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| author | Soby Mathew <soby.mathew@arm.com> | 2015-09-18 18:12:31 +0100 |
|---|---|---|
| committer | Achin Gupta <achin.gupta@arm.com> | 2015-09-22 18:47:30 +0100 |
| commit | c0335a3526657a764a98dc7c4bbaf0f143b70f61 (patch) | |
| tree | a10eaf93baa8f0a8be93876a9e377955f7f89a85 | |
| parent | 7edb86dabef415b0aae99478a186ef5299d8ee28 (diff) | |
| download | arm-trusted-firmware-rfc/arm_gicv3_driver_v1.tar.gz | |
Add instructions to make Linaro 15.06 release work in GICv3 mode.rfc/arm_gicv3_driver_v1
The Linaro tracking kernel and UEFI do not work OOB in GICv3 mode. This patch
adds instructions to the user-guide.md for changes required to both these
components in order to run them with the GICv3 only driver in ARM TF.
Change-Id: I57aebadfa65566c83a37b2501f43608f1ea77212
| -rw-r--r-- | docs/user-guide.md | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/docs/user-guide.md b/docs/user-guide.md index 1369951a4..753d6330f 100644 --- a/docs/user-guide.md +++ b/docs/user-guide.md @@ -12,6 +12,7 @@ Contents : 7. [Preparing the images to run on FVP](#7--preparing-the-images-to-run-on-fvp) 8. [Running the software on FVP](#8--running-the-software-on-fvp) 9. [Running the software on Juno](#9--running-the-software-on-juno) +10. [Modifications required for running linux in GICv3 mode](#10--modifications-required-for-running-linux-in-gicv3-mode) 1. Introduction @@ -66,9 +67,14 @@ instructions on the [Linaro release notes][Linaro releases], section 2.2 "Downloading the software sources" and section 2.3 "Downloading the filesystem binaries". -Note: Both the LSK kernel or the latest tracking kernel can be used along the +Note 1: Both the LSK kernel or the latest tracking kernel can be used along the ARM Trusted Firmware, choose the one that best suits your needs. +Note 2: Currently to run tracking kernel in GICv3 mode, some modifications are +required to the kernel and UEFI. Refer +[here](#10--modifications-required-for-running-linux-in-gicv3-mode) for more +details. + The Trusted Firmware source code can then be found in the `arm-tf/` directory. This is the full git repository cloned from Github. The revision checked out by the `repo` tool is indicated by the manifest file. Depending on the manifest @@ -1088,6 +1094,25 @@ Please refer to the [Juno Software Guide] to: * Obtain any other Juno software information +10. Modifications required for running linux in GICv3 mode +----------------------------------------------------- + +The linaro tracking kernel includes support for GICv3 by default, but it +crashes during runtime in GICv3 mode due to an incorrect patch which needs to +be removed. Use the `git revert` command to remove the commit with SHA ID +1688ace31903d82dba17cc057a917c4f3ed0a5ce from the linaro tracking kernel. + +Also, the default FVP build of UEFI configures GICv3 in V2 legacy mode. This +can be changed by setting the build flag +`gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy` to FALSE in +`uefi/edk2/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress-FVP-AArch64.dsc`. + +Recompile both kernel and UEFI as mentioned in +[Linaro release notes][Linaro releases], section 2.2. + +The GICv3 DTBs found in ARM Trusted Firmware source directory can be +used to test the GICv3 kernel on the respective FVP models. + - - - - - - - - - - - - - - - - - - - - - - - - - - _Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved._ |