refactor(cpus): move errata check to common code
This patch centralizes some of the Errata ABI code
that could be used for checking if an Errata has been applied
to cpu library since the function is mostly generic.
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I2c6d4468f7125d4d99ccdebc5ea8f9e4390360cc
diff --git a/lib/cpus/errata_common.c b/lib/cpus/errata_common.c
index 0530647..7ecdebf 100644
--- a/lib/cpus/errata_common.c
+++ b/lib/cpus/errata_common.c
@@ -6,6 +6,8 @@
/* Runtime C routines for errata workarounds and common routines */
+#include <assert.h>
+
#include <arch.h>
#include <arch_helpers.h>
#include <cortex_a75.h>
@@ -26,6 +28,31 @@
#include <neoverse_n3.h>
#include <neoverse_v3.h>
+struct erratum_entry *find_erratum_entry(uint32_t errata_id)
+{
+ struct cpu_ops *cpu_ops;
+ struct erratum_entry *entry, *end;
+
+ cpu_ops = get_cpu_ops_ptr();
+ assert(cpu_ops != NULL);
+
+ entry = cpu_ops->errata_list_start;
+ assert(entry != NULL);
+
+ end = cpu_ops->errata_list_end;
+ assert(end != NULL);
+
+ end--; /* point to the last erratum entry of the queried cpu */
+
+ while ((entry <= end)) {
+ if (entry->id == errata_id) {
+ return entry;
+ }
+ entry += 1;
+ }
+ return NULL;
+}
+
bool check_if_trbe_disable_affected_core(void)
{
switch (EXTRACT_PARTNUM(read_midr())) {