Split crt0.S.lb into prologue and epilogue

(the latter only for romcc), rename crt0_includes.h
to crt0.S, and compile that directly.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5383 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

Makefile

@@ -320,7 +320,7 @@ clean-for-update: doxygen-clean
 	rm -f $(DEPENDENCIES)
 	rm -f $(obj)/coreboot_ram* $(obj)/coreboot.romstage $(obj)/coreboot.pre* $(obj)/coreboot.bootblock $(obj)/coreboot.a
 	rm -rf $(obj)/bootblock* $(obj)/romstage* $(obj)/location.*
-	rm -f $(obj)/option_table.* $(obj)/crt0_includes.h $(obj)/ldscript
+	rm -f $(obj)/option_table.* $(obj)/crt0.S $(obj)/ldscript
 	rm -f $(obj)/mainboard/$(MAINBOARDDIR)/static.c $(obj)/mainboard/$(MAINBOARDDIR)/config.py $(obj)/mainboard/$(MAINBOARDDIR)/static.dot
 	rm -f $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s $(obj)/mainboard/$(MAINBOARDDIR)/crt0.disasm
 	rm -f $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc

src/arch/i386/Makefile.bigbootblock.inc

@@ -16,7 +16,7 @@ $(obj)/ldscript.ld: $$(ldscripts) $(obj)/ldoptions
 	printf 'INCLUDE "ldoptions"\n' > $@
 	printf '$(foreach ldscript,$(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@
 
-$(obj)/crt0_includes.h: $$(crt0s)
+$(obj)/crt0.S: $$(crt0s)
 	@printf "    GEN        $(subst $(obj)/,,$(@))\n"
 	printf '$(foreach crt0,config.h $(crt0s),#include "$(crt0:$(obj)/%=%)"\n)' > $@
 
@@ -24,7 +24,7 @@ $(obj)/mainboard/$(MAINBOARDDIR)/crt0.initobj.o: $(obj)/mainboard/$(MAINBOARDDIR
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(CC) -MMD -I$(obj) -Wa,-acdlns -c -o $@ $<  > $(dir $@)/crt0.disasm
 
-$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(src)/arch/i386/init/crt0.S.lb $(obj)/crt0_includes.h
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(obj)/crt0.S
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(CC) -MMD -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
 

src/arch/i386/Makefile.bootblock.inc

@@ -96,7 +96,7 @@ $(obj)/romstage/ldscript.ld: $$(ldscripts) $(obj)/ldoptions
 	mkdir -p $(obj)/romstage
 	printf '$(foreach ldscript,ldoptions location.ld $(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' > $@
 
-$(obj)/romstage/crt0_includes.h: $$(crt0s)
+$(obj)/romstage/crt0.S: $$(crt0s)
 	@printf "    GEN        $(subst $(obj)/,,$(@))\n"
 	mkdir -p $(obj)/romstage
 	printf '$(foreach crt0,config.h $(crt0s),#include "$(crt0:$(obj)/%=%)"\n)' > $@
@@ -105,7 +105,7 @@ $(obj)/mainboard/$(MAINBOARDDIR)/crt0.initobj.o: $(obj)/mainboard/$(MAINBOARDDIR
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(CC) -I$(obj) -Wa,-acdlns -c -o $@ $<  > $(dir $@)/crt0.disasm
 
-$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(src)/arch/i386/init/crt0.S.lb $(obj)/romstage/crt0_includes.h
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(obj)/romstage/crt0.S
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -I$(obj)/romstage -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
 

src/arch/i386/Makefile.inc

@@ -100,7 +100,7 @@ endif
 #######################################################################
 # done
 
-crt0s =
+crt0s = $(src)/arch/i386/init/crt0_prologue.inc
 ldscripts =
 ldscripts += $(src)/arch/i386/init/ldscript_fallback_cbfs.lb
 ifeq ($(CONFIG_BIG_BOOTBLOCK),y)
@@ -196,6 +196,10 @@ crt0s += $(chipset_bootblock_inc)
 ldscripts += $(chipset_bootblock_lds)
 endif
 
+ifeq ($(CONFIG_ROMCC),y)
+crt0s += $(src)/arch/i386/init/crt0_romcc_epilogue.inc
+endif
+
 OPTION_TABLE_H:=
 ifeq ($(CONFIG_HAVE_OPTION_TABLE),y)
 OPTION_TABLE_H:=$(obj)/option_table.h

src/arch/i386/init/crt0_prologue.inc

@@ -0,0 +1,28 @@
+/* 
+ * Copyright 2002 Eric Biederman
+ *
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+
+#include <arch/asm.h>
+#include <arch/intel.h>
+#include <console/loglevel.h>	
+
+#ifndef ASM_CONSOLE_LOGLEVEL
+#define ASM_CONSOLE_LOGLEVEL CONFIG_MAXIMUM_CONSOLE_LOGLEVEL
+#endif
+
+/*
+ * This is the entry code the code in .reset section
+ * jumps to this address.
+ *
+ */
+.section ".rom.data", "a", @progbits
+.section ".rom.text", "ax", @progbits
+
+	post_code(0x01)             /* delay for chipsets */
+

src/arch/i386/init/crt0_romcc_epilogue.inc

@@ -21,27 +21,6 @@
  */
 
 
-#include <arch/asm.h>
-#include <arch/intel.h>
-#include <console/loglevel.h>	
-
-#ifndef ASM_CONSOLE_LOGLEVEL
-#define ASM_CONSOLE_LOGLEVEL CONFIG_MAXIMUM_CONSOLE_LOGLEVEL
-#endif
-
-/*
- * This is the entry code the code in .reset section
- * jumps to this address.
- *
- */
-.section ".rom.data", "a", @progbits
-.section ".rom.text", "ax", @progbits
-
-	post_code(0x01)             /* delay for chipsets */
-
-#include "crt0_includes.h"
-
-#if CONFIG_USE_DCACHE_RAM == 0
 #ifndef CONSOLE_DEBUG_TX_STRING
 	/* uses:	 esp, ebx, ax, dx */
 # define __CRT_CONSOLE_TX_STRING(string) \
@@ -143,5 +122,3 @@ str_pre_main:        .string "Jumping to coreboot.\r\n"
 
 str_coreboot_ram_name:	.ascii CONFIG_CBFS_PREFIX
 			.string "/coreboot_ram"
-
-#endif /* CONFIG_USE_DCACHE_RAM */