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2020-01-22env: another attempt at fixing SPL build failuresRasmus Villemoes
I'm also seeing the build failure that commit 7d4776545b env: solve compilation error in SPL tried to fix, namely that the reference to env_flags_validate from env_htab cannot be satisfied when flags.o is not built in. However, that commit got reverted by d90fc9c3de Revert "env: solve compilation error in SPL" Necessary, but not sufficient conditions to see this are CONFIG_SPL=y (obviously) CONFIG_SPL_ENV_SUPPORT=n (so flags.o does not get compiled) CONFIG_SPL_LIBCOMMON_SUPPORT=y (so env/built-in.o is part of the SPL link) Now, these are satisfied for e.g. imx6q_logic_defconfig. But that builds just fine, and spl/u-boot-spl.map lists .data.env_htab among the discarded (garbage collected) sections. Yet, on our mpc8309-derived board, we do see the build failure, so perhaps the linker works a bit differently on ppc than on ARM, or there's yet some other configuration option needed to observe the break. This is another attempt at solving it, which also cleans up env/Makefile a bit: Introduce a def_bool y symbol CONFIG_ENV_SUPPORT which complements CONFIG_(SPL/TPL)_SUPPORT. Then use CONFIG_$(SPL_TPL_)ENV_SUPPORT to decide whether to include the five basic env/*.o files. For attr.o, flags.o and callback.o, this shouldn't change anything. Also, common.o and env.o still get unconditionally built for U-boot proper. But for TPL/SPL, those two are only included if CONFIG_(SPL/TPL)_SUPPORT is set. Having that symbol should also allow simplifying conditionals such as #if !defined(CONFIG_SPL_BUILD) || CONFIG_IS_ENABLED(ENV_SUPPORT) found in drivers/reset/reset-socfpga.c to just CONFIG_IS_ENABLED(ENV_SUPPORT). Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
2018-07-21env: Simplify Makefile using $(SPL_TPL_)York Sun
Add Kconfig options SPL_ENV_* and TPL_ENV_* and simplify Makefile. This allows SPL/TPL image has different environment setting from full feature U-Boot. Signed-off-by: York Sun <york.sun@nxp.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-16env: Drop CONFIG_ENV_IS_IN_DATAFLASHTuomas Tynkkynen
Last user of this option went away in commit: fdc7718999 ("board: usb_a9263: Update to support DT and DM") Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
2017-08-15env: Add a new implementation of environment accessSimon Glass
We plan to move to a environment access via drivers for each location where the environment can be stored. Add an implementation for this. So far it is not used, but will be pressed into service in a future patch. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-15Move environment files from common/ to env/Simon Glass
About a quarter of the files in common/ relate to the environment. It seems better to put these into their own subdirectory and remove the prefix. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>