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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 | /* * (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 * * Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00, with * changes based on the file arch/ppc/mbxboot/m8260_tty.c from the * Linux/PPC sources (m8260_tty.c had no copyright info in it). * * Martin Krause, 8 Jun 2006 * Added CONFIG_SERIAL_MULTI support */ /* * Minimal serial functions needed to use one of the PSC ports * as serial console interface. */ #include <common.h> #include <mpc5xxx.h> #if defined (CONFIG_SERIAL_MULTI) #include <serial.h> #endif DECLARE_GLOBAL_DATA_PTR; #if defined(CONFIG_PSC_CONSOLE) #if CONFIG_PSC_CONSOLE == 1 #define PSC_BASE MPC5XXX_PSC1 #elif CONFIG_PSC_CONSOLE == 2 #define PSC_BASE MPC5XXX_PSC2 #elif CONFIG_PSC_CONSOLE == 3 #define PSC_BASE MPC5XXX_PSC3 #elif defined(CONFIG_MGT5100) #error CONFIG_PSC_CONSOLE must be in 1, 2 or 3 #elif CONFIG_PSC_CONSOLE == 4 #define PSC_BASE MPC5XXX_PSC4 #elif CONFIG_PSC_CONSOLE == 5 #define PSC_BASE MPC5XXX_PSC5 #elif CONFIG_PSC_CONSOLE == 6 #define PSC_BASE MPC5XXX_PSC6 #else #error CONFIG_PSC_CONSOLE must be in 1 ... 6 #endif #if defined(CONFIG_SERIAL_MULTI) && !defined(CONFIG_PSC_CONSOLE2) #error you must define CONFIG_PSC_CONSOLE2 if CONFIG_SERIAL_MULTI is set #endif #if defined(CONFIG_SERIAL_MULTI) #if CONFIG_PSC_CONSOLE2 == 1 #define PSC_BASE2 MPC5XXX_PSC1 #elif CONFIG_PSC_CONSOLE2 == 2 #define PSC_BASE2 MPC5XXX_PSC2 #elif CONFIG_PSC_CONSOLE2 == 3 #define PSC_BASE2 MPC5XXX_PSC3 #elif defined(CONFIG_MGT5100) #error CONFIG_PSC_CONSOLE2 must be in 1, 2 or 3 #elif CONFIG_PSC_CONSOLE2 == 4 #define PSC_BASE2 MPC5XXX_PSC4 #elif CONFIG_PSC_CONSOLE2 == 5 #define PSC_BASE2 MPC5XXX_PSC5 #elif CONFIG_PSC_CONSOLE2 == 6 #define PSC_BASE2 MPC5XXX_PSC6 #else #error CONFIG_PSC_CONSOLE2 must be in 1 ... 6 #endif #endif /* CONFIG_SERIAL_MULTI */ #if defined(CONFIG_SERIAL_MULTI) int serial_init_dev (unsigned long dev_base) #else int serial_init (void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif unsigned long baseclk; int div; /* reset PSC */ psc->command = PSC_SEL_MODE_REG_1; /* select clock sources */ #if defined(CONFIG_MGT5100) psc->psc_clock_select = 0xdd00; baseclk = (CFG_MPC5XXX_CLKIN + 16) / 32; #elif defined(CONFIG_MPC5200) psc->psc_clock_select = 0; baseclk = (gd->ipb_clk + 16) / 32; #endif /* switch to UART mode */ psc->sicr = 0; /* configure parity, bit length and so on */ #if defined(CONFIG_MGT5100) psc->mode = PSC_MODE_ERR | PSC_MODE_8_BITS | PSC_MODE_PARNONE; #elif defined(CONFIG_MPC5200) psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE; #endif psc->mode = PSC_MODE_ONE_STOP; /* set up UART divisor */ div = (baseclk + (gd->baudrate/2)) / gd->baudrate; psc->ctur = (div >> 8) & 0xff; psc->ctlr = div & 0xff; /* disable all interrupts */ psc->psc_imr = 0; /* reset and enable Rx/Tx */ psc->command = PSC_RST_RX; psc->command = PSC_RST_TX; psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE; return (0); } #if defined(CONFIG_SERIAL_MULTI) void serial_putc_dev (unsigned long dev_base, const char c) #else void serial_putc(const char c) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif if (c == '\n') #if defined(CONFIG_SERIAL_MULTI) serial_putc_dev (dev_base, '\r'); #else serial_putc('\r'); #endif /* Wait for last character to go. */ while (!