mmnet_machdep.c revision 1.1.2.2
1 /* $Id: mmnet_machdep.c,v 1.1.2.2 2011/11/10 14:31:40 yamt Exp $ */ 2 /* $NetBSD: mmnet_machdep.c,v 1.1.2.2 2011/11/10 14:31:40 yamt 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 1.1.2.2 2011/11/10 14:31:40 yamt 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 /* 138 * Address to call from cpu_reset() to reset the machine. 139 * This is machine architecture dependant as it varies depending 140 * on where the ROM appears when you turn the MMU off. 141 */ 142 143 u_int cpu_reset_address = 0x00000000; 144 145 146 /* boot configuration: */ 147 BootConfig bootconfig; /* Boot config storage */ 148 char *boot_args = NULL; 149 char *boot_file = NULL; 150 151 /* hmmm */ 152 static struct arm32_dma_range mmnet_dma_ranges[4]; 153 static struct at91bus_machdep mmnetbus; 154 static at91bus_tag_t old_at91bus_tag; 155 156 /* Prototypes */ 157 static void mmnet_device_register(device_t dev, void *aux); 158 static void mmnetbus_init(struct at91bus_clocks *); 159 static void mmnetbus_peripheral_clock(int pid, int enable); 160 static uint32_t mmnetbus_gpio_mask(int pid); 161 162 163 /* 164 * void cpu_reboot(int howto, char *bootstr) 165 * 166 * Reboots the system 167 * 168 * Deal with any syncing, unmounting, dumping and shutdown hooks, 169 * then reset the CPU. 170 */ 171 void 172 cpu_reboot(int howto, char *bootstr) 173 { 174 175 /* 176 * If we are still cold then hit the air brakes 177 * and crash to earth fast 178 */ 179 if (cold) { 180 doshutdownhooks(); 181 pmf_system_shutdown(boothowto); 182 printf("\r\n"); 183 printf("The operating system has halted.\r\n"); 184 printf("Please press any key to reboot.\r\n"); 185 cngetc(); 186 printf("\r\nrebooting...\r\n"); 187 goto reset; 188 } 189 190 /* Disable console buffering */ 191 192 /* 193 * If RB_NOSYNC was not specified sync the discs. 194 * Note: Unless cold is set to 1 here, syslogd will die during the 195 * unmount. It looks like syslogd is getting woken up only to find 196 * that it cannot page part of the binary in as the filesystem has 197 * been unmounted. 198 */ 199 if (!(howto & RB_NOSYNC)) 200 bootsync(); 201 202 /* Say NO to interrupts */ 203 splhigh(); 204 205 /* Do a dump if requested. */ 206 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 207 dumpsys(); 208 209 /* Run any shutdown hooks */ 210 doshutdownhooks(); 211 212 pmf_system_shutdown(boothowto); 213 214 /* Make sure IRQ's are disabled */ 215 IRQdisable; 216 217 if (howto & RB_HALT) { 218 printf("\r\n"); 219 printf("The operating system has halted.\r\n"); 220 printf("Please press any key to reboot.\r\n"); 221 cngetc(); 222 } 223 224 printf("\r\nrebooting...\r\n"); 225 reset: 226 /* 227 * Make really really sure that all interrupts are disabled, 228 * and poke the Internal Bus and Peripheral Bus reset lines. 229 */ 230 (void) disable_interrupts(I32_bit|F32_bit); 231 STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1; 232 STREG(ST_CR) = ST_CR_WDRST; 233 for (;;); 234 } 235 236 /* 237 * u_int initarm(...) 238 * 239 * Initial entry point on startup. This gets called before main() is 240 * entered. 241 * It should be responsible for setting up everything that must be 242 * in place when main is called. 243 * This includes 244 * Taking a copy of the boot configuration structure. 245 * Initialising the physical console so characters can be printed. 246 * Setting up page tables for the kernel 247 * Initialising interrupt controllers to a sane default state 248 */ 249 u_int 250 initarm(void *arg) 251 { 252 u_int ret; 253 /* 254 * basic AT91 initialization: 255 */ 256 if (at91bus_init()) 257 panic("%s: at91bus_init() failed", __FUNCTION__); 258 259 if (AT91_CHIP_ID() == AT91SAM9260_CHIP_ID) { 260 memcpy(&mmnetbus, at91bus_tag, sizeof(mmnetbus)); 261 mmnetbus.init = mmnetbus_init; 262 mmnetbus.peripheral_clock = mmnetbus_peripheral_clock; 263 mmnetbus.gpio_mask = mmnetbus_gpio_mask; 264 old_at91bus_tag = at91bus_tag; 265 at91bus_tag = &mmnetbus; 266 } 267 268 /* Fake bootconfig structure for the benefit of pmap.c */ 269 /* XXX must make the memory description h/w independent */ 270 bootconfig.dramblocks = 1; 271 bootconfig.dram[0].address = 0x20000000UL; 272 bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE; 273 ret = at91bus_setup(&bootconfig); 274 275 if (AT91_CHIP_ID() != AT91SAM9260_CHIP_ID) 276 panic("%s: processor is not AT91SAM9260", __FUNCTION__); 277 278 /* we've a specific device_register routine */ 279 evbarm_device_register = mmnet_device_register; 280 281 /* We return the new stack pointer address */ 282 return ret; 283 } 284 285 286 bus_dma_tag_t 287 at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) 288 { 289 int i; 290 struct arm32_bus_dma_tag *dmat; 291 292 for (i = 0; i < bootconfig.dramblocks; i++) { 293 mmnet_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; 294 mmnet_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; 295 mmnet_dma_ranges[i].dr_len = bootconfig.dram[i].pages * 296 PAGE_SIZE; 297 } 298 299 dmat = dma_tag_template; 300 301 dmat->_ranges = mmnet_dma_ranges; 302 dmat->_nranges = bootconfig.dramblocks; 303 304 return dmat; 305 } 306 307 void mmnetbus_init(struct at91bus_clocks *clocks) 308 { 309 (*old_at91bus_tag->init)(clocks); 310 } 311 312 uint32_t mmnetbus_gpio_mask(int pid) 313 { 314 switch (pid) { 315 case PID_PIOA: return ~0x00000300U; 316 case PID_PIOB: return ~0x0000783FU; 317 case PID_PIOC: return ~0x00000000U; 318 default: return ~0x00000000U; 319 } 320 } 321 322 void mmnetbus_peripheral_clock(int pid, int enable) 323 { 324 switch (pid) { 325 case PID_TWI: 326 if (enable) { 327 PIOA_WRITE(PIO_ASR, 0x06000000); 328 PIOA_WRITE(PIO_PDR, 0x06000000); 329 PIOA_WRITE(PIO_MDER, 0x06000000); 330 } 331 break; 332 333 case PID_SPI0: 334 if (enable) { 335 PIOA_WRITE(PIO_ASR, 0x0000000f); 336 PIOA_WRITE(PIO_PDR, 0x0000000f); 337 } 338 break; 339 340 case PID_SPI1: 341 if (enable) { 342 PIOB_WRITE(PIO_ASR, 0x0000000f); 343 PIOB_WRITE(PIO_PDR, 0x0000000f); 344 } 345 break; 346 } 347 (*old_at91bus_tag->peripheral_clock)(pid, enable); 348 } 349 350 351 static void mmnet_device_register(device_t dev, void *aux) 352 { 353 #if 0 354 if (device_is_a(dev, "at91semac")) { 355 // propagate mac address from u-boot 356 } 357 #endif 358 } 359
Indexes created Thu Oct 23 22:10:10 GMT 2025