1 /* $Id: mpcsa_machdep.c,v 1.13 2020/04/18 11:00:40 skrll Exp $ */ 2 /* $NetBSD: mpcsa_machdep.c,v 1.13 2020/04/18 11:00:40 skrll Exp $ */ 3 4 /* 5 * Copyright (c) 2007 Embedtronics Oy 6 * Based on tsarm_machdep.c 7 * 8 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 9 * All rights reserved. 10 * 11 * Based on code written by Jason R. Thorpe and Steve C. Woodford for 12 * Wasabi Systems, Inc. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed for the NetBSD Project by 25 * Wasabi Systems, Inc. 26 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 27 * or promote products derived from this software without specific prior 28 * written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 40 * POSSIBILITY OF SUCH DAMAGE. 41 */ 42 43 /* 44 * Copyright (c) 1997,1998 Mark Brinicombe. 45 * Copyright (c) 1997,1998 Causality Limited. 46 * All rights reserved. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by Mark Brinicombe 59 * for the NetBSD Project. 60 * 4. The name of the company nor the name of the author may be used to 61 * endorse or promote products derived from this software without specific 62 * prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 65 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 66 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 67 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 68 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 69 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 70 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * Machine dependent functions for kernel setup for Iyonix. 77 */ 78 79 #include <sys/cdefs.h> 80 __KERNEL_RCSID(0, "$NetBSD: mpcsa_machdep.c,v 1.13 2020/04/18 11:00:40 skrll Exp $"); 81 82 #include "opt_ddb.h" 83 #include "opt_kgdb.h" 84 85 #include <sys/param.h> 86 #include <sys/device.h> 87 #include <sys/systm.h> 88 #include <sys/kernel.h> 89 #include <sys/exec.h> 90 #include <sys/proc.h> 91 #include <sys/msgbuf.h> 92 #include <sys/reboot.h> 93 #include <sys/termios.h> 94 #include <sys/ksyms.h> 95 #include <sys/bus.h> 96 #include <sys/cpu.h> 97 98 #include <uvm/uvm_extern.h> 99 100 #include <dev/cons.h> 101 102 #include <dev/ic/comreg.h> 103 #include <dev/ic/comvar.h> 104 105 #include <machine/db_machdep.h> 106 #include <ddb/db_sym.h> 107 #include <ddb/db_extern.h> 108 109 #include <arm/locore.h> 110 #include <arm/undefined.h> 111 112 #include <arm/arm32/machdep.h> 113 114 #include <arm/at91/at91reg.h> 115 #include <arm/at91/at91var.h> 116 117 #define DRAM_BLOCKS 1 118 #include <machine/bootconfig.h> 119 #include <machine/autoconf.h> 120 121 #include "seeprom.h" 122 #if NSEEPROM > 0 123 #include <net/if.h> 124 #include <net/if_ether.h> 125 #include <dev/i2c/i2cvar.h> 126 #include <dev/i2c/at24cxxvar.h> 127 #endif 128 #include <arm/at91/at91twivar.h> 129 130 #if TODO 131 #include "epcom.h" 132 #if NEPCOM > 0 133 #include <arm/ep93xx/epcomvar.h> 134 #endif 135 136 #include "isa.h" 137 #if NISA > 0 138 #include <dev/isa/isareg.h> 139 #include <dev/isa/isavar.h> 140 #endif 141 142 #include <machine/isa_machdep.h> 143 144 #include <evbarm/mpcsa/mpcsareg.h> 145 #endif // TODO 146 147 #include <arm/at91/at91rm9200reg.h> 148 #include <arm/at91/at91rm9200busvar.h> 149 150 #include "ksyms.h" 151 152 #include <arm/at91/at91busvar.h> 153 #include <arm/at91/at91pdcreg.h> 