREBOOT_MOD_GAP,
      .mod_align = GRUB_KERNEL_I386_COREBOOT_MOD_ALIGN
    },
    {
      .dirname = "i386-multiboot",
      .names = { "i386-multiboot", NULL},
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_COREBOOT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_COREBOOT_LINK_ADDR,
      .elf_target = EM_386,
      .link_align = 4,
      .mod_gap = GRUB_KERNEL_I386_COREBOOT_MOD_GAP,
      .mod_align = GRUB_KERNEL_I386_COREBOOT_MOD_ALIGN
    },
    {
      .dirname = "i386-pc",
      .names = { "i386-pc", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_I386_PC,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_I386_PC_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_I386_PC_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_PC_LINK_ADDR,
      .default_compression = GRUB_COMPRESSION_LZMA
    },
    {
      .dirname = "i386-xen_pvh",
      .names = { "i386-xen_pvh", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_XEN_PVH,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .elf_target = EM_386,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_XEN_PVH_LINK_ADDR,
      .mod_align = GRUB_KERNEL_I386_XEN_PVH_MOD_ALIGN,
      .link_align = 4
    },
    {
      .dirname = "i386-pc",
      .names = { "i386-pc-pxe", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_I386_PC_PXE,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_I386_PC_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_I386_PC_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_PC_LINK_ADDR,
      .default_compression = GRUB_COMPRESSION_LZMA
    },
    {
      .dirname = "i386-pc",
      .names = { "i386-pc-eltorito", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_I386_PC_ELTORITO,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_I386_PC_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_I386_PC_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_PC_LINK_ADDR,
      .default_compression = GRUB_COMPRESSION_LZMA
    },
    {
      .dirname = "i386-efi",
      .names = { "i386-efi", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI32_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_I386,
      .elf_target = EM_386,
    },
    {
      .dirname = "i386-ieee1275",
      .names = { "i386-ieee1275", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_I386_IEEE1275,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_IEEE1275_LINK_ADDR,
      .elf_target = EM_386,
      .mod_gap = GRUB_KERNEL_I386_IEEE1275_MOD_GAP,
      .mod_align = GRUB_KERNEL_I386_IEEE1275_MOD_ALIGN,
      .link_align = 4,
    },
    {
      .dirname = "i386-qemu",
      .names = { "i386-qemu", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_QEMU,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_I386_QEMU_LINK_ADDR
    },
    {
      .dirname = "x86_64-efi",
      .names = { "x86_64-efi", NULL },
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI64_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_X86_64,
      .elf_target = EM_X86_64,
    },
    {
      .dirname = "i386-xen",
      .names = { "i386-xen", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_XEN,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = 0,
      .elf_target = EM_386,
      .mod_gap = GRUB_KERNEL_I386_XEN_MOD_GAP,
      .mod_align = GRUB_KERNEL_I386_XEN_MOD_ALIGN,
      .link_align = 4
    },
    {
      .dirname = "x86_64-xen",
      .names = { "x86_64-xen", NULL },
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_XEN,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = 0,
      .elf_target = EM_X86_64,
      .mod_gap = GRUB_KERNEL_X86_64_XEN_MOD_GAP,
      .mod_align = GRUB_KERNEL_X86_64_XEN_MOD_ALIGN,
      .link_align = 8
    },
    {
      .dirname = "mipsel-loongson",
      .names = { "mipsel-yeeloong-flash", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_YEELOONG_FLASH,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_LOONGSON_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_LOONGSON_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_LOONGSON_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mipsel-loongson",
      .names = { "mipsel-fuloong2f-flash", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_FULOONG2F_FLASH,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_LOONGSON_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_LOONGSON_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_LOONGSON_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mipsel-loongson",
      .names = { "mipsel-loongson-elf", "mipsel-yeeloong-elf",
		 "mipsel-fuloong2f-elf", "mipsel-fuloong2e-elf",
		 "mipsel-fuloong-elf", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_LOONGSON_ELF,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_LOONGSON_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_LOONGSON_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_LOONGSON_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "powerpc-ieee1275",
      .names = { "powerpc-ieee1275", NULL },
      .voidp_sizeof = 4,
      .bigendian = 1,
      .id = IMAGE_PPC,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_POWERPC_IEEE1275_LINK_ADDR,
      .elf_target = EM_PPC,
      .mod_gap = GRUB_KERNEL_POWERPC_IEEE1275_MOD_GAP,
      .mod_align = GRUB_KERNEL_POWERPC_IEEE1275_MOD_ALIGN,
      .link_align = 4
    },
    {
      .dirname = "sparc64-ieee1275",
      .names = { "sparc64-ieee1275-raw", NULL },
      .voidp_sizeof = 8,
      .bigendian = 1,
      .id = IMAGE_SPARC64_RAW,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_SPARC64_IEEE1275_LINK_ADDR,
      .mod_align = GRUB_KERNEL_SPARC64_IEEE1275_MOD_ALIGN,
    },
    {
      .dirname = "sparc64-ieee1275",
      .names = { "sparc64-ieee1275-cdcore", NULL },
      .voidp_sizeof = 8,
      .bigendian = 1,
      .id = IMAGE_SPARC64_CDCORE,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_SPARC64_IEEE1275_LINK_ADDR,
      .mod_align = GRUB_KERNEL_SPARC64_IEEE1275_MOD_ALIGN,
    },
    {
      .dirname = "sparc64-ieee1275",
      .names = { "sparc64-ieee1275-aout", NULL },
      .voidp_sizeof = 8,
      .bigendian = 1,
      .id = IMAGE_SPARC64_AOUT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_SPARC64_IEEE1275_LINK_ADDR,
      .mod_align = GRUB_KERNEL_SPARC64_IEEE1275_MOD_ALIGN,
    },
    {
      .dirname = "ia64-efi",
      .names = {"ia64-efi", NULL},
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI64_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_IA64,
      .elf_target = EM_IA_64,
    },
    {
      .dirname = "mips-arc",
      .names = {"mips-arc", NULL},
      .voidp_sizeof = 4,
      .bigendian = 1,
      .id = IMAGE_MIPS_ARC,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_ARC_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_ARC_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_ARC_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mipsel-arc",
      .names = {"mipsel-arc", NULL},
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_MIPS_ARC,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_ARC_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPSEL_ARC_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_ARC_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mipsel-qemu_mips",
      .names = { "mipsel-qemu_mips-elf", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_LOONGSON_ELF,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mips-qemu_mips",
      .names = { "mips-qemu_mips-flash", NULL },
      .voidp_sizeof = 4,
      .bigendian = 1,
      .id = IMAGE_QEMU_MIPS_FLASH,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mipsel-qemu_mips",
      .names = { "mipsel-qemu_mips-flash", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_QEMU_MIPS_FLASH,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "mips-qemu_mips",
      .names = { "mips-qemu_mips-elf", NULL },
      .voidp_sizeof = 4,
      .bigendian = 1,
      .id = IMAGE_LOONGSON_ELF,
      .flags = PLATFORM_FLAGS_DECOMPRESSORS,
      .total_module_size = GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,
      .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,
      .decompressor_uncompressed_addr = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_ADDR,
      .section_align = 1,
      .vaddr_offset = 0,
      .link_addr = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ADDR,
      .elf_target = EM_MIPS,
      .link_align = GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN,
      .default_compression = GRUB_COMPRESSION_NONE
    },
    {
      .dirname = "arm-uboot",
      .names = { "arm-uboot", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_UBOOT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_ARM_UBOOT_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_KERNEL_ARM_UBOOT_MOD_ALIGN,
      .vaddr_offset = 0,
      .elf_target = EM_ARM,
      .mod_gap = GRUB_KERNEL_ARM_UBOOT_MOD_GAP,
      .mod_align = GRUB_KERNEL_ARM_UBOOT_MOD_ALIGN,
      .link_align = 4
    },
    /* For coreboot versions that don't support self-relocating images. */
    {
      .dirname = "arm-coreboot-vexpress",
      .names = { "arm-coreboot-vexpress", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_COREBOOT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_ARM_COREBOOT_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_KERNEL_ARM_COREBOOT_MOD_ALIGN,
      .vaddr_offset = 0,
      .elf_target = EM_ARM,
      .mod_gap = GRUB_KERNEL_ARM_COREBOOT_MOD_GAP,
      .mod_align = GRUB_KERNEL_ARM_COREBOOT_MOD_ALIGN,
      .link_align = 4,
      .link_addr = 0x62000000,
    },
    {
      .dirname = "arm-coreboot-veyron",
      .names = { "arm-coreboot-veyron", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_COREBOOT,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = GRUB_KERNEL_ARM_COREBOOT_TOTAL_MODULE_SIZE,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_KERNEL_ARM_COREBOOT_MOD_ALIGN,
      .vaddr_offset = 0,
      .elf_target = EM_ARM,
      .mod_gap = GRUB_KERNEL_ARM_COREBOOT_MOD_GAP,
      .mod_align = GRUB_KERNEL_ARM_COREBOOT_MOD_ALIGN,
      .link_align = 4,
      .link_addr = 0x43000000,
    },
    {
      .dirname = "arm-efi",
      .names = { "arm-efi", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI32_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_ARMTHUMB_MIXED,
      .elf_target = EM_ARM,
    },
    {
      .dirname = "arm64-efi",
      .names = { "arm64-efi", NULL },
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI64_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_ARM64,
      .elf_target = EM_AARCH64,
    },
    {
      .dirname = "loongarch64-efi",
      .names = { "loongarch64-efi", NULL },
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI64_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_LOONGARCH64,
      .elf_target = EM_LOONGARCH,
    },
    {
      .dirname = "riscv32-efi",
      .names = { "riscv32-efi", NULL },
      .voidp_sizeof = 4,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI32_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_RISCV32,
      .elf_target = EM_RISCV,
    },
    {
      .dirname = "riscv64-efi",
      .names = { "riscv64-efi", NULL },
      .voidp_sizeof = 8,
      .bigendian = 0,
      .id = IMAGE_EFI,
      .flags = PLATFORM_FLAGS_NONE,
      .total_module_size = TARGET_NO_FIELD,
      .decompressor_compressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_size = TARGET_NO_FIELD,
      .decompressor_uncompressed_addr = TARGET_NO_FIELD,
      .section_align = GRUB_PE32_SECTION_ALIGNMENT,
      .vaddr_offset = EFI64_HEADER_SIZE,
      .pe_target = GRUB_PE32_MACHINE_RISCV64,
      .elf_target = EM_RISCV,
    },
  };

