blob: bc95c6405dcbb2ac4954c4850f0b85e772b726db [file] [log] [blame]
Rex-BC Chen749b2112021-09-28 11:24:09 +08001/*
2 * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#include <arch.h>
8#include <arch_helpers.h>
9#include <lib/psci/psci.h>
10
11#include <plat_helpers.h>
12#include <platform_def.h>
13
14const unsigned char mtk_power_domain_tree_desc[] = {
15 /* Number of root nodes */
16 PLATFORM_SYSTEM_COUNT,
17 /* Number of children for the root node */
18 PLATFORM_MCUSYS_COUNT,
19 /* Number of children for the mcusys node */
20 PLATFORM_CLUSTER_COUNT,
21 /* Number of children for the first cluster node */
22 PLATFORM_CLUSTER0_CORE_COUNT,
23};
24
25const unsigned char *plat_get_power_domain_tree_desc(void)
26{
27 return mtk_power_domain_tree_desc;
28}
29
30/*******************************************************************************
31 * This function implements a part of the critical interface between the psci
32 * generic layer and the platform that allows the former to query the platform
33 * to convert an MPIDR to a unique linear index. An error code (-1) is returned
34 * in case the MPIDR is invalid.
35 ******************************************************************************/
36int plat_core_pos_by_mpidr(u_register_t mpidr)
37{
38 unsigned int cluster_id, cpu_id;
39
40 if ((read_mpidr() & MPIDR_MT_MASK) != 0) {
41 /* ARMv8.2 arch */
42 if ((mpidr & (MPIDR_AFFLVL_MASK << MPIDR_AFF0_SHIFT)) != 0) {
43 return -1;
44 }
45 return plat_mediatek_calc_core_pos(mpidr);
46 }
47
48 mpidr &= MPIDR_AFFINITY_MASK;
49
50 if ((mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)) != 0) {
51 return -1;
52 }
53
54 cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
55 cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
56
57 if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
58 return -1;
59 }
60
61 /*
62 * Validate cpu_id by checking whether it represents a CPU in
63 * one of the two clusters present on the platform.
64 */
65 if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER) {
66 return -1;
67 }
68
69 return (cpu_id + (cluster_id * 8));
70}