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arm-bsp/linux: Add preempt-rt support for fvp-baser-aemv8r64

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Add kernel configuration necessary to build an image with preempt-rt support
for fvp-baser-aemv8r64, together with a build configuration file to build it via
kas.

Update BSP documentation for RT linux support on the machine.

Issue-Id: SCM-2343
Signed-off-by: Richard Neill <richard.neill@arm.com>
Change-Id: I11e3ba3ad7da00db1810c70fa4f98bfffd4b8254
Signed-off-by: Ross Burton <ross.burton@arm.com>
This commit is contained in:
Richard Neill
2021-04-29 09:57:01 +01:00
committed by Ross Burton
parent 18e2967aab
commit 4c3c2fda93
4 changed files with 36 additions and 7 deletions
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kas/fvp-baser-aemv8r64-rt-bsp.yml
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@@ -0,0 +1,8 @@
header:
version: 9
includes:
- fvp-baser-aemv8r64-bsp.yml
local_conf_header:
base: |
PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-rt"
meta-arm-bsp/documentation/fvp-baser-aemv8r64.md
+20 -6
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@@ -17,10 +17,16 @@ Fast Models Fixed Virtual Platforms (FVP) Reference Guide:
https://developer.arm.com/docs/100966/latest https://developer.arm.com/docs/100966/latest
## BSP Support ## BSP Support
The fvp-baser-aemv8r64 Yocto MACHINE supports the following BSP components: The fvp-baser-aemv8r64 Yocto MACHINE supports the following BSP components,
where either a standard or Real-Time Linux kernel (PREEMPT\_RT) can be built
and run:
- boot-wrapper-aarch64 - boot-wrapper-aarch64
- Kernel: linux-yocto-5.10 - Linux kernel: linux-yocto-5.10
- Linux kernel with PREEMPT\_RT support: linux-yocto-rt-5.10
Note that the Real-Time Linux kernel (PREEMPT\_RT) does not use the real-time
architectural extensions of the Armv8-R feature set.
## Quick start: Howto Build and Run ## Quick start: Howto Build and Run
@@ -32,19 +38,27 @@ Install the kas setup tool for bitbake based projects:
https://kas.readthedocs.io/en/latest/userguide.html#dependencies-installation https://kas.readthedocs.io/en/latest/userguide.html#dependencies-installation
### Fetch sources ### Fetch sources
Fetch meta-arm repository: Fetch the meta-arm repository into a build directory:
``` ```
mkdir -p ~/fvp-baser-aemv8r64-bsp mkdir -p ~/fvp-baser-aemv8r64-build
cd ~/fvp-baser-aemv8r64-bsp cd ~/fvp-baser-aemv8r64-build
git clone https://git.yoctoproject.org/git/meta-arm git clone https://git.yoctoproject.org/git/meta-arm
``` ```
### Build ### Build
Building with the standard Linux kernel:
``` ```
cd ~/fvp-baser-aemv8r64-bsp cd ~/fvp-baser-aemv8r64-build
kas build meta-arm/kas/fvp-baser-aemv8r64-bsp.yml kas build meta-arm/kas/fvp-baser-aemv8r64-bsp.yml
``` ```
Building with the Real-Time Linux kernel (PREEMPT\_RT):
```
cd ~/fvp-baser-aemv8r64-build
kas build meta-arm/kas/fvp-baser-aemv8r64-rt-bsp.yml
```
### Run ### Run
To Run the Fixed Virtual Platform simulation tool you must download "Armv8-R To Run the Fixed Virtual Platform simulation tool you must download "Armv8-R
AEM FVP" from Arm developer (This might require the user to register) from this AEM FVP" from Arm developer (This might require the user to register) from this
meta-arm-bsp/recipes-kernel/linux/arm-platforms-kmeta/bsp/arm-platforms/fvp-baser-aemv8r64-preempt-rt.scc
+6
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define KMACHINE fvp-baser-aemv8r64
define KTYPE preempt-rt
define KARCH arm64
include ktypes/preempt-rt/preempt-rt.scc
include fvp-baser-aemv8r64.scc
meta-arm-bsp/recipes-kernel/linux/linux-yocto-rt_%.bbappend
+2 -1
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@@ -1,5 +1,6 @@
# Only enable linux-yocto-rt for n1sdp # Only enable linux-yocto-rt for n1sdp and the Armv8-R AArch64 AEM FVP
LINUX_YOCTO_RT_REQUIRE ?= "" LINUX_YOCTO_RT_REQUIRE ?= ""
LINUX_YOCTO_RT_REQUIRE_n1sdp = "linux-arm-platforms.inc" LINUX_YOCTO_RT_REQUIRE_n1sdp = "linux-arm-platforms.inc"
LINUX_YOCTO_RT_REQUIRE_fvp-baser-aemv8r64 = "linux-arm-platforms.inc"
require ${LINUX_YOCTO_RT_REQUIRE} require ${LINUX_YOCTO_RT_REQUIRE}