154 #include <arm/at91/at91dbgureg.h> 155 #include <arm/at91/at91reg.h> 156 #include <arm/at91/at91streg.h> 157 158 /* boot configuration: */ 159 BootConfig bootconfig; /* Boot config storage */ 160 char *boot_args = NULL; 161 char *boot_file = NULL; 162 163 /* hmmm */ 164 static struct arm32_dma_range mpcsa_dma_ranges[4]; 165 static struct at91bus_machdep mpcsabus; 166 static at91bus_tag_t old_at91bus_tag; 167 168 /* Prototypes */ 169 static void mpcsa_device_register(device_t dev, void *aux); 170 static void mpcsabus_init(struct at91bus_clocks *); 171 static void mpcsabus_peripheral_clock(int pid, int enable); 172 static uint32_t mpcsabus_gpio_mask(int pid); 173 174 175 /* 176 * void cpu_reboot(int howto, char *bootstr) 177 * 178 * Reboots the system 179 * 180 * Deal with any syncing, unmounting, dumping and shutdown hooks, 181 * then reset the CPU. 182 */ 183 void 184 cpu_reboot(int howto, char *bootstr) 185 { 186 187 /* 188 * If we are still cold then hit the air brakes 189 * and crash to earth fast 190 */ 191 if (cold) { 192 doshutdownhooks(); 193 pmf_system_shutdown(boothowto); 194 printf("\r\n"); 195 printf("The operating system has halted.\r\n"); 196 printf("Please press any key to reboot.\r\n"); 197 cngetc(); 198 printf("\r\nrebooting...\r\n"); 199 goto reset; 200 } 201 202 /* Disable console buffering */ 203 204 /* 205 * If RB_NOSYNC was not specified sync the discs. 206 * Note: Unless cold is set to 1 here, syslogd will die during the 207 * unmount. It looks like syslogd is getting woken up only to find 208 * that it cannot page part of the binary in as the filesystem has 209 * been unmounted. 210 */ 211 if (!(howto & RB_NOSYNC)) 212 bootsync(); 213 214 /* Say NO to interrupts */ 215 splhigh(); 216 217 /* Do a dump if requested. */ 218 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 219 dumpsys(); 220 221 /* Run any shutdown hooks */ 222 doshutdownhooks(); 223 224 pmf_system_shutdown(boothowto); 225 226 /* Make sure IRQ's are disabled */ 227 IRQdisable; 228 229 if (howto & RB_HALT) { 230 printf("\r\n"); 231 printf("The operating system has halted.\r\n"); 232 printf("Please press any key to reboot.\r\n"); 233 cngetc(); 234 } 235 236 printf("\r\nrebooting...\r\n"); 237 reset: 238 /* 239 * Make really really sure that all interrupts are disabled, 240 * and poke the Internal Bus and Peripheral Bus reset lines. 241 */ 242 (void) disable_interrupts(I32_bit|F32_bit); 243 STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1; 244 STREG(ST_CR) = ST_CR_WDRST; 245 for (;;); 246 } 247 248 /* 249 * vaddr_t initarm(...) 250 * 251 * Initial entry point on startup. This gets called before main() is 252 * entered. 253 * It should be responsible for setting up everything that must be 254 * in place when main is called. 255 * This includes 256 * Taking a copy of the boot configuration structure. 257 * Initialising the physical console so characters can be printed. 