fix(cpus): workaround platforms non-arm interconnect
The workarounds for these below mentioned errata are not implemented
in EL3, but the flags can be enabled/disabled at a platform level
based on arm/non-arm interconnect IP. The ABI helps assist the Kernel
in the process of mitigation for the following errata:
Cortex-A715: erratum 2701951
Neoverse V2: erratum 2719103
Cortex-A710: erratum 2701952
Cortex-X2: erratum 2701952
Neoverse N2: erratum 2728475
Neoverse V1: erratum 2701953
Cortex-A78: erratum 2712571
Cortex-A78AE: erratum 2712574
Cortex-A78C: erratum 2712575
EL3 provides an appropriate return value via errata ABI when the
kernel makes an SMC call using the EM_CPU_ERRATUM_FEATURES FID with the
appropriate erratum ID.
Change-Id: I35bd69d812dba37410dd8bc2bbde20d4955b0850
Signed-off-by: Sona Mathew <SonaRebecca.Mathew@arm.com>
diff --git a/services/std_svc/errata_abi/cpu_errata_info.h b/services/std_svc/errata_abi/cpu_errata_info.h
index ad05724..671a694 100644
--- a/services/std_svc/errata_abi/cpu_errata_info.h
+++ b/services/std_svc/errata_abi/cpu_errata_info.h
@@ -39,11 +39,12 @@
#include <cortex_a9.h>
#endif
-#define MAX_ERRATA_ENTRIES 15
+#define MAX_ERRATA_ENTRIES 16
#define ERRATA_LIST_END (MAX_ERRATA_ENTRIES - 1)
-#define UNDEF_ERRATA {UINT_MAX, UCHAR_MAX, UCHAR_MAX, false}
+/* Default values for unused memory in the array */
+#define UNDEF_ERRATA {UINT_MAX, UCHAR_MAX, UCHAR_MAX, false, false}
#define EXTRACT_PARTNUM(x) ((x >> MIDR_PN_SHIFT) & MIDR_PN_MASK)
@@ -52,7 +53,6 @@
/*
* CPU specific values for errata handling
*/
-
struct em_cpu{
unsigned int em_errata_id;
unsigned char em_rxpx_lo; /* lowest revision of errata applicable for the cpu */