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| author | Stewart Smith <stewart@flamingspork.com> | 2021-12-20 22:22:46 +1000 |
|---|---|---|
| committer | Cédric Le Goater <clg@kaod.org> | 2022-01-03 16:12:45 +0100 |
| commit | a6816a42c1f40481c998177b2b88329984ed25b2 (patch) | |
| tree | a16e18b13ebec97cd8f1704b26d439f6d4da7a31 /Makefile.main | |
| parent | b2b4b311c4a2a084bb072eeaf8d9e0409a9eedd5 (diff) | |
| download | skiboot-a6816a42c1f40481c998177b2b88329984ed25b2.zip skiboot-a6816a42c1f40481c998177b2b88329984ed25b2.tar.gz skiboot-a6816a42c1f40481c998177b2b88329984ed25b2.tar.bz2 | |
Add CONFIG_P8 with PHB3 behind it
We can use a base CPU of POWER9 if we don't have P8.
We can also hide PHB3 code behind this,
and shave 12kb off skiboot.lid.xz
Reviewed-by: Dan Horák <dan@danny.cz>
[npiggin: add cpp define, fail gracefully on P8]
Signed-off-by: Stewart Smith <stewart@flamingspork.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Diffstat (limited to 'Makefile.main')
| -rw-r--r-- | Makefile.main | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/Makefile.main b/Makefile.main index c8a63e8..2a346a6 100644 --- a/Makefile.main +++ b/Makefile.main @@ -96,7 +96,11 @@ CPPFLAGS += -DDEBUG -DCCAN_LIST_DEBUG endif CFLAGS := -fno-strict-aliasing -pie -fpie -fno-pic -m64 -fno-asynchronous-unwind-tables +ifeq ($(CONFIG_P8),1) CFLAGS += -mcpu=power8 +else +CFLAGS += -mcpu=power9 +endif CFLAGS += -Wl,--oformat,elf64-powerpc -ggdb # r13,r14,r15 are preserved for OS to use as fixed registers. # These could be saved and restored in and out of skiboot, but it's more @@ -156,6 +160,10 @@ else CFLAGS += -fno-stack-protector endif +# Add preprocessor defines for CONFIG_ options here +ifeq ($(CONFIG_P8),1) +CFLAGS += -DCONFIG_P8=1 +endif CFLAGS += $(call try-cflag,$(CC),-Wjump-misses-init) \ $(call try-cflag,$(CC),-Wsuggest-attribute=const) \ @@ -173,7 +181,12 @@ LDFLAGS := -m64 -static -nostdlib -pie LDFLAGS += -Wl,-pie LDFLAGS += -Wl,-Ttext-segment,$(LD_TEXT) -Wl,-N -Wl,--build-id=none LDFLAGS += -Wl,--no-multi-toc -LDFLAGS += -mcpu=power8 -Wl,--oformat,elf64-powerpc +ifeq ($(CONFIG_P8),1) +LDFLAGS += -mcpu=power8 +else +LDFLAGS += -mcpu=power9 +endif +LDFLAGS += -Wl,--oformat,elf64-powerpc LDFLAGS_FINAL = -m elf64lppc --no-multi-toc -N --build-id=none --whole-archive LDFLAGS_FINAL += -static -nostdlib -pie -Ttext-segment=$(LD_TEXT) --oformat=elf64-powerpc LDFLAGS_FINAL += --orphan-handling=warn |