Messages in this thread | | | Date | Tue, 1 Nov 2005 20:23:29 +1100 | From | Paul Mackerras <> | Subject | Re: [PATCH] tpm: support PPC64 hardware |
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Kylene Jo Hall writes:
> The TPM is discovered differently on PPC64 because the device must be > discovered through the device tree in order to open the proper holes in > the io_page_mask for reading and writing in the low memory space. This > does not happen automatically like most devices because the tpm is not a > normal pci device and lives under the root node.
Please just do an ioremap on the physical address and use read[bwl]/write[bwl] or ioread{8,16,32}/iowrite{8,16,32}, or else persuade the firmware developers to put the tpm in the right place in the device tree.
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