52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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/*
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* Copyright 2001 MontaVista Software Inc.
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* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
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*
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* arch/mips/vr4181/common/serial.c
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* initialize serial port on vr4181.
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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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*/
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/*
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* [jsun, 010925]
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* You need to make sure rs_table has at least one element in
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* drivers/char/serial.c file. There is no good way to do it right
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* now. A workaround is to include CONFIG_SERIAL_MANY_PORTS in your
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* configure file, which would gives you 64 ports and wastes 11K ram.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/serial.h>
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#include <asm/vr4181/vr4181.h>
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void __init vr4181_init_serial(void)
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{
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struct serial_struct s;
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/* turn on UART clock */
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*VR4181_CMUCLKMSK |= VR4181_CMUCLKMSK_MSKSIU;
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/* clear memory */
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memset(&s, 0, sizeof(s));
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s.line = 0; /* we set the first one */
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s.baud_base = 1152000;
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s.irq = VR4181_IRQ_SIU;
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s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; /* STD_COM_FLAGS */
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s.iomem_base = (u8*)VR4181_SIURB;
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s.iomem_reg_shift = 0;
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s.io_type = SERIAL_IO_MEM;
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if (early_serial_setup(&s) != 0) {
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panic("vr4181_init_serial() failed!");
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}
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}
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