[arch-releng] [RFC] [PATCH] [configs/releng] Add UEFI boot support via linux >= 3.3 EFI boot stub on x86_64

[Keshav P R]

On Mon, Apr 2, 2012 at 05:07, Gerardo Exequiel Pozzi
<vmlinuz386 at yahoo.com.ar> wrote:
> This only works via EFI shell because we need to pass boot params to kernel.
>
> An aditional EFI shell is provided with an startup script for automatic booting.
>
> Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386 at yahoo.com.ar>
> ---
>  README                  |    3 +++
>  configs/releng/build.sh |   24 ++++++++++++++++++++++++
>  2 files changed, 27 insertions(+)
>
> diff --git a/README b/README
> index 57c87e3..711e51d 100644
> --- a/README
> +++ b/README
> @@ -153,6 +153,9 @@ if nothing is specified on command line.
>  + squashfs-tools          for mksquashfs
>  + libisoburn              for xorriso
>
> +** For configs/releng build.sh needs theses packages (build host):
> + + dosfstools              for mkfs.vfat
> +
>  ** For these hooks needs these packages (on target root-image)
>  * archiso
>  + (none)
> diff --git a/configs/releng/build.sh b/configs/releng/build.sh
> index 2faf210..c041953 100755
> --- a/configs/releng/build.sh
> +++ b/configs/releng/build.sh
> @@ -58,6 +58,29 @@ make_boot() {
>     fi
>  }
>
> +# Prepare EFI "El Torito" boot image (using Linux >= 3.3 EFI boot stub)
> +make_boot_efi() {
> +    if [[ ! -e ${work_dir}/build.${FUNCNAME} ]]; then
> +        if [[ ${arch} == "x86_64" ]]; then
> +            mkdir -p ${work_dir}/iso/EFI/archiso
> +            dd of=${work_dir}/iso/EFI/archiso/efiboot.img bs=1 seek=20M count=0
> +            mkfs.vfat ${work_dir}/iso/EFI/archiso/efiboot.img
> +            mkdir -p ${work_dir}/efiboot
> +            mount ${work_dir}/iso/EFI/archiso/efiboot.img ${work_dir}/efiboot
> +            mkdir -p ${work_dir}/efiboot/EFI/archiso
> +            cp ${work_dir}/iso/${install_dir}/boot/x86_64/vmlinuz ${work_dir}/efiboot/EFI/archiso/vmlinuz.efi
> +            cp ${work_dir}/iso/${install_dir}/boot/x86_64/archiso.img ${work_dir}/efiboot/EFI/archiso/archiso.img
> +            # Always provide an EFI shell for systems without it (most real hardware for home-end-users?).
> +            mkdir -p ${work_dir}/efiboot/EFI/boot
> +            wget -O ${work_dir}/efiboot/EFI/boot/bootx64.efi https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/ShellBinPkg/UefiShell/X64/Shell.efi

You need to use
https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/EdkShellBinPkg/FullShell/X64/Shell_Full.efi
as ShellBinPkg shell will work only in 2.2+ systems (most of the Arch
Lenovo UEFI users reported ShellBinPkg Shell.efi as not working. More
info at http://sourceforge.net/mailarchive/message.php?msg_id=28690732
.

> +            # Added an EFI shell script for automatic boot if ESC-key is not pressed.
> +            echo "\EFI\archiso\vmlinuz.efi initrd=\EFI\archiso\archiso.img archisolabel=${iso_label}" > ${work_dir}/efiboot/EFI/boot/startup.nsh

Are you sure this will work without cd'ing into fso: first? Did you
test this in real hardware like ENV (like DUET
http://www.rodsbooks.com/bios2uefi/index.html)

> +            umount ${work_dir}/efiboot
> +        fi
> +        : > ${work_dir}/build.${FUNCNAME}
> +    fi
> +}
> +
>  # Prepare /${install_dir}/boot/syslinux
>  make_syslinux() {
>     if [[ ! -e ${work_dir}/build.${FUNCNAME} ]]; then
> @@ -259,6 +282,7 @@ make_common_single() {
>     make_packages
>     make_setup_mkinitcpio
>     make_boot
> +    make_boot_efi
>     make_syslinux
>     make_isolinux
>     make_customize_root_image
> --
> 1.7.9.5
>