drivers: crypto: hash: add cache invalidate after HW triggered

Add cache invalidate after HW triggered to insure getting
correct data from DRAM.

Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
Change-Id: Iec324686e381445c63eb9d12de269a9fb17c4728

drivers/crypto/hash_aspeed.c

@@ -10,6 +10,7 @@
 #include <crypto/hash.h>
 #include <logging/log.h>
 #include <sys/byteorder.h>
+#include <cache.h>
 
 #include "hace_aspeed.h"
 #include "hash_aspeed_priv.h"
@@ -105,6 +106,7 @@ static void aspeed_ahash_fill_padding(struct aspeed_hash_ctx *ctx,
 static int hash_trigger(struct aspeed_hash_ctx *data, int len)
 {
 	struct hace_register_s *hace_register = hace_eng.base;
+	int ret;
 
 	if (hace_register->hace_sts.fields.hash_engine_sts) {
 		LOG_ERR("HACE error: engine busy\n");
@@ -124,7 +126,11 @@ static int hash_trigger(struct aspeed_hash_ctx *data, int len)
 	hace_register->hash_data_len.value = len;
 	hace_register->hash_cmd_reg.value = data->method;
 
-	return aspeed_hash_wait_completion(3000);
+	ret = aspeed_hash_wait_completion(3000);
+
+	cache_data_range(data->digest, 64, K_CACHE_INVD);
+
+	return ret;
 }
 
 static int aspeed_hash_update(struct hash_ctx *ctx, struct hash_pkt *pkt)