33 lines
1,018 B
ReStructuredText
33 lines
1,018 B
ReStructuredText
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reserved-memory device tree nodes
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=================================
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OPAL exposes reserved memory through a top-level reserved-memory node,
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containing subnodes that represent each reserved memory region.
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This follows the Linux specification for the /reserved-memory node,
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described in the kernel source tree, in:
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Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
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The top-level /reserved-memory node contains: ::
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#size-cells = <2>
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#address-cells = <2>
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Addresses and sizes are all 64-bits.
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``ranges``
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the empty ranges node indicates no translation of physical
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addresses in the subnodes.
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The sub-nodes under the /reserved-memory node contain:
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``reg = <address size>``
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the address and size of the reserved memory region. The address
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and size values are two cells each, as signified by the top-level
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``#{address,size}-cells``
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``ibm,prd-label = "string"``
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a string token for use by the prd system. Specific ranges may be
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used by prd - those will be referenced by this label.
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