| /* |
| * (C) Copyright 2000 |
| * Rob Taylor, Flying Pig Systems. robt@flyingpig.com. |
| * |
| * 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> |
| |
| #ifdef CFG_PRINTF |
| #ifdef CFG_NS16550_SERIAL |
| |
| #include <ns16550.h> |
| #ifdef CFG_NS87308 |
| #include <ns87308.h> |
| #endif |
| |
| #if CONFIG_CONS_INDEX == 1 |
| static NS16550_t console = (NS16550_t) CFG_NS16550_COM1; |
| #elif CONFIG_CONS_INDEX == 2 |
| static NS16550_t console = (NS16550_t) CFG_NS16550_COM2; |
| #elif CONFIG_CONS_INDEX == 3 |
| static NS16550_t console = (NS16550_t) CFG_NS16550_COM3; |
| #elif CONFIG_CONS_INDEX == 4 |
| static NS16550_t console = (NS16550_t) CFG_NS16550_COM4; |
| #else |
| #error no valid console defined |
| #endif |
| |
| static int calc_divisor (void) |
| { |
| // DECLARE_GLOBAL_DATA_PTR; |
| #ifdef CONFIG_OMAP1510 |
| /* If can't cleanly clock 115200 set div to 1 */ |
| if ((CFG_NS16550_CLK == 12000000) && (CONFIG_BAUDRATE == 115200)) { |
| console->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */ |
| return (1); /* return 1 for base divisor */ |
| } |
| console->osc_12m_sel = 0; /* clear if previsouly set */ |
| #endif |
| #if defined(CONFIG_OMAP1610) || defined(CONFIG_OMAP1710) |
| /* If can't cleanly clock 115200 set div to 1 */ |
| if ((CFG_NS16550_CLK == 48000000) && (CONFIG_BAUDRATE == 115200)) { |
| return (26); /* return 26 for base divisor */ |
| } |
| #endif |
| return (CFG_NS16550_CLK / 16 / CONFIG_BAUDRATE); |
| } |
| |
| int serial_init (void) |
| { |
| int clock_divisor = calc_divisor(); |
| |
| #ifdef CFG_NS87308 |
| initialise_ns87308(); |
| #endif |
| |
| NS16550_init(console, clock_divisor); |
| |
| return (0); |
| } |
| |
| void |
| serial_putc(const char c) |
| { |
| if (c == '\n') |
| NS16550_putc(console, '\r'); |
| |
| NS16550_putc(console, c); |
| } |
| |
| void |
| serial_puts (const char *s) |
| { |
| while (*s) { |
| serial_putc (*s++); |
| } |
| } |
| |
| |
| int |
| serial_getc(void) |
| { |
| return NS16550_getc(console); |
| } |
| |
| int |
| serial_tstc(void) |
| { |
| return NS16550_tstc(console); |
| } |
| |
| void |
| serial_setbrg (void) |
| { |
| int clock_divisor; |
| |
| clock_divisor = calc_divisor(); |
| NS16550_reinit(console, clock_divisor); |
| } |
| |
| #endif |
| #endif |