linux-kernel - [PATCH v5 7/8] riscv: efi: enable generic EFI compressed boot

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Message-Id: <20220910081152.2238369-8-ardb@kernel.org>
Date:   Sat, 10 Sep 2022 10:11:51 +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 7/8] riscv: efi: enable generic EFI compressed boot

Wire up the generic EFI zboot support for RISC-V.

Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
---
 arch/riscv/Makefile        | 6 +++++-
 arch/riscv/boot/.gitignore | 1 +
 arch/riscv/boot/Makefile   | 6 ++++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 3fa8ef336822..d63295e21373 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -136,10 +136,14 @@ ifneq ($(CONFIG_XIP_KERNEL),y)
 ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN),yy)
 KBUILD_IMAGE := $(boot)/loader.bin
 else
+ifeq ($(CONFIG_EFI_ZBOOT),)
 KBUILD_IMAGE := $(boot)/Image.gz
+else
+KBUILD_IMAGE := $(boot)/vmlinuz.efi
+endif
 endif
 endif
-BOOT_TARGETS := Image Image.gz loader loader.bin xipImage
+BOOT_TARGETS := Image Image.gz loader loader.bin xipImage vmlinuz.efi
 
 all:	$(notdir $(KBUILD_IMAGE))
 
diff --git a/arch/riscv/boot/.gitignore b/arch/riscv/boot/.gitignore
index 0cea9f7fa9d5..e1bc507e8cb2 100644
--- a/arch/riscv/boot/.gitignore
+++ b/arch/riscv/boot/.gitignore
@@ -4,4 +4,5 @@ Image.*
 loader
 loader.lds
 loader.bin
+vmlinuz*
 xipImage
diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
index becd0621071c..d1a49adcb1d7 100644
--- a/arch/riscv/boot/Makefile
+++ b/arch/riscv/boot/Makefile
@@ -58,3 +58,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE
 
 $(obj)/loader.bin: $(obj)/loader FORCE
 	$(call if_changed,objcopy)
+
+EFI_ZBOOT_PAYLOAD	:= Image
+EFI_ZBOOT_BFD_TARGET	:= elf$(BITS)-littleriscv
+EFI_ZBOOT_MACH_TYPE	:= RISCV$(BITS)
+
+include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot
-- 
2.35.1