GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/plat/marvell/armada/common/marvell_cci.c

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <drivers/arm/cci.h>
+
+#include <plat_marvell.h>
+
+static const int cci_map[] = {
+	PLAT_MARVELL_CCI_CLUSTER0_SL_IFACE_IX,
+	PLAT_MARVELL_CCI_CLUSTER1_SL_IFACE_IX
+};
+
+/****************************************************************************
+ * The following functions are defined as weak to allow a platform to override
+ * the way ARM CCI driver is initialised and used.
+ ****************************************************************************
+ */
+#pragma weak plat_marvell_interconnect_init
+#pragma weak plat_marvell_interconnect_enter_coherency
+#pragma weak plat_marvell_interconnect_exit_coherency
+
+
+/****************************************************************************
+ * Helper function to initialize ARM CCI driver.
+ ****************************************************************************
+ */
+void plat_marvell_interconnect_init(void)
+{
+	cci_init(PLAT_MARVELL_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
+}
+
+/****************************************************************************
+ * Helper function to place current master into coherency
+ ****************************************************************************
+ */
+void plat_marvell_interconnect_enter_coherency(void)
+{
+	cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}
+
+/****************************************************************************
+ * Helper function to remove current master from coherency
+ ****************************************************************************
+ */
+void plat_marvell_interconnect_exit_coherency(void)
+{
+	cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}