[PATCH v12 00/13] HP BIOSCFG driver

Jorge Lopez
2023-05-05T22:00:53Z

HP BIOS Configuration driver purpose is to provide a driver supporting
the latest sysfs class firmware attributes framework allowing the user
to change BIOS settings and security solutions on HP Inc.’s commercial
notebooks.

Many features of HP Commercial notebooks can be managed using Windows
Management Instrumentation (WMI). WMI is an implementation of Web-Based
Enterprise Management (WBEM) that provides a standards-based interface
for changing and monitoring system settings. HP BIOSCFG driver provides
a native Linux solution and the exposed features facilitates the
migration to Linux environments.

The Linux security features to be provided in hp-bioscfg driver enables
managing the BIOS settings and security solutions via sysfs, a virtual
filesystem that can be used by user-mode applications. The new
documentation cover HP-specific firmware sysfs attributes such Secure
Platform Management and Sure Start. Each section provides security
feature description and identifies sysfs directories and files exposed
by the driver.

Many HP Commercial notebooks include a feature called Secure Platform
Management (SPM), which replaces older password-based BIOS settings
management with public key cryptography. PC secure product management
begins when a target system is provisioned with cryptographic keys
that are used to ensure the integrity of communications between system
management utilities and the BIOS.

HP Commercial notebooks have several BIOS settings that control its
behaviour and capabilities, many of which are related to security.
To prevent unauthorized changes to these settings, the system can
be configured to use a cryptographic signature-based authorization
string that the BIOS will use to verify authorization to modify the
setting.

Linux Security components are under development and not published yet.
The only linux component is the driver (hp bioscfg) at this time.
Other published security components are under Windows.

Signed-off-by: Jorge Lopez <jorge.lopez2@hp.com>

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Based on the latest platform-drivers-x86.git/for-next

History

Version 12
Only patches marked [update] changed between version 11 and 12

Patches
Documentation [update]
biosattr-interface [update]
bioscfg [update]
int-attributes [update]
ordered-attributes [update]
passwdobj-attributes [deleted]
string-attributes [update]
bioscfg-h [update]
enum-attributes [update]
passwdattr-interface [update]
spmobj-attributes [update]
surestart-attributes [update]
Makefile ../hp/Makefile ../hp/Kconfig [update]
MAINTAINERS

Version 11
Only patches marked [update] changed between version 10 and 11

Patches
Documentation
biosattr-interface [update]
bioscfg
int-attributes
ordered-attributes
passwdobj-attributes [update]
string-attributes
bioscfg-h
enum-attributes
passwdattr-interface
spmobj-attributes [update]
surestart-attributes [update]
Makefile ../hp/Makefile ../hp/Kconfig
MAINTAINERS

Version 10
Break down changes to single files per patch
Removed SPM/statusbin support
Patches
Documentation
biosattr-interface
bioscfg
int-attributes
ordered-attributes
passwdobj-attributes
string-attributes
bioscfg-h
enum-attributes
passwdattr-interface
spmobj-attributes
surestart-attributes
Makefile ../hp/Makefile ../hp/Kconfig
MAINTAINERS

Version 9
Includes only sysfs-class-firmware-attributes documentation

Version 8
Includes only sysfs-class-firmware-attributes documentation

Version 7
Includes only sysfs-class-firmware-attributes documentation

Version 6
Breaks down the changes into 4 patches
SureAdmin-attributes was removed

Version 5
Remove version 4 patch 1
Address review changes proposed in Version 4
Reorganize all patches number and file order

Jorge Lopez (13):
HP BIOSCFG driver - Documentation
HP BIOSCFG driver - biosattr-interface
HP BIOSCFG driver - bioscfg
HP BIOSCFG driver - int-attributes
HP BIOSCFG driver - ordered-attributes
HP BIOSCFG driver - passwdobj-attributes
HP BIOSCFG driver - string-attributes
HP BIOSCFG driver - bioscfg-h
HP BIOSCFG driver - enum-attributes
HP BIOSCFG driver - spmobj-attributes
HP BIOSCFG driver - surestart-attributes
HP BIOSCFG driver - Makefile
HP BIOSCFG driver - MAINTAINERS

.../testing/sysfs-class-firmware-attributes | 117 ++-
MAINTAINERS | 6 +
drivers/platform/x86/hp/Kconfig | 16 +
drivers/platform/x86/hp/Makefile | 1 +
drivers/platform/x86/hp/hp-bioscfg/Makefile | 12 +
.../x86/hp/hp-bioscfg/biosattr-interface.c | 319 ++++++
drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 982 ++++++++++++++++++
drivers/platform/x86/hp/hp-bioscfg/bioscfg.h | 523 ++++++++++
.../x86/hp/hp-bioscfg/enum-attributes.c | 482 +++++++++
.../x86/hp/hp-bioscfg/int-attributes.c | 448 ++++++++
.../x86/hp/hp-bioscfg/ordered-attributes.c | 443 ++++++++
.../x86/hp/hp-bioscfg/passwdobj-attributes.c | 584 +++++++++++
.../x86/hp/hp-bioscfg/spmobj-attributes.c | 381 +++++++
.../x86/hp/hp-bioscfg/string-attributes.c | 415 ++++++++
.../x86/hp/hp-bioscfg/surestart-attributes.c | 133 +++
15 files changed, 4860 insertions(+), 2 deletions(-)
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/Makefile
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/biosattr-interface.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/bioscfg.h
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/ordered-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/surestart-attributes.c

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2.34.1