Re: [PATCH v5 8/8] loongarch: efi: enable generic EFI compressed boot

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Hi, Ard,

I prefer to give a chance to disable ZBOOT, so I don't want to select EFI_ZBOOT unconditionally in Kconfig, and then the Makefile can be like this:
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index c3f579bdf9e5..bc6fe65125f5 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -14,6 +14,10 @@ else
 KBUILD_IMAGE   := $(boot)/vmlinux.efi
 endif

+ifdef CONFIG_EFI_ZBOOT
+KBUILD_IMAGE    := $(boot)/vmlinuz.efi
+endif
+
 archscripts: scripts_basic
        $(Q)$(MAKE) $(build)=arch/loongarch/boot/tools relocs

Huacai


> -----原始邮件-----
> 发件人: "Ard Biesheuvel" <ardb@xxxxxxxxxx>
> 发送时间:2022-09-10 16:11:52 (星期六)
> 收件人: linux-efi@xxxxxxxxxxxxxxx
> 抄送: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "Ard Biesheuvel" <ardb@xxxxxxxxxx>, "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, "Matthew Garrett" <mjg59@xxxxxxxxxxxxx>, "Peter Jones" <pjones@xxxxxxxxxx>, "Ilias Apalodimas" <ilias.apalodimas@xxxxxxxxxx>, "Heinrich Schuchardt" <heinrich.schuchardt@xxxxxxxxxxxxx>, "AKASHI Takahiro" <takahiro.akashi@xxxxxxxxxx>, "Palmer Dabbelt" <palmer@xxxxxxxxxxx>, "Atish Patra" <atishp@xxxxxxxxxxxxxx>, "Arnd Bergmann" <arnd@xxxxxxxx>, "Huacai Chen" <chenhuacai@xxxxxxxxxxx>, "Xi Ruoyao" <xry111@xxxxxxxxxxx>, "Lennart Poettering" <lennart@xxxxxxxxxxxxxx>, "Jeremy Linton" <jeremy.linton@xxxxxxx>, "Will Deacon" <will@xxxxxxxxxx>, "Catalin Marinas" <catalin.marinas@xxxxxxx>
> 主题: [PATCH v5 8/8] loongarch: efi: enable generic EFI compressed boot
> 
> Wire up the generic EFI zboot support for LoongArch64
> 
> Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
> ---
>  arch/loongarch/Kconfig         | 1 +
>  arch/loongarch/Makefile        | 4 ++--
>  arch/loongarch/boot/.gitignore | 1 +
>  arch/loongarch/boot/Makefile   | 6 ++++++
>  4 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
> index fca106a8b8af..f960dbbfb62d 100644
> --- a/arch/loongarch/Kconfig
> +++ b/arch/loongarch/Kconfig
> @@ -55,6 +55,7 @@ config LOONGARCH
>  	select BUILDTIME_TABLE_SORT
>  	select COMMON_CLK
>  	select EFI
> +	select EFI_ZBOOT
>  	select GENERIC_CLOCKEVENTS
>  	select GENERIC_CMOS_UPDATE
>  	select GENERIC_CPU_AUTOPROBE
> diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
> index 4bc47f47cfd8..357ed2a771bf 100644
> --- a/arch/loongarch/Makefile
> +++ b/arch/loongarch/Makefile
> @@ -10,7 +10,7 @@ KBUILD_DEFCONFIG := loongson3_defconfig
>  ifndef CONFIG_EFI_STUB
>  KBUILD_IMAGE	:= $(boot)/vmlinux.elf
>  else
> -KBUILD_IMAGE	:= $(boot)/vmlinux.efi
> +KBUILD_IMAGE	:= $(boot)/vmlinuz.efi
>  endif
>  
>  #
> @@ -93,7 +93,7 @@ vdso_install:
>  
>  all:	$(notdir $(KBUILD_IMAGE))
>  
> -vmlinux.elf vmlinux.efi: vmlinux
> +vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux
>  	$(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $(boot)/$@
>  
>  install:
> diff --git a/arch/loongarch/boot/.gitignore b/arch/loongarch/boot/.gitignore
> index 49423ee96ef3..e5dc594dc4b6 100644
> --- a/arch/loongarch/boot/.gitignore
> +++ b/arch/loongarch/boot/.gitignore
> @@ -1,2 +1,3 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  vmlinux*
> +vmlinuz*
> diff --git a/arch/loongarch/boot/Makefile b/arch/loongarch/boot/Makefile
> index fecf34f50e56..4e1c374c5782 100644
> --- a/arch/loongarch/boot/Makefile
> +++ b/arch/loongarch/boot/Makefile
> @@ -18,3 +18,9 @@ $(obj)/vmlinux.elf: vmlinux FORCE
>  targets += vmlinux.efi
>  $(obj)/vmlinux.efi: vmlinux FORCE
>  	$(call if_changed,objcopy)
> +
> +EFI_ZBOOT_PAYLOAD      := vmlinux.efi
> +EFI_ZBOOT_BFD_TARGET   := elf64-loongarch
> +EFI_ZBOOT_MACH_TYPE    := LOONGARCH64
> +
> +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot
> -- 
> 2.35.1


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