mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
48fe3ab5ef
Calling non-PIC code from PIC code needs an ABI wrapper and we don't provide one. Our trick with function pointers is exceedingly fragile: - it depends on gcc not being clever enough - it forces us to compile all initram source files in one go - parallelizing initram compilation breaks the code - compiling one initram source file at a time breaks the code - enabling higher optimizations breaks the code - enabling -fwhole-program breaks the code - declaring the function pointers const breaks the code - it's an undocumented side effect of gcc which will go away - we need excessively ugly shared function wrappers - the shared function wrappers had more than their fair share of bugs - almost nobody understands the wrappers completely - Segher warns against them: "So why do you think this should work? You're telling it to link PIC to non-PIC. Did you read the manual? It's just not allowed. It cannot ever work." Kill the SHARED wrappers and use a real ABI wrapper. The wrapper code is autogenerated on demand. Any function compiled into stage0 is now shared by default, yet the size and code generation of stage0/1/2 code are unchanged. Initram code size does decrease quite a bit and the difficulty of creating shared functions is now zero. The patch includes extensive documentation about the inner workings of the new wrappers and the reasons why they look like this. Build and boot tested on qemu. Build tested on all targets. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Ron says: Wow. we've need this fix for a long time. Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@775 f3766cd6-281f-0410-b1cd-43a5c92072e9
286 lines
10 KiB
Makefile
286 lines
10 KiB
Makefile
##
|
|
## This file is part of the coreboot project.
|
|
##
|
|
## Copyright (C) 2006-2007 coresystems GmbH
|
|
## (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
|
|
##
|
|
## 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; either version 2 of the License, or
|
|
## (at your option) any later version.
|
|
##
|
|
## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
##
|
|
|
|
ifeq ($(CONFIG_ARCH_X86),y)
|
|
|
|
INITCFLAGS := $(CFLAGS) -I$(src)/include/arch/x86 -I$(src)/include \
|
|
-I$(obj) -fno-builtin
|
|
|
|
SILENT := >/dev/null 2>&1
|
|
|
|
#
|
|
# Build the ROM Image / LAR archive
|
|
#
|
|
# coreboot v3 is completely modular. One module, the bootblock (stage0),
|
|
# is mandatory. All modules are packed together in a LAR archive.
|
|
# The LAR archive may contain any number of stages, payloads and option ROMs.
|
|
#
|
|
|
|
ROM_SIZE := $(shell expr $(CONFIG_COREBOOT_ROMSIZE_KB) \* 1024)
|
|
|
|
LARFILES_NOCOMPRESS := coreboot.initram:normal/initram option_table:normal/option_table
|
|
LARFILES_COMPRESSIBLE := coreboot.stage2:normal/stage2
|
|
|
|
DECOMPRESSORS :=
|
|
ifeq ($(CONFIG_COMPRESSION_LZMA),y)
|
|
DECOMPRESSORS += lzma.o
|
|
endif
|
|
ifeq ($(CONFIG_COMPRESSION_NRV2B),y)
|
|
DECOMPRESSORS += nrv2b.o
|
|
endif
|
|
|
|
COMPRESSFLAG :=
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_LZMA),y)
|
|
COMPRESSFLAG := -C lzma
|
|
endif
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_NRV2B),y)
|
|
COMPRESSFLAG := -C nrv2b
|
|
endif
|
|
|
|
$(obj)/coreboot.rom $(obj)/coreboot.map: $(obj)/coreboot.bootblock $(obj)/util/lar/lar lzma nrv2b $(obj)/coreboot.initram $(obj)/coreboot.stage2 $(obj)/option_table
|
|
$(Q)printf " LAR $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)rm -f $(obj)/coreboot.rom
|
|
$(Q)cd $(obj) && \
|
|
./util/lar/lar -e -c coreboot.rom \
|
|
-s $(ROM_SIZE) -b coreboot.bootblock \
|
|
$(LARFILES_NOCOMPRESS)
|
|
$(Q)cd $(obj) && \
|
|
./util/lar/lar -e $(COMPRESSFLAG) -a coreboot.rom \
|
|
$(LARFILES_COMPRESSIBLE)
|
|
ifeq ($(CONFIG_PAYLOAD_NONE),y)
|
|
$(Q)printf " PAYLOAD none (as specified by user)\n"
|
|
else
|
|
$(Q)if [ -r $(CONFIG_PAYLOAD_FILE) ]; then \
|
|
printf " PAYLOAD $(CONFIG_PAYLOAD_FILE) $(COMPRESSFLAG)\n"; \
|
|
else \
|
|
printf "Error: payload file '$(CONFIG_PAYLOAD_FILE)' not found.\n"; \
|
|
exit 1; \
|
|
fi
|
|
$(Q)$(obj)/util/lar/lar $(PARSEELF) $(COMPRESSFLAG) -a \
|
|
$(obj)/coreboot.rom $(CONFIG_PAYLOAD_FILE):normal/payload;
|
|
endif
|
|
ifeq ($(CONFIG_ZERO_AFTER_PAYLOAD),y)
|
|
$(Q)printf " ZEROING lar -z ./coreboot.rom\n"
|
|
$(Q)cd $(obj) && ./util/lar/lar -z ./coreboot.rom
|
|
endif
|
|
$(Q)# QEMU wants bios.bin:
|
|
$(Q)# Run "qemu -L build/ -serial stdio -hda /dev/zero".
