| Commit message (Collapse) | Author | Age | Files | Lines |
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We currently support reboot mode communication with BootROMs of the
i.MX6Q/DL, i.MX8MM and STM32MP15x. For each of these, the user must
take care to use the correct reset as the highest priority reset often
clears the non-volatile register mapped by the syscon holding the reboot
mode. As we only have one BootROM, we can improve usability by adding a
global flag that describes whether a restart handler is suitable for
use after a bootrom reboot mode write. Add a flag bit describing this
and allow populating it from the device tree as well as from drivers.
Existing i.MX/STM32 drivers will be moved onto this in follow-up
commits.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20221017071000.1458292-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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So far, we were fine by using the highest priority restart handler
whenever more than one was available. There are reasons to want to
configure this however:
- When communicating with BootROM, e.g. to force boot from recovery
mode: The reset chosen must not cause the reboot mode stored to
volatile memory to vanish
- When testing (undocumented) reset behavior, e.g. to analyze how
the EFI reset behaves
Extend the reset command to support this. When no extra command line
option is supplied, the old behavior is maintained.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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While at it also drop references to the non-existing CREDITS file and do
some small rearrangements for some uniform formatting.
(SPDX-License-Identifier first, then copyright texts and then an empty
line.)
The advantage is that these specifiers are machine-parseable which helps
license conformance.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Barebox commands should not perform any action and return 0 if an
invalid parameter was given. This might cause undetected unintended
behvaior when calling commands with wrong options, either manually or
from a script.
Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.
The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.
To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch does probably too much, but it's hard (and very
cumbersome/time consuming) to break it out. What is does is this:
* each command has one short description, e.g. "list MUX configuration"
* made sure the short descriptions start lowercase
* each command has one usage. That string contains just the
options, e.g. "[-npn]". It's not part of the long help text.
* that is, it doesn't say "[OPTIONS]" anymore, every usable option
is listed by character in this (short) option string (the long
description is in the long help text, as before)
* help texts have been reworked, to make them
- sometimes smaller
- sometimes describe the options better
- more often present themselves in a nicer format
* all long help texts are now created with BUSYBOX_CMD_HELP_
macros, no more 'static const __maybe_unused char cmd_foobar_help[]'
* made sure the long help texts starts uppercase
* because cmdtp->name and cmdtp->opts together provide the new usage,
all "Usage: foobar" texts have been removed from the long help texts
* BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this
is nicer in the source code
* BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself
* made sure no line gets longer than 77 characters
* delibertely renamed cmdtp->usage, so that we can get compile-time
errors (e.g. in out-of-tree modules that use register_command()
* the 'help' command can now always emit the usage, even without
compiled long help texts
* 'help -v' gives a list of commands with their short description, this
is similar like the old "help" command before my patchset
* 'help -a' gives out help of all commands
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The old output of "help" was just producing a long list, that usually
scrolled of the screen (even on a X11 terminal). This list is more
compact, and also sorted by groups.
The old output format (plus grouping) is now available with 'help -v'.
Example:
Information commands:
?, devinfo, help, iomem, meminfo, version
Boot commands:
boot, bootm, go, loadb, loads, loadx, loady, saves, uimage
...
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Some of controlled by barebox peripheral devices may be
not affected by CPU reset, so we need call shutdown_barebox()
to stop them.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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for cpuinfo, clear, dhcp, false, login, lsmod, meminfo, passwd, pwd, reginfo,
reset, true, usb, version
for mach-imx and mach-mxs: dump_clocks
for u_serial: mycdev
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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This is unused in all commands and thus can be removed.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This has been done with the following script:
find -path ./.git -prune -o -type f -print0 | xargs -0 -r sed -i \
-e 's/u2boot/barebox/g' \
-e 's/U2Boot/barebox/g' \
-e 's/U-boot V2/barebox/g' \
-e 's/u-boot v2/barebox/g' \
-e 's/U-Boot V2/barebox/g' \
-e 's/U-Boot-v2/barebox/g' \
-e 's/U_BOOT/BAREBOX/g' \
-e 's/UBOOT/BAREBOX/g' \
-e 's/uboot/barebox/g' \
-e 's/u-boot/barebox/g' \
-e 's/u_boot/barebox/g' \
-e 's/U-Boot/barebox/g' \
-e 's/U-boot/barebox/g' \
-e 's/U-BOOT/barebox/g'
find -path ./.git -prune -o \( -name "*u-boot*" -o -name "*uboot*" -o -name "*u_boot*" \) -print0 | \
xargs -0 -r rename 's/u[-_]?boot/barebox/'
It needs some manual fixup following in the next patch
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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No need to check for maximum argument counts. The commands are
safe to be called with more arguments, so lets safe some bytes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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add file headers
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remove do_reset
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structure cleanup
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