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u-boot/board/altera/nios2-generic/Makefile

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nios2: add nios2-generic board This is a generic approach to port u-boot for nios2 boards. You may find the usage of this approach on the nioswiki, http://nioswiki.com/DasUBoot A fpga parameter file, which contains base address information and drivers declaration, is generated from Altera's hardware system description sopc file using tools. The example fpga parameter file is compatible with EP1C20, EP1S10 and EP1S40 boards. So these boards can be removed after this commit. Though epcs controller is removed to cut the dependency of altera_spi driver. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-04-21 00:40:59 +00:00
#
# (C) Copyright 2001-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
# (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
#
# See file CREDITS for list of people who contributed to this
# project.
#
# 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., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
include $(TOPDIR)/config.mk
ifneq ($(OBJTREE),$(SRCTREE))
$(shell mkdir -p $(obj)../common)
endif
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-05 14:48:07 +00:00
LIB = $(obj)lib$(BOARD).o
nios2: add nios2-generic board This is a generic approach to port u-boot for nios2 boards. You may find the usage of this approach on the nioswiki, http://nioswiki.com/DasUBoot A fpga parameter file, which contains base address information and drivers declaration, is generated from Altera's hardware system description sopc file using tools. The example fpga parameter file is compatible with EP1C20, EP1S10 and EP1S40 boards. So these boards can be removed after this commit. Though epcs controller is removed to cut the dependency of altera_spi driver. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-04-21 00:40:59 +00:00
COBJS-y := $(BOARD).o
COBJS-$(CONFIG_CMD_IDE) += ../common/cfide.o
COBJS-$(CONFIG_EPLED) += ../common/epled.o
nios2: add gpio support to nios2-generic board This patch adds gpio support of Altera PIO component to the nios2-generic board. Though it drives only gpio_led at the moment, it supports bidirectional port to control bit-banging I2C, NAND flash busy status or button switches, etc. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Tested-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-04-30 03:34:15 +00:00
COBJS-$(CONFIG_GPIO) += gpio.o
nios2: add nios2-generic board This is a generic approach to port u-boot for nios2 boards. You may find the usage of this approach on the nioswiki, http://nioswiki.com/DasUBoot A fpga parameter file, which contains base address information and drivers declaration, is generated from Altera's hardware system description sopc file using tools. The example fpga parameter file is compatible with EP1C20, EP1S10 and EP1S40 boards. So these boards can be removed after this commit. Though epcs controller is removed to cut the dependency of altera_spi driver. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-04-21 00:40:59 +00:00
COBJS-$(CONFIG_SEVENSEG) += ../common/sevenseg.o
SOBJS-y := text_base.o
SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS-y))
SOBJS := $(addprefix $(obj),$(SOBJS-y))
$(LIB): $(obj).depend $(OBJS) $(SOBJS)
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-05 14:48:07 +00:00
$(call cmd_link_o_target, $(OBJS) $(SOBJS))
nios2: add nios2-generic board This is a generic approach to port u-boot for nios2 boards. You may find the usage of this approach on the nioswiki, http://nioswiki.com/DasUBoot A fpga parameter file, which contains base address information and drivers declaration, is generated from Altera's hardware system description sopc file using tools. The example fpga parameter file is compatible with EP1C20, EP1S10 and EP1S40 boards. So these boards can be removed after this commit. Though epcs controller is removed to cut the dependency of altera_spi driver. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-04-21 00:40:59 +00:00
clean:
rm -f $(SOBJS) $(OBJS)
distclean: clean
rm -f $(LIB) core *.bak $(obj).depend
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
#########################################################################
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