Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 123 insertions, 0 deletions

diff --git a/plat/arm/board/fvp/fvp_topology.c b/plat/arm/board/fvp/fvp_topology.c
new file mode 100644
index 0000000..971e35b
--- /dev/null
+++ b/plat/arm/board/fvp/fvp_topology.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2013-2023, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <arch.h>
+#include <drivers/arm/fvp/fvp_pwrc.h>
+#include <fconf_hw_config_getter.h>
+#include <lib/cassert.h>
+#include <plat/arm/common/arm_config.h>
+#include <plat/arm/common/plat_arm.h>
+#include <plat/common/platform.h>
+
+#include <platform_def.h>
+
+/* The FVP power domain tree descriptor */
+static unsigned char fvp_power_domain_tree_desc[FVP_CLUSTER_COUNT + 2];
+
+
+CASSERT(((FVP_CLUSTER_COUNT > 0) && (FVP_CLUSTER_COUNT <= 256)),
+			assert_invalid_fvp_cluster_count);
+
+/*******************************************************************************
+ * This function dynamically constructs the topology according to cpu-map node
+ * in HW_CONFIG dtb and returns it.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	unsigned int i;
+	uint32_t cluster_count, cpus_per_cluster;
+
+	/*
+	 * fconf APIs are not supported for RESET_TO_SP_MIN, RESET_TO_BL31 and
+	 * RESET_TO_BL2 systems.
+	 */
+#if RESET_TO_SP_MIN || RESET_TO_BL31 || RESET_TO_BL2
+	cluster_count = FVP_CLUSTER_COUNT;
+	cpus_per_cluster = FVP_MAX_CPUS_PER_CLUSTER * FVP_MAX_PE_PER_CPU;
+#else
+	cluster_count = FCONF_GET_PROPERTY(hw_config, topology, plat_cluster_count);
+	cpus_per_cluster = FCONF_GET_PROPERTY(hw_config, topology, cluster_cpu_count);
+	/* Several FVP Models use the same blanket dts. Ex: FVP_Base_Cortex-A65x4
+	 * and FVP_Base_Cortex-A65AEx8 both use same dts but have different number of
+	 * CPUs in the cluster, as reflected by build flags FVP_MAX_CPUS_PER_CLUSTER.
+	 * Take the minimum of two to ensure PSCI functions do not exceed the size of
+	 * the PSCI data structures allocated at build time.
+	 */
+	cpus_per_cluster = MIN(cpus_per_cluster,
+			(uint32_t)(FVP_MAX_CPUS_PER_CLUSTER * FVP_MAX_PE_PER_CPU));
+
+#endif
+
+	assert(cluster_count > 0U);
+	assert(cpus_per_cluster > 0U);
+
+	/*
+	 * The highest level is the system level. The next level is constituted
+	 * by clusters and then cores in clusters.
+	 */
+	fvp_power_domain_tree_desc[0] = 1;
+	fvp_power_domain_tree_desc[1] = (unsigned char)cluster_count;
+
+	for (i = 0; i < cluster_count; i++)
+		fvp_power_domain_tree_desc[i + 2] = (unsigned char)cpus_per_cluster;
+
+	return fvp_power_domain_tree_desc;
+}
+
+/*******************************************************************************
+ * This function returns the core count within the cluster corresponding to
+ * `mpidr`.
+ ******************************************************************************/
+unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
+{
+	return FVP_MAX_CPUS_PER_CLUSTER;
+}
+
+/*******************************************************************************
+ * This function implements a part of the critical interface between the psci
+ * generic layer and the platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index. An error code (-1) is returned
+ * in case the MPIDR is invalid.
+ ******************************************************************************/
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int clus_id, cpu_id, thread_id;
+
+	/* Validate affinity fields */
+	if ((arm_config.flags & ARM_CONFIG_FVP_SHIFTED_AFF) != 0U) {
+		thread_id = MPIDR_AFFLVL0_VAL(mpidr);
+		cpu_id = MPIDR_AFFLVL1_VAL(mpidr);
+		clus_id = MPIDR_AFFLVL2_VAL(mpidr);
+	} else {
+		thread_id = 0;
+		cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
+		clus_id = MPIDR_AFFLVL1_VAL(mpidr);
+	}
+
+	if (clus_id >= FVP_CLUSTER_COUNT)
+		return -1;
+	if (cpu_id >= FVP_MAX_CPUS_PER_CLUSTER)
+		return -1;
+	if (thread_id >= FVP_MAX_PE_PER_CPU)
+		return -1;
+
+	if (fvp_pwrc_read_psysr(mpidr) == PSYSR_INVALID)
+		return -1;
+
+	/*
+	 * Core position calculation for FVP platform depends on the MT bit in
+	 * MPIDR. This function cannot assume that the supplied MPIDR has the MT
+	 * bit set even if the implementation has. For example, PSCI clients
+	 * might supply MPIDR values without the MT bit set. Therefore, we
+	 * inject the current PE's MT bit so as to get the calculation correct.
+	 * This of course assumes that none or all CPUs on the platform has MT
+	 * bit set.
+	 */
+	mpidr |= (read_mpidr_el1() & MPIDR_MT_MASK);
+	return (int) plat_arm_calc_core_pos(mpidr);
+}