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* restart: fix restart_handler_get_by_name documentationAhmad Fatoum2023-08-231-1/+1
| | | | | | | | | restart_handler_get_by_name() does what its name suggests, so reflect that in the documentation comment. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20230822074738.3905283-2-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* restart: add reset -w for warm bootrom resetAhmad Fatoum2022-10-271-4/+13
| | | | | | | | | | | | | | | | | | 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>
* restart: do restart-priority OF parsing in restart_handler_registerAhmad Fatoum2022-10-271-15/+5
| | | | | | | | | | | | The restart-priority OF property is parsed for a number of MFDs, but there is no reason really not to parse it for every restart handler that has a device tree node like we already do for watchdogs. Add a new struct restart_handler::of_node field and look into it if populated. With this of_get_restart_priority, is no longer used, so drop it. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20221017071000.1458292-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* common: replace license statements with SPDX-License-IdentifiersAhmad Fatoum2020-11-271-10/+1
| | | | | | | | | | | | | For all files in common/ that already have a license text: - Replace with appropriate SPDX-License-Identifier - Remove empty comment lines around replacement - remove comment completely if only thing remaining is name of file without description Reviewed-by: Roland Hieber <rhi@pengutronix.de> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: reset: allow specifying reset by nameAhmad Fatoum2020-09-151-2/+26
| | | | | | | | | | | | | | | | | | 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>
* restart: give all restart handlers a descriptive nameAhmad Fatoum2020-09-151-1/+4
| | | | | | | | | | | | | With incoming changes to choose a specific reset method, give all currently unnamed "default" reset handlers a name: - soc reset via SoC-specific means - soc-wdt reset via SoC watchdog timer - vector reset via jump to reset vector - efi reset via EFI firmware Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* common: restart: number unnamed restart handlersAhmad Fatoum2020-09-151-1/+3
| | | | | | | | | Follow-up commit allows referencing specific restart handler by name. Restart handlers default to "default" as name when none is given. Number them sequentially instead. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: remove references to CREDITSUwe Kleine-König2020-04-271-3/+0
| | | | | | | | The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97 ("Remove the CREDITS file"). Remove references to it from several files. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* restart: replace reset_cpu with registered restart handlersSascha Hauer2015-08-271-0/+112
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>