blob: 6d8fc05cefa876618da74c9e8388a3c234e37d67 [file] [log] [blame]
/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arm_def.h>
#include <css_pm.h>
#include <plat_arm.h>
#include <platform.h>
#include "juno_def.h"
#include "../../css/drivers/scmi/scmi.h"
#include "../../css/drivers/mhu/css_mhu_doorbell.h"
static scmi_channel_plat_info_t juno_scmi_plat_info = {
.scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE,
.db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF,
.db_preserve_mask = 0xfffffffe,
.db_modify_mask = 0x1,
.ring_doorbell = &mhu_ring_doorbell,
};
scmi_channel_plat_info_t *plat_css_get_scmi_info()
{
return &juno_scmi_plat_info;
}
/*
* On Juno, the system power level is the highest power level.
* The first entry in the power domain descriptor specifies the
* number of system power domains i.e. 1.
*/
#define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT
/*
* The Juno power domain tree descriptor. The cluster power domains
* are arranged so that when the PSCI generic code creates the power
* domain tree, the indices of the CPU power domain nodes it allocates
* match the linear indices returned by plat_core_pos_by_mpidr()
* i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher
* indices for CLUSTER0 CPUs.
*/
static const unsigned char juno_power_domain_tree_desc[] = {
/* No of root nodes */
JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL,
/* No of children for the root node */
JUNO_CLUSTER_COUNT,
/* No of children for the first cluster node */
JUNO_CLUSTER1_CORE_COUNT,
/* No of children for the second cluster node */
JUNO_CLUSTER0_CORE_COUNT
};
/*******************************************************************************
* This function returns the Juno topology tree information.
******************************************************************************/
const unsigned char *plat_get_power_domain_tree_desc(void)
{
return juno_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 (((mpidr & (u_register_t) 0x100) != 0U) ?
JUNO_CLUSTER1_CORE_COUNT : JUNO_CLUSTER0_CORE_COUNT);
}
/*
* The array mapping platform core position (implemented by plat_my_core_pos())
* to the SCMI power domain ID implemented by SCP.
*/
const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = {
2, 3, 4, 5, 0, 1 };