[Skiboot] [PATCH v8 3/3] Self save API integration
svaidy at linux.ibm.com
Thu Apr 30 00:08:19 AEST 2020
* Pratik Rajesh Sampat <psampat at linux.ibm.com> [2020-04-23 16:24:38]:
> The commit makes the self save API available outside the firmware by defining
> an OPAL wrapper.
> This wrapper has a similar interface to that of self restore and expects the
> cpu pir, SPR number, minus the value of that SPR to be passed in its
> paramters and returns OPAL_SUCCESS on success. It adds a device-tree
> node signifying support for self-save after verifying the stop API
> version compatibility.
> The commit also documents both the self-save and the self-restore API
> calls along with their working and usage.
> Signed-off-by: Pratik Rajesh Sampat <psampat at linux.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy at linux.ibm.com>
> doc/opal-api/opal-slw-self-save-reg-181.rst | 51 ++++++++++
> doc/opal-api/opal-slw-set-reg-100.rst | 5 +
> doc/power-management.rst | 48 +++++++++
> hw/slw.c | 106 ++++++++++++++++++++
> include/opal-api.h | 3 +-
> include/p9_stop_api.H | 18 ++++
> include/skiboot.h | 3 +
> 7 files changed, 233 insertions(+), 1 deletion(-)
> create mode 100644 doc/opal-api/opal-slw-self-save-reg-181.rst
This patch enables OPAL interface to call stop-api and set self-save.
Basically completes the infrastructure required to use the new
self-save function provided by the microcode.
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