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Soby Mathew47e43f22016-02-01 14:04:34 +00001/*
2 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
3 *
dp-armfa3cf0b2017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Soby Mathew47e43f22016-02-01 14:04:34 +00005 */
6
7#include <arm_def.h>
8#include <plat_arm.h>
9#include "juno_def.h"
10
11/*
12 * On Juno, the system power level is the highest power level.
13 * The first entry in the power domain descriptor specifies the
14 * number of system power domains i.e. 1.
15 */
16#define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT
17
18/*
19 * The Juno power domain tree descriptor. The cluster power domains
20 * are arranged so that when the PSCI generic code creates the power
21 * domain tree, the indices of the CPU power domain nodes it allocates
22 * match the linear indices returned by plat_core_pos_by_mpidr()
23 * i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher
24 * indices for CLUSTER0 CPUs.
25 */
26const unsigned char juno_power_domain_tree_desc[] = {
27 /* No of root nodes */
28 JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL,
29 /* No of children for the root node */
30 JUNO_CLUSTER_COUNT,
31 /* No of children for the first cluster node */
32 JUNO_CLUSTER1_CORE_COUNT,
33 /* No of children for the second cluster node */
34 JUNO_CLUSTER0_CORE_COUNT
35};
36
37/*******************************************************************************
38 * This function returns the Juno topology tree information.
39 ******************************************************************************/
40const unsigned char *plat_get_power_domain_tree_desc(void)
41{
42 return juno_power_domain_tree_desc;
43}
44
45/*******************************************************************************
46 * This function returns the core count within the cluster corresponding to
47 * `mpidr`.
48 ******************************************************************************/
49unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
50{
51 return (((mpidr) & 0x100) ? JUNO_CLUSTER1_CORE_COUNT :\
52 JUNO_CLUSTER0_CORE_COUNT);
53}
Soby Mathewcbafd7a2016-11-14 12:44:32 +000054
55/*
56 * The array mapping platform core position (implemented by plat_my_core_pos())
57 * to the SCMI power domain ID implemented by SCP.
58 */
59const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = {
60 2, 3, 4, 5, 0, 1 };