Commit graph

14 commits

Author SHA1 Message Date
Philipp Tomsich
399f3afa37 doc: move documentation for /config node into a separate file
This moves the description of the /config node from README.fdt-control
into a separate file doc/device-tree-bindings/config.txt.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-03-20 18:04:35 -04:00
Simon Glass
89b199c3d4 Remove/update old generic-board documentation and warning
Remove the warning from the Makefile, since boards that do not use generic
board will no longer build. Also update documentation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-05-27 15:39:50 -04:00
Thomas Chou
545dfd1014 env: export fdt_blob to the environment variable
Export fdt_blob to the environment variable. So that we may
use it to boot Linux.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Simon Glass <sjg@chromium.org>
2015-10-23 09:42:28 -06:00
Simon Glass
5692ccfaca x86: video: Allow keyboard presence to be controlled by device tree
At present a VGA console assumes a keyboard unless a CONFIG option is set.
This difference can be dealt with by a device tree option, allowing boards
that are otherwise the same to use the same configuration.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-16 19:27:40 -06:00
Simon Glass
d18926af30 fdt: Rename the DEV_TREE_BIN Makefile flag to to EXT_DTB
This seems like a better name. This is a patch-up to the earlier commit
63b4b5b, and also removes a redundant Makefile change.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-19 11:18:56 -04:00
Simon Glass
63b4b5bae5 fdt: Add DEV_TREE_BIN option to specify a device tree binary file
In some cases, an externally-built device tree binary is required to be
attached to U-Boot. An example is when using image signing, since in that
case the .dtb file must include the public keys.

Add a DEV_TREE_BIN option to the Makefile, and update the documentation.

Usage is something like:

	make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-11 16:25:46 -04:00
Jon Loeliger
5f65826b1b FDT: Fix DTC repository references
The Device Tree Compiler (DTC) used to have its master
repository located on jdl.com.  While it is still there,
its official, new, shiny location is on kernel.org here:

    git://git.kernel.org/pub/scm/utils/dtc/dtc.git

Update a few references to point there instead.

Signed-off-by: Jon Loeliger <jdl@jdl.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-06-05 14:44:56 -04:00
Stephen Warren
065202803d config: don't define CONFIG_ARCH_DEVICE_TREE
Now that nothing uses CONFIG_ARCH_DEVICE_TREE, stop defining it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
2013-08-02 18:30:11 -04:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Simon Glass
134a65124d Add minor updates to README.fdt-control
A few things have changed since this doc was written, so update it to
match the current state of things.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-05-14 15:37:24 -04:00
Simon Glass
f828bf25fe sandbox: Add CONFIG_OF_HOSTFILE to read FDT from host file
With sandbox it is tricky to add an FDT to the image at build time (or
later) since we build an ELF file, not a plain binary, and the address
space of the whole U-Boot is not accessible in the emulated memory map
of sandbox.

Sandbox can read files directly from the host, though, so add an option
to read an FDT from a host file on start-up.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-05-01 11:17:21 -04:00
Jagannadha Sutradharudu Teki
74de8c9a16 dts/Makefile: Build the user specified dts
This patch provides a support to build the user specified dts.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
2013-04-02 16:23:34 -04:00
Simon Glass
eea63e05d0 fdt: ARM: Add fdtcontroladdr to set device tree address in environment
This adds support for a new environment variable called 'fdtcontroladdr'. If
defined, the hex address is used as the address of the control fdt for U-Boot.

Note: I have not changed CONFIG_PRAM section as I already have an
outstanding patch on that.

Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-26 21:40:16 +02:00
Simon Glass
bbb0b128c3 fdt: Add support for embedded device tree (CONFIG_OF_EMBED)
This new option allows U-Boot to embed a binary device tree into its image
to allow run-time control of peripherals. This device tree is for U-Boot's
own use and is not necessarily the same one as is passed to the kernel.

The device tree compiler output should be placed in the $(obj)
rooted tree. Since $(OBJCOPY) insists on adding the path to the
generated symbol names, to ensure consistency it should be
invoked from the directory where the .dtb file is located and
given the input file name without the path.

This commit contains my entry for the ugliest Makefile / shell interaction
competition.

Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-26 21:38:59 +02:00