feat(nxp/common/errata): add SoC erratum a008850
Add SoC erratum a008850 support.
Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: I1ef41c67737b7b5fdf1d892929a2d8040effc282
diff --git a/plat/nxp/common/soc_errata/errata_a008850.c b/plat/nxp/common/soc_errata/errata_a008850.c
new file mode 100644
index 0000000..e8c0f64
--- /dev/null
+++ b/plat/nxp/common/soc_errata/errata_a008850.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+#include <cci.h>
+#include <common/debug.h>
+#include <ls_interconnect.h>
+#include <mmio.h>
+
+#include <platform_def.h>
+
+void erratum_a008850_early(void)
+{
+ /* part 1 of 2 */
+ uintptr_t cci_base = NXP_CCI_ADDR;
+ uint32_t val = mmio_read_32(cci_base + CTRL_OVERRIDE_REG);
+
+ /* enabling forced barrier termination on CCI400 */
+ mmio_write_32(cci_base + CTRL_OVERRIDE_REG,
+ (val | CCI_TERMINATE_BARRIER_TX));
+
+}
+
+void erratum_a008850_post(void)
+{
+ /* part 2 of 2 */
+ uintptr_t cci_base = NXP_CCI_ADDR;
+ uint32_t val = mmio_read_32(cci_base + CTRL_OVERRIDE_REG);
+
+ /* Clear the BARRIER_TX bit */
+ val = val & ~(CCI_TERMINATE_BARRIER_TX);
+
+ /*
+ * Disable barrier termination on CCI400, allowing
+ * barriers to propagate across CCI
+ */
+ mmio_write_32(cci_base + CTRL_OVERRIDE_REG, val);
+
+ INFO("SoC workaround for Errata A008850 Post-Phase was applied\n");
+}