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![Masahiro Yamada](/assets/img/avatar_default.png)
This commit enables Kconfig. Going forward, we use Kconfig for the board configuration. mkconfig will never be used. Nor will include/config.mk be generated. Kconfig must be adjusted for U-Boot because our situation is a little more complicated than Linux Kernel. We have to generate multiple boot images (Normal, SPL, TPL) from one source tree. Each image needs its own configuration input. Usage: Run "make <board>_defconfig" to do the board configuration. It will create the .config file and additionally spl/.config, tpl/.config if SPL, TPL is enabled, respectively. You can use "make config", "make menuconfig" etc. to create a new .config or modify the existing one. Use "make spl/config", "make spl/menuconfig" etc. for spl/.config and do likewise for tpl/.config file. The generic syntax of configuration targets for SPL, TPL is: <target_image>/<config_command> Here, <target_image> is either 'spl' or 'tpl' <config_command> is 'config', 'menuconfig', 'xconfig', etc. When the configuration is done, run "make". (Or "make <board>_defconfig all" will do the configuration and build in one time.) For futher information of how Kconfig works in U-Boot, please read the comment block of scripts/multiconfig.py. By the way, there is another item worth remarking here: coexistence of Kconfig and board herder files. Prior to Kconfig, we used C headers to define a set of configs. We expect a very long term to migrate from C headers to Kconfig. Two different infractructure must coexist in the interim. In our former configuration scheme, include/autoconf.mk was generated for use in makefiles. It is still generated under include/, spl/include/, tpl/include/ directory for the Normal, SPL, TPL image, respectively. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
35 lines
975 B
Makefile
35 lines
975 B
Makefile
#
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# (C) Copyright 2002-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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# fw_printenv is supposed to run on the target system, which means it should be
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# built with cross tools. Although it may look weird, we only replace "HOSTCC"
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# with "CC" here for the maximum code reuse of scripts/Makefile.host.
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HOSTCC = $(CC)
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# Compile for a hosted environment on the target
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HOST_EXTRACFLAGS = $(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
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-idirafter $(srctree)/tools/env \
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-DUSE_HOSTCC \
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-DTEXT_BASE=$(TEXT_BASE)
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ifeq ($(MTD_VERSION),old)
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HOST_EXTRACFLAGS += -DMTD_OLD
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endif
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always := fw_printenv
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hostprogs-y := fw_printenv_unstripped
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fw_printenv_unstripped-objs := fw_env.o fw_env_main.o \
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crc32.o ctype.o linux_string.o \
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env_attr.o env_flags.o aes.o
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quiet_cmd_strip = STRIP $@
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cmd_strip = $(STRIP) -o $@ $<
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$(obj)/fw_printenv: $(obj)/fw_printenv_unstripped FORCE
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$(call if_changed,strip)
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