|
|
$(Q)printf " CP $(subst $(shell pwd)/,,$(obj)/bios.bin)\n"
|
|
$(Q)cp $@ $(obj)/bios.bin
|
|
$(Q)echo "Coreboot ROM Image:" > $(obj)/coreboot.map
|
|
$(Q)$(obj)/util/lar/lar -l $(obj)/coreboot.rom >> $(obj)/coreboot.map
|
|
$(Q)(echo; echo "Stage 0/1 Map:") >> $(obj)/coreboot.map
|
|
$(Q)cat $(obj)/stage0.init.map >> $(obj)/coreboot.map
|
|
$(Q)(echo; echo "Stage Initram Map:") >> $(obj)/coreboot.map
|
|
$(Q)cat $(obj)/coreboot.initram.map >> $(obj)/coreboot.map
|
|
$(Q)(echo; echo "Stage 2 Map:") >> $(obj)/coreboot.map
|
|
$(Q)cat $(obj)/coreboot.stage2.map >> $(obj)/coreboot.map
|
|
|
|
|
|
$(obj)/coreboot.bootblock: $(obj)/coreboot.vpd $(obj)/stage0.init
|
|
$(Q)printf " BUILD $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)cat $^ > $@
|
|
|
|
#
|
|
# Coreboot stage0. This is the coreboot "boot block code".
|
|
# It enables Cache-as-RAM and parses the LAR archive for an
|
|
# initram module and the various stages and payload files.
|
|
#
|
|
|
|
|
|
STAGE0_LIB_OBJ = uart8250.o mem.o lar.o delay.o vtxprintf.o \
|
|
vsprintf.o console.o string.o $(DECOMPRESSORS)
|
|
STAGE0_ARCH_X86_OBJ = stage1.o serial.o speaker.o \
|
|
udelay_io.o mc146818rtc.o post_code.o \
|
|
pci_ops_conf1.o resourcemap.o
|
|
|
|
ifeq ($(CONFIG_PAYLOAD_ELF_LOADER),y)
|
|
STAGE0_LIB_OBJ += elfboot.o
|
|
STAGE0_ARCH_X86_OBJ += archelfboot.o
|
|
endif
|
|
|
|
ifeq ($(CONFIG_CPU_I586),y)
|
|
STAGE0_CAR_OBJ = stage0_i586.o
|
|
else
|
|
ifeq ($(CONFIG_CPU_AMD_GEODELX),y)
|
|
STAGE0_CAR_OBJ = geodelx/stage0.o
|
|
STAGE0_ARCH_X86_OBJ += geodelx/stage1.o
|
|
STAGE0_ARCH_X86_OBJ += ../../northbridge/amd/geodelx/geodelxinit.o
|
|
else
|
|
ifeq ($(CONFIG_CPU_AMD_K8),y)
|
|
STAGE0_CAR_OBJ = amd/stage0.o
|
|
STAGE0_ARCH_X86_OBJ += amd/k8/stage1.o
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(CONFIG_PAYLOAD_NO_PREPARSE_ELF), y)
|
|
PARSEELF =
|
|
else
|
|
PARSEELF = -e
|
|
endif
|
|
|
|
STAGE0_OBJ := $(patsubst %,$(obj)/lib/%,$(STAGE0_LIB_OBJ)) \
|
|
$(patsubst %,$(obj)/arch/x86/%,$(STAGE0_ARCH_X86_OBJ)) \
|
|
$(patsubst %,$(obj)/arch/x86/%,$(STAGE0_CAR_OBJ)) \
|
|
$(STAGE0_MAINBOARD_OBJ) $(STAGE0_CHIPSET_OBJ)
|
|
|
|
$(obj)/stage0.o $(obj)/stage0.init $(obj)/stage0-prefixed.o: $(STAGE0_OBJ)
|
|
$(Q)# We need to be careful. If stage0.o gets bigger than
|
|
$(Q)# 0x4000 - 0x100, we will end up with a 4 gig file.
|
|
$(Q)# I wonder if that behavior is on purpose.
|
|
|
|
$(Q)# Note: we invoke gcc (instead of ld directly) here, as we hit
|
|
$(Q)# strange problems in the past. It seems that only gcc knows how
|
|
$(Q)# to properly invoke ld.
