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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/loongarch/Makefile
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/loongarch/Makefile')
-rw-r--r--arch/loongarch/Makefile132
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
new file mode 100644
index 000000000..ed47a3a87
--- /dev/null
+++ b/arch/loongarch/Makefile
@@ -0,0 +1,132 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Author: Huacai Chen <chenhuacai@loongson.cn>
+# Copyright (C) 2020-2022 Loongson Technology Corporation Limited
+
+boot := arch/loongarch/boot
+
+KBUILD_DEFCONFIG := loongson3_defconfig
+
+image-name-y := vmlinux
+image-name-$(CONFIG_EFI_ZBOOT) := vmlinuz
+
+ifndef CONFIG_EFI_STUB
+KBUILD_IMAGE := $(boot)/vmlinux.elf
+else
+KBUILD_IMAGE := $(boot)/$(image-name-y).efi
+endif
+
+#
+# Select the object file format to substitute into the linker script.
+#
+64bit-tool-archpref = loongarch64
+32bit-bfd = elf32-loongarch
+64bit-bfd = elf64-loongarch
+32bit-emul = elf32loongarch
+64bit-emul = elf64loongarch
+
+ifdef CONFIG_64BIT
+tool-archpref = $(64bit-tool-archpref)
+UTS_MACHINE := loongarch64
+endif
+
+ifneq ($(SUBARCH),$(ARCH))
+ ifeq ($(CROSS_COMPILE),)
+ CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
+ endif
+endif
+
+ifdef CONFIG_64BIT
+ld-emul = $(64bit-emul)
+cflags-y += -mabi=lp64s
+endif
+
+cflags-y += -G0 -pipe -msoft-float
+LDFLAGS_vmlinux += -G0 -static -n -nostdlib
+
+# When the assembler supports explicit relocation hint, we must use it.
+# GCC may have -mexplicit-relocs off by default if it was built with an old
+# assembler, so we force it via an option.
+#
+# When the assembler does not supports explicit relocation hint, we can't use
+# it. Disable it if the compiler supports it.
+#
+# If you've seen "unknown reloc hint" message building the kernel and you are
+# now wondering why "-mexplicit-relocs" is not wrapped with cc-option: the
+# combination of a "new" assembler and "old" compiler is not supported. Either
+# upgrade the compiler or downgrade the assembler.
+ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS
+cflags-y += -mexplicit-relocs
+KBUILD_CFLAGS_KERNEL += -mdirect-extern-access
+else
+cflags-y += $(call cc-option,-mno-explicit-relocs)
+KBUILD_AFLAGS_KERNEL += -Wa,-mla-global-with-pcrel
+KBUILD_CFLAGS_KERNEL += -Wa,-mla-global-with-pcrel
+KBUILD_AFLAGS_MODULE += -Wa,-mla-global-with-abs
+KBUILD_CFLAGS_MODULE += -fplt -Wa,-mla-global-with-abs,-mla-local-with-abs
+endif
+
+cflags-y += -ffreestanding
+cflags-y += $(call cc-option, -mno-check-zero-division)
+
+ifndef CONFIG_PHYSICAL_START
+load-y = 0x9000000000200000
+else
+load-y = $(CONFIG_PHYSICAL_START)
+endif
+bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y)
+
+drivers-$(CONFIG_PCI) += arch/loongarch/pci/
+
+KBUILD_AFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
+
+# This is required to get dwarf unwinding tables into .debug_frame
+# instead of .eh_frame so we don't discard them.
+KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
+
+# Don't emit unaligned accesses.
+# Not all LoongArch cores support unaligned access, and as kernel we can't
+# rely on others to provide emulation for these accesses.
+KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
+
+KBUILD_CFLAGS += -isystem $(shell $(CC) -print-file-name=include)
+
+KBUILD_LDFLAGS += -m $(ld-emul)
+
+ifdef CONFIG_LOONGARCH
+CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
+ grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
+ sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
+endif
+
+libs-y += arch/loongarch/lib/
+libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
+
+ifeq ($(KBUILD_EXTMOD),)
+prepare: vdso_prepare
+vdso_prepare: prepare0
+ $(Q)$(MAKE) $(build)=arch/loongarch/vdso include/generated/vdso-offsets.h
+endif
+
+PHONY += vdso_install
+vdso_install:
+ $(Q)$(MAKE) $(build)=arch/loongarch/vdso $@
+
+all: $(notdir $(KBUILD_IMAGE))
+
+vmlinuz.efi: vmlinux.efi
+
+vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $(boot)/$@
+
+install:
+ $(Q)install -D -m 755 $(KBUILD_IMAGE) $(INSTALL_PATH)/$(image-name-y)-$(KERNELRELEASE)
+ $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
+ $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
+
+define archhelp
+ echo ' install - install kernel into $(INSTALL_PATH)'
+ echo
+endef