Patch set updated for coreboot: bf34b57 Makefile: split romstage linking to separate rules

[Kyösti Mälkki]

Kyösti Mälkki ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/803

-gerrit

commit bf34b57ec47f525055157f4e5ec0f77c151ea2e4
Author: Kyösti Mälkki 
Date:   Sat Mar 31 10:21:29 2012 +0300

Makefile: split romstage linking to separate rules

After change it is more clear how romstage is linked twice and with
    what scripts. Also with the change, it is easier to add some
    object of static size that need to be re-compiled for the 2nd link.
    One such object could be md5sum of executable.

Change-Id: Ib34d1876071a51345c5c7319a0ed937868817fd1
    Signed-off-by: Kyösti Mälkki 
---
 src/arch/x86/Makefile.inc |   41 ++++++++++++++++++++++++++++-------------
 1 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 5917ce5..f131af9 100755
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -274,9 +274,8 @@ $(obj)/coreboot.pre: $(obj)/coreboot.romstage $(obj)/coreboot.pre1 $(CBFSTOOL)
    @printf "    CBFS       $(subst $(obj)/,,$(@))\n"
    cp $(obj)/coreboot.pre1 $@.tmp
    $(CBFSTOOL) $@.tmp add-stage $(obj)/romstage.elf \
-	    $(CONFIG_CBFS_PREFIX)/romstage x 0x$(shell cat $(obj)/location.txt)
+		$(CONFIG_CBFS_PREFIX)/romstage x $(shell cat $(obj)/location.txt)
    mv $@.tmp $@
-#FIXME: location.txt might require an offset of header size

#######################################################################
 # Build the bootblock
@@ -344,26 +343,42 @@ $(obj)/bootblock.elf: $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.o $(obj)/bootbl

#######################################################################
 # Build the romstage
-$(obj)/coreboot.romstage: $(obj)/coreboot.pre1 $$(romstage-objs) $(obj)/romstage/ldscript.ld
+
+$(obj)/romstage.bin: $$(romstage-objs) $(obj)/romstage/link1st.ld
    @printf "    LINK       $(subst $(obj)/,,$(@))\n"
-	printf "ROMSTAGE_BASE = 0x0;\n" > $(obj)/location.ld
-	$(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/ldscript.ld $(romstage-objs)
-	$(OBJCOPY) -O binary $(obj)/romstage.elf $(obj)/romstage.bin
-	printf "ROMSTAGE_BASE = 0x" > $(obj)/location.ld
-	$(CBFSTOOL) $(obj)/coreboot.pre1 locate $(obj)/romstage.bin $(CONFIG_CBFS_PREFIX)/romstage $(CONFIG_XIP_ROM_SIZE) > $(obj)/location.txt || { echo "The romstage is larger than XIP size. Please expand the CONFIG_XIP_ROM_SIZE" ; exit 1; }
-	cat $(obj)/location.txt >> $(obj)/location.ld
-	printf ';\n' >> $(obj)/location.ld
-	$(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/ldscript.ld $(romstage-objs)
+	$(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/link1st.ld $(romstage-objs)
+	$(OBJCOPY) -O binary $(obj)/romstage.elf $@
+
+$(obj)/coreboot.romstage: $$(romstage-objs) $(obj)/romstage/link2nd.ld
+	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
+	$(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/link2nd.ld $(romstage-objs)
    $(NM) -n $(obj)/romstage.elf | sort > $(obj)/romstage.map
    $(OBJCOPY) --only-keep-debug $(obj)/romstage.elf $(obj)/romstage.debug
    $(OBJCOPY) --strip-debug $(obj)/romstage.elf
    $(OBJCOPY) --add-gnu-debuglink=$(obj)/romstage.debug $(obj)/romstage.elf
    $(OBJCOPY) -O binary $(obj)/romstage.elf $@

-$(obj)/romstage/ldscript.ld: $$(ldscripts) $(obj)/ldoptions
+$(obj)/romstage/link1st.ld: $$(ldscripts) $(obj)/ldoptions
    @printf "    GEN        $(subst $(obj)/,,$(@))\n"
    mkdir -p $(obj)/romstage
-	printf '$(foreach ldscript,ldoptions location.ld $(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' > $@
+	rm -f $@
+	printf "ROMSTAGE_BASE = 0x0;\n" > $@.tmp
+	printf '$(foreach ldscript,ldoptions $(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@.tmp
+	mv $@.tmp $@
+
+$(obj)/romstage/link2nd.ld: $(obj)/romstage/link1st.ld $(obj)/location.txt
+	@printf "    GEN        $(subst $(obj)/,,$(@))\n"
+	rm -f $@
+	sed -e 's/^/ROMSTAGE_BASE = /g' -e 's/$$/;/g' $(obj)/location.txt > $@.tmp
+	sed -e '/ROMSTAGE_BASE/d' $(obj)/romstage/link1st.ld >> $@.tmp
+	mv $@.tmp $@
+
+$(obj)/location.txt: $(obj)/coreboot.pre1 $(obj)/romstage.bin
+	rm -f $@
+	$(CBFSTOOL) $(obj)/coreboot.pre1 locate $(obj)/romstage.bin $(CONFIG_CBFS_PREFIX)/romstage $(CONFIG_XIP_ROM_SIZE) > $@.tmp \
+	 || { echo "The romstage is larger than XIP size. Please expand the CONFIG_XIP_ROM_SIZE" ; exit 1; }
+	sed -i -e 's/^/0x/g' $@.tmp
+	mv $@.tmp $@

$(obj)/romstage/crt0.S: $$(crt0s)
    @printf "    GEN        $(subst $(obj)/,,$(@))\n"