35 lines
921 B
C
35 lines
921 B
C
/*
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* Copyright (c) 2018 Synopsys, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/arch/cpu.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/init.h>
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#ifdef CONFIG_UART_NS16550
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static int uart_ns16550_init(void)
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{
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/* On ARC EM Starter kit board,
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* send the UART the command to clear the interrupt
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*/
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#if DT_NODE_HAS_STATUS(DT_INST(0, ns16550), okay)
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sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x4);
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sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x10);
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#endif /* DT_NODE_HAS_STATUS(DT_INST(0, ns16550), okay) */
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#if DT_NODE_HAS_STATUS(DT_INST(1, ns16550), okay)
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sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x4);
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sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x10);
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#endif /* DT_NODE_HAS_STATUS(DT_INST(1, ns16550), okay) */
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return 0;
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}
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SYS_INIT(uart_ns16550_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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#endif /* CONFIG_UART_NS16550 */
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