Commit graph

5 commits

Author SHA1 Message Date
Bin Meng
2895c4b7d6 kconfig: Introduce HAVE_ARCH_IOMAP
Introduce a new Kconfig option for architecture codes to control
whether it provides io{read,write}{8,16,32} I/O accessor functions.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:27 -08:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00
Masahiro Yamada
6c06f8dc4a linux/io.h: import generic ioread* / iowrite* accessors from Linux
Some drivers in Linux (ex. drivers/mtd/nand/denali.c) use
ioread*/iowrite* accessors.  Import them to make drivers more
synced.  I copied code from include/asm-generic/io.h of Linux.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-09-12 18:02:23 -04:00
Masahiro Yamada
9a387128e3 linux/io.h: add generic ioremap()/iounmap() defines
For most of architectures in U-Boot, virtual address is straight
mapped to physical address.  So, it makes sense to have generic
defines of ioremap and friends in <linux/io.h>.

All of them are just empty and will disappear at compile time, but
they will be helpful to implement drivers which are counterparts of
Linux ones.

I notice MIPS already has its own implementation, so I added a
Kconfig symbol CONFIG_HAVE_ARCH_IOREMAP which MIPS (and maybe
Sandbox as well) can select.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2016-07-14 18:22:26 -04:00
Masahiro Yamada
af22ac660a include: introduce include/linux/io.h as a wrapper of asm/io.h
In the latest Linux coding style, <linux/io.h> should be included
rather than <asm/io.h>.  To follow this standard also in U-Boot,
add include/linux/io.h.  Currently, it just includes <asm/io.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-28 08:18:19 -04:00