[PATCH V9 0/8] powerpc/devtree: Add support for 2 new DRC properties
Michael Bringmann
mwb at linux.vnet.ibm.com
Wed Jan 25 06:41:41 AEDT 2017
Ping
On 12/07/2016 01:13 AM, Michael Bringmann wrote:
> Several properties in the DRC device tree format are replaced by
> more compact representations to allow, for example, for the encoding
> of vast amounts of memory, and or reduced duplication of information
> in related data structures.
>
> "ibm,drc-info": This property, when present, replaces the following
> four properties: "ibm,drc-indexes", "ibm,drc-names", "ibm,drc-types"
> and "ibm,drc-power-domains". This property is defined for all
> dynamically reconfigurable platform nodes. The "ibm,drc-info" elements
> are intended to provide a more compact representation, and reduce some
> search overhead.
>
> "ibm,dynamic-memory-v2": This property replaces the "ibm,dynamic-memory"
> node representation within the "ibm,dynamic-reconfiguration-memory"
> property provided by the BMC. This element format is intended to provide
> a more compact representation of memory, especially, for systems with
> massive amounts of RAM. To simplify portability, this property is
> converted to the "ibm,dynamic-memory" property during system boot.
>
> "ibm,architecture.vec": Bidirectional communication mechanism between
> the host system and the front end processor indicating what features
> the host system supports and what features the front end processor will
> actually provide. In this case, we are indicating that the host system
> can support the new device tree structures "ibm,drc-info" and
> "ibm,dynamic-memory-v2".
>
> Signed-off-by: Michael Bringmann <mwb at linux.vnet.ibm.com>
>
> Michael Bringmann (8):
> powerpc/firmware: Add definitions for new firmware features.
> powerpc/memory: Parse new memory property to register blocks.
> powerpc/memory: Parse new memory property to initialize structures.
> pseries/hotplug init: Convert new DRC memory property for hotplug runtime
> pseries/drc-info: Search new DRC properties for CPU indexes
> hotplug/drc-info: Add code to search new devtree properties
> powerpc: Check arch.vec earlier during boot for memory features
> powerpc: Enable support for new DRC devtree properties
> ---
> Changes in V9:
> -- Various code cleanup measures
>
> arch/powerpc/include/asm/firmware.h | 5 -
> arch/powerpc/include/asm/prom.h | 38 ++++
> arch/powerpc/kernel/prom.c | 103 ++++++++++--
> arch/powerpc/kernel/prom_init.c | 3
> arch/powerpc/mm/numa.c | 168 ++++++++++++++++---
> arch/powerpc/platforms/pseries/firmware.c | 2
> arch/powerpc/platforms/pseries/pseries_energy.c | 202 ++++++++++++++++++++---
> drivers/pci/hotplug/rpadlpar_core.c | 13 +
> drivers/pci/hotplug/rpaphp.h | 4
> drivers/pci/hotplug/rpaphp_core.c | 108 +++++++++---
> 10 files changed, 543 insertions(+), 103 deletions(-)
>
>
--
Michael W. Bringmann
Linux Technology Center
IBM Corporation
Tie-Line 363-5196
External: (512) 286-5196
Cell: (512) 466-0650
mwb at linux.vnet.ibm.com
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