Messages in this thread | | | Date | Tue, 30 Apr 2019 17:07:31 -0700 | From | Sodagudi Prasad <> | Subject | Re: PSCI version 1.1 and SYSTEM_RESET2 |
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On 2019-04-30 14:44, Sodagudi Prasad wrote: +Sudeep
> Hi Mark/Will, > > I would like to understand whether ARM linux community have plans to > support PSCI version 1.1 or not. > PSCI_1_1 specification introduced support for SYSTEM_RESET2 command > and this new command helps mobile devices to SYSTEM_WARM_RESET > support. Rebooting devices with warm reboot helps to capture the > snapshot of the ram contents for post-mortem analysis.
I think, there is a recent discussion from Sudeep for the SYSTEM_RESET2 support. https://patchwork.kernel.org/patch/10884345/
Hi Sudeep,
I was going through your discussion in the below list - https://lore.kernel.org/lkml/d73d3580-4ec1-a281-4585-5c776fc08c79@xilinx.com/
There is no provision to set up reboot mode dynamically instead kernel command line parameter. Looking for options to reboot device with warm reboot option when kernel crashed.
panic() --> emergency_restart() --> machine_emergency_restart() --> machine_restart(NULL);
It would nice if there is a config option to reboot the device either in warm or cold in the case of kernel panic. Calling machine_restart with a NULL parameter for kernel crash is leading to devices cold reboot.
-Thanks, Prasad
> > -Thanks, Prasad
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