pdata

pdata provides tools and libraries to manage the power system device tree. Also, it contains infrastructure to generate power system device tree and meta-data based on given processor-specific targets and attributes details (the attribute data will be picked from given system mrw xml).

Build Info and Details

attributes tool

The attributes tool is used to manage power system device tree. Please refer here to get more details.

To build:

autoreconf -i
./configure CHIP=p10
make

• Use the CHIP configuration option to build with the required target processor.

Auto-generate files

Tools for auto-generate the meta-data and power system device tree are written in Perl and those tools are dependent with following standard Perl modules so, please install in your build machine.

Dependent Perl modules list:

• XML::LibXML
• XML::Simple
• Getopt::Long
• File::Basename
• Class::Struct
• Digest::MD5
• Data::Dumper
• Math::BigInt
• Carp
• List::Util
• XML::Parser

Meta-Data:

Meta-Data are required to read or write attributes value based on given target from power system cec device tree. So, The below meta-data files are automatically generated by pdata.

• attributes_info.db - Please refer here to get more details.

• attributes_info.H - Please refer here to get more details.

To build:

autoreconf -i
./configure --enable-gen_attrsinfo CHIP=p10
EKB=/path/to/pub-ekb make

• Use the CHIP configuration option to build with the required target processor.

• Use the EKB environment variable to pass cloned pub-ekb repository path to get hwp's attributes xml files.

POWER system cec device tree:

The POWER system cec device tree is used to initialize and boot the POWER server. Please refer here to get more details.

To build:

autoreconf -i
./configure --enable-gen-dynamicdt CHIP=p10
EKB=/path/to/pub-ekb SYSTEMS_MRW_XML=/path/to/rainier-xml/Rainier-2U-MRW.xml make

• Use the CHIP configuration option to build with the required target processor.

• Use the EKB environment variable to pass cloned pub-ekb repository path to get hwp's attributes xml files.

• Use the SYSTEMS_MRW_XML environment variable to pass cloned system mrw xml file path to get system-specific attributes data.

  • The pdata tool will support to generate multiple power system device tree which is all built based on same IBM POWER processor. So, SYSTEMS_MRW_XML can be used to pass multiple systems mrw xml.

    E.g.: SYSTEMS_MRW_XML="/path/to/rainier-xml/Rainier-2U-MRW.xml /path/to/rainier-xml/Rainier-4U-MRW.xml"

Other References:

• To add a new attribute into meta-data and power system device tree, please refer here.

• To add new target into meta-data and power system device tree, please refer here.

• To add a new POWER processor specific meta-data and power system device tree, please refer here.

Support not in place:

• Currently, pdata won't support adding new system specific attribute or target so, if required then need to add support in tools.

• Currently the meta-data and power system device tree generation are based on filter list (attributs and targets) so, need to add support in tools for non-filter based generation.