When testing builds provided in https://github.com/openwrt/openwrt/pull/3360
I discovered that fdtfile was not set and as a result the firmware was not
functional. So I am documenting what is needed.
Signed-off-by: NDennis Gilmore <dennis@ausil.us>

Cc: Atish Patra <atish.patra@wdc.com>
Cc: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Vagrant Cascadian <vagrant@debian.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Karsten Merker <merker@debian.org>

Add compressed Image parsing support so that booti can parse both
flat and compressed Image to boot Linux. Currently, it is difficult
to calculate a safe address for every board where the compressed
image can be decompressed. It is also not possible to figure out the
size of the compressed file as well. Thus, user need to set two
additional environment variables kernel_comp_addr_r and filesize to
make this work.

Following compression methods are supported for now.
lzma, lzo, bzip2, gzip.

lz4 support is not added as ARM64 kernel generates a lz4 compressed
image with legacy header which U-Boot doesn't know how to parse and
decompress.

Tested on HiFive Unleashed and Qemu for RISC-V.
Tested on Qemu for ARM64.
Signed-off-by: NAtish Patra <atish.patra@wdc.com>
Reviewed-by: NTom Rini <trini@konsulko.com>
[trini: Fix minor rST formatting problems]
Signed-off-by: NTom Rini <trini@konsulko.com>

Add a boot command to distro boot to support disks connected over the
VirtIO bus. The boot command uses the shared block environment.
Signed-off-by: NLukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NAlexander Graf <agraf@suse.de>

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: NTom Rini <trini@konsulko.com>

The default of DISTRO_DEFAULTS is messy.  Using the 'imply' keyword
is equivalent and cleaner.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

With the contents of config_distro_defaults.h migrated to Kconfig,
we can remove this header file completely
Signed-off-by: NAdam Ford <aford173@gmail.com>

DISTRO_DEFAULTS is intended to mirror / replace
include/config_distro_defaults.h.

The intend is for boards which include this file to select this from
their Kconfig files and when moving setting to Kconfig which are #define-ed
in config_distro_defaults.h to select this from DISTRO_DEFAULTS so that
boards which have selected DISTRO_DEFAULTS will keep the same configuration
as before without needing any defconfig file changes.

The initial list of selected things matches all settings recently removed
from config_distro_defaults.h because they have been converted to Kconfig,
with the exception of CMD_ELF and CMD_NET, which have a default of y, if
the default of these ever changes they should be selected by DISTRO_DEFAULTS
too.

For testing and example purposes this commit also converts ARCH_SUNXI
to use DISTRO_DEFAULT instead of selecting everything it needs itself.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

Fixes typo of pxe_addr_r with pxefile_addr_r.
Signed-off-by: NVagrant Cascadian <vagrant@debian.org>
Reviewed-by: NStephen Warren <swarren@wwwdotorg.org>

The PCI bus must be enumerated before PCI devices, such as Ethernet
devices, are known to U-Boot. Enhance the distro boot commands to perform
PCI enumeration when needed.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Currently, the distro boot commands always enumerate USB devices before
performing network operations. However, depending on the board and end-
user configuration, network devices may not be attached to USB, and so
enumerating USB may not be necessary. Enhance the scripts to make this
step optional, so that the user can decrease boot time if they don't
need USB.

This change is performed by moving the "usb start" invocation into a
standalone variable. If the user desires, they can replace that
variable's value with some no-op command such as "true" instead.

Booting from a USB storage device always needs to enumerate USB devices,
so this action is still hard-coded.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

The word "partition" is doubled.  Keep decent forms for the
following lines.

Also, fix some other typos while we are here.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NStephen Warren <swarren@nvidia.com>

config_distro_bootcmd.h defines a common boot environment for multiple
platforms, including several environment variables that are intended for
interactive use by an end-user.  Document which variables are considered
public interfaces that must remain compatible in future u-boot versions.
Signed-off-by: NKarsten Merker <merker@debian.org>
Acked-by: NStephen Warren <swarren@nvidia.com>

Add documentation on how to setup a system to use the generic distro
configs and boot commands. This spells out what is needed to make a
system conformant, but does not limit the board to only the defaults.
Signed-off-by: NDennis Gilmore <dennis@ausil.us>
[swarren, added concept, user config, BOOT_TARGET_DEVICES sections.
edited the rest]
Signed-off-by: NStephen Warren <swarren@nvidia.com>