** Changed in: linux (Ubuntu)
Assignee: Tim Gardner (timg-tpi) => (unassigned)
** Changed in: linux (Ubuntu Yakkety)
Assignee: Tim Gardner (timg-tpi) => (unassigned)
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https://bugs.launchpad.net/bugs/1613750
Title:
[Ubuntu 16.10] powerpc/devtree: Add support for 2 new DRC properties
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Yakkety:
Won't Fix
Bug description:
powerpc/devtree: Add support for 2 new DRC properties to the Ubuntu
distribution for powerpc
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": Bit flags are added to this data structure
by the front end processor to inform the kernel as to whether to expect
the changes to one or both of the device tree structures "ibm,drc-info"
and "ibm,dynamic-memory-v2".
Signed-off-by: Michael Bringmann <[email protected]>
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146536.html
Michael Bringmann (8):
powerpc/firmware: Add definitions for new firmware features.
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146537.html
powerpc/memory: Parse new memory property to register blocks.
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146538.html
powerpc/memory: Parse new memory property to initialize structures.
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146539.html
pseries/hotplug init: Convert new DRC memory property for hotplug runtime
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146540.html
pseries/drc-info: Search new DRC properties for CPU indexes
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146541.html
hotplug/drc-info: Add code to search new devtree properties
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146542.html
powerpc: Check arch.vec earlier during boot for memory features
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146543.html
powerpc: Enable support for new DRC devtree properties
https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-July/146544.html
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