/* * (C) Copyright 2002-2004 * Wolfgang Denk, DENX Software Engineering, <wd@denx.de> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Alex Zuepke <azu@sysgo.de> * * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <common.h> #if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) #include <clps7111.h> void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; unsigned int reg = 0; switch (gd->baudrate) { case 1200: reg = 191; break; case 9600: reg = 23; break; case 19200: reg = 11; break; case 38400: reg = 5; break; case 57600: reg = 3; break; case 115200: reg = 1; break; default: hang (); break; } /* init serial serial 1,2 */ IO_SYSCON1 = SYSCON1_UART1EN; IO_SYSCON2 = SYSCON2_UART2EN; reg |= UBRLCR_WRDLEN8; IO_UBRLCR1 = reg; IO_UBRLCR2 = reg; } /* * Initialise the serial port with the given baudrate. The settings * are always 8 data bits, no parity, 1 stop bit, no start bits. * */ int serial_init (void) { serial_setbrg (); return (0); } /* * Output a single byte to the serial port. */ void serial_putc (const char c) { int tmo; /* If \n, also do \r */ if (c == '\n') serial_putc ('\r'); tmo = get_timer (0) + 1 * CFG_HZ; while (IO_SYSFLG1 & SYSFLG1_UTXFF) if (get_timer (0) > tmo) break; IO_UARTDR1 = c; } /* * Read a single byte from the serial port. Returns 1 on success, 0 * otherwise. When the function is succesfull, the character read is * written into its argument c. */ int serial_tstc (void) { return !(IO_SYSFLG1 & SYSFLG1_URXFE); } /* * Read a single byte from the serial port. Returns 1 on success, 0 * otherwise. When the function is succesfull, the character read is * written into its argument c. */ int serial_getc (void) { while (IO_SYSFLG1 & SYSFLG1_URXFE); return IO_UARTDR1 & 0xff; } void serial_puts (const char *s) { while (*s) { serial_putc (*s++); } } #endif /* defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) */