blob: 94fa71f7808d418d6dd7ecac8b216d8530207086 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* Copyright (c) 2019, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
/* The A5DS power domain tree descriptor */
static const unsigned char a5ds_power_domain_tree_desc[] = {
1,
/* No of children for the root node */
A5DS_CLUSTER_COUNT,
/* No of children for the first cluster node */
A5DS_CORE_COUNT,
};
/*******************************************************************************
* This function returns the topology according to A5DS_CLUSTER_COUNT.
******************************************************************************/
const unsigned char *plat_get_power_domain_tree_desc(void)
{
return a5ds_power_domain_tree_desc;
}
/*******************************************************************************
* Get core position using mpidr
******************************************************************************/
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 >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
if (cluster_id >= A5DS_CLUSTER_COUNT)
return -1;
/*
* Validate cpu_id by checking whether it represents a CPU in
* one of the two clusters present on the platform.
*/
if (cpu_id >= A5DS_MAX_CPUS_PER_CLUSTER)
return -1;
return (cpu_id + (cluster_id * 4));
}
|
