help: OpenBMC host power on from power button press

[A, Maheswari]

Hi Matt,

Thanks for your response.

I am able to power on the Host by monitoring GPIO using “phosphor-gpio-monitor” service.

But still we need to achieve same result by org.openbmc.buttons.Power at 0.service<mailto:org.openbmc.buttons.Power at 0.service> in future.

Here is the response :

# systemctl status org.openbmc.buttons.Power at 0.service<mailto:org.openbmc.buttons.Power at 0.service>
● org.openbmc.buttons.Power at 0.service - Phosphor Power Button0
   Loaded: loaded (/lib/systemd/system/org.openbmc.buttons.Power at .service; indirect; vendor preset: enabled)
   Active: inactive (dead)

hwmi~# ps | grep button_power.exe
1205 root      3100 S    grep button_power.exe
hwmi:~#

button_power.exe is not running in BMC.  Service status with instance 0 is not showing any error. But button_power.exe is not running. So that I tried with instance 1.

I think below file is responsible for button power controlling in OBMC.
c/skeleton/blob/master/pwrbutton/button_power_obj.c

Here is the receipe file.

Cat ./meta-phosphor/recipes-phosphor/chassis/obmc-button-power.bb
SUMMARY = "OpenBMC org.openbmc.Button example implementation"
DESCRIPTION = "A sample implementation for a button controlling a power domain."
PR = "r1"

inherit skeleton-gdbus
inherit obmc-phosphor-dbus-service
inherit pkgconfig

SKELETON_DIR = "pwrbutton"

FMT = "org.openbmc.buttons.Power@{0}.service"
DBUS_SERVICE_${PN} += "${@compose_list(d, 'FMT', 'OBMC_POWER_BUTTON_INSTANCES')}"

If you need journal log, then I can share it. I need to understand the flow.

Please help to achieve.

Thanks
Maheswari A
From: Matt Spinler <mspinler at linux.vnet.ibm.com>
Sent: Saturday, October 27, 2018 1:45 AM
To: A, Maheswari <maheswari.a at atos.net>
Cc: OpenBMC Maillist <openbmc at lists.ozlabs.org>
Subject: Re: help: OpenBMC host power on from power button press


On 10/25/2018 11:52 PM, A, Maheswari wrote:
Hi,

I am new to openBMC project.

We are in the process of porting power button gpio interrupt handling in openBMC.

After some a lot of analysis, I found that obmc-button-power related service are necessary to power on the host using power button press event.

I have added POWER_BUTTON and machine specific GPIO number and polarity in gpio_defs.json.

While starting the “org.openbmc.button.Power” service, I am getting the below error.

   org.openbmc.buttons.Power at 1.service<mailto:org.openbmc.buttons.Power at 1.service> - Phosphor Power Button1
   Loaded: [[0;1;31merror[[0m (Reason: File exists)
   Active: inactive (dead)

Oct 22 14:14:13 hwmi systemd[1]: [[0;1;31m[[0;1;39m[[0;1;31morg.openbmc.buttons.Power at 1.service<mailto:0;1;31morg.openbmc.buttons.Power at 1.service>: Two services allocated for the same bus name org.open
bmc.butto.Power, refusing operation.[[0m

Please help to figure out and proceed.


Hi Maheswari,

I'm guessing you already have an org.openbmc.buttons.Power at 0.service<mailto:org.openbmc.buttons.Power at 0.service> running.

You can check with:

# systemctl status org.openbmc.buttons.Power at 0.service<mailto:org.openbmc.buttons.Power at 0.service>
or just check for the button_power.exe process already running.




Thanks
Maheswari A


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