1 /* $Id: mmnet_machdep.c,v 1.2 2012/08/16 18:22:45 matt Exp $ */ 2 /* $NetBSD: mmnet_machdep.c,v 1.2 2012/08/16 18:22:45 matt 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 dependant functions for kernel setup for Iyonix. 77 */ 78 /* Adaptation for Propox MMnet by Aymeric Vincent is in the public domain */ 79 80 #include <sys/cdefs.h> 81 __KERNEL_RCSID(0, "$NetBSD: mmnet_machdep.c,v 1.2 2012/08/16 18:22:45 matt Exp $"); 82 83 #include "opt_ddb.h" 84 #include "opt_kgdb.h" 85 #include "opt_pmap_debug.h" 86 87 #include <sys/param.h> 88 #include <sys/bus.h> 89 #include <sys/device.h> 90 #include <sys/systm.h> 91 #include <sys/kernel.h> 92 #include <sys/exec.h> 93 #include <sys/proc.h> 94 #include <sys/msgbuf.h> 95 #include <sys/reboot.h> 96 #include <sys/termios.h> 97 #include <sys/ksyms.h> 98 99 #include <uvm/uvm_extern.h> 100 101 #include <dev/cons.h> 102 103 #include <machine/db_machdep.h> 104 #include <ddb/db_sym.h> 105 #include <ddb/db_extern.h> 106 107 #define DRAM_BLOCKS 1 108 #include <machine/bootconfig.h> 109 #include <machine/cpu.h> 110 #include <machine/frame.h> 111 #include <arm/undefined.h> 112 113 #include <arm/arm32/machdep.h> 114 115 #include <arm/at91/at91reg.h> 116 #include <arm/at91/at91var.h> 117 118 #include <dev/ic/comreg.h> 119 #include <dev/ic/comvar.h> 120 121 #include <machine/autoconf.h> 122 123 #include "isa.h" 124 125 #include <arm/at91/at91sam9260reg.h> 126 #include <arm/at91/at91sam9260busvar.h> 127 128 #include "opt_ipkdb.h" 129 #include "ksyms.h" 130 131 #include <arm/at91/at91busvar.h> 132 #include <arm/at91/at91pdcreg.h> 133 #include <arm/at91/at91dbgureg.h> 134 #include <arm/at91/at91reg.h> 135 #include <arm/at91/at91streg.h> 136 137 /* boot configuration: */ 138 BootConfig bootconfig; /* Boot config storage */ 139 char *boot_args = NULL; 140 char *boot_file = NULL; 141 142 /* hmmm */ 143 static struct arm32_dma_range mmnet_dma_ranges[4]; 144 static struct at91bus_machdep mmnetbus; 145 static at91bus_tag_t old_at91bus_tag; 146 147 /* Prototypes */ 148 static void mmnet_device_register(device_t dev, void *aux); 149 static void mmnetbus_init(struct at91bus_clocks *); 150 static void mmnetbus_peripheral_clock(int pid, int enable); 151 static uint32_t mmnetbus_gpio_mask(int pid); 152 153 154 /* 155 * void cpu_reboot(int howto, char *bootstr) 156 * 157 * Reboots the system 158 * 159 * Deal with any syncing, unmounting, dumping and shutdown hooks, 160 * then reset the CPU. 161 */ 162 void 163 cpu_reboot(int howto, char *bootstr) 164 { 165 166 /* 167 * If we are still cold then hit the air brakes 168 * and crash to earth fast 169 */ 170 if (cold) { 171 doshutdownhooks(); 172 pmf_system_shutdown(boothowto); 173 printf("\r\n"); 174 printf("The operating system has halted.\r\n"); 175 printf("Please press any key to reboot.\r\n"); 176 cngetc(); 177 printf("\r\nrebooting...\r\n"); 178 goto reset; 179 } 180 181 /* Disable console buffering */ 182 183 /* 184 * If RB_NOSYNC was not specified sync the discs. 185 * Note: Unless cold is set to 1 here, syslogd will die during the 186 * unmount. It looks like syslogd is getting woken up only to find 187 * that it cannot page part of the binary in as the filesystem has 188 * been unmounted. 189 */ 190 if (!(howto & RB_NOSYNC)) 191 bootsync(); 192 193 /* Say NO to interrupts */ 194 splhigh(); 195 196 /* Do a dump if requested. */ 197 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 198 dumpsys(); 199 200 /* Run any shutdown hooks */ 201 doshutdownhooks(); 202 203 pmf_system_shutdown(boothowto); 204 205 /* Make sure IRQ's are disabled */ 206 IRQdisable; 207 208 if (howto & RB_HALT) { 209 printf("\r\n"); 210 printf("The operating system has halted.