#include <grub/lib/LzmaEnc.h>

static void *SzAlloc(void *p __attribute__ ((unused)), size_t size) { return xmalloc(size); }
static void SzFree(void *p __attribute__ ((unused)), void *address) { free(address); }
static ISzAlloc g_Alloc = { SzAlloc, SzFree };

static void
compress_kernel_lzma (char *kernel_img, size_t kernel_size,
		      char **core_img, size_t *core_size)
{
  CLzmaEncProps props;
  unsigned char out_props[5];
  size_t out_props_size = 5;

  LzmaEncProps_Init(&props);
  props.dictSize = 1 << 16;
  props.lc = 3;
  props.lp = 0;
  props.pb = 2;
  props.numThreads = 1;

  *core_img = xmalloc (kernel_size);

  *core_size = kernel_size;
  if (LzmaEncode ((unsigned char *) *core_img, core_size,
		  (unsigned char *) kernel_img,
		  kernel_size,
		  &props, out_props, &out_props_size,
		  0, NULL, &g_Alloc, &g_Alloc) != SZ_OK)
    grub_util_error ("%s", _("cannot compress the kernel image"));
}

#ifdef USE_LIBLZMA
static void
compress_kernel_xz (char *kernel_img, size_t kernel_size,
		    char **core_img, size_t *core_size)
{
  lzma_stream strm = LZMA_STREAM_INIT;
  lzma_ret xzret;
  lzma_options_lzma lzopts = {
    .dict_size = 1 << 16,
    .preset_dict = NULL,
    .preset_dict_size = 0,
    .lc = 3,
    .lp = 0,
    .pb = 2,
    .mode = LZMA_MODE_NORMAL,
    .nice_len = 64,
    .mf = LZMA_MF_BT4,
    .depth = 0,
  };
  lzma_filter fltrs[] = {
    { .id = LZMA_FILTER_LZMA2, .options = &lzopts},
    { .id = LZMA_VLI_UNKNOWN, .options = NULL}
  };

  xzret = lzma_stream_encoder (&strm, fltrs, LZMA_CHECK_NONE);
  if (xzret != LZMA_OK)
    grub_util_error ("%s", _("cannot compress the kernel image"));

  *core_img = xmalloc (kernel_size);

  *core_size = kernel_size;
  strm.next_in = (unsigned char *) kernel_img;
  strm.avail_in = kernel_size;
  strm.next_out = (unsigned char *) *core_img;
  strm.avail_out = *core_size;

  while (1)
    {
      xzret = lzma_code (&strm, LZMA_FINISH);
      if (xzret == LZMA_OK)
	continue;
      if (xzret == LZMA_STREAM_END)
	break;
      grub_util_error ("%s", _("cannot compress the kernel image"));
    }

  *core_size -= strm.avail_out;
}
#endif

static void
compress_kernel (const struct grub_install_image_target_desc *image_target, char *kernel_img,
		 size_t kernel_size, char **core_img, size_t *core_size,
		 grub_compression_t comp)
{
  if (image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS
      && (comp == GRUB_COMPRESSION_LZMA))
    {
      compress_kernel_lzma (kernel_img, kernel_size, core_img,
			    core_size);
      return;
    }

