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arm-bsp/linux-yocto: corstone1000: add external system control support

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add support for the remoteproc control feature for the external system

With this feature we can switch on/off the external system on demand:

echo stop > /sys/class/remoteproc/remoteproc0/state
echo start > /sys/class/remoteproc/remoteproc0/state

During Linux boot the remoteproc subsystem automatically start
the external system. The user can use the commands above to
stop then start the remote core.

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Abdellatif El Khlifi
2024-04-26 16:20:14 +01:00
committed by Jon Mason
parent 41a848cc93
commit 31de2fada2
5 changed files with 644 additions and 0 deletions
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meta-arm-bsp/recipes-kernel/linux/linux-arm-platforms.inc
+7
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@@ -37,6 +37,13 @@ SRC_URI:append:corstone1000 = " ${@bb.utils.contains('MACHINE_FEATURES', \
'', \
d)}"
SRC_URI:append:corstone1000 = " \
file://extsys.cfg \
file://0001-remoteproc-Add-Arm-remoteproc-driver.patch \
file://0002-arm64-dts-Add-corstone1000-external-system-device-no.patch \
file://0003-dt-bindings-remoteproc-Add-Arm-remoteproc.patch \
"
# Default kernel features not needed for corstone1000
# otherwise the extra kernel modules will increase the rootfs size
# corstone1000 has limited flash memory constraints