Add support to run SMM handler in TSEG instead of ASEG

[coreboot.git] / src / cpu / x86 / smm / Makefile.inc

diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc
index 42413510e9e599e69714560433adf8b50941ee70..108f8f979b47f34b93744e5196eb7cadb368891e 100644 (file)
--- a/src/cpu/x86/smm/Makefile.inc
+++ b/src/cpu/x86/smm/Makefile.inc
@@ -17,24 +17,36 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
-obj-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.o
-obj-$(CONFIG_HAVE_SMI_HANDLER) += smm_wrap.o
+ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.S
+ifeq ($(CONFIG_HAVE_SMI_HANDLER),y)
+ramstage-srcs += $(obj)/cpu/x86/smm/smm_wrap
+endif
 
-smmobj-y += smmhandler.o
-smmobj-y += smihandler.o
-smmobj-y += smiutil.o
+# 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
 
-$(obj)/cpu/x86/smm/smm.o: $$(smmobjs)
+smm-y += smihandler.c
+smm-y += smiutil.c
+
+$(obj)/cpu/x86/smm/smm.o: $$(smm-objs)
        $(CC) $(LDFLAGS) -nostdlib -r -o $@ $^
 
-$(obj)/cpu/x86/smm/smm: $(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
 
 # change to the target path because objcopy will use the path name in its
 # ELF symbol names.
-$(obj)/cpu/x86/smm/smm_wrap.o: $(obj)/cpu/x86/smm/smm
+$(obj)/cpu/x86/smm/smm_wrap.ramstage.o: $(obj)/cpu/x86/smm/smm_wrap
        @printf "    OBJCOPY    $(subst $(obj)/,,$(@))\n"
-       cd $(obj)/cpu/x86/smm; $(OBJCOPY) -I binary smm -O elf32-i386 -B i386 smm_wrap.o
+       cd $(obj)/cpu/x86/smm; $(OBJCOPY) -I binary smm -O elf32-i386 -B i386 smm_wrap.ramstage.o