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hdata/memory: Add memory reservations to the DT
Currently we just add these to a list of pre-boot reserved regions which is then converted into a the contents of the /reserved-memory/ node just before Skiboot jumps into the firmware kernel. This approach is insufficent because we need to add the ibm,prd-instance labels to the various hostboot reserved regions. To do this we want to create these resevation nodes inside the HDAT parser rather than having the mem_region flattening code handle it. On P8 systems Hostboot placed its memory reservations under the /ibm,hostboot/ node and this patch makes the HDAT parser do the same. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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