#ifdef USE_LIBLZMA
 if (image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS
     && (comp == GRUB_COMPRESSION_XZ))
   {
     compress_kernel_xz (kernel_img, kernel_size, core_img,
			 core_size);
     return;
   }
#endif

 if (image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS
     && (comp != GRUB_COMPRESSION_NONE))
   grub_util_error (_("unknown compression %d"), comp);

  *core_img = xmalloc (kernel_size);
  memcpy (*core_img, kernel_img, kernel_size);
  *core_size = kernel_size;
}

const struct grub_install_image_target_desc *
grub_install_get_image_target (const char *arg)
{
  unsigned i, j;
  for (i = 0; i < ARRAY_SIZE (image_targets); i++)
    for (j = 0; j < ARRAY_SIZE (image_targets[i].names) &&
		    image_targets[i].names[j]; j++)
      if (strcmp (arg, image_targets[i].names[j]) == 0)
	return &image_targets[i];
  return NULL;
}

const char *
grub_util_get_target_dirname (const struct grub_install_image_target_desc *t)
{
  return t->dirname;
}

const char *
grub_util_get_target_name (const struct grub_install_image_target_desc *t)
{
  return t->names[0];
}

char *
grub_install_get_image_targets_string (void)
{
  int format_len = 0;
  char *formats;
  char *ptr;
  unsigned i;
  for (i = 0; i < ARRAY_SIZE (image_targets); i++)
    format_len += strlen (image_targets[i].names[0]) + 2;
  ptr = formats = xmalloc (format_len);
  for (i = 0; i < ARRAY_SIZE (image_targets); i++)
    {
      strcpy (ptr, image_targets[i].names[0]);
      ptr += strlen (image_targets[i].names[0]);
      *ptr++ = ',';
      *ptr++ = ' ';
    }
  ptr[-2] = 0;

  return formats;
}

/*
 * The image_target parameter is used by the grub_host_to_target32() macro.
 */
static struct grub_pe32_section_table *
init_pe_section(const struct grub_install_image_target_desc *image_target,
		struct grub_pe32_section_table *section,
		const char * const name,
		grub_uint32_t *vma, grub_uint32_t vsz, grub_uint32_t valign,
		grub_uint32_t *rda, grub_uint32_t rsz,
		grub_uint32_t characteristics)
{
  size_t len = strlen (name);

  if (len > sizeof (section->name))
    grub_util_error (_("section name %s length is bigger than %lu"),
		     name, (unsigned long) sizeof (section->name));

  memcpy (section->name, name, len);

  section->virtual_address = grub_host_to_target32 (*vma);
  section->virtual_size = grub_host_to_target32 (vsz);
  (*vma) = ALIGN_UP (*vma + vsz, valign);

  section->raw_data_offset = grub_host_to_target32 (*rda);
  section->raw_data_size = grub_host_to_target32 (rsz);
  (*rda) = ALIGN_UP (*rda + rsz, GRUB_PE32_FILE_ALIGNMENT);

  section->characteristics = grub_host_to_target32 (characteristics);

  return section + 1;
}

/*
 * tmp_ is just here so the compiler knows we'll never derefernce a NULL.
 * It should get fully optimized away.
 */
#define PE_OHDR(o32, o64, field) (*(		\
{						\
  __typeof__((o64)->field) tmp_;		\
  __typeof__((o64)->field) *ret_ = &tmp_;	\
  if (o32)					\
    ret_ = (void *)(&((o32)->field));		\
  else if (o64)				\
    ret_ = (void *)(&((o64)->field));		\
  ret_;					\
}))

void
grub_install_generate_image (const char *dir, const char *prefix,
			     FILE *out, const char *outname, char *mods[],
			     char *memdisk_path, char **pubkey_paths,
			     size_t npubkeys, char *config_path,
			     const struct grub_install_image_target_desc *image_target,
			     int note, grub_compression_t comp, const char *dtb_path,
			     const char *sbat_path, int disable_shim_lock)
{
  char *kernel_img, *core_img;
  size_t total_module_size, core_size;
  size_t memdisk_size = 0, config_size = 0;
  size_t prefix_size = 0, dtb_size = 0, sbat_size = 0;
  char *kernel_path;
  size_t offset;
  struct grub_util_path_list *path_list, *p;
  size_t decompress_size = 0;
  struct grub_mkimage_layout layout;

  if (comp == GRUB_COMPRESSION_AUTO)
    comp = image_target->default_compression;

  if (image_target->id == IMAGE_I386_PC
      || image_target->id == IMAGE_I386_PC_PXE
      || image_target->id == IMAGE_I386_PC_ELTORITO)
    comp = GRUB_COMPRESSION_LZMA;

  path_list = grub_util_resolve_dependencies (dir, "moddep.lst", mods);

  kernel_path = grub_util_get_path (dir, "kernel.img");

  if (image_target->voidp_sizeof == 8)
    total_module_size = sizeof (struct grub_module_info64);
  else
    total_module_size = sizeof (struct grub_module_info32);

  {
    size_t i;
    for (i = 0; i < npubkeys; i++)
      {
	size_t curs;
	curs = ALIGN_ADDR (grub_util_get_image_size (pubkey_paths[i]));
	grub_util_info ("the size of public key %u is 0x%"
			GRUB_HOST_PRIxLONG_LONG,
			(unsigned) i, (unsigned long long) curs);
	total_module_size += curs + sizeof (struct grub_module_header);
      }
  }

  if (memdisk_path)
    {
      memdisk_size = ALIGN_UP(grub_util_get_image_size (memdisk_path), 512);
      grub_util_info ("the size of memory disk is 0x%" GRUB_HOST_PRIxLONG_LONG,
		      (unsigned long long) memdisk_size);
      total_module_size += memdisk_size + sizeof (struct grub_module_header);
    }

  if (dtb_path)
    {
      dtb_size = ALIGN_ADDR(grub_util_get_image_size (dtb_path));
      total_module_size += dtb_size + sizeof (struct grub_module_header);
    }

  if (sbat_path != NULL && image_target->id != IMAGE_EFI)
    grub_util_error (_(".sbat section can be embedded into EFI images only"));

  if (disable_shim_lock)
    total_module_size += sizeof (struct grub_module_header);

  if (config_path)
    {
      config_size = ALIGN_ADDR (grub_util_get_image_size (config_path) + 1);
      grub_util_info ("the size of config file is 0x%" GRUB_HOST_PRIxLONG_LONG,
		      (unsigned long long) config_size);
      total_module_size += config_size + sizeof (struct grub_module_header);
    }

  if (prefix)
    {
      prefix_size = ALIGN_ADDR (strlen (prefix) + 1);
      total_module_size += prefix_size + sizeof (struct grub_module_header);
    }

  for (p = path_list; p; p = p->next)
    total_module_size += (ALIGN_ADDR (grub_util_get_image_size (p->name))
			  + sizeof (struct grub_module_header));

  grub_util_info ("the total module size is 0x%" GRUB_HOST_PRIxLONG_LONG,
		  (unsigned long long) total_module_size);

