diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/mips/loongson64/Platform | |
| parent | Initial commit. (diff) | |
| download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/loongson64/Platform')
| -rw-r--r-- | arch/mips/loongson64/Platform | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/mips/loongson64/Platform b/arch/mips/loongson64/Platform new file mode 100644 index 000000000..e2354e128 --- /dev/null +++ b/arch/mips/loongson64/Platform @@ -0,0 +1,37 @@ +# +# Loongson Processors' Support +# + + +cflags-$(CONFIG_CPU_LOONGSON64) += -Wa,--trap + +# +# binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a +# as MIPS64 R2; older versions as just R1. This leaves the possibility open +# that GCC might generate R2 code for -march=loongson3a which then is rejected +# by GAS. The cc-option can't probe for this behaviour so -march=loongson3a +# can't easily be used safely within the kbuild framework. +# +ifeq ($(call cc-ifversion, -ge, 0409, y), y) + ifeq ($(call ld-ifversion, -ge, 225000000, y), y) + cflags-$(CONFIG_CPU_LOONGSON64) += \ + $(call cc-option,-march=loongson3a -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) + else + cflags-$(CONFIG_CPU_LOONGSON64) += \ + $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) + endif +else + cflags-$(CONFIG_CPU_LOONGSON64) += \ + $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) +endif + +# Some -march= flags enable MMI instructions, and GCC complains about that +# support being enabled alongside -msoft-float. Thus explicitly disable MMI. +cflags-y += $(call cc-option,-mno-loongson-mmi) + +# +# Loongson Machines' Support +# + +cflags-$(CONFIG_MACH_LOONGSON64) += -I$(srctree)/arch/mips/include/asm/mach-loongson64 -mno-branch-likely +load-$(CONFIG_CPU_LOONGSON64) += 0xffffffff80200000 |