linux-kernel - [PATCH v5 8/8] loongarch: efi: enable generic EFI compressed boot

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Date:   Sat, 10 Sep 2022 10:11:52 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     linux-efi@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Ard Biesheuvel <ardb@...nel.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>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>
Subject: [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@...nel.org>
---
 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