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(CC) -nostdlib -static -T $(src)/arch/x86/ldscript.ld \
|
|
$(STAGE0_OBJ) -o $(obj)/stage0.o
|
|
|
|
$(Q)printf " OBJCOPY $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(OBJCOPY) -O binary $(obj)/stage0.o $(obj)/stage0.init
|
|
|
|
$(Q)# Do another OBJCOPY to get a copy with renamed symbols
|
|
$(Q)# for XIP code.
|
|
$(Q)printf " OBJCOPY $(subst $(shell pwd)/,,$(@)) (prefixing stage0)\n"
|
|
$(Q)$(OBJCOPY) --prefix-symbols=stage0_ $(obj)/stage0.o $(obj)/stage0-prefixed.o
|
|
|
|
$(Q)printf " TEST $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)test `wc -c < $(obj)/stage0.init` -gt 20224 && \
|
|
printf "Error. Bootblock got too big.\n" || true
|
|
$(Q)printf " NM $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(NM) $(obj)/stage0.o | sort -u > $(obj)/stage0.init.map
|
|
|
|
|
|
|
|
#
|
|
# This is the rest of coreboot (v2: coreboot_ram.rom).
|
|
# Is this maybe platform independent, except for the "drivers"?
|
|
# Where should it be built, maybe in device/?
|
|
#
|
|
# TODO: This should be compressed with the default compressor.
|
|
#
|
|
|
|
STAGE2_LIB_SRC = stage2.c clog2.c mem.c tables.c delay.c \
|
|
compute_ip_checksum.c string.c
|
|
|
|
STAGE2_ARCH_X86_SRC = archtables.c coreboot_table.c udelay_io.c
|
|
STAGE2_ARCH_X86_SRC += pci_ops_auto.c
|
|
STAGE2_ARCH_X86_SRC += keyboard.c i8259.c isa-dma.c
|
|
|
|
ifeq ($(CONFIG_PIRQ_TABLE),y)
|
|
STAGE2_ARCH_X86_SRC += pirq_routing.c
|
|
endif
|
|
|
|
STAGE2_DYNAMIC_OBJ = statictree.o
|
|
|
|
STAGE2_SRC := $(patsubst %,$(src)/lib/%,$(STAGE2_LIB_SRC)) \
|
|
$(patsubst %,$(src)/arch/x86/%,$(STAGE2_ARCH_X86_SRC)) \
|
|
$(patsubst %,$(src)/device/%,$(STAGE2_DEVICE_SRC)) \
|
|
$(patsubst %,$(src)/mainboard/$(MAINBOARDDIR)/%,$(STAGE2_MAINBOARD_SRC))
|
|
|
|
STAGE2_SRC += $(STAGE2_CHIPSET_SRC)
|
|
|
|
STAGE2_OBJ := $(patsubst $(src)/%.c,$(obj)/%.o,$(STAGE2_SRC))
|
|
|
|
# This one is special because the static tree object ends up in the mainboard
|
|
# dir of the object tree.
|
|
STAGE2_OBJ += $(patsubst %,$(obj)/mainboard/$(MAINBOARDDIR)/%,$(STAGE2_DYNAMIC_OBJ))
|
|
|
|
ifeq ($(CONFIG_PCI_OPTION_ROM_RUN),y)
|
|
ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_X86EMU),y)
|
|
# x86emu wants libgcc
|
|
ifneq ($(strip $(CC)),)
|
|
LIBGCC_FILE_NAME := $(shell $(CC) -print-libgcc-file-name)
|
|
endif
|
|
endif
|
|
STAGE2_OBJ += $(obj)/util/x86emu/libx86emu.a $(LIBGCC_FILE_NAME)
|
|
endif
|
|
|
|
# To reduce code duplication, always make sure STAGE2_OBJ does not contain
|
|
# any object from STAGE0_OBJ.
|
|
|
|
STAGE2_OBJ_NEEDED = $(filter-out $(STAGE0_OBJ), $(STAGE2_OBJ))
|
|
|
|
$(obj)/coreboot.stage2 $(obj)/coreboot.stage2.map: $(obj)/stage0.o $(STAGE2_OBJ_NEEDED) $(STAGE2_SRC)
|
|
$(Q)# leave a .o with full symbols in it for debugging.
