remoteproc/k3-r5: initialize TCM memories for ECC

[rpmsg/rpmsg.git] / drivers / remoteproc / ti_k3_r5_remoteproc.c

diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 2664ba29f61ecc88a4dcaca7a6131db6bca9eb7c..3d993ec1f5ea3bb8c90ef5b1a71c22dc632b1a82 100644 (file)
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -379,6 +379,17 @@ static int k3_r5_rproc_prepare(struct rproc *rproc)
                dev_err(dev, "unable to enable cores for TCM loading, ret = %d\n",
                        ret);
 
+       /*
+        * Zero out both TCMs unconditionally (access from v8 Arm core is not
+        * affected by ATCM & BTCM enable configuration values) so that ECC
+        * can be effective on all TCM addresses.
+        */
+       dev_dbg(dev, "zeroing out ATCM memory\n");
+       memset(core->mem[0].cpu_addr, 0x00, core->mem[0].size);
+
+       dev_dbg(dev, "zeroing out BTCM memory\n");
+       memset(core->mem[1].cpu_addr, 0x00, core->mem[1].size);
+
        return ret;
 }