u-boot.git/include/sysreset.h, branch v2026.07

drivers: sysreset: revert support for args in request

2026-07-03T19:45:58Z

This reverts: - commit e49c84f7bb7b ("doc: usage: cmd: reset: specify when the -edl option is available") - commit 1076feb8a3f9 ("cmd: boot: fix edl being shown when not supported") - commit 63c806ba0e12 ("qcom_defconfig: enable psci based sysreset") - commit ef06c5d76ff4 ("cmd: boot: Add '-edl' option to reset command documentation") - commit 32825eaddc37 ("sysreset: Implement PSCI based reset to EDL mode for QCOM SoCs") - commit fcb48b89813b ("drivers: sysreset: Add sysreset op that can take arguments") There was a conflict reverting commit 63c806ba0e12 ("qcom_defconfig: enable psci based sysreset") due to commit 02ef1859b44f ("configs: Resync with savedefconfig"), but the conflict resolution was trivial. The args support for the sysreset uclass contains a logic bug. The first sysreset device implementing the request_arg callback will consume the args, not support the specified arg and thus return -EPROTONOSUPPORT which will stop the iteration over all sysreset devices. This is an issue if one has multiple sysreset devices and each with support for different (valid) args. If a sysreset device implements a -dummy argument and another -foo and a user calls reset -dummy from the U-Boot CLI, it'll depend on which sysreset device will be attempted first. If it is the one implementing -foo, it'll return it doesn't support the argument with -EPROTONOSUPPORT in which case the device implementing -dummy will never be attempted and instead we'll do a cold reset which is very likely not what's expected from the user. Casey suggested[1] we revert this and start from scratch again with a different implementation instead. [1] https://lore.kernel.org/u-boot/77ff0f56-5c3b-42e7-bdd1-bf90296da900@linaro.org/ Acked-by: Casey Connolly Signed-off-by: Quentin Schulz

drivers: sysreset: Add sysreset op that can take arguments

2026-04-27T10:38:44Z

Add a 'request_arg' op to struct sysreset_ops to enable sysreset drivers to receive arguments given to the 'reset' command. Process the request_arg() op before the usual request() op. Reviewed-by: Casey Connolly Reviewed-by: Sumit Garg Signed-off-by: Varadarajan Narayanan Reviewed-by: Tom Rini Link: https://patch.msgid.link/20260121063920.1500293-3-varadarajan.narayanan@oss.qualcomm.com Signed-off-by: Casey Connolly

watchdog: Automatically register device with sysreset

2021-11-04T07:57:19Z

Add an option to automatically register watchdog devices with the wdt_reboot driver for use with sysreset. This allows sysreset to be a drop-in replacement for platform-specific watchdog reset code, without needing any device tree changes. Signed-off-by: Samuel Holland Reviewed-by: Stefan Roese

doc: add system reset to API documentation

2021-10-21T01:46:03Z

Complete the Sphinx documentation in include/sysreset.h Add the include to the generated HTML documentation of the U-Boot API. Signed-off-by: Heinrich Schuchardt

reset: Remove addr parameter from reset_cpu()

2021-03-02T19:03:02Z

Historically, the reset_cpu() function had an `addr` parameter which was meant to pass in an address of the reset vector location, where the CPU should reset to. This feature is no longer used anywhere in U-Boot as all reset_cpu() implementations now ignore the passed value. Generic code has been added which always calls reset_cpu() with `0` which means this feature can no longer be used easily anyway. Over time, many implementations seem to have "misunderstood" the existence of this parameter as a way to customize/parameterize the reset (e.g. COLD vs WARM resets). As this is not properly supported, the code will almost always not do what it is intended to (because all call-sites just call reset_cpu() with 0). To avoid confusion and to clean up the codebase from unused left-overs of the past, remove the `addr` parameter entirely. Code which intends to support different kinds of resets should be rewritten as a sysreset driver instead. This transformation was done with the following coccinelle patch: @@ expression argvalue; @@ - reset_cpu(argvalue) + reset_cpu() @@ identifier argname; type argtype; @@ - reset_cpu(argtype argname) + reset_cpu(void) { ... } Signed-off-by: Harald Seiler Reviewed-by: Simon Glass

common: Drop asm/global_data.h from common header

2021-02-02T20:33:42Z

Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include at all, so remove that include. Signed-off-by: Simon Glass Signed-off-by: Tom Rini

sysreset: Add a way to find the last reset

2018-10-09T10:40:27Z

We have a method to return the last reset as a string for humans, but not a method that allows it to be used programmatically. Add a new method that returns the last reset as an enum. Signed-off-by: Simon Glass

sysreset: Tidy up a few comments and logging

2018-10-09T10:40:27Z

Some comments are incorrect or missing pieces. Fix these and use logging to print the error. Signed-off-by: Simon Glass

sysreset: Add get_status method

2018-09-18T06:01:18Z

It's useful to have the reset status of the SoC printed out during reset (e.g. to learn whether the reset was caused by software or a watchdog). As a first step to implement this, add a get_status method to the sysreset class, which enables the caller to get printable information about the reset status (akin to get_desc in the CPU uclass). Reviewed-by: Simon Glass Signed-off-by: Mario Six

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

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