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| author | Alistair Delva <adelva@google.com> | 2021-02-16 21:01:22 +0000 |
|---|---|---|
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2021-02-16 21:01:22 +0000 |
| commit | efb2826bb8160e2d8e0fcec85133a7468484f9fd (patch) | |
| tree | 37a21c69306801ee7cdda5167a30896c8740155b /docs/components/debugfs-design.rst | |
| parent | b00a71fc312c9781fa6f404dccfb55b062b2ccac (diff) | |
| parent | faa476c0caaa598afa5a6109d17102db5fe35ec6 (diff) | |
| download | platform_external_arm-trusted-firmware-master.tar.gz platform_external_arm-trusted-firmware-master.tar.bz2 platform_external_arm-trusted-firmware-master.zip | |
Merge branch 'aosp/upstream-master' into HEAD am: faa476c0caHEADandroid-s-beta-5android-s-beta-4android-s-beta-3android-s-beta-2android-s-beta-1mastermain-cg-testing-releaseandroid-s-beta-5android-s-beta-4
Original change: https://android-review.googlesource.com/c/platform/external/arm-trusted-firmware/+/1589611
MUST ONLY BE SUBMITTED BY AUTOMERGER
Change-Id: I3a25534ceed4f8e188510641080d8b8ed49b8f62
Diffstat (limited to 'docs/components/debugfs-design.rst')
| -rw-r--r-- | docs/components/debugfs-design.rst | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/docs/components/debugfs-design.rst b/docs/components/debugfs-design.rst index 06916f3d9..253651513 100644 --- a/docs/components/debugfs-design.rst +++ b/docs/components/debugfs-design.rst @@ -15,8 +15,9 @@ Virtual filesystem ------------------ The core functionality lies in a virtual file system based on a 9p file server -interface (`Notes on the Plan 9 Kernel Source`_). The implementation permits -exposing virtual files, firmware drivers, and file blobs. +interface (`Notes on the Plan 9 Kernel Source`_ and +`Linux 9p remote filesystem protocol`_). +The implementation permits exposing virtual files, firmware drivers, and file blobs. Namespace ~~~~~~~~~ @@ -77,10 +78,10 @@ SMC interface ------------- The communication with the 9p layer in BL31 is made through an SMC conduit -(`SMC Calling Convention PDD`_), using a specific SiP Function Id. An NS shared -buffer is used to pass path string parameters, or e.g. to exchange data on a -read operation. Refer to `ARM SiP Services`_ for a description of the SMC -interface. +(`SMC Calling Convention`_), using a specific SiP Function Id. An NS +shared buffer is used to pass path string parameters, or e.g. to exchange +data on a read operation. Refer to :ref:`ARM SiP Services <arm sip services>` +for a description of the SMC interface. Security considerations ----------------------- @@ -114,19 +115,11 @@ The SMC interface is accessible from an NS environment, that is: - a Linux kernel driver running at NS-EL1 - a Linux userspace application through the kernel driver -References ----------- - -.. [#] `SMC Calling Convention PDD`_ -.. [#] `Notes on the Plan 9 Kernel Source`_ -.. [#] `Linux 9p remote filesystem protocol`_ -.. [#] `ARM SiP Services`_ - -------------- -*Copyright (c) 2019, Arm Limited and Contributors. All rights reserved.* +*Copyright (c) 2019-2020, Arm Limited and Contributors. All rights reserved.* -.. _SMC Calling Convention PDD: http://infocenter.arm.com/help/topic/com.arm.doc.den0028b/ +.. _SMC Calling Convention: https://developer.arm.com/docs/den0028/latest .. _Notes on the Plan 9 Kernel Source: http://lsub.org/who/nemo/9.pdf .. _Linux 9p remote filesystem protocol: https://www.kernel.org/doc/Documentation/filesystems/9p.txt .. _ARM SiP Services: arm-sip-service.rst |