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Diffstat (limited to 'cpu/coldfire/serial.c')
| -rw-r--r-- | cpu/coldfire/serial.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/cpu/coldfire/serial.c b/cpu/coldfire/serial.c deleted file mode 100644 index a140fe3..0000000 --- a/cpu/coldfire/serial.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * (C) Copyright 2000-2003 - * 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 - */ - -#include <common.h> -#include <commproc.h> -#include <command.h> - -#ifdef CONFIG_M5272 -#include <asm/m5272.h> -#endif -#ifdef CONFIG_M5282 -#include <asm/m5282.h> -#endif -#include <asm/mcfuart.h> - -#define DoubleClock(a) ((double)(MCF_CLK) / 32.0 / (double)(a)) - -void rs_serial_setbaudrate (int port, int baudrate) -{ -#ifdef CONFIG_M5272 - volatile unsigned char *uartp; - double clock, fraction; - - if (port == 0) - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1); - else - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE2); - - clock = DoubleClock (baudrate); /* Set baud above */ - - fraction = ((clock - (int) clock) * 16.0) + 0.5; - - uartp[MCFUART_UBG1] = (((int) clock >> 8) & 0xff); /* set msb baud */ - uartp[MCFUART_UBG2] = ((int) clock & 0xff); /* set lsb baud */ - uartp[MCFUART_UFPD] = ((int) fraction & 0xf); /* set baud fraction adjust */ -#endif -} - -void rs_serial_init (int port, int baudrate) -{ - volatile unsigned char *uartp; - double clock, fraction; - - /* - * Reset UART, get it into known state... - */ - if (port == 0) - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1); - else - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE2); - - uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX; /* reset RX */ - uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX; /* reset TX */ - uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETMRPTR; /* reset MR pointer */ - uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETERR; /* reset Error pointer */ - - /* - * Set port for CONSOLE_BAUD_RATE, 8 data bits, 1 stop bit, no parity. - */ - uartp[MCFUART_UMR] = MCFUART_MR1_PARITYNONE | MCFUART_MR1_CS8; - uartp[MCFUART_UMR] = MCFUART_MR2_STOP1; - - rs_serial_setbaudrate (port, baudrate); - - uartp[MCFUART_UCSR] = - MCFUART_UCSR_RXCLKTIMER | MCFUART_UCSR_TXCLKTIMER; - uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE; - - return; -} - - -/****************************************************************************/ - -/* - * Output a single character, using UART polled mode. - * This is used for console output. - */ - -void rs_put_char (char ch) -{ - volatile unsigned char *uartp; - int i; - - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1); - - for (i = 0; (i < 0x10000); i++) { - if (uartp[MCFUART_USR] & MCFUART_USR_TXREADY) - break; - } - uartp[MCFUART_UTB] = ch; - return; -} - -int rs_is_char (void) -{ - volatile unsigned char *uartp; - - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1); - return ((uartp[MCFUART_USR] & MCFUART_USR_RXREADY) ? 1 : 0); -} - -int rs_get_char (void) -{ - volatile unsigned char *uartp; - - uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1); - return (uartp[MCFUART_URB]); -} - -void serial_setbrg (void) -{ - DECLARE_GLOBAL_DATA_PTR; - rs_serial_setbaudrate (0, gd->bd->bi_baudrate); -} - -int serial_init (void) -{ - DECLARE_GLOBAL_DATA_PTR; - rs_serial_init (0, gd->bd->bi_baudrate); - return 0; -} - - -void serial_putc (const char c) -{ - if (c == '\n') - serial_putc ('\r'); - rs_put_char (c); -} - -void serial_puts (const char *s) -{ - while (*s) { - serial_putc (*s++); - } -} - -int serial_getc (void) -{ - while (!rs_is_char ()); - return rs_get_char (); -} - -int serial_tstc () -{ - return rs_is_char (); -} |