integrator_machdep.c revision 1.74
1 /* $NetBSD: integrator_machdep.c,v 1.74 2013/08/18 15:58:20 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2001,2002 ARM Ltd 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the company may not be used to endorse or promote 16 * products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARM LTD 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1997,1998 Mark Brinicombe. 34 * Copyright (c) 1997,1998 Causality Limited. 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Mark Brinicombe 48 * for the NetBSD Project. 49 * 4. The name of the company nor the name of the author may be used to 50 * endorse or promote products derived from this software without specific 51 * prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 54 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 55 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 57 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 58 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 59 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * Machine dependent functions for kernel setup for integrator board 66 * 67 * Created : 24/11/97 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.74 2013/08/18 15:58:20 matt Exp $"); 72 73 #include "opt_ddb.h" 74 #include "opt_pmap_debug.h" 75 76 #include <sys/param.h> 77 #include <sys/device.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/exec.h> 81 #include <sys/proc.h> 82 #include <sys/msgbuf.h> 83 #include <sys/reboot.h> 84 #include <sys/termios.h> 85 #include <sys/ksyms.h> 86 #include <sys/bus.h> 87 #include <sys/cpu.h> 88 #include <sys/intr.h> 89 90 #include <uvm/uvm_extern.h> 91 92 #include <dev/cons.h> 93 94 #include <machine/db_machdep.h> 95 #include <ddb/db_sym.h> 96 #include <ddb/db_extern.h> 97 98 #include <machine/bootconfig.h> 99 #include <arm/locore.h> 100 #include <arm/undefined.h> 101 102 #include <arm/arm32/machdep.h> 103 104 #include <evbarm/integrator/integrator_boot.h> 105 106 #include "pci.h" 107 #include "ksyms.h" 108 109 void ifpga_reset(void) __attribute__((noreturn)); 110 111 /* 112 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 113 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 114 */ 115 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 116 #define KERNEL_VM_SIZE 0x0C000000 117 118 BootConfig bootconfig; /* Boot config storage */ 119 char *boot_args = NULL; 120 char *boot_file = NULL; 121 122 /* Prototypes */ 123 124 static void integrator_sdram_bounds (paddr_t *, psize_t *); 125 126 void consinit(void); 127 128 /* A load of console goo. */ 129 #include "vga.h" 130 #if NVGA > 0 131 #include <dev/ic/mc6845reg.h> 132 #include <dev/ic/pcdisplayvar.h> 133 #include <dev/ic/vgareg.h> 134 #include <dev/ic/vgavar.h> 135 #endif 136 137 #include "pckbc.h" 138 #if NPCKBC > 0 139 #include <dev/ic/i8042reg.h> 140 #include <dev/ic/pckbcvar.h> 141 #endif 142 143 #include "com.h" 144 #if NCOM > 0 145 #include <dev/ic/comreg.h> 146 #include <dev/ic/comvar.h> 147 #ifndef CONCOMADDR 148 #define CONCOMADDR 0x3f8 149 #endif 150 #endif 151 152 /* 153 * Define the default console speed for the board. This is generally 154 * what the firmware provided with the board defaults to. 155 */ 156 #ifndef CONSPEED 157 #define CONSPEED B115200 158 #endif 159 #ifndef CONMODE 160 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 161 #endif 162 163 int comcnspeed = CONSPEED; 164 int comcnmode = CONMODE; 165 166 #include "plcom.h" 167 #if (NPLCOM > 0) 168 #include <evbarm/dev/plcomreg.h> 169 #include <evbarm/dev/plcomvar.h> 170 171 #include <evbarm/ifpga/ifpgamem.h> 172 #include <evbarm/ifpga/ifpgareg.h> 173 #include <evbarm/ifpga/ifpgavar.h> 174 #endif 175 176 #ifndef CONSDEVNAME 177 #define CONSDEVNAME "plcom" 178 #endif 179 180 #ifndef PLCONSPEED 181 #define PLCONSPEED B38400 182 #endif 183 #ifndef PLCONMODE 184 #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 185 #endif 186 #ifndef PLCOMCNUNIT 187 #define PLCOMCNUNIT -1 188 #endif 189 190 int plcomcnspeed = PLCONSPEED; 191 int plcomcnmode = PLCONMODE; 192 193 #if 0 194 extern struct consdev kcomcons; 195 static void kcomcnputc(dev_t, int); 196 #endif 197 198 /* 199 * void cpu_reboot(int howto, char *bootstr) 200 * 201 * Reboots the system 202 * 203 * Deal with any syncing, unmounting, dumping and shutdown hooks, 204 * then reset the CPU. 205 */ 206 void 207 cpu_reboot(int howto, char *bootstr) 208 { 209 210 /* 211 * If we are still cold then hit the air brakes 212 * and crash to earth fast 213 */ 214 if (cold) { 215 doshutdownhooks(); 216 pmf_system_shutdown(boothowto); 217 printf("The operating system has halted.\n"); 218 printf("Please press any key to reboot.\n\n"); 219 cngetc(); 220 printf("rebooting...\n"); 221 ifpga_reset(); 222 /*NOTREACHED*/ 223 } 224 225 /* Disable console buffering */ 226 227 /* 228 * If RB_NOSYNC was not specified sync the discs. 229 * Note: Unless cold is set to 1 here, syslogd will die during the 230 * unmount. It looks like syslogd is getting woken up only to find 231 * that it cannot page part of the binary in as the filesystem has 232 * been unmounted. 233 */ 234 if (!(howto & RB_NOSYNC)) 235 bootsync(); 236 237 /* Say NO to interrupts */ 238 splhigh(); 239 240 /* Do a dump if requested. */ 241 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 242 dumpsys(); 243 244 /* Run any shutdown hooks */ 245 doshutdownhooks(); 246 247 pmf_system_shutdown(boothowto); 248 249 /* Make sure IRQ's are disabled */ 250 IRQdisable; 251 252 if (howto & RB_HALT) { 253 printf("The operating system has halted.\n"); 254 printf("Please press any key to reboot.\n\n"); 255 cngetc(); 256 } 257 258 printf("rebooting...\n"); 259 ifpga_reset(); 260 /*NOTREACHED*/ 261 } 262 263 /* Statically mapped devices. */ 264 static const struct pmap_devmap integrator_devmap[] = { 265 #if NPLCOM > 0 && defined(PLCONSOLE) 266 { 267 UART0_BOOT_BASE, 268 IFPGA_IO_BASE + IFPGA_UART0, 269 1024 * 1024, 270 VM_PROT_READ|VM_PROT_WRITE, 271 PTE_NOCACHE 272 }, 273 274 { 275 UART1_BOOT_BASE, 276 IFPGA_IO_BASE + IFPGA_UART1, 277 1024 * 1024, 278 VM_PROT_READ|VM_PROT_WRITE, 279 PTE_NOCACHE 280 }, 281 #endif 282 #if NPCI > 0 283 { 284 IFPGA_PCI_IO_VBASE, 285 IFPGA_PCI_IO_BASE, 286 IFPGA_PCI_IO_VSIZE, 287 VM_PROT_READ|VM_PROT_WRITE, 288 PTE_NOCACHE 289 }, 290 291 { 292 IFPGA_PCI_CONF_VBASE, 293 IFPGA_PCI_CONF_BASE, 294 IFPGA_PCI_CONF_VSIZE, 295 VM_PROT_READ|VM_PROT_WRITE, 296 PTE_NOCACHE 297 }, 298 #endif 299 300 { 301 0, 302 0, 303 0, 304 0, 305 0 306 } 307 }; 308 309 /* 310 * u_int initarm(...) 311 * 312 * Initial entry point on startup. This gets called before main() is 313 * entered. 314 * It should be responsible for setting up everything that must be 315 * in place when main is called. 316 * This includes 317 * Taking a copy of the boot configuration structure. 318 * Initialising the physical console so characters can be printed. 319 * Setting up page tables for the kernel 320 * Relocating the kernel to the bottom of physical memory 321 */ 322 323 u_int 324 initarm(void *arg) 325 { 326 extern int KERNEL_BASE_phys[]; 327 paddr_t memstart; 328 psize_t memsize; 329 330 /* 331 * Heads up ... Setup the CPU / MMU / TLB functions 332 */ 333 if (set_cpufuncs()) 334 panic("cpu not recognized!"); 335 336 /* map some peripheral registers */ 337 338 pmap_devmap_bootstrap((vaddr_t)armreg_ttbr_read() & -L1_TABLE_SIZE, 339 integrator_devmap); 340 341 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 342 343 consinit(); 344 345 /* Talk to the user */ 346 #define BDSTR(s) _BDSTR(s) 347 #define _BDSTR(s) #s 348 printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n"); 349 350 /* 351 * Fetch the SDRAM start/size from the CM configuration registers. 