config BR2_TARGET_GRUB2_ARCH_SUPPORTS bool default y if BR2_i386 default y if BR2_x86_64 config BR2_TARGET_GRUB2 bool "grub2" depends on BR2_TARGET_GRUB2_ARCH_SUPPORTS depends on BR2_USE_WCHAR help GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader, which was originally designed and implemented by Erich Stefan Boleyn. GRUB 2 has replaced what was formerly known as GRUB (i.e. version 0.9x), which has, in turn, become GRUB Legacy. Amongst others, GRUB2 offers EFI support, which GRUB Legacy doesn't provide. For additional notes on using Grub 2 with Buildroot, see boot/grub2/readme.txt http://www.gnu.org/software/grub/ if BR2_TARGET_GRUB2 choice prompt "Platform" config BR2_TARGET_GRUB2_I386_PC bool "i386-pc" help Select this option if the platform you're targetting is a x86 or x86-64 legacy BIOS based platform. config BR2_TARGET_GRUB2_I386_EFI bool "i386-efi" help Select this option if the platform you're targetting has a 32 bits EFI BIOS. Note that some x86-64 platforms use a 32 bits EFI BIOS, and this option should be used in this case. config BR2_TARGET_GRUB2_X86_64_EFI bool "x86-64-efi" depends on BR2_ARCH_IS_64 help Select this option if the platform you're targetting has a 64 bits EFI BIOS. endchoice if BR2_TARGET_GRUB2_I386_PC config BR2_TARGET_GRUB2_BOOT_PARTITION string "boot partition" default "hd0,msdos1" help Specify the partition where the /boot/grub/grub.cfg file is located. Use 'hd0,msdos1' for the first partition of the first disk if using a legacy partition table, or 'hd0,gpt1' if using GPT partition table. endif # BR2_TARGET_GRUB2_I386_PC config BR2_TARGET_GRUB2_BUILTIN_MODULES string "builtin modules" default "boot linux ext2 fat squash4 part_msdos part_gpt normal biosdisk" if BR2_TARGET_GRUB2_I386_PC default "boot linux ext2 fat squash4 part_msdos part_gpt normal efi_gop" \ if BR2_TARGET_GRUB2_I386_EFI || BR2_TARGET_GRUB2_X86_64_EFI config BR2_TARGET_GRUB2_BUILTIN_CONFIG string "builtin config" help Path to a Grub 2 configuration file that will be embedded into the Grub image itself. This allows to set the root device and other configuration parameters, but however menu entries cannot be described in this embedded configuration. endif # BR2_TARGET_GRUB2 comment "grub2 needs a toolchain w/ wchar" depends on BR2_TARGET_GRUB2_ARCH_SUPPORTS depends on !BR2_USE_WCHAR