Re: [PATCH v4 00/11] Add dynamic boost control support

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On 6/8/23 06:17, Mario Limonciello wrote:
Dynamic boost control is a feature of some SoCs that allows
an authenticated entity to send commands to the security processor
to control certain SOC characteristics with the intention to improve
performance.

This is implemented via a mechanism that a userspace application would
authenticate using a nonce and key exchange over an IOCTL interface.

After authentication is complete an application can exchange signed
messages with the security processor and both ends can validate the
data transmitted.

This series includes a test suite that can be run on real hardware
to ensure that the communication works as expected.  This can also be
used for an application to model the communication path.

Two sysfs files are introduced for reading the PSP bootloader version
as well as TEE version which can be useful data points for debugging
communication problems.

For the series:

Acked-by: Tom Lendacky <thomas.lendacky@xxxxxxx>


---
v3->v4:
  * Pick up tags
  * Move ioctl calls into a shared library used by python ctypes

Mario Limonciello (11):
   crypto: ccp: Rename macro for security attributes
   crypto: ccp: Add support for displaying PSP firmware versions
   crypto: ccp: Add bootloader and TEE version offsets
   crypto: ccp: move setting PSP master to earlier in the init
   crypto: ccp: Add support for fetching a nonce for dynamic boost
     control
   crypto: ccp: Add support for setting user ID for dynamic boost control
   crypto: ccp: Add support for getting and setting DBC parameters
   crypto: ccp: Add a sample library for ioctl use
   crypto: ccp: Add a sample python script for Dynamic Boost Control
   crypto: ccp: Add unit tests for dynamic boost control
   crypto: ccp: Add Mario to MAINTAINERS

  Documentation/ABI/testing/sysfs-driver-ccp |  18 ++
  MAINTAINERS                                |  12 +
  drivers/crypto/ccp/Makefile                |   3 +-
  drivers/crypto/ccp/dbc.c                   | 250 +++++++++++++++++++
  drivers/crypto/ccp/dbc.h                   |  56 +++++
  drivers/crypto/ccp/psp-dev.c               |  19 +-
  drivers/crypto/ccp/psp-dev.h               |   1 +
  drivers/crypto/ccp/sp-dev.h                |   7 +
  drivers/crypto/ccp/sp-pci.c                |  96 +++++++-
  include/linux/psp-platform-access.h        |   4 +
  include/uapi/linux/psp-dbc.h               | 147 ++++++++++++
  tools/crypto/ccp/.gitignore                |   1 +
  tools/crypto/ccp/Makefile                  |  13 +
  tools/crypto/ccp/dbc.c                     |  72 ++++++
  tools/crypto/ccp/dbc.py                    |  64 +++++
  tools/crypto/ccp/dbc_cli.py                | 134 +++++++++++
  tools/crypto/ccp/test_dbc.py               | 266 +++++++++++++++++++++
  17 files changed, 1146 insertions(+), 17 deletions(-)
  create mode 100644 drivers/crypto/ccp/dbc.c
  create mode 100644 drivers/crypto/ccp/dbc.h
  create mode 100644 include/uapi/linux/psp-dbc.h
  create mode 100644 tools/crypto/ccp/.gitignore
  create mode 100644 tools/crypto/ccp/Makefile
  create mode 100644 tools/crypto/ccp/dbc.c
  create mode 100644 tools/crypto/ccp/dbc.py
  create mode 100755 tools/crypto/ccp/dbc_cli.py
  create mode 100755 tools/crypto/ccp/test_dbc.py


base-commit: 134e0dc6b73ab7e99464182356a8b3fa4ea3b499



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