Neoverse N1 Errata Workaround 1542419
Coherent I-cache is causing a prefetch violation where when the core
executes an instruction that has recently been modified, the core might
fetch a stale instruction which violates the ordering of instruction
fetches.
The workaround includes an instruction sequence to implementation
defined registers to trap all EL0 IC IVAU instructions to EL3 and a trap
handler to execute a TLB inner-shareable invalidation to an arbitrary
address followed by a DSB.
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Change-Id: Ic3b7cbb11cf2eaf9005523ef5578a372593ae4d6
diff --git a/include/lib/cpus/aarch64/neoverse_n1.h b/include/lib/cpus/aarch64/neoverse_n1.h
index f90aa2e..fa733ce 100644
--- a/include/lib/cpus/aarch64/neoverse_n1.h
+++ b/include/lib/cpus/aarch64/neoverse_n1.h
@@ -12,6 +12,9 @@
/* Neoverse N1 MIDR for revision 0 */
#define NEOVERSE_N1_MIDR U(0x410fd0c0)
+/* Exception Syndrome register EC code for IC Trap */
+#define NEOVERSE_N1_EC_IC_TRAP U(0x1f)
+
/*******************************************************************************
* CPU Power Control register specific definitions.
******************************************************************************/