linux-kernel - RE: [PATCH v2 3/3] efi: Capsule update with user helper interface

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Date:	Thu, 6 Nov 2014 12:53:54 +0000
From:	"Kweh, Hock Leong" <hock.leong.kweh@...el.com>
To:	Andy Lutomirski <luto@...capital.net>,
	Greg KH <gregkh@...uxfoundation.org>
CC:	"Fleming, Matt" <matt.fleming@...el.com>,
	Sam Protsenko <semen.protsenko@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Ong, Boon Leong" <boon.leong.ong@...el.com>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Ming Lei <ming.lei@...onical.com>
Subject: RE: [PATCH v2 3/3] efi: Capsule update with user helper interface

> -----Original Message-----
> From: Andy Lutomirski [mailto:luto@...capital.net]
> Sent: Wednesday, November 05, 2014 12:36 AM
> 
> Am I missing something here?  The current proposal is missing the
> success/failure part, unless you count the loaded count (in a different sysfs
> directory) as a useful interface for that.

Here is my sample shell script which allow me to do multi capsule binaries upload
and obtain error message if error occur:

#!/bin/sh

old=$(cat /sys/devices/platform/efi_capsule_user_helper/capsule_loaded)

for arg in "$@"
do
	if [ -f $arg ]
	then
		echo 1 > /sys/class/firmware/efi-capsule-file/loading
		cat $arg > /sys/class/firmware/efi-capsule-file/data
		echo 0 > /sys/class/firmware/efi-capsule-file/loading

		oldtime=$(date +%S)
		oldtime=$(((time + 2) % 60))
		until [ -f /sys/class/firmware/efi-capsule-file/loading ]
		do
			newtime=$(date +%S)
			if [ $newtime -eq $oldtime ]
			then
				break
			fi
		done

		old=$((old + 1))
		new=$(cat /sys/devices/platform/efi_capsule_user_helper/capsule_loaded)
		if [ ! $new -eq $old ]
		then
			echo "Capsule binary $arg upload failed"
			dmesg | tail | grep -v platform | grep -e efi
			exit 1
		fi
	else
		echo "File $arg not found !!"
	fi
done
exit 0


Regards,
Wilson