From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751965AbbJEMPv (ORCPT ); Mon, 5 Oct 2015 08:15:51 -0400 Received: from mga01.intel.com ([192.55.52.88]:44599 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751054AbbJEMPt (ORCPT ); Mon, 5 Oct 2015 08:15:49 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,638,1437462000"; d="scan'208";a="784712925" From: "Kweh, Hock Leong" To: Matt Fleming , Greg Kroah-Hartman Cc: Ong Boon Leong , LKML , linux-efi@vger.kernel.org, Sam Protsenko , Peter Jones , Andy Lutomirski , Roy Franz , Borislav Petkov , James Bottomley , Linux FS Devel , "Kweh, Hock Leong" , Fleming Matt Subject: [PATCH v7 0/2] Enable capsule loader interface for efi firmware updating Date: Tue, 6 Oct 2015 04:15:53 +0800 Message-Id: <1444076155-19295-1-git-send-email-hock.leong.kweh@intel.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Kweh, Hock Leong" Dear maintainers & communities, This patchset is created on top of Matt's patchset: 1.)https://lkml.org/lkml/2014/10/7/390 "[PATCH 1/2] efi: Move efi_status_to_err() to efi.h" 2.)https://lkml.org/lkml/2014/10/7/391 "[PATCH 2/2] efi: Capsule update support" It expose a misc char interface for user to upload the capsule binary and calling efi_capsule_update() API to pass the binary to EFI firmware. The steps to update efi firmware are: 1.) cat firmware.cap > /dev/efi_capsule_loader 2.) reboot Any failed upload error message will be returned while doing "cat" through Write() function call. Tested the code with Intel Quark Galileo platform. Thanks. --- NOTE: If Matt agrees with this design, [PATCH v7 1/1] will be squash into his [PATCH 2/2]: https://lkml.org/lkml/2014/10/7/391 for submitting changelog v7: * add successful message printed in dmesg * shorten the code in efi_capsule_write() by splitting out efi_capsule_setup_info() & efi_capsule_submit_update() functions * design added capability to support multiple file open action * re-write those comments by following standard format * design added the "uncomplete" error return through flush() file operation changelog v6: * clean up on error handling for better code flow and review * clean up on pr_err() for critical error only * design taking care writing block that below PAGE_SIZE * once error has occurred, design will return -EIO until file close * document design expectations/scenarios in the code * change the dynamic allocation cap_info struct to statically allocated changelog v5: * changed to new design without leveraging firmware_class API * use misc_char device interface instead of sysfs * error return through file Write() function call Kweh, Hock Leong (2): efi: export efi_capsule_supported() function symbol efi: a misc char interface for user to update efi firmware drivers/firmware/efi/Kconfig | 10 drivers/firmware/efi/Makefile | 1 drivers/firmware/efi/capsule.c | 1 drivers/firmware/efi/efi-capsule-loader.c | 336 +++++++++++++++++++++++++++++ 4 files changed, 348 insertions(+) create mode 100644 drivers/firmware/efi/efi-capsule-loader.c -- 1.7.9.5