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arm-bsp/corstone1000: Remove inappropriate kernel delay patch

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When booting, the tee driver from kernel side
invokes a yielding call to OP-TEE, which gets
stuck because OP-TEE never sends Done response:
OPTEE_FFA_YIELDING_CALL_RETURN_DONE
This issue was previously resolved by introducing
an inappropriate patch to the kernel with 1 ms delay
in ffa_msg_send_direct_req.
Further investigation proved that OP-TEE doesn't
get enough processing time and is constantly interrupted
by the kernel requests. To remove this patch, TF-A logging
level is lowered to default (40 in debug builds and
20 in release builds), which eliminates the time consumed
previously by TF-A VERBOSE logs (giving OP-TEE more
processing time).

Signed-off-by: Mariam Elshakfy <mariam.elshakfy@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Mariam Elshakfy
2023-11-09 15:48:27 +00:00
committed by Jon Mason
parent a703cdf09b
commit eb49bb6ea2
3 changed files with 10 additions and 39 deletions
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meta-arm-bsp/recipes-kernel/linux/linux-arm-platforms.inc
-1
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@@ -30,7 +30,6 @@ LINUX_KERNEL_TYPE:corstone1000 = "standard"
KERNEL_EXTRA_ARGS:corstone1000 += "CONFIG_INITRAMFS_COMPRESSION_NONE=y"
SRC_URI:append:corstone1000 = " \
file://defconfig \
file://0002-Adds-workaround-for-cs1k-specific-bug.patch \
"
SRC_URI:append:corstone1000 = " ${@bb.utils.contains('MACHINE_FEATURES', \