feat(ti): set snoop-delayed exclusive handling on A72 cores
Snoop requests should not be responded to during atomic operations. This
can be handled by the interconnect using its global monitor or by the
core's SCU delaying to check for the corresponding atomic monitor state.
TI SoCs take the second approach. Set the snoop-delayed exclusive handling
bit to inform the core it needs to delay responses to perform this check.
As J784s4 is currently the only SoC with multiple A72 clusters, limit
this delay to only that device.
Signed-off-by: Andrew Davis <afd@ti.com>
Change-Id: I875f64e4f53d47a9a0ccbf3415edc565be7f84d9
diff --git a/plat/ti/k3/board/j784s4/board.mk b/plat/ti/k3/board/j784s4/board.mk
index c7fcb00..68ba1b5 100644
--- a/plat/ti/k3/board/j784s4/board.mk
+++ b/plat/ti/k3/board/j784s4/board.mk
@@ -21,6 +21,10 @@
K3_DATA_RAM_4_LATENCY := 1
$(eval $(call add_define,K3_DATA_RAM_4_LATENCY))
+# Delay snoop exclusive handling for J784s4
+K3_EXCLUSIVE_SNOOP_DELAY := 1
+$(eval $(call add_define,K3_EXCLUSIVE_SNOOP_DELAY))
+
# System coherency is managed in hardware
USE_COHERENT_MEM := 1