  if (image_target->voidp_sizeof == 4)
    kernel_img = grub_mkimage_load_image32 (kernel_path, total_module_size,
					    &layout, image_target);
  else
    kernel_img = grub_mkimage_load_image64 (kernel_path, total_module_size,
					    &layout, image_target);
  if ((image_target->id == IMAGE_XEN || image_target->id == IMAGE_XEN_PVH) &&
      layout.align < 4096)
    layout.align = 4096;

  if ((image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
      && (image_target->total_module_size != TARGET_NO_FIELD))
    *((grub_uint32_t *) (kernel_img + image_target->total_module_size))
      = grub_host_to_target32 (total_module_size);

  if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
    {
      memmove (kernel_img + total_module_size, kernel_img, layout.kernel_size);
      memset (kernel_img, 0, total_module_size);
    }

  if (image_target->voidp_sizeof == 8)
    {
      /* Fill in the grub_module_info structure.  */
      struct grub_module_info64 *modinfo;
      if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
	modinfo = (struct grub_module_info64 *) kernel_img;
      else
	modinfo = (struct grub_module_info64 *) (kernel_img + layout.kernel_size);
      modinfo->magic = grub_host_to_target32 (GRUB_MODULE_MAGIC);
      modinfo->offset = grub_host_to_target_addr (sizeof (struct grub_module_info64));
      modinfo->size = grub_host_to_target_addr (total_module_size);
      if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
	offset = sizeof (struct grub_module_info64);
      else
	offset = layout.kernel_size + sizeof (struct grub_module_info64);
    }
  else
    {
      /* Fill in the grub_module_info structure.  */
      struct grub_module_info32 *modinfo;
      if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
	modinfo = (struct grub_module_info32 *) kernel_img;
      else
	modinfo = (struct grub_module_info32 *) (kernel_img + layout.kernel_size);
      modinfo->magic = grub_host_to_target32 (GRUB_MODULE_MAGIC);
      modinfo->offset = grub_host_to_target_addr (sizeof (struct grub_module_info32));
      modinfo->size = grub_host_to_target_addr (total_module_size);
      if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
	offset = sizeof (struct grub_module_info32);
      else
	offset = layout.kernel_size + sizeof (struct grub_module_info32);
    }

  for (p = path_list; p; p = p->next)
    {
      struct grub_module_header *header;
      size_t mod_size;

      mod_size = ALIGN_ADDR (grub_util_get_image_size (p->name));

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_ELF);
      header->size = grub_host_to_target32 (mod_size + sizeof (*header));
      offset += sizeof (*header);

      grub_util_load_image (p->name, kernel_img + offset);
      offset += mod_size;
    }

  {
    size_t i;
    for (i = 0; i < npubkeys; i++)
      {
	size_t curs;
	struct grub_module_header *header;

	curs = grub_util_get_image_size (pubkey_paths[i]);

	header = (struct grub_module_header *) (kernel_img + offset);
	header->type = grub_host_to_target32 (OBJ_TYPE_PUBKEY);
	header->size = grub_host_to_target32 (curs + sizeof (*header));
	offset += sizeof (*header);

	grub_util_load_image (pubkey_paths[i], kernel_img + offset);
	offset += ALIGN_ADDR (curs);
      }
  }

  if (memdisk_path)
    {
      struct grub_module_header *header;

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_MEMDISK);
      header->size = grub_host_to_target32 (memdisk_size + sizeof (*header));
      offset += sizeof (*header);

      grub_util_load_image (memdisk_path, kernel_img + offset);
      offset += memdisk_size;
    }

  if (dtb_path)
    {
      struct grub_module_header *header;

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_DTB);
      header->size = grub_host_to_target32 (dtb_size + sizeof (*header));
      offset += sizeof (*header);

      grub_util_load_image (dtb_path, kernel_img + offset);
      offset += dtb_size;
    }

  if (disable_shim_lock)
    {
      struct grub_module_header *header;

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_DISABLE_SHIM_LOCK);
      header->size = grub_host_to_target32 (sizeof (*header));
      offset += sizeof (*header);
    }

  if (config_path)
    {
      struct grub_module_header *header;

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_CONFIG);
      header->size = grub_host_to_target32 (config_size + sizeof (*header));
      offset += sizeof (*header);

      grub_util_load_image (config_path, kernel_img + offset);
      offset += config_size;
    }

  if (prefix)
    {
      struct grub_module_header *header;

      header = (struct grub_module_header *) (kernel_img + offset);
      header->type = grub_host_to_target32 (OBJ_TYPE_PREFIX);
      header->size = grub_host_to_target32 (prefix_size + sizeof (*header));
      offset += sizeof (*header);

      grub_strcpy (kernel_img + offset, prefix);
      offset += prefix_size;
    }

  grub_util_info ("kernel_img=%p, kernel_size=0x%" GRUB_HOST_PRIxLONG_LONG,
		  kernel_img,
		  (unsigned long long) layout.kernel_size);
  compress_kernel (image_target, kernel_img, layout.kernel_size + total_module_size,
		   &core_img, &core_size, comp);
  free (kernel_img);

  grub_util_info ("the core size is 0x%" GRUB_HOST_PRIxLONG_LONG,
		  (unsigned long long) core_size);

  if (!(image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
      && image_target->total_module_size != TARGET_NO_FIELD)
    *((grub_uint32_t *) (core_img + image_target->total_module_size))
      = grub_host_to_target32 (total_module_size);

  if (image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
    {
      char *full_img;
      size_t full_size;
      char *decompress_path, *decompress_img;
      const char *name;

      switch (comp)
	{
	case GRUB_COMPRESSION_XZ:
	  name = "xz_decompress.img";
	  break;
	case GRUB_COMPRESSION_LZMA:
	  name = "lzma_decompress.img";
	  break;
	case GRUB_COMPRESSION_NONE:
	  name = "none_decompress.img";
	  break;
	default:
	  grub_util_error (_("unknown compression %d"), comp);
	}

      decompress_path = grub_util_get_path (dir, name);
      decompress_size = grub_util_get_image_size (decompress_path);
      decompress_img = grub_util_read_image (decompress_path);

      if ((image_target->id == IMAGE_I386_PC
	   || image_target->id == IMAGE_I386_PC_PXE
	   || image_target->id == IMAGE_I386_PC_ELTORITO)
	  && decompress_size > GRUB_KERNEL_I386_PC_LINK_ADDR - 0x8200)
	grub_util_error ("%s", _("Decompressor is too big"));

      if (image_target->decompressor_compressed_size != TARGET_NO_FIELD)
	*((grub_uint32_t *) (decompress_img
			     + image_target->decompressor_compressed_size))
	  = grub_host_to_target32 (core_size);

      if (image_target->decompressor_uncompressed_size != TARGET_NO_FIELD)
	*((grub_uint32_t *) (decompress_img
			     + image_target->decompressor_uncompressed_size))
	  = grub_host_to_target32 (layout.kernel_size + total_module_size);

