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https://github.com/brain-hackers/u-boot-brain
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3eb90bad65
According to the PPC reference implementation the udelay() function is responsible for resetting the watchdog timer as frequently as needed. Most other architectures do not meet that requirement, so long-running operations might result in a watchdog reset. This patch adds a generic udelay() function which takes care of resetting the watchdog before calling an architecture-specific __udelay(). Signed-off-by: Ingo van Lil <inguin@gmx.de>
93 lines
3.0 KiB
Makefile
93 lines
3.0 KiB
Makefile
#
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# (C) Copyright 2007 Semihalf
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundatio; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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ifeq ($(ARCH),ppc)
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LOAD_ADDR = 0x40000
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endif
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ifeq ($(ARCH),arm)
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LOAD_ADDR = 0x1000000
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endif
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include $(TOPDIR)/config.mk
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# Resulting ELF and binary exectuables will be named demo and demo.bin
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OUTPUT-$(CONFIG_API) = $(obj)demo
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OUTPUT = $(OUTPUT-y)
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# Source files located in the examples/api directory
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SOBJ_FILES-$(CONFIG_API) += crt0.o
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COBJ_FILES-$(CONFIG_API) += demo.o
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COBJ_FILES-$(CONFIG_API) += glue.o
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COBJ_FILES-$(CONFIG_API) += libgenwrap.o
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# Source files which exist outside the examples/api directory
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/crc32.o
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/ctype.o
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/div64.o
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/string.o
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/time.o
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EXT_COBJ_FILES-$(CONFIG_API) += lib_generic/vsprintf.o
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ifeq ($(ARCH),ppc)
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EXT_SOBJ_FILES-$(CONFIG_API) += lib_ppc/ppcstring.o
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endif
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# Create a list of source files so their dependencies can be auto-generated
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SRCS += $(addprefix $(SRCTREE)/,$(EXT_COBJ_FILES-y:.o=.c))
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SRCS += $(addprefix $(SRCTREE)/,$(EXT_SOBJ_FILES-y:.o=.S))
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SRCS += $(addprefix $(SRCTREE)/examples/api/,$(COBJ_FILES-y:.o=.c))
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SRCS += $(addprefix $(SRCTREE)/examples/api/,$(SOBJ_FILES-y:.o=.S))
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# Create a list of object files to be compiled
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OBJS += $(addprefix $(obj),$(SOBJ_FILES-y))
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OBJS += $(addprefix $(obj),$(COBJ_FILES-y))
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OBJS += $(addprefix $(obj),$(notdir $(EXT_COBJ_FILES-y)))
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OBJS += $(addprefix $(obj),$(notdir $(EXT_SOBJ_FILES-y)))
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gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
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CPPFLAGS += -I..
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all: $(obj).depend $(OUTPUT)
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#########################################################################
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$(OUTPUT): $(OBJS)
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$(LD) -Ttext $(LOAD_ADDR) -o $@ $^ -L$(gcclibdir) -lgcc
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$(OBJCOPY) -O binary $@ $(OUTPUT).bin 2>/dev/null
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# Rule to build generic library C files
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$(obj)%.o: $(SRCTREE)/lib_generic/%.c
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$(CC) -g $(CFLAGS) -c -o $@ $<
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# Rule to build architecture-specific library assembly files
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$(obj)%.o: $(SRCTREE)/lib_$(ARCH)/%.S
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$(CC) -g $(CFLAGS) -c -o $@ $<
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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