[PATCH v4 00/25] Add FADump support on PowerNV platform

Hari Bathini hbathini at linux.ibm.com
Tue Jul 16 21:31:53 AEST 2019

Firmware-Assisted Dump (FADump) is currently supported only on pSeries
platform. This patch series adds support for PowerNV platform too.

The first few patches refactor the FADump code to make use of common
code across multiple platforms. Then basic FADump support is added for
PowerNV platform. Followed by patches to honour reserved-ranges DT node
while reserving/releasing memory used by FADump. The subsequent patch
processes CPU state data provided by firmware to create and append core
notes to the ELF core file and the next patch adds support to preserve
crash data for subsequent boots (useful in cases like petitboot). The
subsequent patches add support to export opalcore. opalcore makes
debugging of failures in OPAL code easier. Firmware-Assisted Dump
documentation is also updated appropriately.

The patch series is tested with the latest firmware plus the below skiboot
changes for MPIPL support:

    ("MPIPL support")

Changes in v4:
  * Split the patches.
  * Rebased to latest upstream kernel version.
  * Updated according to latest OPAL changes.


Hari Bathini (25):
      powerpc/fadump: move internal macros/definitions to a new header
      powerpc/fadump: move internal code to a new file
      powerpc/fadump: Improve fadump documentation
      pseries/fadump: move rtas specific definitions to platform code
      pseries/fadump: introduce callbacks for platform specific operations
      pseries/fadump: define register/un-register callback functions
      pseries/fadump: move out platform specific support from generic code
      powerpc/fadump: use FADump instead of fadump for how it is pronounced
      opal: add MPIPL interface definitions
      powernv/fadump: add fadump support on powernv
      powernv/fadump: register kernel metadata address with opal
      powernv/fadump: define register/un-register callback functions
      powernv/fadump: support copying multiple kernel memory regions
      powernv/fadump: process the crashdump by exporting it as /proc/vmcore
      powerpc/fadump: Update documentation about OPAL platform support
      powerpc/fadump: consider reserved ranges while reserving memory
      powerpc/fadump: consider reserved ranges while releasing memory
      powernv/fadump: process architected register state data provided by firmware
      powernv/fadump: add support to preserve crash data on FADUMP disabled kernel
      powerpc/fadump: update documentation about CONFIG_PRESERVE_FA_DUMP
      powernv/opalcore: export /sys/firmware/opal/core for analysing opal crashes
      powernv/fadump: Warn before processing partial crashdump
      powernv/opalcore: provide an option to invalidate /sys/firmware/opal/core file
      powernv/fadump: consider f/w load area
      powernv/fadump: update documentation about option to release opalcore

 Documentation/powerpc/firmware-assisted-dump.txt |  224 +++-
 arch/powerpc/Kconfig                             |   23 
 arch/powerpc/include/asm/fadump.h                |  190 ----
 arch/powerpc/include/asm/opal-api.h              |   50 +
 arch/powerpc/include/asm/opal.h                  |    6 
 arch/powerpc/kernel/Makefile                     |    6 
 arch/powerpc/kernel/fadump-common.c              |  153 +++
 arch/powerpc/kernel/fadump-common.h              |  203 ++++
 arch/powerpc/kernel/fadump.c                     | 1181 ++++++++--------------
 arch/powerpc/kernel/prom.c                       |    4 
 arch/powerpc/platforms/powernv/Makefile          |    3 
 arch/powerpc/platforms/powernv/opal-call.c       |    3 
 arch/powerpc/platforms/powernv/opal-core.c       |  637 ++++++++++++
 arch/powerpc/platforms/powernv/opal-fadump.c     |  671 ++++++++++++
 arch/powerpc/platforms/powernv/opal-fadump.h     |  154 +++
 arch/powerpc/platforms/pseries/Makefile          |    1 
 arch/powerpc/platforms/pseries/rtas-fadump.c     |  595 +++++++++++
 arch/powerpc/platforms/pseries/rtas-fadump.h     |  123 ++
 18 files changed, 3231 insertions(+), 996 deletions(-)
 create mode 100644 arch/powerpc/kernel/fadump-common.c
 create mode 100644 arch/powerpc/kernel/fadump-common.h
 create mode 100644 arch/powerpc/platforms/powernv/opal-core.c
 create mode 100644 arch/powerpc/platforms/powernv/opal-fadump.c
 create mode 100644 arch/powerpc/platforms/powernv/opal-fadump.h
 create mode 100644 arch/powerpc/platforms/pseries/rtas-fadump.c
 create mode 100644 arch/powerpc/platforms/pseries/rtas-fadump.h

More information about the Linuxppc-dev mailing list