      if (image_target->decompressor_uncompressed_addr != TARGET_NO_FIELD)
	{
	  if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
	    *((grub_uint32_t *) (decompress_img + image_target->decompressor_uncompressed_addr))
	      = grub_host_to_target_addr (image_target->link_addr - total_module_size);
	  else
	    *((grub_uint32_t *) (decompress_img + image_target->decompressor_uncompressed_addr))
	      = grub_host_to_target_addr (image_target->link_addr);
	}
      full_size = core_size + decompress_size;

      full_img = xmalloc (full_size);

      memcpy (full_img, decompress_img, decompress_size);

      memcpy (full_img + decompress_size, core_img, core_size);

      free (core_img);
      core_img = full_img;
      core_size = full_size;
      free (decompress_img);
      free (decompress_path);
    }

  switch (image_target->id)
    {
    case IMAGE_I386_PC:
    case IMAGE_I386_PC_PXE:
    case IMAGE_I386_PC_ELTORITO:
	if (GRUB_KERNEL_I386_PC_LINK_ADDR + core_size > 0x78000
	    || (core_size > (0xffff << GRUB_DISK_SECTOR_BITS))
	    || (layout.kernel_size + layout.bss_size
		+ GRUB_KERNEL_I386_PC_LINK_ADDR > 0x68000))
	  grub_util_error (_("core image is too big (0x%x > 0x%x)"),
			   GRUB_KERNEL_I386_PC_LINK_ADDR + (unsigned) core_size,
			   0x78000);
	/* fallthrough */
    case IMAGE_COREBOOT:
    case IMAGE_QEMU:
	if (image_target->elf_target != EM_ARM && layout.kernel_size + layout.bss_size + GRUB_KERNEL_I386_PC_LINK_ADDR > 0x68000)
	  grub_util_error (_("kernel image is too big (0x%x > 0x%x)"),
			   (unsigned) layout.kernel_size + (unsigned) layout.bss_size
			   + GRUB_KERNEL_I386_PC_LINK_ADDR,
			   0x68000);
	break;
    case IMAGE_LOONGSON_ELF:
    case IMAGE_YEELOONG_FLASH:
    case IMAGE_FULOONG2F_FLASH:
    case IMAGE_EFI:
    case IMAGE_MIPS_ARC:
    case IMAGE_QEMU_MIPS_FLASH:
    case IMAGE_XEN:
    case IMAGE_XEN_PVH:
      break;
    case IMAGE_SPARC64_AOUT:
    case IMAGE_SPARC64_RAW:
    case IMAGE_SPARC64_CDCORE:
    case IMAGE_I386_IEEE1275:
    case IMAGE_PPC:
    case IMAGE_UBOOT:
      break;
    }

  switch (image_target->id)
    {
    case IMAGE_I386_PC:
    case IMAGE_I386_PC_PXE:
    case IMAGE_I386_PC_ELTORITO:
      {
	unsigned num;
	char *boot_path, *boot_img;
	size_t boot_size;

	num = ((core_size + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS);
	if (image_target->id == IMAGE_I386_PC_PXE)
	  {
	    char *pxeboot_path, *pxeboot_img;
	    size_t pxeboot_size;
	    grub_uint32_t *ptr;

	    pxeboot_path = grub_util_get_path (dir, "pxeboot.img");
	    pxeboot_size = grub_util_get_image_size (pxeboot_path);
	    pxeboot_img = grub_util_read_image (pxeboot_path);

	    grub_util_write_image (pxeboot_img, pxeboot_size, out,
				   outname);
	    free (pxeboot_img);
	    free (pxeboot_path);

	    /* Remove Multiboot header to avoid confusing ipxe.  */
	    for (ptr = (grub_uint32_t *) core_img;
		 ptr < (grub_uint32_t *) (core_img + MULTIBOOT_SEARCH); ptr++)
	      if (*ptr == grub_host_to_target32 (MULTIBOOT_HEADER_MAGIC)
		  && grub_target_to_host32 (ptr[0])
		  + grub_target_to_host32 (ptr[1])
		  + grub_target_to_host32 (ptr[2]) == 0)
		{
		  *ptr = 0;
		  break;
		}
	  }

	if (image_target->id == IMAGE_I386_PC_ELTORITO)
	  {
	    char *eltorito_path, *eltorito_img;
	    size_t eltorito_size;

	    eltorito_path = grub_util_get_path (dir, "cdboot.img");
	    eltorito_size = grub_util_get_image_size (eltorito_path);
	    eltorito_img = grub_util_read_image (eltorito_path);

	    grub_util_write_image (eltorito_img, eltorito_size, out,
				   outname);
	    free (eltorito_img);
	    free (eltorito_path);
	  }

	boot_path = grub_util_get_path (dir, "diskboot.img");
	boot_size = grub_util_get_image_size (boot_path);
	if (boot_size != GRUB_DISK_SECTOR_SIZE)
	  grub_util_error (_("diskboot.img size must be %u bytes"),
			   GRUB_DISK_SECTOR_SIZE);

	boot_img = grub_util_read_image (boot_path);

	{
	  struct grub_pc_bios_boot_blocklist *block;
	  block = (struct grub_pc_bios_boot_blocklist *) (boot_img
							  + GRUB_DISK_SECTOR_SIZE
							  - sizeof (*block));
	  block->len = grub_host_to_target16 (num);

	  /* This is filled elsewhere.  Verify it just in case.  */
	  assert (block->segment
		  == grub_host_to_target16 (GRUB_BOOT_I386_PC_KERNEL_SEG
					    + (GRUB_DISK_SECTOR_SIZE >> 4)));
	}

	grub_util_write_image (boot_img, boot_size, out, outname);
	free (boot_img);
	free (boot_path);
      }
      break;
    case IMAGE_EFI:
      {
	char *pe_img, *pe_sbat, *header;
	struct grub_pe32_section_table *section;
	size_t n_sections = 4;
	size_t scn_size;
	grub_uint32_t vma, raw_data;
	size_t pe_size, header_size;
	struct grub_pe32_coff_header *c;
	static const grub_uint8_t stub[] = GRUB_PE32_MSDOS_STUB;
	struct grub_pe32_optional_header *o32 = NULL;
	struct grub_pe64_optional_header *o64 = NULL;

	if (image_target->voidp_sizeof == 4)
	  header_size = EFI32_HEADER_SIZE;
	else
	  header_size = EFI64_HEADER_SIZE;

	vma = raw_data = header_size;

	if (sbat_path != NULL)
	  {
	    sbat_size = ALIGN_ADDR (grub_util_get_image_size (sbat_path));
	    sbat_size = ALIGN_UP (sbat_size, GRUB_PE32_FILE_ALIGNMENT);
	  }

	pe_size = ALIGN_UP (header_size + core_size, GRUB_PE32_FILE_ALIGNMENT) +
          ALIGN_UP (layout.reloc_size, GRUB_PE32_FILE_ALIGNMENT) + sbat_size;
	header = pe_img = xcalloc (1, pe_size);

	memcpy (pe_img + raw_data, core_img, core_size);

