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AMD Seamless Firmware Servicing (SFS) is a secure method to allow non-persistent updates to running firmware and settings without requiring BIOS reflash and/or system reset. SFS does not address anything that runs on the x86 processors and it can be used to update ASP firmware, modules, register settings and update firmware for other microprocessors like TMPM, etc. SFS driver support adds ioctl support to communicate the SFS commands to the ASP/PSP by using the TEE mailbox interface. The Seamless Firmware Servicing (SFS) driver is added as a PSP sub-device. For detailed information, please look at the SFS specifications: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/58604.pdf Signed-off-by: Ashish Kalra <ashish.kalra@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Link: https://lore.kernel.org/cover.1758057691.git.ashish.kalra@amd.com |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.