352 */ 353 integrator_sdram_bounds(&memstart, &memsize); 354 355 #if defined(INTEGRATOR_CP) 356 /* 357 * XXX QEMU reports SDRAM starting at 0x100000, but presents a flat 358 * physical memory model. Set memstart to 0x0, so arm32_bootmem_init 359 * doesn't get fooled later. 360 */ 361 memstart = 0; 362 #endif 363 364 #ifdef VERBOSE_INIT_ARM 365 printf("initarm: Configuring system ...\n"); 366 #endif 367 368 /* Fake bootconfig structure for the benefit of pmap.c */ 369 /* XXX must make the memory description h/w independent */ 370 bootconfig.dramblocks = 1; 371 bootconfig.dram[0].address = memstart; 372 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 373 bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA | BOOT_DRAM_PREFER; 374 375 arm32_bootmem_init(bootconfig.dram[0].address, 376 bootconfig.dram[0].pages * PAGE_SIZE, (unsigned int) KERNEL_BASE_phys); 377 378 arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_LOW, 0, integrator_devmap, 379 false); 380 381 #ifdef VERBOSE_INIT_ARM 382 printf("done.\n"); 383 #endif 384 385 return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0); 386 } 387 388 void 389 consinit(void) 390 { 391 static int consinit_called = 0; 392 #if 0 393 char *console = CONSDEVNAME; 394 #endif 395 396 if (consinit_called != 0) 397 return; 398 399 consinit_called = 1; 400 401 #if NPLCOM > 0 && defined(PLCONSOLE) 402 if (PLCOMCNUNIT == 0) { 403 extern struct bus_space ifpga_common_bs_tag; 404 static struct plcom_instance ifpga_pi1 = { 405 #if defined(INTEGRATOR_CP) 406 .pi_type = PLCOM_TYPE_PL011, 407 #else 408 .pi_type = PLCOM_TYPE_PL010, 409 #endif 410 .pi_iot = &ifpga_common_bs_tag, 411 .pi_size = IFPGA_UART_SIZE, 412 .pi_iobase = IFPGA_UART0 413 }; 414 415 if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, 416 plcomcnmode, PLCOMCNUNIT)) 417 panic("can't init serial console"); 418 return; 419 } else if (PLCOMCNUNIT == 1) { 420 extern struct bus_space ifpga_common_bs_tag; 421 static struct plcom_instance ifpga_pi1 = { 422 #if defined(INTEGRATOR_CP) 423 .pi_type = PLCOM_TYPE_PL011, 424 #else 425 .pi_type = PLCOM_TYPE_PL010, 426 #endif 427 .pi_iot = &ifpga_common_bs_tag, 428 .pi_size = IFPGA_UART_SIZE, 429 .pi_iobase = IFPGA_UART1 430 }; 431 432 if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, 433 plcomcnmode, PLCOMCNUNIT)) 434 panic("can't init serial console"); 435 return; 436 } 437 #endif 438 #if (NCOM > 0) 439 if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed, 440 COM_FREQ, COM_TYPE_NORMAL, comcnmode)) 441 panic("can't init serial console @%x", CONCOMADDR); 442 return; 443 #endif 444 panic("No serial console configured"); 445 } 446 447 static void 448 integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize) 449 { 450 volatile unsigned long *cm_sdram 451 = (volatile unsigned long *)0x10000020; 452 volatile unsigned long *cm_stat 453 = (volatile unsigned long *)0x10000010; 454 455 *memstart = *cm_stat & 0x00ff0000; 456 457 /* 458 * Although the SSRAM overlaps the SDRAM, we can use the wrap-around 459 * to access the entire bank. 460 */ 461 switch ((*cm_sdram >> 2) & 0x7) 462 { 463 case 0: 464 *memsize = 16 * 1024 * 1024; 465 break; 466 case 1: 467 *memsize = 32 * 1024 * 1024; 468 break; 469 case 2: 470 *memsize = 64 * 1024 * 1024; 471 break; 472 case 3: 473 *memsize = 128 * 1024 * 1024; 474 break; 475 case 4: 476 /* With 256M of memory there is no wrap-around. */ 477 *memsize = 256 * 1024 * 1024 - *memstart; 478 break; 479 default: 480 printf("CM_SDRAM retuns unknown value, using 16M\n"); 481 *memsize = 16 * 1024 * 1024; 482 break; 483 } 484 } 485
Indexes created Thu Oct 16 14:10:15 GMT 2025