1 /* $Id: mmnet_machdep.c,v 1.6 2020/04/18 11:00:40 skrll Exp $ */ 2 /* $NetBSD: mmnet_machdep.c,v 1.6 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 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 1.6 2020/04/18 11:00:40 skrll Exp $"); 82 83 #include "opt_ddb.h" 84 #include "opt_kgdb.h" 85 86 #include <sys/param.h> 87 #include <sys/bus.h> 88 #include <sys/device.h> 89 #include <sys/systm.h> 90 #include <sys/kernel.h> 91 #include <sys/exec.h> 92 #include <sys/proc.h> 93 #include <sys/msgbuf.h> 94 #include <sys/reboot.h> 95 #include <sys/termios.h> 96 #include <sys/ksyms.h> 97 98 #include <uvm/uvm_extern.h> 99 100 #include <dev/cons.h> 101 102 #include <machine/db_machdep.h> 103 #include <ddb/db_sym.h> 104 #include <ddb/db_extern.h> 105 106 #define DRAM_BLOCKS 1 107 #include <machine/bootconfig.h> 108 #include <machine/cpu.h> 109 #include <machine/frame.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 #include <dev/ic/comreg.h> 118 #include <dev/ic/comvar.h> 119 120 #include <machine/autoconf.h> 121 122 #include "isa.h" 123 124 #include <arm/at91/at91sam9260reg.h> 125 #include <arm/at91/at91sam9260busvar.h> 126 127 #include "ksyms.h" 128 129 #include <arm/at91/at91busvar.h> 130 #include <arm/at91/at91pdcreg.h> 131 #include <arm/at91/at91dbgureg.h> 132 #include <arm/at91/at91reg.h> 133 #include <arm/at91/at91streg.h> 134 135 /* boot configuration: */ 136 BootConfig bootconfig; /* Boot config storage */ 137 char *boot_args = NULL; 138 char *boot_file = NULL; 139 140 /* hmmm */ 141 static struct arm32_dma_range mmnet_dma_ranges[4]; 142 static struct at91bus_machdep mmnetbus; 143 static at91bus_tag_t old_at91bus_tag; 144 145 /* Prototypes */ 146 static void mmnet_device_register(device_t dev, void *aux); 147 static void mmnetbus_init(struct at91bus_clocks *); 148 static void mmnetbus_peripheral_clock(int pid, int enable); 149 static uint32_t mmnetbus_gpio_mask(int pid); 150 151 152 /* 153 * void cpu_reboot(int howto, char *bootstr) 154 * 155 * Reboots the system 156 * 157 * Deal with any syncing, unmounting, dumping and shutdown hooks, 158 * then reset the CPU. 159 */ 160 void 161 cpu_reboot(int howto, char *bootstr) 162 { 163 164 /* 165 * If we are still cold then hit the air brakes 166 * and crash to earth fast 167 */ 168 if (cold) { 169 doshutdownhooks(); 170 pmf_system_shutdown(boothowto); 171 printf("\r\n"); 172 printf("The operating system has halted.\r\n"); 173 printf("Please press any key to reboot.\r\n"); 174 cngetc(); 175 printf("\r\nrebooting...\r\n"); 176 goto reset; 177 } 178 179 /* Disable console buffering */ 180 181 /* 182 * If RB_NOSYNC was not specified sync the discs. 183 * Note: Unless cold is set to 1 here, syslogd will die during the 184 * unmount. It looks like syslogd is getting woken up only to find 185 * that it cannot page part of the binary in as the filesystem has 186 * been unmounted. 187 */ 188 if (!(howto & RB_NOSYNC)) 189 bootsync(); 190 191 /* Say NO to interrupts */ 192 splhigh(); 193 194 /* Do a dump if requested. */ 195 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 196 dumpsys(); 197 198 /* Run any shutdown hooks */ 199 doshutdownhooks(); 200 201 pmf_system_shutdown(boothowto); 202 203 /* Make sure IRQ's are disabled */ 204 IRQdisable; 205 206 if (howto & RB_HALT) { 207 printf("\r\n"); 208 printf("The operating system has halted.\r\n"); 209 printf("Please press any key to reboot.\r\n"); 210 cngetc(); 211 } 212 213 printf("\r\nrebooting...\r\n"); 214 reset: 215 /* 216 * Make really really sure that all interrupts are disabled, 217 * and poke the Internal Bus and Peripheral Bus reset lines. 