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

source/trusted-firmware/trusted-firmware-a-2.8/plat/imx/common/imx8_topology.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <plat/common/platform.h>
+
+const unsigned char imx_power_domain_tree_desc[] = {
+	PWR_DOMAIN_AT_MAX_LVL,
+	PLATFORM_CLUSTER_COUNT,
+	PLATFORM_CLUSTER0_CORE_COUNT,
+	PLATFORM_CLUSTER1_CORE_COUNT,
+};
+
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	return imx_power_domain_tree_desc;
+}
+
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+
+	if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+		return -1;
+
+	cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
+	cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
+
+	if (cluster_id > PLATFORM_CLUSTER_COUNT ||
+		cpu_id > PLATFORM_MAX_CPU_PER_CLUSTER)
+		return -1;
+
+	return (cpu_id + (cluster_id * 4));
+}