	/* The magic.  */
	memcpy (header, stub, GRUB_PE32_MSDOS_STUB_SIZE);
	memcpy (header + GRUB_PE32_MSDOS_STUB_SIZE, "PE\0\0",
		GRUB_PE32_SIGNATURE_SIZE);

	/* The COFF file header.  */
	c = (struct grub_pe32_coff_header *) (header + GRUB_PE32_MSDOS_STUB_SIZE
					      + GRUB_PE32_SIGNATURE_SIZE);
	c->machine = grub_host_to_target16 (image_target->pe_target);

	if (sbat_path != NULL)
	  n_sections++;

	c->num_sections = grub_host_to_target16 (n_sections);
	c->time = grub_host_to_target32 (STABLE_EMBEDDING_TIMESTAMP);
	c->characteristics = grub_host_to_target16 (GRUB_PE32_EXECUTABLE_IMAGE
						    | GRUB_PE32_LINE_NUMS_STRIPPED
						    | ((image_target->voidp_sizeof == 4)
						       ? GRUB_PE32_32BIT_MACHINE
						       : 0)
						    | GRUB_PE32_LOCAL_SYMS_STRIPPED
						    | GRUB_PE32_DEBUG_STRIPPED);

	/* The PE Optional header.  */
	if (image_target->voidp_sizeof == 4)
	  {
	    c->optional_header_size = grub_host_to_target16 (sizeof (struct grub_pe32_optional_header));

	    o32 = (struct grub_pe32_optional_header *)
              (header + GRUB_PE32_MSDOS_STUB_SIZE + GRUB_PE32_SIGNATURE_SIZE +
               sizeof (struct grub_pe32_coff_header));
	    o32->magic = grub_host_to_target16 (GRUB_PE32_PE32_MAGIC);
	    o32->data_base = grub_host_to_target32 (header_size + layout.exec_size);

	    section = (struct grub_pe32_section_table *)(o32 + 1);
	  }
	else
	  {
	    c->optional_header_size = grub_host_to_target16 (sizeof (struct grub_pe64_optional_header));
	    o64 = (struct grub_pe64_optional_header *)
		  (header + GRUB_PE32_MSDOS_STUB_SIZE + GRUB_PE32_SIGNATURE_SIZE +
                   sizeof (struct grub_pe32_coff_header));
	    o64->magic = grub_host_to_target16 (GRUB_PE32_PE64_MAGIC);

	    section = (struct grub_pe32_section_table *)(o64 + 1);
	  }

#if __GNUC__ >= 12
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-pointer"
#endif
	PE_OHDR (o32, o64, header_size) = grub_host_to_target32 (header_size);
	PE_OHDR (o32, o64, entry_addr) = grub_host_to_target32 (layout.start_address);
	PE_OHDR (o32, o64, image_base) = 0;
	PE_OHDR (o32, o64, image_size) = grub_host_to_target32 (pe_size);
	PE_OHDR (o32, o64, section_alignment) = grub_host_to_target32 (image_target->section_align);
	PE_OHDR (o32, o64, file_alignment) = grub_host_to_target32 (GRUB_PE32_FILE_ALIGNMENT);
	PE_OHDR (o32, o64, subsystem) = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION);

	/* Do these really matter? */
	PE_OHDR (o32, o64, stack_reserve_size) = grub_host_to_target32 (0x10000);
	PE_OHDR (o32, o64, stack_commit_size) = grub_host_to_target32 (0x10000);
	PE_OHDR (o32, o64, heap_reserve_size) = grub_host_to_target32 (0x10000);
	PE_OHDR (o32, o64, heap_commit_size) = grub_host_to_target32 (0x10000);

	PE_OHDR (o32, o64, num_data_directories) = grub_host_to_target32 (GRUB_PE32_NUM_DATA_DIRECTORIES);

	/* The sections.  */
	PE_OHDR (o32, o64, code_base) = grub_host_to_target32 (vma);
	PE_OHDR (o32, o64, code_size) = grub_host_to_target32 (layout.exec_size);
#if __GNUC__ >= 12
#pragma GCC diagnostic pop
#endif
	section = init_pe_section (image_target, section, ".text",
				   &vma, layout.exec_size,
				   image_target->section_align,
				   &raw_data, layout.exec_size,
				   GRUB_PE32_SCN_CNT_CODE |
				   GRUB_PE32_SCN_MEM_EXECUTE |
				   GRUB_PE32_SCN_MEM_READ);

	scn_size = ALIGN_UP (layout.kernel_size - layout.exec_size, GRUB_PE32_FILE_ALIGNMENT);
#if __GNUC__ >= 12
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-pointer"
#endif
	/* ALIGN_UP (sbat_size, GRUB_PE32_FILE_ALIGNMENT) is done earlier. */
	PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (scn_size + sbat_size +
							       ALIGN_UP (total_module_size,
									 GRUB_PE32_FILE_ALIGNMENT));
#if __GNUC__ >= 12
#pragma GCC diagnostic pop
#endif

	section = init_pe_section (image_target, section, ".data",
				   &vma, scn_size, image_target->section_align,
				   &raw_data, scn_size,
				   GRUB_PE32_SCN_CNT_INITIALIZED_DATA |
				   GRUB_PE32_SCN_MEM_READ |
				   GRUB_PE32_SCN_MEM_WRITE);

	scn_size = pe_size - layout.reloc_size - sbat_size - raw_data;
	section = init_pe_section (image_target, section, "mods",
				   &vma, scn_size, image_target->section_align,
				   &raw_data, scn_size,
				   GRUB_PE32_SCN_CNT_INITIALIZED_DATA |
				   GRUB_PE32_SCN_MEM_READ |
				   GRUB_PE32_SCN_MEM_WRITE);

	if (sbat_path != NULL)
	  {
	    pe_sbat = pe_img + raw_data;
	    grub_util_load_image (sbat_path, pe_sbat);

	    section = init_pe_section (image_target, section, ".sbat",
				       &vma, sbat_size,
				       image_target->section_align,
				       &raw_data, sbat_size,
				       GRUB_PE32_SCN_CNT_INITIALIZED_DATA |
				       GRUB_PE32_SCN_MEM_READ);
	  }

	scn_size = layout.reloc_size;
#if __GNUC__ >= 12
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-pointer"
#endif
	PE_OHDR (o32, o64, base_relocation_table.rva) = grub_host_to_target32 (vma);
	PE_OHDR (o32, o64, base_relocation_table.size) = grub_host_to_target32 (scn_size);
#if __GNUC__ >= 12
#pragma GCC diagnostic pop
#endif
	memcpy (pe_img + raw_data, layout.reloc_section, scn_size);
	init_pe_section (image_target, section, ".reloc",
			 &vma, scn_size, image_target->section_align,
			 &raw_data, scn_size,
			 GRUB_PE32_SCN_CNT_INITIALIZED_DATA |
			 GRUB_PE32_SCN_MEM_DISCARDABLE |
			 GRUB_PE32_SCN_MEM_READ);

	free (core_img);
	core_img = pe_img;
	core_size = pe_size;
      }
      break;
    case IMAGE_QEMU:
      {
	char *rom_img;
	size_t rom_size;
	char *boot_path, *boot_img;
	size_t boot_size;

	boot_path = grub_util_get_path (dir, "boot.img");
	boot_size = grub_util_get_image_size (boot_path);
	boot_img = grub_util_read_image (boot_path);

