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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | /* * (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_NS16550_SERIAL #include <ns16550.h> #ifdef CFG_NS87308 #include <ns87308.h> #endif #if defined (CONFIG_SERIAL_MULTI) #include <serial.h> #endif DECLARE_GLOBAL_DATA_PTR; #if !defined(CONFIG_CONS_INDEX) #if defined (CONFIG_SERIAL_MULTI) /* with CONFIG_SERIAL_MULTI we might have no console * on these devices */ #else #error "No console index specified." #endif /* CONFIG_SERIAL_MULTI */ #elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4) #error "Invalid console index value." #endif #if CONFIG_CONS_INDEX == 1 && !defined(CFG_NS16550_COM1) #error "Console port 1 defined but not configured." #elif CONFIG_CONS_INDEX == 2 && !defined(CFG_NS16550_COM2) #error "Console port 2 defined but not configured." #elif CONFIG_CONS_INDEX == 3 && !defined(CFG_NS16550_COM3) #error "Console port 3 defined but not configured." #elif CONFIG_CONS_INDEX == 4 && !defined(CFG_NS16550_COM4) #error "Console port 4 defined but not configured." #endif /* Note: The port number specified in the functions is 1 based. * the array is 0 based. */ static NS16550_t serial_ports[4] = { #ifdef CFG_NS16550_COM1 (NS16550_t)CFG_NS16550_COM1, #else NULL, #endif #ifdef CFG_NS16550_COM2 (NS16550_t)CFG_NS16550_COM2, #else NULL, #endif #ifdef CFG_NS16550_COM3 (NS16550_t)CFG_NS16550_COM3, #else NULL, #endif #ifdef CFG_NS16550_COM4 (NS16550_t)CFG_NS16550_COM4 #else NULL #endif }; #define PORT serial_ports[port-1] #if defined(CONFIG_CONS_INDEX) #define CONSOLE (serial_ports[CONFIG_CONS_INDEX-1]) #endif #if defined(CONFIG_SERIAL_MULTI) /* Multi serial device functions */ #define DECLARE_ESERIAL_FUNCTIONS(port) \ int eserial##port##_init (void) {\ int clock_divisor; \ clock_divisor = calc_divisor(serial_ports[port-1]); \ NS16550_init(serial_ports[port-1], clock_divisor); \ return(0);}\ void eserial##port##_setbrg (void) {\ serial_setbrg_dev(port);}\ int eserial##port##_getc (void) {\ return serial_getc_dev(port);}\ int eserial##port##_tstc (void) {\ return serial_tstc_dev(port);}\ void eserial##port##_putc (const char c) {\ serial_putc_dev(port, c);}\ void eserial##port##_puts (const char *s) {\ serial_puts_dev(port, s);} /* Serial device descriptor */ #define INIT_ESERIAL_STRUCTURE(port,name,bus) {\ name,\ bus,\ eserial##port##_init,\ eserial##port##_setbrg,\ eserial##port##_getc,\ eserial##port##_tstc,\ eserial##port##_putc,\ eserial##port##_puts, } #endif /* CONFIG_SERIAL_MULTI */ static int calc_divisor (NS16550_t port) { #ifdef CONFIG_OMAP1510 /* If can't cleanly clock 115200 set div to 1 */ if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) { port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */ return (1); /* return 1 for base divisor */ } port->osc_12m_sel = 0; /* clear if previsouly set */ #endif #ifdef CONFIG_OMAP1610 /* If can't cleanly clock 115200 set div to 1 */ if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) { return (26); /* return 26 for base divisor */ } #endif #ifdef CONFIG_APTIX #define MODE_X_DIV 13 #else #define MODE_X_DIV 16 #endif return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate); } #if !defined(CONFIG_SERIAL_MULTI) int serial_init (void) { int clock_divisor; #ifdef CFG_NS87308 initialise_ns87308(); #endif #ifdef CFG_NS16550_COM1 clock_divisor = calc_divisor(serial_ports[0]); NS16550_init(serial_ports[0], clock_divisor); #endif #ifdef CFG_NS16550_COM2 clock_divisor = calc_divisor(serial_ports[1]); NS16550_init(serial_ports[1], clock_divisor); #endif #ifdef CFG_NS16550_COM3 clock_divisor = calc_divisor(serial_ports[2]); NS16550_init(serial_ports[2], clock_divisor); #endif #ifdef CFG_NS16550_COM4 clock_divisor = calc_divisor(serial_ports[3]); NS16550_init(serial_ports[3], clock_divisor); #endif return (0); } #endif void _serial_putc(const char c,const int port) { if (c == '\n') NS16550_putc(PORT, '\r'); NS16550_putc(PORT, c); } void _serial_putc_raw(const char c,const int port) { NS16550_putc(PORT, c); } void _serial_puts (const char *s,const int port) { while (*s) { _serial_putc (*s++,port); } } int _serial_getc(const int port) { return NS16550_getc(PORT); } int _serial_tstc(const int port) { return NS16550_tstc(PORT); } void _serial_setbrg (const int port) { int clock_divisor; clock_divisor = calc_divisor(PORT); NS16550_reinit(PORT, clock_divisor); } #if defined(CONFIG_SERIAL_MULTI) static inline void serial_putc_dev(unsigned int dev_index,const char c) { _serial_putc(c,dev_index); } #else void serial_putc(const char c) { _serial_putc(c,CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) static inline void serial_putc_raw_dev(unsigned int dev_index,const char c) { _serial_putc_raw(c,dev_index); } #else void serial_putc_raw(const char c) { _serial_putc_raw(c,CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) static inline void serial_puts_dev(unsigned int dev_index,const char *s) { _serial_puts(s,dev_index); } #else void serial_puts(const char *s) { _serial_puts(s,CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) static inline int serial_getc_dev(unsigned int dev_index) { return _serial_getc(dev_index); } #else int serial_getc(void) { return _serial_getc(CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) static inline int serial_tstc_dev(unsigned int dev_index) { return _serial_tstc(dev_index); } #else int serial_tstc(void) { return _serial_tstc(CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) static inline void serial_setbrg_dev(unsigned int dev_index) { _serial_setbrg(dev_index); } #else void serial_setbrg(void) { _serial_setbrg(CONFIG_CONS_INDEX); } #endif #if defined(CONFIG_SERIAL_MULTI) DECLARE_ESERIAL_FUNCTIONS(1); struct serial_device eserial1_device = INIT_ESERIAL_STRUCTURE(1,"eserial0","EUART1"); DECLARE_ESERIAL_FUNCTIONS(2); struct serial_device eserial2_device = INIT_ESERIAL_STRUCTURE(2,"eserial1","EUART2"); DECLARE_ESERIAL_FUNCTIONS(3); struct serial_device eserial3_device = INIT_ESERIAL_STRUCTURE(3,"eserial2","EUART3"); DECLARE_ESERIAL_FUNCTIONS(4); struct serial_device eserial4_device = INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4"); #endif /* CONFIG_SERIAL_MULTI */ #endif |