218 */ 219 (void) disable_interrupts(I32_bit|F32_bit); 220 STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1; 221 STREG(ST_CR) = ST_CR_WDRST; 222 for (;;); 223 } 224 225 /* 226 * vaddr_t initarm(...) 227 * 228 * Initial entry point on startup. This gets called before main() is 229 * entered. 230 * It should be responsible for setting up everything that must be 231 * in place when main is called. 232 * This includes 233 * Taking a copy of the boot configuration structure. 234 * Initialising the physical console so characters can be printed. 235 * Setting up page tables for the kernel 236 * Initialising interrupt controllers to a sane default state 237 */ 238 vaddr_t 239 initarm(void *arg) 240 { 241 vaddr_t sp; 242 /* 243 * basic AT91 initialization: 244 */ 245 if (at91bus_init()) 246 panic("%s: at91bus_init() failed", __FUNCTION__); 247 248 if (AT91_CHIP_ID() == AT91SAM9260_CHIP_ID) { 249 memcpy(&mmnetbus, at91bus_tag, sizeof(mmnetbus)); 250 mmnetbus.init = mmnetbus_init; 251 mmnetbus.peripheral_clock = mmnetbus_peripheral_clock; 252 mmnetbus.gpio_mask = mmnetbus_gpio_mask; 253 old_at91bus_tag = at91bus_tag; 254 at91bus_tag = &mmnetbus; 255 } 256 257 /* Fake bootconfig structure for the benefit of pmap.c */ 258 /* XXX must make the memory description h/w independent */ 259 bootconfig.dramblocks = 1; 260 bootconfig.dram[0].address = 0x20000000UL; 261 bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE; 262 sp = at91bus_setup(&bootconfig); 263 264 if (AT91_CHIP_ID() != AT91SAM9260_CHIP_ID) 265 panic("%s: processor is not AT91SAM9260", __FUNCTION__); 266 267 /* we've a specific device_register routine */ 268 evbarm_device_register = mmnet_device_register; 269 270 /* We return the new stack pointer address */ 271 return sp; 272 } 273 274 275 bus_dma_tag_t 276 at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) 277 { 278 int i; 279 struct arm32_bus_dma_tag *dmat; 280 281 for (i = 0; i < bootconfig.dramblocks; i++) { 282 mmnet_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; 283 mmnet_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; 284 mmnet_dma_ranges[i].dr_len = bootconfig.dram[i].pages * 285 PAGE_SIZE; 286 } 287 288 dmat = dma_tag_template; 289 290 dmat->_ranges = mmnet_dma_ranges; 291 dmat->_nranges = bootconfig.dramblocks; 292 293 return dmat; 294 } 295 296 void mmnetbus_init(struct at91bus_clocks *clocks) 297 { 298 (*old_at91bus_tag->init)(clocks); 299 } 300 301 uint32_t mmnetbus_gpio_mask(int pid) 302 { 303 switch (pid) { 304 case PID_PIOA: return ~0x00000300U; 305 case PID_PIOB: return ~0x0000783FU; 306 case PID_PIOC: return ~0x00000000U; 307 default: return ~0x00000000U; 308 } 309 } 310 311 void mmnetbus_peripheral_clock(int pid, int enable) 312 { 313 switch (pid) { 314 case PID_TWI: 315 if (enable) { 316 PIOA_WRITE(PIO_ASR, 0x06000000); 317 PIOA_WRITE(PIO_PDR, 0x06000000); 318 PIOA_WRITE(PIO_MDER, 0x06000000); 319 } 320 break; 321 322 case PID_SPI0: 323 if (enable) { 324 PIOA_WRITE(PIO_ASR, 0x0000000f); 325 PIOA_WRITE(PIO_PDR, 0x0000000f); 326 } 327 break; 328 329 case PID_SPI1: 330 if (enable) { 331 PIOB_WRITE(PIO_ASR, 0x0000000f); 332 PIOB_WRITE(PIO_PDR, 0x0000000f); 333 } 334 break; 335 } 336 (*old_at91bus_tag->peripheral_clock)(pid, enable); 337 } 338 339 340 static void mmnet_device_register(device_t dev, void *aux) 341 { 342 #if 0 343 if (device_is_a(dev, "at91semac")) { 344 // propagate mac address from u-boot 345 } 346 #endif 347 } 348
Indexes created Sat Sep 20 22:09:52 GMT 2025