diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-08-19 18:20:37 +0800 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2022-09-06 11:19:34 +0200 |
| commit | ead384d956345681e1ddf97890d5e15ded015f07 (patch) | |
| tree | aa03bbe0c8e154a3743f28b7eccb281912c20dec /arch/loongarch/Makefile | |
| parent | 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff) | |
| download | linux-ead384d956345681e1ddf97890d5e15ded015f07.tar.bz2 | |
efi/loongarch: Add efistub booting support
This patch adds efistub booting support, which is the standard UEFI boot
protocol for LoongArch to use.
We use generic efistub, which means we can pass boot information (i.e.,
system table, memory map, kernel command line, initrd) via a light FDT
and drop a lot of non-standard code.
We use a flat mapping to map the efi runtime in the kernel's address
space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result,
flat mapping is not identity mapping, SetVirtualAddressMap() is still
needed for the efi runtime.
Tested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
[ardb: change fpic to fpie as suggested by Xi Ruoyao]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'arch/loongarch/Makefile')
| -rw-r--r-- | arch/loongarch/Makefile | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile index ec3de6191276..4bc47f47cfd8 100644 --- a/arch/loongarch/Makefile +++ b/arch/loongarch/Makefile @@ -7,7 +7,11 @@ boot := arch/loongarch/boot KBUILD_DEFCONFIG := loongson3_defconfig -KBUILD_IMAGE = $(boot)/vmlinux +ifndef CONFIG_EFI_STUB +KBUILD_IMAGE := $(boot)/vmlinux.elf +else +KBUILD_IMAGE := $(boot)/vmlinux.efi +endif # # Select the object file format to substitute into the linker script. @@ -75,6 +79,7 @@ endif head-y := arch/loongarch/kernel/head.o libs-y += arch/loongarch/lib/ +libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a ifeq ($(KBUILD_EXTMOD),) prepare: vdso_prepare @@ -86,10 +91,10 @@ PHONY += vdso_install vdso_install: $(Q)$(MAKE) $(build)=arch/loongarch/vdso $@ -all: $(KBUILD_IMAGE) +all: $(notdir $(KBUILD_IMAGE)) -$(KBUILD_IMAGE): vmlinux - $(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $@ +vmlinux.elf vmlinux.efi: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $(boot)/$@ install: $(Q)install -D -m 755 $(KBUILD_IMAGE) $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) |