Hi,
Could we get some consistency in the use of "bios" vs. "Bios" vs. "BIOS",
please.
BIOS is preferred IMO.
On 7/30/20 2:41 PM, Daniel Gutson wrote:
>
> This initial version exports the BIOS Write Enable (bioswe),
> BIOS Lock Enable (ble), and the SMM Bios Write Protect (SMM_BWP)
> fields of the Bios Control register. The idea is to keep adding more
> flags, not only from the BC but also from other registers in following
> versions.
>
> The goal is that the attributes are avilable to fwupd when SecureBoot
available
> is turned on.
>
> The patch provides a new misc driver, as proposed in the previous patch,
> that provides a registration function for HW Driver devices to register
> class_attributes.
> In this case, the intel SPI flash chip (intel-spi) registers three
> class_attributes corresponding to the fields mentioned above.
>
> Signed-off-by: Daniel Gutson <[email protected]>
> ---
> .../ABI/stable/sysfs-class-platform-lockdown | 23 +++++++
> MAINTAINERS | 7 +++
> drivers/misc/Kconfig | 9 +++
> drivers/misc/Makefile | 1 +
> drivers/misc/platform-lockdown-attrs.c | 57 +++++++++++++++++
> drivers/mtd/spi-nor/controllers/Kconfig | 1 +
> .../mtd/spi-nor/controllers/intel-spi-pci.c | 49 +++++++++++++++
> drivers/mtd/spi-nor/controllers/intel-spi.c | 62 +++++++++++++++++++
> .../platform_data/platform-lockdown-attrs.h | 19 ++++++
> 9 files changed, 228 insertions(+)
> create mode 100644 Documentation/ABI/stable/sysfs-class-platform-lockdown
> create mode 100644 drivers/misc/platform-lockdown-attrs.c
> create mode 100644 include/linux/platform_data/platform-lockdown-attrs.h
>
> diff --git a/Documentation/ABI/stable/sysfs-class-platform-lockdown
> b/Documentation/ABI/stable/sysfs-class-platform-lockdown
> new file mode 100644
> index 000000000000..6034d6cbefac
> --- /dev/null
> +++ b/Documentation/ABI/stable/sysfs-class-platform-lockdown
> @@ -0,0 +1,23 @@
> +What: /sys/class/platform-lockdown/bioswe
> +Date: July 2020
> +KernelVersion: 5.8.0
> +Contact: Daniel Gutson <[email protected]>
> +Description: If the system firmware set BIOS Write Enable.
> + 0: writes disabled, 1: writes enabled.
> +Users: https://github.com/fwupd/fwupd
> +
> +What: /sys/class/platform-lockdown/ble
> +Date: July 2020
> +KernelVersion: 5.8.0
> +Contact: Daniel Gutson <[email protected]>
> +Description: If the system firmware set Bios Lock Enable.
BIOS
> + 0: SMM lock disabled, 1: SMM lock enabled.
> +Users: https://github.com/fwupd/fwupd
> +
> +What: /sys/class/platform-lockdown/smm_bwp
> +Date: July 2020
> +KernelVersion: 5.8.0
> +Contact: Daniel Gutson <[email protected]>
> +Description: If the system firmware set SMM Bios Write Protect.
BIOS
> + 0: writes disabled unless in SMM, 1: writes enabled.
> +Users: https://github.com/fwupd/fwupd
cheers.
--
~Randy
