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dddba19a6a
Introduce the bare mimimum base of the msm8916 BL31 port. This is pretty much just a standard platform "skeleton" with CPU/memory initialization and an UART driver. This allows booting into e.g. U-Boot with working UART output. Note that the plat/qti/msm8916 port is completely separate and does not make use of anything in plat/qti/common at the moment. The main reason for that is that plat/qti/common is heavily focused around having a binary "qtiseclib" component, while the MSM8916 port is fully open-source (and therefore somewhat limited to publicly documented functionality). In the future it might be possible to re-use some of the open-source parts in plat/qti/common (e.g. spmi_arb.c or pm_ps_hold.c) but it's not strictly required for the basic functionality supported so far. Change-Id: I7b4375df0f947b3bd1e55b0b52b21edb6e6d175b Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
36 lines
765 B
C
36 lines
765 B
C
/*
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* Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved.
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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 <plat/common/platform.h>
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#include <platform_def.h>
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static const unsigned char plat_power_domain_tree_desc[PLAT_MAX_PWR_LVL + 1] = {
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PLATFORM_SYSTEM_COUNT,
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PLATFORM_CLUSTER_COUNT,
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PLATFORM_MAX_CPUS_PER_CLUSTER,
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};
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int plat_core_pos_by_mpidr(u_register_t mpidr)
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{
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unsigned int core = MPIDR_AFFLVL0_VAL(mpidr);
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if (MPIDR_AFFLVL3_VAL(mpidr) > 0 ||
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MPIDR_AFFLVL2_VAL(mpidr) > 0 ||
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MPIDR_AFFLVL1_VAL(mpidr) > 0 ||
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core >= PLATFORM_MAX_CPUS_PER_CLUSTER) {
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return -1;
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}
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return core;
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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 plat_power_domain_tree_desc;
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}
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