[Skiboot] [RFC PATCH v2 0/8] PEF support in skiboot

[Ryan Grimm]

Hi,

These are RFC V2 patches for Protected Execution Facility (PEF) support in
Skiboot.  They are based off of Skiboot v6.4.

The first patch is documentation which describes how skiboot initializes and
interacts with the ultravisor.

The previous patches are here:
https://lists.ozlabs.org/pipermail/skiboot/2019-September/015230.html and all
of the TODOs are fixed in this patch set, except we don't have OCC, but I
cleaned up our OCC hack patch and included it here so we actually boot on
Hostboot.

I (hope I) addressed Stewart's comments.  Mainly, that we have documentation,
use secure and trusted boot, and are smarter about allocating and freeing
memory for the UV image.

They have been tested in Mambo, BML, and Hostboot.

Thanks,
Ryan

Claudio Carvalho (1):
  libstb/trustedboot: Map UV image measurement to PCR6

Madhavan Srinivasan (5):
  Add ultravisor support in OPAL
  pef: Add memcons support for ultravisor
  pef: ultra-call support for skiboot
  xscoms: read/write xscoms using ucall
  skiboot/imc: Disable IMC node when UV enabled

Ryan Grimm (2):
  doc/opal-uv-api.rst
  occ: Disable OCC on UV systems

 asm/head.S                 |  54 ++++
 core/flash.c               |   1 +
 core/init.c                |  11 +
 doc/opal-uv-api.rst        | 372 +++++++++++++++++++++++++++
 hdata/memory.c             |  17 +-
 hdata/spira.c              |   4 +
 hw/Makefile.inc            |   1 +
 hw/fsp/fsp.c               |   2 +
 hw/imc.c                   |  11 +
 hw/occ-sensor.c            |   6 +
 hw/occ.c                   |  25 +-
 hw/ultravisor.c            | 508 +++++++++++++++++++++++++++++++++++++
 include/console.h          |   3 +
 include/debug_descriptor.h |   1 +
 include/mem-map.h          |  16 +-
 include/platform.h         |   1 +
 include/processor.h        |  12 +
 include/ultravisor-api.h   |  18 ++
 include/ultravisor.h       |  56 ++++
 include/xscom.h            |  11 +-
 libstb/trustedboot.c       |   1 +
 21 files changed, 1120 insertions(+), 11 deletions(-)
 create mode 100644 doc/opal-uv-api.rst
 create mode 100644 hw/ultravisor.c
 create mode 100644 include/ultravisor-api.h
 create mode 100644 include/ultravisor.h

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2.21.0