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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/mips/loongson/common/uart_base.c
10818 views
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/*

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 * Copyright (C) 2009 Lemote Inc.

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 * Author: Wu Zhangjin, [email protected]

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 *

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 * This program is free software; you can redistribute  it and/or modify it

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 * under  the terms of  the GNU General  Public License as published by the

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 * Free Software Foundation;  either version 2 of the  License, or (at your

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 * option) any later version.

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 */

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#include <linux/module.h>

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#include <asm/bootinfo.h>

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#include <loongson.h>

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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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/* raw */

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unsigned long 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 */

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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 =

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		(unsigned long)ioremap_nocache(loongson_uart_base, 8);

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}

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