|
|
$(Q)printf " LD $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(LD) -R $(obj)/stage0.o -Ttext 0x2000 --entry=stage2 \
|
|
-o $(obj)/coreboot.stage2 $(STAGE2_OBJ_NEEDED)
|
|
$(Q)$(NM) $(obj)/coreboot.stage2 | sort -u > $(obj)/coreboot.stage2.map
|
|
|
|
#
|
|
# Build rules.
|
|
#
|
|
|
|
$(obj)/arch/x86/%.o: $(src)/arch/x86/%.c
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(CC) $(INITCFLAGS) -c $< -o $@
|
|
|
|
# Building asm stub.
|
|
$(obj)/arch/x86/stage0%.o: $(src)/arch/x86/stage0%.S
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(CC) -E $(COREBOOTINCLUDE) $< \
|
|
-o $(obj)/arch/x86/stage0_asm.s -DBOOTBLK=0x1f00 \
|
|
-DRESRVED=0xf0 -DDATE=\"`date +%Y/%m/%d`\"
|
|
$(Q)printf " AS $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(AS) $(obj)/arch/x86/stage0_asm.s -o $@
|
|
|
|
$(obj)/arch/x86/geodelx/stage0.o: $(src)/arch/x86/geodelx/stage0.S
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(CC) -E $(COREBOOTINCLUDE) $< \
|
|
-o $(obj)/arch/x86/stage0_asm.s -DBOOTBLK=0x1f00 \
|
|
-DRESRVED=0xf0 -DDATE=\"`date +%Y/%m/%d`\"
|
|
$(Q)printf " AS $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(AS) $(obj)/arch/x86/stage0_asm.s -o $@
|
|
|
|
|
|
# NOTE HACK. Stefan will fix this :-)
|
|
$(obj)/arch/x86/amd/stage0.o: $(src)/arch/x86/amd/stage0.S
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(CC) -E $(COREBOOTINCLUDE) $< \
|
|
-I $(src)/include/arch/x86/amd/k8 \
|
|
-o $(obj)/arch/x86/stage0_asm.s -DBOOTBLK=0x1f00 \
|
|
-DRESRVED=0xf0 -DDATE=\"`date +%Y/%m/%d`\"
|
|
$(Q)printf " AS $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(AS) $(obj)/arch/x86/stage0_asm.s -o $@
|
|
|
|
$(obj)/coreboot.initram $(obj)/coreboot.initram.map: $(obj)/stage0.init $(obj)/stage0-prefixed.o $(INITRAM_SRC)
|
|
$(Q)printf " CC $(subst $(shell pwd)/,,$(@)) (XIP)\n"
|
|
$(Q)$(CC) $(INITCFLAGS) -D_SHARED -fPIE -c -combine $(INITRAM_SRC) -o $(obj)/coreboot.initram_partiallylinked.o
|
|
$(Q)printf " WRAP $(subst $(shell pwd)/,,$(@)) (PIC->non-PIC)\n"
|
|
$(Q)$(NM) --undefined-only $(obj)/coreboot.initram_partiallylinked.o |\
|
|
grep -v _GLOBAL_OFFSET_TABLE_ | grep " U " | sed "s/^ *U //" |\
|
|
$(src)/util/picwrapper/picwrapper > $(obj)/initram_picwrapper.s
|
|
$(Q)printf " AS initram_picwrapper.s\n"
|
|
$(Q)$(AS) $(obj)/initram_picwrapper.s -o $(obj)/initram_picwrapper.o
|
|
$(Q)# initram links against stage0
|
|
$(Q)printf " LD $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(LD) -Ttext 0 --entry main -N -R $(obj)/stage0-prefixed.o \
|
|
$(obj)/coreboot.initram_partiallylinked.o \
|
|
$(obj)/initram_picwrapper.o -o $(obj)/coreboot.initram
|
|
$(Q)printf " NM $(subst $(shell pwd)/,,$(@))\n"
|
|
$(Q)$(NM) $(obj)/coreboot.initram | sort -u > $(obj)/coreboot.initram.map
|
|
|
|
endif
|