forked from Mirrors/opensbi
4500828743
Currently, the platform's timer device is tracked in two places: the core SBI implementation has `timer_dev`, and the FDT timer layer has `current_driver`. The latter is used for warm initialization of the timer device. However, this warm init is not specific to FDT-based platforms; other platforms call exactly the same functions from the same point in the boot sequence. The code is simplified and made common across platforms by treating warm init and exit as properties of the driver, not the platform. Then the platform's only role is to select and prepare a driver during cold boot. For now, only add a .warm_init hook, since none of the existing drivers need an .exit hook. It could be added in the future if needed. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
29 lines
603 B
C
29 lines
603 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 Andes Technology Corporation
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*
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* Authors:
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* Zong Li <zong@andestech.com>
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* Nylon Chen <nylon7@andestech.com>
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* Yu Chien Peter Lin <peterlin@andestech.com>
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*/
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#ifndef __TIMER_ANDES_PLMT_H__
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#define __TIMER_ANDES_PLMT_H__
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#define DEFAULT_AE350_PLMT_FREQ 60000000
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#define PLMT_REGION_ALIGN 0x1000
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struct plmt_data {
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u32 hart_count;
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unsigned long size;
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unsigned long timer_freq;
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volatile u64 *time_val;
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volatile u64 *time_cmp;
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};
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int plmt_cold_timer_init(struct plmt_data *plmt);
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#endif /* __TIMER_ANDES_PLMT_H__ */
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