@@ -24,6 +24,16 @@ TFA_SPMD_SPM_AT_SEL2 = "0"
# BL2 loads BL32 (optee). So, optee needs to be built first:
DEPENDS += "optee-os"
+# Note: Regarding the build option: LOG_LEVEL.
+# There seems to be an issue when setting it
+# to 50 (LOG_LEVEL_VERBOSE), where the kernel
+# tee driver sends yielding requests to OP-TEE
+# at a faster pace than OP-TEE processes them,
+# as the processing time is consumed by logging
+# in TF-A. When this issue occurs, booting halts
+# as soon as optee driver starts initialization.
+# Therefore, it's not currently recommended to
+# set LOG_LEVEL to 50 at all.
EXTRA_OEMAKE:append = " \
ARCH=aarch64 \
TARGET_PLATFORM=${TFA_TARGET_PLATFORM} \
@@ -41,5 +51,4 @@ EXTRA_OEMAKE:append = " \
ERRATA_A35_855472=1 \
ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem \
BL32=${RECIPE_SYSROOT}/${nonarch_base_libdir}/firmware/tee-pager_v2.bin \
- LOG_LEVEL=50 \
"
deleted file mode 100644
@@ -1,37 +0,0 @@
-From 555ac46f6f5157741a6fd8f21f74beb1340ed941 Mon Sep 17 00:00:00 2001
-From: Emekcan <emekcan.aras@arm.com>
-Date: Thu, 13 Oct 2022 20:53:42 +0100
-Subject: [PATCH] Adds workaround for cs1k specific bug
-
-Adds a temporary workaround to solve a possible
-race-conditioning issue in the tee driver
-for corstone1000.
-
-Upstream-Status: Inappropriate
-Signed-off-by: Emekcan Aras <emekcan.aras@arm.com>
-Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
----
- drivers/firmware/arm_ffa/driver.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
-index 2109cd178ff7..c15b3a83c720 100644
---- a/drivers/firmware/arm_ffa/driver.c
-+++ b/drivers/firmware/arm_ffa/driver.c
-@@ -32,6 +32,7 @@
- #include <linux/scatterlist.h>
- #include <linux/slab.h>
- #include <linux/uuid.h>
-+#include <linux/delay.h>
-
- #include "common.h"
-
-@@ -282,7 +283,7 @@ static int ffa_msg_send_direct_req(u16 src_id, u16 dst_id, bool mode_32bit,
- {
- u32 req_id, resp_id, src_dst_ids = PACK_TARGET_INFO(src_id, dst_id);
- ffa_value_t ret;
--
-+ msleep(1);
- if (mode_32bit) {
- req_id = FFA_MSG_SEND_DIRECT_REQ;
- resp_id = FFA_MSG_SEND_DIRECT_RESP;
@@ -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', \