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author | Stewart Smith <stewart@linux.vnet.ibm.com> | 2015-05-21 15:31:13 +1000 |
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committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2015-05-21 15:32:37 +1000 |
commit | e51f45d7c17013fd6c75e5df9c1611e135c211b9 (patch) | |
tree | 12feee74705c8ed0ddb0e4b887e75bbf3b8f8eb3 /doc | |
parent | 806dbb9bd35d01e0a2e94d46e152723a1f6b1a7d (diff) | |
parent | 417333aa73103b3cc05b27df5e4b328fe71dab5f (diff) | |
download | skiboot-e51f45d7c17013fd6c75e5df9c1611e135c211b9.zip skiboot-e51f45d7c17013fd6c75e5df9c1611e135c211b9.tar.gz skiboot-e51f45d7c17013fd6c75e5df9c1611e135c211b9.tar.bz2 |
Merge PRD rework from stable
Diffstat (limited to 'doc')
-rw-r--r-- | doc/device-tree/ibm,opal/diagnostics.txt | 10 | ||||
-rw-r--r-- | doc/device-tree/reserved-memory.txt | 30 |
2 files changed, 40 insertions, 0 deletions
diff --git a/doc/device-tree/ibm,opal/diagnostics.txt b/doc/device-tree/ibm,opal/diagnostics.txt new file mode 100644 index 0000000..14da91c --- /dev/null +++ b/doc/device-tree/ibm,opal/diagnostics.txt @@ -0,0 +1,10 @@ + +ibm,opal/diagnostics device tree entries +---------------------------------- + +The diagnostics node under ibm,opal describes a userspace-to-firmware +interface, supporting the runtime processor recovery diagnostics functions. + +The properties of a prd node are: + + compatible = "ibm,opal-prd" diff --git a/doc/device-tree/reserved-memory.txt b/doc/device-tree/reserved-memory.txt new file mode 100644 index 0000000..ff0d6a4 --- /dev/null +++ b/doc/device-tree/reserved-memory.txt @@ -0,0 +1,30 @@ +reserved-memory device tree nodes + +OPAL exposes reserved memory through a top-level reserved-memory node, +containing subnodes that represent each reserved memory region. + +This follows the Linux specification for the /reserved-memory node, +described in the kernel source tree, in: + + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt + +The top-level /reserved-memory node contains: + + #size-cells = <2> + #address-cells = <2> + - addresses and sizes are all 64-bits + + ranges; + - the empty ranges node indicates no translation of physical + addresses in the subnodes. + +The sub-nodes under the /reserved-memory node contain: + + reg = <address size> + - the address and size of the reserved memory region. The address + and size values are two cells each, as signified by the top-level + #{address,size}-cells + + ibm,prd-label = "string" + - a string token for use by the prd system. Specific ranges may be + used by prd - those will be referenced by this label. |