[PATCH v4 0/3] crypto: Add Versal TRNG driver

[Harsh Jain <h.jain@amd.com>]

Versal TRNG module consist of array of Ring Oscillators as entropy source
and a deterministic CTR_DRBG random bit generator (DRBG). Add driver to
registers entropy source to hwrng and CTR_DRBG generator to crypto subsystem.
Derivation Function (DF) defined in NIST SP-800-90A for CTR_DRBG is not
supported in current TRNG IP. For DF processing, Update drbg module to
export CTR_DRBG derivation function in df_sp80090a module.

Testing

Following compile tests done

* CONFIG_CRYPTO_DRBG_CTR = n and CONFIG_CRYPTO_DEV_XILINX_TRNG = n
* CONFIG_CRYPTO_DRBG_CTR = y and CONFIG_CRYPTO_DEV_XILINX_TRNG = n
* CONFIG_CRYPTO_DRBG_CTR = n and CONFIG_CRYPTO_DEV_XILINX_TRNG = m
* CONFIG_CRYPTO_DRBG_CTR = y and CONFIG_CRYPTO_DEV_XILINX_TRNG = m

Changes in v4
- Add df_sp80090a module to export CTR_DRBG DF function

Changes in v3
- Fix yaml warning introduced in v2.
- Squash fix patches

Changes in v2
- Fixed signoff chain
- Added 3 patch to fix Kernel test robot bugs


Harsh Jain (2):
  crypto: xilinx: Add TRNG driver for Versal
  crypto: drbg: Export CTR DRBG DF functions

Mounika Botcha (1):
  dt-bindings: crypto: Add node for True Random Number Generator

 .../bindings/crypto/xlnx,versal-trng.yaml     |  36 ++
 MAINTAINERS                                   |   6 +
 crypto/Kconfig                                |   8 +-
 crypto/Makefile                               |   2 +
 crypto/df_sp80090a.c                          | 243 ++++++++++
 crypto/drbg.c                                 | 244 +---------
 drivers/crypto/Kconfig                        |  13 +
 drivers/crypto/xilinx/Makefile                |   1 +
 drivers/crypto/xilinx/xilinx-trng.c           | 434 ++++++++++++++++++
 include/crypto/df_sp80090a.h                  |  27 ++
 include/crypto/drbg.h                         |  18 +
 11 files changed, 791 insertions(+), 241 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/crypto/xlnx,versal-trng.yaml
 create mode 100644 crypto/df_sp80090a.c
 create mode 100644 drivers/crypto/xilinx/xilinx-trng.c
 create mode 100644 include/crypto/df_sp80090a.h

-- 
2.34.1