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Message-ID: <CAMj1kXHFsSUHjyuwj3aThoq=oZdEJca9XSCu=Fbkhk+qTj6khQ@mail.gmail.com>
Date:   Sat, 17 Sep 2022 18:36:38 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     linux-efi@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Matthew Garrett <mjg59@...f.ucam.org>,
        Peter Jones <pjones@...hat.com>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Heinrich Schuchardt <heinrich.schuchardt@...onical.com>,
        AKASHI Takahiro <takahiro.akashi@...aro.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Atish Patra <atishp@...shpatra.org>,
        Arnd Bergmann <arnd@...db.de>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Xi Ruoyao <xry111@...111.site>,
        Lennart Poettering <lennart@...ttering.net>,
        Jeremy Linton <jeremy.linton@....com>
Subject: Re: [PATCH v5 6/8] arm64: efi: enable generic EFI compressed boot

On Sat, 10 Sept 2022 at 10:12, Ard Biesheuvel <ardb@...nel.org> wrote:
>
> Wire up the generic EFI zboot support for arm64.
>
> Signed-off-by: Ard Biesheuvel <ardb@...nel.org>

I've queued up most of this now for 6.1 - Catalin, Will, any
objections if I queue this one as well via the efi tree?

> ---
>  arch/arm64/Makefile        | 9 +++++++--
>  arch/arm64/boot/.gitignore | 1 +
>  arch/arm64/boot/Makefile   | 6 ++++++
>  3 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
> index 6d9d4a58b898..a82bb3599094 100644
> --- a/arch/arm64/Makefile
> +++ b/arch/arm64/Makefile
> @@ -151,12 +151,17 @@ libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
>
>  # Default target when executing plain make
>  boot           := arch/arm64/boot
> +
> +ifeq ($(CONFIG_EFI_ZBOOT),)
>  KBUILD_IMAGE   := $(boot)/Image.gz
> +else
> +KBUILD_IMAGE   := $(boot)/vmlinuz.efi
> +endif
>
> -all:   Image.gz
> +all:   $(notdir $(KBUILD_IMAGE))
>
>
> -Image: vmlinux
> +Image vmlinuz.efi: vmlinux
>         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
>
>  Image.%: Image
> diff --git a/arch/arm64/boot/.gitignore b/arch/arm64/boot/.gitignore
> index 9a7a9009d43a..af5dc61f8b43 100644
> --- a/arch/arm64/boot/.gitignore
> +++ b/arch/arm64/boot/.gitignore
> @@ -1,3 +1,4 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  Image
>  Image.gz
> +vmlinuz*
> diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile
> index a0e3dedd2883..c65aee088410 100644
> --- a/arch/arm64/boot/Makefile
> +++ b/arch/arm64/boot/Makefile
> @@ -38,3 +38,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE
>
>  $(obj)/Image.zst: $(obj)/Image FORCE
>         $(call if_changed,zstd)
> +
> +EFI_ZBOOT_PAYLOAD      := Image
> +EFI_ZBOOT_BFD_TARGET   := elf64-littleaarch64
> +EFI_ZBOOT_MACH_TYPE    := ARM64
> +
> +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot
> --
> 2.35.1
>

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