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#
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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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kconfig: switch to Kconfig
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>
10 years ago
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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
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fw_printenv-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_crosstools_strip = STRIP $^
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cmd_crosstools_strip = $(STRIP) $^; touch $@
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$(obj)/.strip: $(obj)/fw_printenv
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$(call cmd,crosstools_strip)
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always += .strip
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