diff options
Diffstat (limited to 'cpu/arm920t/serial.c')
| -rw-r--r-- | cpu/arm920t/serial.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/cpu/arm920t/serial.c b/cpu/arm920t/serial.c deleted file mode 100644 index 1749e82..0000000 --- a/cpu/arm920t/serial.c +++ /dev/null @@ -1,178 +0,0 @@ - /* - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> - * - * 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_S3C2400) || defined(CONFIG_TRAB) -#include <s3c2400.h> -#elif defined(CONFIG_S3C2410) -#include <s3c2410.h> -#endif - -#ifdef CONFIG_SERIAL1 -#define UART_NR S3C24X0_UART0 - -#elif defined(CONFIG_SERIAL2) -# if defined(CONFIG_TRAB) -# error "TRAB supports only CONFIG_SERIAL1" -# endif -#define UART_NR S3C24X0_UART1 - -#elif defined(CONFIG_SERIAL3) -# if defined(CONFIG_TRAB) -# #error "TRAB supports only CONFIG_SERIAL1" -# endif -#define UART_NR S3C24X0_UART2 - -#else -#error "Bad: you didn't configure serial ..." -#endif - -void serial_setbrg (void) -{ - DECLARE_GLOBAL_DATA_PTR; - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); - int i; - unsigned int reg = 0; - - /* value is calculated so : (int)(PCLK/16./baudrate) -1 */ - reg = get_PCLK() / (16 * gd->baudrate) - 1; - - /* FIFO enable, Tx/Rx FIFO clear */ - uart->UFCON = 0x07; - uart->UMCON = 0x0; - /* Normal,No parity,1 stop,8 bit */ - uart->ULCON = 0x3; - /* - * tx=level,rx=edge,disable timeout int.,enable rx error int., - * normal,interrupt or polling - */ - uart->UCON = 0x245; - uart->UBRDIV = reg; - -#ifdef CONFIG_HWFLOW - uart->UMCON = 0x1; /* RTS up */ -#endif - for (i = 0; i < 100; i++); -} - -/* - * 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); -} - -/* - * 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) -{ - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); - - /* wait for character to arrive */ - while (!(uart->UTRSTAT & 0x1)); - - return uart->URXH & 0xff; -} - -#ifdef CONFIG_HWFLOW -static int hwflow = 0; /* turned off by default */ -int hwflow_onoff(int on) -{ - switch(on) { - case 0: - default: - break; /* return current */ - case 1: - hwflow = 1; /* turn on */ - break; - case -1: - hwflow = 0; /* turn off */ - break; - } - return hwflow; -} -#endif - -#ifdef CONFIG_MODEM_SUPPORT -static int be_quiet = 0; -void disable_putc(void) -{ - be_quiet = 1; -} - -void enable_putc(void) -{ - be_quiet = 0; -} -#endif - - -/* - * Output a single byte to the serial port. - */ -void serial_putc (const char c) -{ - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); -#ifdef CONFIG_MODEM_SUPPORT - if (be_quiet) - return; -#endif - - /* wait for room in the tx FIFO */ - while (!(uart->UTRSTAT & 0x2)); - -#ifdef CONFIG_HWFLOW - /* Wait for CTS up */ - while(hwflow && !(uart->UMSTAT & 0x1)) - ; -#endif - - uart->UTXH = c; - - /* If \n, also do \r */ - if (c == '\n') - serial_putc ('\r'); -} - -/* - * Test whether a character is in the RX buffer - */ -int serial_tstc (void) -{ - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR); - - return uart->UTRSTAT & 0x1; -} - -void -serial_puts (const char *s) -{ - while (*s) { - serial_putc (*s++); - } -} |