linux-kernel - Re: [PATCH v2] firmware/psci: add support for SYSTEM

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Message-ID: <d73d3580-4ec1-a281-4585-5c776fc08c79@xilinx.com>
Date:   Mon, 30 Jul 2018 10:59:21 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Sudeep Holla <sudeep.holla@....com>,
        Michal Simek <michal.simek@...inx.com>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Mark Rutland <mark.rutland@....com>, Will Wong <WILLW@...inx.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        <linux-kernel@...r.kernel.org>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH v2] firmware/psci: add support for SYSTEM_RESET2

Hi Sudeep,

On 26.7.2018 15:29, Sudeep Holla wrote:
> Hi Michal,
> 
> Sorry somehow missed this email.
> 
> On 19/07/18 11:47, Michal Simek wrote:
>> On 9.7.2018 15:21, Sudeep Holla wrote:
> 
> [...]
> 
>>>
>>> I think with efi_reboot, if user execute the command "reboot warm", it
>>> will set REBOOT_WARM. I was thinking something similar for psci too. I
>>> can drop REBOOT_SOFT if that's not correct.
>>
>> Have you found more details about efi_reboot and passing information in
>> case of reboot warm?
>>
> 
> I was just referring to drivers/firmware/efi/reboot.c- function efi_reboot.
> 
> Anyways the function reboot_setup in kernel/reboot.c sets the reboot
> mode parsing the string passed by the user(e.g.: warm, cold, hard, gpio,
> soft,..etc it just scans the first character TBH)

ok. I see. It is just reusing that reboot=X passed via kernel command line.

Thanks,
Michal