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85f199b774
Aspeed AST2700 is a quad-core SoC with ARM Cortex-A35 integrated. This patch adds the initial platform support for AST2700 and also updates the documents. Change-Id: I1796f7aae5ed2d1799e91fabb8949607959cd9b3 Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
43 lines
916 B
C
43 lines
916 B
C
/*
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* Copyright (c) 2023, Aspeed Technology Inc.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arch.h>
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#include <lib/psci/psci.h>
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#include <platform_def.h>
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static const unsigned char ast2700_power_domain_tree_desc[] = {
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PLATFORM_SYSTEM_COUNT,
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PLATFORM_CORE_COUNT_PER_CLUSTER,
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};
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const unsigned char *plat_get_power_domain_tree_desc(void)
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{
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return ast2700_power_domain_tree_desc;
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}
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unsigned int plat_core_pos_by_mpidr(u_register_t mpidr)
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{
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unsigned int cluster_id, cpu_id;
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mpidr &= MPIDR_AFFINITY_MASK;
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if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)) {
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return -1;
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}
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cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
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cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
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if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
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return -1;
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}
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if (cpu_id >= PLATFORM_CORE_COUNT_PER_CLUSTER) {
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return -1;
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}
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return (cluster_id * PLATFORM_CORE_COUNT_PER_CLUSTER) + cpu_id;
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}
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