[Skiboot] [PATCH v8 1/3] Self Save: Introducing Support for SPR Self Save

[Vaidyanathan Srinivasan]

* Pratik Rajesh Sampat <psampat at linux.ibm.com> [2020-04-23 16:24:36]:

> From: Prem Shanker Jha <premjha2 at in.ibm.com>
> 
> The commit is a merger of commits that makes the following changes:
> 1. Commit fixes some issues with code found during integration test
>   -  replacement of addi with xor instruction during self save API.
>   -  fixing instruction generation for MFMSR during self save
>   -  data struct updates in STOP API
>   -  error RC updates for hcode image build
>   -  HOMER parser updates.
>   -  removed self save support for URMOR and HRMOR
>   -  code changes for compilation with OPAL
>   -  populating CME Image header with unsecure HOMER address.
> 
> Key_Cronus_Test=PM_REGRESS
> 
> Change-Id: I7cedcc466267c4245255d8d75c01ed695e316720
> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66580
> Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot at us.ibm.com>
> Tested-by: HWSV CI <hwsv-ci+hostboot at us.ibm.com>
> Tested-by: PPE CI <ppe-ci+hostboot at us.ibm.com>
> Tested-by: Jenkins Server <pfd-jenkins+hostboot at us.ibm.com>
> Tested-by: Cronus HW CI <cronushw-ci+hostboot at us.ibm.com>
> Tested-by: Hostboot CI <hostboot-ci+hostboot at us.ibm.com>
> Reviewed-by: Gregory S. Still <stillgs at us.ibm.com>
> Reviewed-by: RAHUL BATRA <rbatra at us.ibm.com>
> Reviewed-by: Jennifer A. Stofer <stofer at us.ibm.com>
> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66587
> Reviewed-by: Christian R. Geddes <crgeddes at us.ibm.com>
> Signed-off-by: Prem Shanker Jha <premjha2 at in.ibm.com>
> Signed-off-by: Akshay Adiga <akshay.adiga at linux.vnet.ibm.com>
> Signed-off-by: Pratik Rajesh Sampat <psampat at linux.ibm.com>

Reviewed-by: Vaidyanathan Srinivasan <svaidy at linux.ibm.com>

> 2. The commit also incorporates changes that make STOP API project
> agnostic changes include defining wrapper functions which call legacy
> API. It also adds duplicate enum members which start with prefix PROC
> instead of P9.
> 
> Key_Cronus_Test=PM_REGRESS
> 
> Change-Id: If87970f3e8cf9b507f33eb1be249e03eb3836a5e
> RTC: 201128
> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/71307
> Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot at us.ibm.com>
> Tested-by: Jenkins Server <pfd-jenkins+hostboot at us.ibm.com>
> Tested-by: Hostboot CI <hostboot-ci+hostboot at us.ibm.com>
> Tested-by: Cronus HW CI <cronushw-ci+hostboot at us.ibm.com>
> Reviewed-by: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr at in.ibm.com>
> Reviewed-by: Gregory S. Still <stillgs at us.ibm.com>
> Reviewed-by: Jennifer A Stofer <stofer at us.ibm.com>
> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/71314
> Tested-by: Jenkins OP Build CI <op-jenkins+hostboot at us.ibm.com>
> Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot at us.ibm.com>
> Reviewed-by: Daniel M. Crowell <dcrowell at us.ibm.com>
> Signed-off-by: Prem Shanker Jha <premjha2 at in.ibm.com>
> Signed-off-by: Pratik Rajesh Sampat <psampat at linux.ibm.com>
> ---
>  include/p9_stop_api.H                    |  79 +-
>  libpore/p9_cpu_reg_restore_instruction.H |   4 +
>  libpore/p9_stop_api.C                    | 954 +++++++++++++----------
>  libpore/p9_stop_api.H                    | 115 ++-
>  libpore/p9_stop_data_struct.H            |   4 +-
>  libpore/p9_stop_util.H                   |   7 +-
>  6 files changed, 721 insertions(+), 442 deletions(-)


These code changes are from hcode component copied as is into OPAL
project for integration and use of stop-api.

Hcode component in cooperation with hostboot would be loaded in memory
before OPAL is loaded. This code will allow runtime changes and usage
of various power management save restore functions.

This patch specifically enables self-save feature by the microcode.

--Vaidy