44 lines
998 B
C
44 lines
998 B
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2009 Lemote Inc.
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* Author: Wu Zhangjin, wuzhangjin@gmail.com
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*/
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#include <linux/export.h>
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#include <asm/bootinfo.h>
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#include <asm/setup.h>
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#include <loongson.h>
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/* raw */
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unsigned long loongson_uart_base;
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/* ioremapped */
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unsigned long _loongson_uart_base;
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EXPORT_SYMBOL(loongson_uart_base);
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EXPORT_SYMBOL(_loongson_uart_base);
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void prom_init_loongson_uart_base(void)
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{
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switch (mips_machtype) {
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case MACH_LEMOTE_FL2E:
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loongson_uart_base = LOONGSON_PCIIO_BASE + 0x3f8;
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break;
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case MACH_LEMOTE_FL2F:
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case MACH_LEMOTE_LL2F:
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loongson_uart_base = LOONGSON_PCIIO_BASE + 0x2f8;
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break;
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case MACH_LEMOTE_ML2F7:
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case MACH_LEMOTE_YL2F89:
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case MACH_DEXXON_GDIUM2F10:
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case MACH_LEMOTE_NAS:
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default:
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/* The CPU provided serial port (LPC) */
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loongson_uart_base = LOONGSON_LIO1_BASE + 0x3f8;
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break;
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}
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_loongson_uart_base = TO_UNCAC(loongson_uart_base);
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setup_8250_early_printk_port(_loongson_uart_base, 0, 1024);
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}
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