mirror of
https://github.com/AsahiLinux/u-boot
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154 lines
3.4 KiB
C
154 lines
3.4 KiB
C
/*
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* Author: Xilinx, Inc.
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*
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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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* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
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* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
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* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
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* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
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* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
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* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
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* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
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* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
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* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
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* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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*
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* Xilinx hardware products are not intended for use in life support
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* appliances, devices, or systems. Use in such applications is
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* expressly prohibited.
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*
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*
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* (c) Copyright 2002-2004 Xilinx Inc.
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* All rights reserved.
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*
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <common.h>
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#include <asm/u-boot.h>
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#include <asm/processor.h>
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#include <command.h>
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#include <config.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define USE_CHAN1 \
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((defined XPAR_UARTNS550_0_BASEADDR) && (defined CONFIG_SYS_INIT_CHAN1))
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#define USE_CHAN2 \
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((defined XPAR_UARTNS550_1_BASEADDR) && (defined CONFIG_SYS_INIT_CHAN2))
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#if USE_CHAN1
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#include <ns16550.h>
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#endif
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#if USE_CHAN1
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const NS16550_t COM_PORTS[] = { (NS16550_t) (XPAR_UARTNS550_0_BASEADDR + 3)
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#if USE_CHAN2
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, (NS16550_t) (XPAR_UARTNS550_1_BASEADDR + 3)
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#endif
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};
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#endif
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int
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serial_init(void)
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{
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#if USE_CHAN1
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int clock_divisor;
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clock_divisor = XPAR_UARTNS550_0_CLOCK_FREQ_HZ / 16 / gd->baudrate;
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(void) NS16550_init(COM_PORTS[0], clock_divisor);
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#if USE_CHAN2
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clock_divisor = XPAR_UARTNS550_1_CLOCK_FREQ_HZ / 16 / gd->baudrate;
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(void) NS16550_init(COM_PORTS[1], clock_divisor);
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#endif
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#endif
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return 0;
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}
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void
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serial_putc(const char c)
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{
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if (c == '\n')
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NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
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NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
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}
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int
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serial_getc(void)
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{
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return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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int
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serial_tstc(void)
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{
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return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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void
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serial_setbrg(void)
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{
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#if USE_CHAN1
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int clock_divisor;
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clock_divisor = XPAR_UARTNS550_0_CLOCK_FREQ_HZ / 16 / gd->baudrate;
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NS16550_reinit(COM_PORTS[0], clock_divisor);
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#if USE_CHAN2
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clock_divisor = XPAR_UARTNS550_1_CLOCK_FREQ_HZ / 16 / gd->baudrate;
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NS16550_reinit(COM_PORTS[1], clock_divisor);
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#endif
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#endif
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}
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void
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serial_puts(const char *s)
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{
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while (*s) {
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serial_putc(*s++);
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}
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}
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#if defined(CONFIG_CMD_KGDB)
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void
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kgdb_serial_init(void)
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{
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}
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void
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putDebugChar(int c)
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{
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serial_putc(c);
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}
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void
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putDebugStr(const char *str)
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{
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serial_puts(str);
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}
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int
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getDebugChar(void)
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{
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return serial_getc();
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}
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void
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kgdb_interruptible(int yes)
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{
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return;
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}
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#endif
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