This is useful when we need to control a particular environment variable.
Add a way to handle this.

Signed-off-by: Simon Glass <sjg@chromium.org>

Prepare v2022.01-rc3

Signed-off-by: Tom Rini <trini@konsulko.com>

At present an Exception is raised if a command fails. This is a very broad
class and makes it difficult for callers to catch the error without also
catching other things, like programming bugs.

Change it to ValueError to make this easier.

Signed-off-by: Simon Glass <sjg@chromium.org>

When running a program on the host, allow input to be passed in as stdin.
This is needed for running sfdisk, for example.

Signed-off-by: Simon Glass <sjg@chromium.org>

* don't inherit from object
* remove superfluous comprehension
* add module docstring

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

- Modern pytest is more visible in telling us about parameters that we
  had not described, so describe a few more.
- ConfigParser.readfp(...) is now configparser.read_file(...)
- As part of the "strings vs bytes" conversions in Python 3, we use the
  default encoding/decoding of utf-8 but in some places tell Python to
  replace problematic conversions rather than throw a fatal error.
- Fix a typo noticed while doing the above ("tot he" -> "to the").
- As suggested by Stephen, re-alphabetize the import list
- Per Heinrich, replace how we write contents in test_fit.py

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org> [on sandbox]
Signed-off-by: Tom Rini <trini@konsulko.com>

Use the 2to3 tool to perform numerous automatic conversions from Python
2 syntax to Python 3.  Also fix whitespace problems that Python 3
catches that Python 2 did not.

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org> [on sandbox]
Signed-off-by: Tom Rini <trini@konsulko.com>

At present the unicode filtering seems to get confused at times with
this error:

  UnicodeDecodeError: 'ascii' codec can't decode byte 0x80 in position
     32: ordinal not in range(128)

It seems to be due to self._nonprint being interpreted as UTF-8. Fix it
by using ordinals instead of characters, changing the string to set.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>

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>

Currently, if a test emits a warning message but otherwise passes, there's
no indication of this in the log summary, which can lead to warnings being
missed. Enhance the test logic to explicitly mention warnings in otherwise
passing tests, and not to collapse the log sections for tests with
warnings, so that they're more easily seen when scanning the log.

Signed-off-by: Stephen Warren <swarren@nvidia.com>