From 3aa067f595115a62afdfc9acc33f08e9c96da850 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Mon, 2 Apr 2012 13:24:04 -0700 Subject: 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 Acked-by: Stefan Reinauer Reviewed-on: http://review.coreboot.org/842 Reviewed-by: Peter Stuge Tested-by: build bot (Jenkins) --- src/cpu/x86/smm/Makefile.inc | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'src/cpu/x86/smm/Makefile.inc') 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 -- cgit v1.2.3