	/* Rom sizes must be 64k-aligned.  */
	rom_size = ALIGN_UP (core_size + boot_size, 64 * 1024);

	rom_img = xmalloc (rom_size);
	memset (rom_img, 0, rom_size);

	*((grub_int32_t *) (core_img + GRUB_KERNEL_I386_QEMU_CORE_ENTRY_ADDR))
	  = grub_host_to_target32 ((grub_uint32_t) -rom_size);

	memcpy (rom_img, core_img, core_size);

	*((grub_int32_t *) (boot_img + GRUB_BOOT_I386_QEMU_CORE_ENTRY_ADDR))
	  = grub_host_to_target32 ((grub_uint32_t) -rom_size);

	memcpy (rom_img + rom_size - boot_size, boot_img, boot_size);

	free (core_img);
	core_img = rom_img;
	core_size = rom_size;

	free (boot_img);
	free (boot_path);
      }
      break;
    case IMAGE_SPARC64_AOUT:
      {
	void *aout_img;
	size_t aout_size;
	struct grub_aout32_header *aout_head;

	aout_size = core_size + sizeof (*aout_head);
	aout_img = xmalloc (aout_size);
	aout_head = aout_img;
	grub_memset (aout_head, 0, sizeof (*aout_head));
	aout_head->a_midmag = grub_host_to_target32 ((AOUT_MID_SUN << 16)
						     | AOUT32_OMAGIC);
	aout_head->a_text = grub_host_to_target32 (core_size);
	aout_head->a_entry
	  = grub_host_to_target32 (GRUB_BOOT_SPARC64_IEEE1275_IMAGE_ADDRESS);
	memcpy ((char *) aout_img + sizeof (*aout_head), core_img, core_size);

	free (core_img);
	core_img = aout_img;
	core_size = aout_size;
      }
      break;
    case IMAGE_SPARC64_RAW:
      {
	unsigned int num;
	char *boot_path, *boot_img;
	size_t boot_size;

	num = ((core_size + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS);
	num <<= GRUB_DISK_SECTOR_BITS;

	boot_path = grub_util_get_path (dir, "diskboot.img");
	boot_size = grub_util_get_image_size (boot_path);
	if (boot_size != GRUB_DISK_SECTOR_SIZE)
	  grub_util_error (_("diskboot.img size must be %u bytes"),
			   GRUB_DISK_SECTOR_SIZE);

	boot_img = grub_util_read_image (boot_path);

	*((grub_uint32_t *) (boot_img + GRUB_DISK_SECTOR_SIZE
			     - GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE + 8))
	  = grub_host_to_target32 (num);

	grub_util_write_image (boot_img, boot_size, out, outname);
	free (boot_img);
	free (boot_path);
      }
      break;
    case IMAGE_SPARC64_CDCORE:
      break;
    case IMAGE_YEELOONG_FLASH:
    case IMAGE_FULOONG2F_FLASH:
    {
      char *rom_img;
      size_t rom_size;
      char *boot_path, *boot_img;
      size_t boot_size;
      /* fwstart.img is the only part which can't be tested by using *-elf
	 target. Check it against the checksum. */
      const grub_uint8_t yeeloong_fwstart_good_hash[512 / 8] =
	{
	  0x5f, 0x67, 0x46, 0x57, 0x31, 0x30, 0xc5, 0x0a,
	  0xe9, 0x98, 0x18, 0xc9, 0xf3, 0xca, 0x45, 0xa5,
	  0x75, 0x64, 0x6b, 0xbb, 0x24, 0xcd, 0xb4, 0xbc,
	  0xf2, 0x3e, 0x23, 0xf9, 0xc2, 0x6a, 0x8c, 0xde,
	  0x3b, 0x94, 0x9c, 0xcc, 0xa5, 0xa7, 0x58, 0xb1,
	  0xbe, 0x8b, 0x3d, 0x73, 0x98, 0x18, 0x7e, 0x68,
	  0x5e, 0x5f, 0x23, 0x7d, 0x7a, 0xe8, 0x51, 0xf7,
	  0x1a, 0xaf, 0x2f, 0x54, 0x11, 0x2e, 0x5c, 0x25
	};
      const grub_uint8_t fuloong2f_fwstart_good_hash[512 / 8] =
	{
	  0x76, 0x9b, 0xad, 0x6e, 0xa2, 0x39, 0x47, 0x62,
	  0x1f, 0xc9, 0x3a, 0x6d, 0x05, 0x5c, 0x43, 0x5c,
	  0x29, 0x4a, 0x7e, 0x08, 0x2a, 0x31, 0x8f, 0x5d,
	  0x02, 0x84, 0xa0, 0x85, 0xf2, 0xd1, 0xb9, 0x53,
	  0xa2, 0xbc, 0xf2, 0xe1, 0x39, 0x1e, 0x51, 0xb5,
	  0xaf, 0xec, 0x9e, 0xf2, 0xf1, 0xf3, 0x0a, 0x2f,
	  0xe6, 0xf1, 0x08, 0x89, 0xbe, 0xbc, 0x73, 0xab,
	  0x46, 0x50, 0xd6, 0x21, 0xce, 0x8e, 0x24, 0xa7
	};
      const grub_uint8_t *fwstart_good_hash;
      grub_uint8_t fwstart_hash[512 / 8];

      if (image_target->id == IMAGE_FULOONG2F_FLASH)
	{
	  fwstart_good_hash = fuloong2f_fwstart_good_hash;
	  boot_path = grub_util_get_path (dir, "fwstart_fuloong2f.img");
	}
      else
	{
	  fwstart_good_hash = yeeloong_fwstart_good_hash;
	  boot_path = grub_util_get_path (dir, "fwstart.img");
	}

      boot_size = grub_util_get_image_size (boot_path);
      boot_img = grub_util_read_image (boot_path);

      grub_crypto_hash (GRUB_MD_SHA512, fwstart_hash, boot_img, boot_size);

      if (grub_memcmp (fwstart_hash, fwstart_good_hash,
		       GRUB_MD_SHA512->mdlen) != 0)
	/* TRANSLATORS: fwstart.img may still be good, just it wasn't checked.  */
	grub_util_warn ("%s",
			_("fwstart.img doesn't match the known good version. "
			  "proceed at your own risk"));

