35 lines
818 B
C
35 lines
818 B
C
/*
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* Copyright (c) 2015, 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_helpers.h>
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#include <lib/mmio.h>
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#include <mcucfg.h>
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#include <mt8173_def.h>
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#include <mt_cpuxgpt.h>
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static void write_cpuxgpt(unsigned int reg_index, unsigned int value)
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{
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mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_idx, reg_index);
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mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_ctl, value);
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}
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static void cpuxgpt_set_init_cnt(unsigned int countH, unsigned int countL)
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{
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write_cpuxgpt(INDEX_CNT_H_INIT, countH);
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/* update count when countL programmed */
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write_cpuxgpt(INDEX_CNT_L_INIT, countL);
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}
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void generic_timer_backup(void)
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{
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uint64_t cval;
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cval = read_cntpct_el0();
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cpuxgpt_set_init_cnt((uint32_t)(cval >> 32),
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(uint32_t)(cval & 0xffffffff));
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}
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