mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 00:11:51 +01:00
a3423b3f23
OEM_REVISION is 32-bit unsigned number. It should be increased only when changing software version. Therefore it should not depend on build time. Change calculation to use U-Boot version numbers and set this revision to date number. Prior this change OEM_REVISION was calculated from build date and stored in the same format. After this change macro U_BOOT_BUILD_DATE is not used in other files so remove it from global autogenerated files and also from Makefile. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Simon Glass <sjg@chromium.org>
103 lines
3.3 KiB
ReStructuredText
103 lines
3.3 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
|
|
.. Copyright (c) 2013 The Chromium OS Authors.
|
|
|
|
Version information
|
|
===================
|
|
|
|
U-Boot releases are named by year and patch level, for example 2020.10 means the
|
|
release that came out in October 2020. Release candidates are tagged every few
|
|
weeks as the project heads to the next release. So 2020.10-rc1 was the first
|
|
release candidate (RC), tagged soon after 2020.07 was released.
|
|
|
|
See https://www.denx.de/wiki/view/U-Boot/ReleaseCycle for full details.
|
|
|
|
Within the build system, various Makefile variables are created, making use of
|
|
VERSION, PATCHLEVEL and EXTRAVERSION defined at the top of 'Makefile'. There is
|
|
also SUBLEVEL available for downstream use. See also CONFIG_IDENT_STRING.
|
|
|
|
Some variables end up in a generated header file at
|
|
include/generated/version_autogenerated.h and can be accessed from C source by
|
|
including <version.h>
|
|
|
|
The following are available:
|
|
|
|
UBOOTRELEASE (Makefile)
|
|
Full release version as a string. If this is not a tagged release, it also
|
|
includes the number of commits since the last tag as well as the the git
|
|
hash. If there are uncommitted changes a '-dirty' suffix is added too.
|
|
|
|
This is written by scripts/setlocalversion (maintained by Linux) to
|
|
include/config/uboot.release and ends up in the UBOOTRELEASE Makefile
|
|
variable.
|
|
|
|
Examples::
|
|
|
|
2020.10-rc3
|
|
2021.01-rc5-00248-g60dd854f3ba-dirty
|
|
|
|
PLAIN_VERSION (string #define)
|
|
This is UBOOTRELEASE but available in C source.
|
|
|
|
Examples::
|
|
|
|
2020.10
|
|
2021.01-rc5-00248-g60dd854f3ba-dirty
|
|
|
|
UBOOTVERSION (Makefile)
|
|
This holds just the first three components of UBOOTRELEASE (i.e. not the
|
|
git hash, etc.)
|
|
|
|
Examples::
|
|
|
|
2020.10
|
|
2021.01-rc5
|
|
|
|
U_BOOT_VERSION (string #define)
|
|
"U-Boot " followed by UBOOTRELEASE, for example::
|
|
|
|
U-Boot 2020.10
|
|
U-Boot 2021.01-rc5
|
|
|
|
This is used as part of the banner string when U-Boot starts.
|
|
|
|
U_BOOT_VERSION_NUM (integer #define)
|
|
Release year, e.g. 2021 for release 2021.01. Note
|
|
this is an integer, not a string.
|
|
|
|
U_BOOT_VERSION_NUM_PATCH (integer #define)
|
|
Patch number, e.g. 1 for release 2020.01. Note
|
|
this is an integer, not a string.
|
|
|
|
Human readable U-Boot version string is available in header file
|
|
include/version_string.h in following variable:
|
|
|
|
version_string (const char[])
|
|
U_BOOT_VERSION followed by build-time information
|
|
and CONFIG_IDENT_STRING.
|
|
|
|
Examples::
|
|
|
|
U-Boot 2020.10 (Jan 06 2021 - 08:50:36 -0700)
|
|
U-Boot 2021.01-rc5-00248-g60dd854f3ba-dirty (Jan 06 2021 - 08:50:36 -0700) for spring
|
|
|
|
Build date/time is also included. See the generated file
|
|
include/generated/timestamp_autogenerated.h for the available
|
|
fields. For example::
|
|
|
|
#define U_BOOT_DATE "Jan 06 2021" (US format only)
|
|
#define U_BOOT_TIME "08:50:36" (24-hour clock)
|
|
#define U_BOOT_TZ "-0700" (Time zone in hours)
|
|
#define U_BOOT_EPOCH 1609948236
|
|
|
|
The Epoch is the number of seconds since midnight on 1/1/70. You can convert
|
|
this to a time with::
|
|
|
|
$ date -u -d @1609948236
|
|
Wed 06 Jan 2021 03:50:36 PM UTC
|
|
$ date -d 'Wed 06 Jan 2021 03:50:36 PM UTC' +%s
|
|
1609948236
|
|
|
|
Every time you build U-Boot this will update based on the time
|
|
on your build machine. See 'Reproducible builds' if you want to
|
|
avoid that.
|