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Differential D2249

Update devmap to work with arm64
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Authored by andrew on Apr 7 2015, 3:48 PM.
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andrew
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andrew
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ARM
Summary

We can reuse most of devmap on arm64. This updates it to handle this. We
reserve an L2 page (2MiB with 4k granules) for early devices, e.g. the UART.
It also updates the code to handle the different pmap implementations and
memory layout.

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andrew updated this revision to Diff 4720.Apr 7 2015, 3:48 PM
andrew retitled this revision from to Update devmap to work with arm64.
andrew updated this object.
andrew edited the test plan for this revision. (Show Details)
andrew added a reviewer: ARM.
andrew added a subscriber: emaste.
Herald added subscribers: andrew, imp. · View Herald TranscriptApr 7 2015, 3:48 PM
imp added inline comments.Apr 7 2015, 4:03 PM
sys/arm/arm/devmap.c
31–33

I'd update this comment to say this is shared between aarch64 and arm because of the strong expectation that arm/arm/foo is private to arm.

andrew updated this revision to Diff 4731.Apr 7 2015, 10:40 PM

Add a comment on this file being shared

andrew accepted this revision.Apr 13 2015, 1:21 PM
andrew added a reviewer: andrew.
This revision is now accepted and ready to land.Apr 13 2015, 1:21 PM
andrew closed this revision.Apr 13 2015, 1:22 PM

https://svnweb.freebsd.org/changeset/base/281493

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sys/
arm/
arm/
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Diff 4731

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sys/arm/arm/devmap.c

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