Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

[linux-2.6-microblaze.git] / arch / loongarch / Makefile

diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index 84689c3..f4cb54d 100644 (file)
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -43,15 +43,37 @@ 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/
@@ -79,8 +101,6 @@ CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
        sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
 endif
 
-head-y := arch/loongarch/kernel/head.o
-
 libs-y += arch/loongarch/lib/
 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a