[U-Boot] [RFC PATCH 04/17] kconfig: add defconfig files for all boards

[Stephen Warren <swarren@wwwdotorg.org>]

On 03/17/2014 02:52 AM, Masahiro Yamada wrote:
> In Kconfig, we use "*_defconfig" files for board configuration.
> 
> In Linux Kernel, they are located under arch/${ARCH}/configs/ directory.
> It works in Linux Kernel because ARCH is always given from the
> command line for cross compile.
> 
> But in U-Boot, ARCH is not given from the command line.
> Which means we cannot know ARCH before the board configuration.
> That is why "*_defconfig" files over all architectures should be
> moved into one directory ./configs/.
> (The problem is configs/ directory contains more than 1200 files!)
> 
> Besides, we must configure boards for SPL and TPL too
> if they are supported.
> For those boards, defconfig files with the same name are placed
> in spl/configs/, tpl/configs/ directories.

> diff --git a/configs/beaver_defconfig b/configs/beaver_defconfig
> new file mode 100644
> index 0000000..fbf00f3
> --- /dev/null
> +++ b/configs/beaver_defconfig
> @@ -0,0 +1,10 @@
> +CONFIG_SPL=y
> +CONFIG_ARM=y
> +CONFIG_SYS_CPU="armv7"
> +CONFIG_SOC_DIR=y
> +CONFIG_SYS_SOC="tegra30"
> +CONFIG_SYS_BOARD="beaver"
> +CONFIG_VENDOR_DIR=y
> +CONFIG_SYS_VENDOR="nvidia"
> +CONFIG_SYS_CONFIG_NAME="beaver"
> +CONFIG_BOARD_MAINTAINER="Tom Warren <twarren@nvidia.com>:Stephen Warren <swarren@nvidia.com>"

This is odd; defconfig in the Linux kernel is for defining values for
user-editable configuration options. However, at least
CONFIG_BOARD_MAINTAINERS is a property of the board port, not something
the a user should be editing. Other values in this file feel very odd
too. For example, I would expect selecting SYS_SOC=tegra30 it
automatically select SYS_VENDOR, SYS_CPU, ARM, SPL, ...