258 * Setting up page tables for the kernel 259 * Initialising interrupt controllers to a sane default state 260 */ 261 vaddr_t 262 initarm(void *arg) 263 { 264 vaddr_t sp; 265 /* 266 * basic AT91 initialization: 267 */ 268 if (at91bus_init()) 269 panic("%s: at91bus_init() failed", __FUNCTION__); 270 271 if (AT91_CHIP_ID() == AT91RM9200_CHIP_ID) { 272 memcpy(&mpcsabus, at91bus_tag, sizeof(mpcsabus)); 273 mpcsabus.init = mpcsabus_init; 274 mpcsabus.peripheral_clock = mpcsabus_peripheral_clock; 275 mpcsabus.gpio_mask = mpcsabus_gpio_mask; 276 old_at91bus_tag = at91bus_tag; 277 at91bus_tag = &mpcsabus; 278 } 279 280 /* Fake bootconfig structure for the benefit of pmap.c */ 281 /* XXX must make the memory description h/w independent */ 282 bootconfig.dramblocks = 1; 283 bootconfig.dram[0].address = 0x20000000UL; 284 bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE; 285 sp = at91bus_setup(&bootconfig); 286 287 if (AT91_CHIP_ID() != AT91RM9200_CHIP_ID) 288 panic("%s: processor is not AT91RM9200", __FUNCTION__); 289 290 /* we've a specific device_register routine */ 291 evbarm_device_register = mpcsa_device_register; 292 293 /* We return the new stack pointer address */ 294 return sp; 295 } 296 297 298 bus_dma_tag_t 299 at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) 300 { 301 int i; 302 struct arm32_bus_dma_tag *dmat; 303 304 for (i = 0; i < bootconfig.dramblocks; i++) { 305 mpcsa_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; 306 mpcsa_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; 307 mpcsa_dma_ranges[i].dr_len = bootconfig.dram[i].pages * 308 PAGE_SIZE; 309 } 310 311 dmat = dma_tag_template; 312 313 dmat->_ranges = mpcsa_dma_ranges; 314 dmat->_nranges = bootconfig.dramblocks; 315 316 return dmat; 317 } 318 319 void mpcsabus_init(struct at91bus_clocks *clocks) 320 { 321 (*old_at91bus_tag->init)(clocks); 322 } 323 324 uint32_t mpcsabus_gpio_mask(int pid) 325 { 326 switch (pid) { 327 case PID_PIOA: return ~0x00000300U; 328 case PID_PIOB: return ~0x0000783FU; 329 case PID_PIOC: return ~0x00000000U; 330 case PID_PIOD: return ~0x0003F000U; 331 default: return ~0x00000000U; 332 } 333 } 334 335 void mpcsabus_peripheral_clock(int pid, int enable) 336 { 337 switch (pid) { 338 case PID_TWI: 339 if (enable) { 340 PIOA_WRITE(PIO_ASR, 0x06000000); // assign to peripheral A 341 PIOA_WRITE(PIO_PDR, 0x06000000); // assign to peripherals 342 PIOA_WRITE(PIO_MDER, 0x06000000); // I2C pins in open-drain mode 343 } 344 break; 345 346 case PID_SPI: 347 if (enable) { 348 PIOA_WRITE(PIO_ASR, 0x00000007); // assign to peripheral A 349 PIOA_WRITE(PIO_PDR, 0x00000007); // assign to peripherals 350 } 351 break; 352 } 353 (*old_at91bus_tag->peripheral_clock)(pid, enable); 354 } 355 356 357 static void mpcsa_device_register(device_t dev, void *aux) 358 { 359 static uint8_t eth_addr[ETHER_ADDR_LEN]; 360 361 if (device_is_a(dev, "at91emac")) { 362 cfdriver_t cd = config_cfdriver_lookup("at91twi"); 363 device_t twi_dev = 0; 364 i2c_tag_t i2c = 0; 365 if (cd && (twi_dev = device_lookup(cd, 0)) != NULL) { 366 struct at91twi_softc *sc = device_private(twi_dev); 367 i2c = &sc->sc_i2c; 368 } 369 if (i2c && seeprom_bootstrap_read(i2c, 0x50, 0x00, 4096, 370 eth_addr, ETHER_ADDR_LEN) == 0) { 371 prop_data_t pd = prop_data_create_data_nocopy( 372 eth_addr, ETHER_ADDR_LEN); 373 KASSERT(pd != NULL); 374 if (prop_dictionary_set(device_properties(dev), 375 "mac-address", pd) == FALSE) { 376 printf("WARNING: unable to set mac-addr property " 377 "for %s\n", device_xname(dev)); 378 } 379 } else { 380 printf("%s: WARNING: unable to read MAC address from SEEPROM\n", 381 device_xname(dev)); 382 } 383 } 384 } 385
Indexes created Sat Sep 27 22:09:54 GMT 2025