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Diffstat (limited to 'roms/skiboot/doc/device-tree/ibm,opal/firmware.rst')
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diff --git a/roms/skiboot/doc/device-tree/ibm,opal/firmware.rst b/roms/skiboot/doc/device-tree/ibm,opal/firmware.rst new file mode 100644 index 000000000..5e76199ec --- /dev/null +++ b/roms/skiboot/doc/device-tree/ibm,opal/firmware.rst @@ -0,0 +1,44 @@ +System Firmware +=============== + +The 'firmware' node under 'ibm,opal' lists system and OPAL firmware version. + +.. code-block:: dts + + firmware { + symbol-map = <0x0 0x300ac650 0x0 0x1b3f5>; + compatible = "ibm,opal-firmware"; + ml-version = [4d 4c 20 46 57 37 37 30 2e 32 30 20 46 57 37 37 30 2e 32 30 20 46 57 37 37 30 2e 32 30]; + mi-version = <0x4d49205a 0x4c373730 0x5f303735 0x205a4c37 0x37305f30 0x3735205a 0x4c373730 0x5f303735>; + version = "skiboot-5.0-rc2"; + phandle = <0x8e>; + linux,phandle = <0x8e>; + }; + +``compatible`` + property describes OPAL compatibility. + +``symbol-map`` + property describes OPAL symbol start address and size. + +``version`` + property describes OPAL version. It replaced a property named 'git-id' early + in the POWER8 lifecycle, so may not always be present. It will be absent on + IBM FSP based systems running firmware prior to FW840. The 'version' property + is present on all GA POWER8 BMC systems. + + On POWER9 and above, it is always present. + +``mi-version`` + property describes Microcode Image. Only on IBM FSP systems. + Will (likely) not be present on POWER9 systems. + +``ml-version`` + property describes Microcode Level. Only on IBM FSP systems. + Will (likely) not be present on POWER9 systems. + +MI/ML format +------------ +:: + + <ML/MI> <T side version> <P side version> <boot side version> |