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Message-Id: <1454042394-21507-1-git-send-email-hock.leong.kweh@intel.com>
Date: Fri, 29 Jan 2016 12:39:53 +0800
From: "Kweh, Hock Leong" <hock.leong.kweh@...el.com>
To: Matt Fleming <matt@...sole-pimps.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Matt Fleming <matt@...eblueprint.co.uk>
Cc: Ong Boon Leong <boon.leong.ong@...el.com>,
LKML <linux-kernel@...r.kernel.org>, linux-efi@...r.kernel.org,
Sam Protsenko <semen.protsenko@...aro.org>,
Peter Jones <pjones@...hat.com>,
Andy Lutomirski <luto@...capital.net>,
Roy Franz <roy.franz@...aro.org>,
Borislav Petkov <bp@...en8.de>,
James Bottomley <James.Bottomley@...senpartnership.com>,
Linux FS Devel <linux-fsdevel@...r.kernel.org>,
Anvin H Peter <h.peter.anvin@...el.com>,
"Kweh, Hock Leong" <hock.leong.kweh@...el.com>
Subject: [PATCH v11 0/1] Enable capsule loader interface for efi firmware updating
From: "Kweh, Hock Leong" <hock.leong.kweh@...el.com>
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
file operation write() function call.
Tested the code with Intel Quark Galileo GEN1 platform.
Thanks.
---
changelog v11:
* rebase to v4.5-rc1
* correct vocabulary base on Bryan's comments
* Optimise ->pages & ->index code flow base on Matt's comments
changelog v10:
* rebase to v4.4
* added efi runtime services check at efi_capsule_loader_init()
* fixed checkpatch issues
* code clean up base on Borislav's comments
changelog v9:
* squash 2 patches to become 1 patch
* change function param to pass in cap_info instead of file structure
* perform both alloc inside efi_capsule_setup_info()
* change to use multiple exit labels instead of one function call
* further code clean up base on Matt's comments
changelog v8:
* further clean up on kunmap() & efi_free_all_buff_pages()
* design enhanced to support 1st few writes are less than efi header size
* removed support to padding capsule and flag error once the upload size
bigger than header defined size
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 (1):
efi: a misc char interface for user to update efi firmware
drivers/firmware/efi/Kconfig | 9 +
drivers/firmware/efi/Makefile | 1 +
drivers/firmware/efi/capsule-loader.c | 334 +++++++++++++++++++++++++++++++++
drivers/firmware/efi/capsule.c | 1 +
4 files changed, 345 insertions(+)
create mode 100644 drivers/firmware/efi/capsule-loader.c
--
1.7.9.5
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