      if (core_size + boot_size > 512 * 1024)
	grub_util_error ("%s", _("firmware image is too big"));
      rom_size = 512 * 1024;

      rom_img = xmalloc (rom_size);
      memset (rom_img, 0, rom_size);

      memcpy (rom_img, boot_img, boot_size);

      memcpy (rom_img + boot_size, core_img, core_size);

      memset (rom_img + boot_size + core_size, 0,
	      rom_size - (boot_size + core_size));

      free (core_img);
      core_img = rom_img;
      core_size = rom_size;
      free (boot_img);
      free (boot_path);
    }
    break;
    case IMAGE_QEMU_MIPS_FLASH:
    {
      char *rom_img;
      size_t rom_size;

      if (core_size > 512 * 1024)
	grub_util_error ("%s", _("firmware image is too big"));
      rom_size = 512 * 1024;

      rom_img = xmalloc (rom_size);
      memset (rom_img, 0, rom_size);

      memcpy (rom_img, core_img, core_size);

      memset (rom_img + core_size, 0,
	      rom_size - core_size);

      free (core_img);
      core_img = rom_img;
      core_size = rom_size;
    }
    break;

    case IMAGE_UBOOT:
    {
      struct grub_uboot_image_header *hdr;

      hdr = xmalloc (core_size + sizeof (struct grub_uboot_image_header));
      memcpy (hdr + 1, core_img, core_size);

      memset (hdr, 0, sizeof (*hdr));
      hdr->ih_magic = grub_cpu_to_be32_compile_time (GRUB_UBOOT_IH_MAGIC);
      hdr->ih_time = grub_cpu_to_be32 (STABLE_EMBEDDING_TIMESTAMP);
      hdr->ih_size = grub_cpu_to_be32 (core_size);
      hdr->ih_load = 0;
      hdr->ih_ep = 0;
      hdr->ih_type = GRUB_UBOOT_IH_TYPE_KERNEL_NOLOAD;
      hdr->ih_os = GRUB_UBOOT_IH_OS_LINUX;
      hdr->ih_arch = GRUB_UBOOT_IH_ARCH_ARM;
      hdr->ih_comp = GRUB_UBOOT_IH_COMP_NONE;

      grub_crypto_hash (GRUB_MD_CRC32, &hdr->ih_dcrc, hdr + 1, core_size);
      grub_crypto_hash (GRUB_MD_CRC32, &hdr->ih_hcrc, hdr, sizeof (*hdr));

      free (core_img);
      core_img = (char *) hdr;
      core_size += sizeof (struct grub_uboot_image_header);
    }
    break;

    case IMAGE_MIPS_ARC:
      {
	char *ecoff_img;
	struct ecoff_header {
	  grub_uint16_t magic;
	  grub_uint16_t nsec;
	  grub_uint32_t time;
	  grub_uint32_t syms;
	  grub_uint32_t nsyms;
	  grub_uint16_t opt;
	  grub_uint16_t flags;
	  grub_uint16_t magic2;
	  grub_uint16_t version;
	  grub_uint32_t textsize;
	  grub_uint32_t datasize;
	  grub_uint32_t bsssize;
	  grub_uint32_t entry;
	  grub_uint32_t text_start;
	  grub_uint32_t data_start;
	  grub_uint32_t bss_start;
	  grub_uint32_t gprmask;
	  grub_uint32_t cprmask[4];
	  grub_uint32_t gp_value;
	};
	struct ecoff_section
	{
	  char name[8];
	  grub_uint32_t paddr;
	  grub_uint32_t vaddr;
	  grub_uint32_t size;
	  grub_uint32_t file_offset;
	  grub_uint32_t reloc;
	  grub_uint32_t gp;
	  grub_uint16_t nreloc;
	  grub_uint16_t ngp;
	  grub_uint32_t flags;
	};
	struct ecoff_header *head;
	struct ecoff_section *section;
	grub_uint32_t target_addr;
	size_t program_size;

	program_size = ALIGN_ADDR (core_size);
	if (comp == GRUB_COMPRESSION_NONE)
	  target_addr = (image_target->link_addr - decompress_size);
	else
	  target_addr = ALIGN_UP (image_target->link_addr
				  + layout.kernel_size + total_module_size, 32);

	ecoff_img = xmalloc (program_size + sizeof (*head) + sizeof (*section));
	grub_memset (ecoff_img, 0, program_size + sizeof (*head) + sizeof (*section));
	head = (void *) ecoff_img;
	section = (void *) (head + 1);
	head->magic = image_target->bigendian ? grub_host_to_target16 (0x160)
	  : grub_host_to_target16 (0x166);
	head->nsec = grub_host_to_target16 (1);
	head->time = grub_host_to_target32 (0);
	head->opt = grub_host_to_target16 (0x38);
	head->flags = image_target->bigendian
	  ? grub_host_to_target16 (0x207)
	  : grub_host_to_target16 (0x103);
	head->magic2 = grub_host_to_target16 (0x107);
	head->textsize = grub_host_to_target32 (program_size);
	head->entry = grub_host_to_target32 (target_addr);
	head->text_start = grub_host_to_target32 (target_addr);
	head->data_start = grub_host_to_target32 (target_addr + program_size);
	grub_memcpy (section->name, ".text", sizeof (".text") - 1);
	section->vaddr = grub_host_to_target32 (target_addr);
	section->size = grub_host_to_target32 (program_size);
	section->file_offset = grub_host_to_target32 (sizeof (*head) + sizeof (*section));
	if (!image_target->bigendian)
	  {
	    section->paddr = grub_host_to_target32 (0xaa60);
	    section->flags = grub_host_to_target32 (0x20);
	  }
	memcpy (section + 1, core_img, core_size);
	free (core_img);
	core_img = ecoff_img;
	core_size = program_size + sizeof (*head) + sizeof (*section);
      }
      break;
    case IMAGE_LOONGSON_ELF:
    case IMAGE_PPC:
    case IMAGE_XEN:
    case IMAGE_XEN_PVH:
    case IMAGE_COREBOOT:
    case IMAGE_I386_IEEE1275:
      {
	grub_uint64_t target_addr;
	if (image_target->id == IMAGE_LOONGSON_ELF)
	  {
	    if (comp == GRUB_COMPRESSION_NONE)
	      target_addr = (image_target->link_addr - decompress_size);
	    else
	      target_addr = ALIGN_UP (image_target->link_addr
				      + layout.kernel_size + total_module_size, 32);
	  }
	else
	  target_addr = image_target->link_addr;
	if (image_target->voidp_sizeof == 4)
	  grub_mkimage_generate_elf32 (image_target, note, &core_img, &core_size,
				       target_addr, &layout);
	else
	  grub_mkimage_generate_elf64 (image_target, note, &core_img, &core_size,
				       target_addr, &layout);
      }
      break;
    }

  grub_util_write_image (core_img, core_size, out, outname);
  free (core_img);
  free (kernel_path);
  free (layout.reloc_section);

  grub_util_free_path_list (path_list);
}