diff options
| -rw-r--r-- | cpu/arm720t/serial.c | 126 | ||||
| -rw-r--r-- | lib_arm/cache.c | 29 |
2 files changed, 155 insertions, 0 deletions
diff --git a/cpu/arm720t/serial.c b/cpu/arm720t/serial.c new file mode 100644 index 0000000..d38ac39 --- /dev/null +++ b/cpu/arm720t/serial.c @@ -0,0 +1,126 @@ +/* + * (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 <clps7111.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 (); + + /* 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++); + } +} diff --git a/lib_arm/cache.c b/lib_arm/cache.c new file mode 100644 index 0000000..4f3cbc2 --- /dev/null +++ b/lib_arm/cache.c @@ -0,0 +1,29 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + */ + +/* for now: just dummy functions to satisfy the linker */ + +void flush_cache (unsigned long dummy1, unsigned long dummy2) +{ + return; +} |