diff options
| -rw-r--r-- | src/arch/x86/Makefile.inc | 26 | ||||
| -rw-r--r-- | src/arch/x86/romstage.S | 37 |
2 files changed, 50 insertions, 13 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index 00d8d27dc8..fe974efc85 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -113,17 +113,23 @@ endif # CONFIG_ARCH_BOOTBLOCK_X86_32 / CONFIG_ARCH_BOOTBLOCK_X86_64 ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y) -crt0s = $(src)/arch/x86/prologue.inc romstage-srcs += $(src)/arch/x86/romstage.ld -crt0s += $(src)/cpu/x86/32bit/entry32.inc romstage-srcs += $(src)/cpu/x86/32bit/entry32.ld -crt0s += $(src)/cpu/x86/fpu_enable.inc -ifeq ($(CONFIG_SSE),y) -crt0s += $(src)/cpu/x86/sse_enable.inc -endif +# Chipset specific assembly stubs in the romstage program flow. Certain +# boards have more than one assembly stub so collect those and put them +# into a single generated file. +crt0s = $(cpu_incs-y) + +$(objgenerated)/romstage.inc: $$(crt0s) + @printf " GEN $(subst $(obj)/,,$(@))\n" + printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@ -crt0s += $(cpu_incs-y) +# Add the assembly file that pulls in the rest of the dependencies in +# the right order. Make sure the auto generated romstage.inc is a proper +# dependency. +romstage-y += romstage.S +$(obj)/arch/x86/romstage.romstage.o: $(objgenerated)/romstage.inc ifneq ($(CONFIG_ROMCC),y) @@ -165,8 +171,6 @@ $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/ endif -romstage-srcs += $(objgenerated)/crt0.S - romstage-libs ?= ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y) @@ -209,10 +213,6 @@ $(objcbfs)/base_xip.txt: $(obj)/coreboot.pre1 $(objcbfs)/romstage_null.bin || { echo "The romstage is larger than XIP size. Please expand the CONFIG_XIP_ROM_SIZE" ; exit 1; } mv $@.tmp $@ -$(objgenerated)/crt0.S: $$(crt0s) - @printf " GEN $(subst $(obj)/,,$(@))\n" - printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@ - # Compiling crt0 with -g seems to trigger https://sourceware.org/bugzilla/show_bug.cgi?id=6428 romstage-S-ccopts += -I. -g0 diff --git a/src/arch/x86/romstage.S b/src/arch/x86/romstage.S new file mode 100644 index 0000000000..b19b954b95 --- /dev/null +++ b/src/arch/x86/romstage.S @@ -0,0 +1,37 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc. + * + * This program 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; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +/* This file assembles the start of the romstage program by the order of the + * includes. Thus, it's extremely important that one pays very careful + * attention to the order of the includes. */ + +#include <arch/x86/prologue.inc> +#include <cpu/x86/32bit/entry32.inc> +#include <cpu/x86/fpu_enable.inc> +#if IS_ENABLED(CONFIG_SSE) +#include <cpu/x86/sse_enable.inc> +#endif + +/* + * The romstage.inc is generated based on the requirements of the mainboard. + * For example, for ROMCC boards the MAINBOARDDIR/romstage.c would be + * processed by ROMCC and added. In non-ROMCC boards the chipsets' + * cache-as-ram setup files would be here. + */ +#include <generated/romstage.inc> |