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