/* * (C) Copyright 2002 * 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> #include <SA-1100.h> void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; unsigned int reg = 0; if (gd->baudrate == 1200) reg = 191; else if (gd->baudrate == 9600) reg = 23; else if (gd->baudrate == 19200) reg = 11; else if (gd->baudrate == 38400) reg = 5; else if (gd->baudrate == 57600) reg = 3; else if (gd->baudrate == 115200) reg = 1; else hang (); #ifdef CONFIG_SERIAL1 /* SA1110 uart function */ Ser1SDCR0 |= SDCR0_SUS; /* Wait until port is ready ... */ while(Ser1UTSR1 & UTSR1_TBY) {} /* init serial serial 1 */ Ser1UTCR3 = 0x00; Ser1UTSR0 = 0xff; Ser1UTCR0 = ( UTCR0_1StpBit | UTCR0_8BitData ); Ser1UTCR1 = 0; Ser1UTCR2 = (u32)reg; Ser1UTCR3 = ( UTCR3_RXE | UTCR3_TXE ); #elif defined(CONFIG_SERIAL3) /* Wait until port is ready ... */ while (Ser3UTSR1 & UTSR1_TBY) { } /* init serial serial 3 */ Ser3UTCR3 = 0x00; Ser3UTSR0 = 0xff; Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData); Ser3UTCR1 = 0; Ser3UTCR2 = (u32) reg; Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE); #else #error "Bad: you didn't configured serial ..." #endif } /* * 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) { #ifdef CONFIG_SERIAL1 /* wait for room in the tx FIFO on SERIAL1 */ while ((Ser1UTSR0 & UTSR0_TFS) == 0); Ser1UTDR = c; #elif defined(CONFIG_SERIAL3) /* wait for room in the tx FIFO on SERIAL3 */ while ((Ser3UTSR0 & UTSR0_TFS) == 0); Ser3UTDR = c; #endif /* If \n, also do \r */ if (c == '\n') serial_putc ('\r'); } /* * 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) { #ifdef CONFIG_SERIAL1 return Ser1UTSR1 & UTSR1_RNE; #elif defined(CONFIG_SERIAL3) return Ser3UTSR1 & UTSR1_RNE; #endif } /* * 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) { #ifdef CONFIG_SERIAL1 while (!(Ser1UTSR1 & UTSR1_RNE)); return (char) Ser1UTDR & 0xff; #elif defined(CONFIG_SERIAL3) while (!(Ser3UTSR1 & UTSR1_RNE)); return (char) Ser3UTDR & 0xff; #endif } void serial_puts (const char *s) { while (*s) { serial_putc (*s++); } }