(psc->psc_status & PSC_SR_TXEMP)) ; psc->psc_buffer_8 = c; } #if defined(CONFIG_SERIAL_MULTI) void serial_putc_raw_dev(unsigned long dev_base, const char c) #else void serial_putc_raw(const char c) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif /* Wait for last character to go. */ while (!(psc->psc_status & PSC_SR_TXEMP)) ; psc->psc_buffer_8 = c; } #if defined(CONFIG_SERIAL_MULTI) void serial_puts_dev (unsigned long dev_base, const char *s) #else void serial_puts (const char *s) #endif { while (*s) { #if defined(CONFIG_SERIAL_MULTI) serial_putc_dev (dev_base, *s++); #else serial_putc (*s++); #endif } } #if defined(CONFIG_SERIAL_MULTI) int serial_getc_dev (unsigned long dev_base) #else int serial_getc(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif /* Wait for a character to arrive. */ while (!(psc->psc_status & PSC_SR_RXRDY)) ; return psc->psc_buffer_8; } #if defined(CONFIG_SERIAL_MULTI) int serial_tstc_dev (unsigned long dev_base) #else int serial_tstc(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif return (psc->psc_status & PSC_SR_RXRDY); } #if defined(CONFIG_SERIAL_MULTI) void serial_setbrg_dev (unsigned long dev_base) #else void serial_setbrg(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif unsigned long baseclk, div; #if defined(CONFIG_MGT5100) baseclk = (CFG_MPC5XXX_CLKIN + 16) / 32; #elif defined(CONFIG_MPC5200) baseclk = (gd->ipb_clk + 16) / 32; #endif /* set up UART divisor */ div = (baseclk + (gd->baudrate/2)) / gd->baudrate; psc->ctur = (div >> 8) & 0xFF; psc->ctlr = div & 0xff; } #if defined(CONFIG_SERIAL_MULTI) void serial_setrts_dev (unsigned long dev_base, int s) #else void serial_setrts(int s) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif if (s) { /* Assert RTS (become LOW) */ psc->op1 = 0x1; } else { /* Negate RTS (become HIGH) */ psc->op0 = 0x1; } } #if defined(CONFIG_SERIAL_MULTI) int serial_getcts_dev (unsigned long dev_base) #else int serial_getcts(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif return (psc->ip & 0x1) ? 0 : 1; } #if defined(CONFIG_SERIAL_MULTI) int serial0_init(void) { return (serial_init_dev(PSC_BASE)); } int serial1_init(void) { return (serial_init_dev(PSC_BASE2)); } void serial0_setbrg (void) { serial_setbrg_dev(PSC_BASE); } void serial1_setbrg (void) { serial_setbrg_dev(PSC_BASE2); } void serial0_putc(const char c) { serial_putc_dev(PSC_BASE,c); } void serial1_putc(const char c) { serial_putc_dev(PSC_BASE2, c); } void serial0_puts(const char *s) { serial_puts_dev(PSC_BASE, s); } void serial1_puts(const char *s) { serial_puts_dev(PSC_BASE2, s); } int serial0_getc(void) { return(serial_getc_dev(PSC_BASE)); } int serial1_getc(void) { return(serial_getc_dev(PSC_BASE2)); } int serial0_tstc(void) { return (serial_tstc_dev(PSC_BASE)); } int serial1_tstc(void) { return (serial_tstc_dev(PSC_BASE2)); } struct serial_device serial0_device = { "serial0", "UART0", serial0_init, serial0_setbrg, serial0_getc, serial0_tstc, serial0_putc, serial0_puts, }; struct serial_device serial1_device = { "serial1", "UART1", serial1_init, serial1_setbrg, serial1_getc, serial1_tstc, serial1_putc, serial1_puts, }; #endif /* CONFIG_SERIAL_MULTI */ #endif /* CONFIG_PSC_CONSOLE */ |