\r\n"); 211 printf("Please press any key to reboot.\r\n"); 212 cngetc(); 213 } 214 215 printf("\r\nrebooting...\r\n"); 216 reset: 217 /* 218 * Make really really sure that all interrupts are disabled, 219 * and poke the Internal Bus and Peripheral Bus reset lines. 220 */ 221 (void) disable_interrupts(I32_bit|F32_bit); 222 STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1; 223 STREG(ST_CR) = ST_CR_WDRST; 224 for (;;); 225 } 226 227 /* 228 * u_int initarm(...) 229 * 230 * Initial entry point on startup. This gets called before main() is 231 * entered. 232 * It should be responsible for setting up everything that must be 233 * in place when main is called. 234 * This includes 235 * Taking a copy of the boot configuration structure. 236 * Initialising the physical console so characters can be printed. 237 * Setting up page tables for the kernel 238 * Initialising interrupt controllers to a sane default state 239 */ 240 u_int 241 initarm(void *arg) 242 { 243 u_int ret; 244 /* 245 * basic AT91 initialization: 246 */ 247 if (at91bus_init()) 248 panic("%s: at91bus_init() failed", __FUNCTION__); 249 250 if (AT91_CHIP_ID() == AT91SAM9260_CHIP_ID) { 251 memcpy(&mmnetbus, at91bus_tag, sizeof(mmnetbus)); 252 mmnetbus.init = mmnetbus_init; 253 mmnetbus.peripheral_clock = mmnetbus_peripheral_clock; 254 mmnetbus.gpio_mask = mmnetbus_gpio_mask; 255 old_at91bus_tag = at91bus_tag; 256 at91bus_tag = &mmnetbus; 257 } 258 259 /* Fake bootconfig structure for the benefit of pmap.c */ 260 /* XXX must make the memory description h/w independent */ 261 bootconfig.dramblocks = 1; 262 bootconfig.dram[0].address = 0x20000000UL; 263 bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE; 264 ret = at91bus_setup(&bootconfig); 265 266 if (AT91_CHIP_ID() != AT91SAM9260_CHIP_ID) 267 panic("%s: processor is not AT91SAM9260", __FUNCTION__); 268 269 /* we've a specific device_register routine */ 270 evbarm_device_register = mmnet_device_register; 271 272 /* We return the new stack pointer address */ 273 return ret; 274 } 275 276 277 bus_dma_tag_t 278 at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) 279 { 280 int i; 281 struct arm32_bus_dma_tag *dmat; 282 283 for (i = 0; i < bootconfig.dramblocks; i++) { 284 mmnet_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; 285 mmnet_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; 286 mmnet_dma_ranges[i].dr_len = bootconfig.dram[i].pages * 287 PAGE_SIZE; 288 } 289 290 dmat = dma_tag_template; 291 292 dmat->_ranges = mmnet_dma_ranges; 293 dmat->_nranges = bootconfig.dramblocks; 294 295 return dmat; 296 } 297 298 void mmnetbus_init(struct at91bus_clocks *clocks) 299 { 300 (*old_at91bus_tag->init)(clocks); 301 } 302 303 uint32_t mmnetbus_gpio_mask(int pid) 304 { 305 switch (pid) { 306 case PID_PIOA: return ~0x00000300U; 307 case PID_PIOB: return ~0x0000783FU; 308 case PID_PIOC: return ~0x00000000U; 309 default: return ~0x00000000U; 310 } 311 } 312 313 void mmnetbus_peripheral_clock(int pid, int enable) 314 { 315 switch (pid) { 316 case PID_TWI: 317 if (enable) { 318 PIOA_WRITE(PIO_ASR, 0x06000000); 319 PIOA_WRITE(PIO_PDR, 0x06000000); 320 PIOA_WRITE(PIO_MDER, 0x06000000); 321 } 322 break; 323 324 case PID_SPI0: 325 if (enable) { 326 PIOA_WRITE(PIO_ASR, 0x0000000f); 327 PIOA_WRITE(PIO_PDR, 0x0000000f); 328 } 329 break; 330 331 case PID_SPI1: 332 if (enable) { 333 PIOB_WRITE(PIO_ASR, 0x0000000f); 334 PIOB_WRITE(PIO_PDR, 0x0000000f); 335 } 336 break; 337 } 338 (*old_at91bus_tag->peripheral_clock)(pid, enable); 339 } 340 341 342 static void mmnet_device_register(device_t dev, void *aux) 343 { 344 #if 0 345 if (device_is_a(dev, "at91semac")) { 346 // propagate mac address from u-boot 347 } 348 #endif 349 } 350