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2b2b565717
Some platforms require extra firmware to implement CPU_SUSPEND, or only have working CPU_SUSPEND in certain configurations. On these platforms, CPU idle states should only be listed in the devicetree when they are actually available. Add a function BL31 can use to dynamically supply this idle state information. Change-Id: I64fcc288303faba8abec4f59efd13a04220d54dc Signed-off-by: Samuel Holland <samuel@sholland.org>
37 lines
998 B
C
37 lines
998 B
C
/*
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* Copyright (c) 2019-2020, 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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#ifndef FDT_FIXUP_H
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#define FDT_FIXUP_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define INVALID_BASE_ADDR ((uintptr_t)~0UL)
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struct psci_cpu_idle_state {
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const char *name;
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uint32_t power_state;
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bool local_timer_stop;
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uint32_t entry_latency_us;
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uint32_t exit_latency_us;
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uint32_t min_residency_us;
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uint32_t wakeup_latency_us;
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};
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int dt_add_psci_node(void *fdt);
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int dt_add_psci_cpu_enable_methods(void *fdt);
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int fdt_add_reserved_memory(void *dtb, const char *node_name,
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uintptr_t base, size_t size);
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int fdt_add_cpus_node(void *dtb, unsigned int afflv0,
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unsigned int afflv1, unsigned int afflv2);
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int fdt_add_cpu_idle_states(void *dtb, const struct psci_cpu_idle_state *state);
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int fdt_adjust_gic_redist(void *dtb, unsigned int nr_cores, uintptr_t gicr_base,
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unsigned int gicr_frame_size);
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#endif /* FDT_FIXUP_H */
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