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| author | Stefan Reinauer <reinauer@chromium.org> | 2012-04-02 13:24:04 -0700 |
|---|---|---|
| committer | Peter Stuge <peter@stuge.se> | 2012-04-04 04:49:09 +0200 |
| commit | 3aa067f595115a62afdfc9acc33f08e9c96da850 (patch) | |
| tree | 1dad56c263c7f84d59440ec32654de76b78d6f2b /src/cpu/x86/smm/Makefile.inc | |
| parent | 6efbebdb58357b8d1aad43f51c91defd452296f6 (diff) | |
| download | coreboot-3aa067f595115a62afdfc9acc33f08e9c96da850.tar.xz | |
Add support to run SMM handler in TSEG instead of ASEG
Traditionally coreboot's SMM handler runs in ASEG (0xa0000),
"behind" the graphics memory. This approach has two issues:
- It limits the possible size of the SMM handler (and the
number of CPUs supported in a system)
- It's not considered a supported path anymore in newer CPUs.
Change-Id: I9f2877e46873ab2ea8f1157ead4bc644a50be19e
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Acked-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/842
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/x86/smm/Makefile.inc')
| -rw-r--r-- | src/cpu/x86/smm/Makefile.inc | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc index 85bb45472b..108f8f979b 100644 --- a/src/cpu/x86/smm/Makefile.inc +++ b/src/cpu/x86/smm/Makefile.inc @@ -22,15 +22,25 @@ ifeq ($(CONFIG_HAVE_SMI_HANDLER),y) ramstage-srcs += $(obj)/cpu/x86/smm/smm_wrap endif +# Use TSEG specific entry point and linker script +ifeq ($(CONFIG_SMM_TSEG),y) +smm-y += smmhandler_tseg.S +SMM_LDFLAGS := $(LDFLAGS) -pie +SMM_LDSCRIPT := smm_tseg.ld +else smm-y += smmhandler.S +SMM_LDFLAGS := $(LDFLAGFS) +SMM_LDSCRIPT := smm.ld +endif + smm-y += smihandler.c smm-y += smiutil.c $(obj)/cpu/x86/smm/smm.o: $$(smm-objs) $(CC) $(LDFLAGS) -nostdlib -r -o $@ $^ -$(obj)/cpu/x86/smm/smm_wrap: $(obj)/cpu/x86/smm/smm.o $(src)/cpu/x86/smm/smm.ld $(obj)/ldoptions - $(CC) $(LDFLAGS) -nostdlib -nostartfiles -static -o $(obj)/cpu/x86/smm/smm.elf -T $(src)/cpu/x86/smm/smm.ld $(obj)/cpu/x86/smm/smm.o +$(obj)/cpu/x86/smm/smm_wrap: $(obj)/cpu/x86/smm/smm.o $(src)/cpu/x86/smm/$(SMM_LDSCRIPT) $(obj)/ldoptions + $(CC) $(SMM_LDFLAGS) -nostdlib -nostartfiles -static -o $(obj)/cpu/x86/smm/smm.elf -T $(src)/cpu/x86/smm/$(SMM_LDSCRIPT) $(obj)/cpu/x86/smm/smm.o $(NM) -n $(obj)/cpu/x86/smm/smm.elf | sort > $(obj)/cpu/x86/smm/smm.map $(OBJCOPY) -O binary $(obj)/cpu/x86/smm/smm.elf $(obj)/cpu/x86/smm/smm |