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2019-07-10arm64: add an option to switch visibility of CONFIG_SYS_INIT_SP_BSS_OFFSETMasahiro Yamada
By default, CONFIG_SYS_INIT_SP_BSS_OFFSET was made invisible by not giving a prompt to it. The only way to define it is to hard-code an extra entry in SoC/board Kconfig, like arch/arm/mach-tegra/tegra{186,210}/Kconfig. Add a prompt to it in order to allow defconfig files to specify the value of CONFIG_SYS_INIT_SP_BSS_OFFSET. With this, CONFIG_SYS_INIT_SP_BSS_OFFSET would become always visible. So, we need a new bool option to turn it off by default. I move the 'default 524288' to the common place. This value is not too big, but is big enough to avoid the overwrap of DT in most platforms. If 512KB is not a suitable choice for your platform, you can change it from your defconfig or menuconfig etc. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Stephen Warren <swarren@nvidia.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>
2018-01-12ARMv8: add optional Linux kernel image headerStephen Warren
Allow placing a Linux kernel image header at the start of the U-Boot binary. This is useful since the image header reports the amount of memory (BSS and similar) that U-Boot needs to use, but that isn't part of the binary size. This can be used by the code that loads U-Boot into memory to determine where to load U-Boot, based on other users of memory. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>