1 /* $NetBSD: integrator_machdep.c,v 1.82 2023/06/24 05:43:26 msaitoh 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 1.82 2023/06/24 05:43:26 msaitoh Exp $"); 72 73 #include "opt_arm_debug.h" 74 #include "opt_console.h" 75 #include "opt_ddb.h" 76 77 #include <sys/param.h> 78 #include <sys/device.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/exec.h> 82 #include <sys/proc.h> 83 #include <sys/msgbuf.h> 84 #include <sys/reboot.h> 85 #include <sys/termios.h> 86 #include <sys/ksyms.h> 87 #include <sys/bus.h> 88 #include <sys/cpu.h> 89 #include <sys/intr.h> 90 91 #include <uvm/uvm_extern.h> 92 93 #include <dev/cons.h> 94 95 #include <machine/db_machdep.h> 96 #include <ddb/db_sym.h> 97 #include <ddb/db_extern.h> 98 99 #include <machine/bootconfig.h> 100 #include <arm/locore.h> 101 #include <arm/undefined.h> 102 103 #include <arm/arm32/machdep.h> 104 105 #include <evbarm/integrator/integrator_boot.h> 106 107 #include "pci.h" 108 #include "ksyms.h" 109 110 void ifpga_reset(void) __attribute__((noreturn)); 111 112 /* 113 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 114 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 115 */ 116 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 117 #define KERNEL_VM_SIZE 0x0C000000 118 119 BootConfig bootconfig; /* Boot config storage */ 120 char *boot_args = NULL; 121 char *boot_file = NULL; 122 123 /* Prototypes */ 124 125 static void integrator_sdram_bounds (paddr_t *, psize_t *); 126 127 void consinit(void); 128 129 /* A load of console goo. */ 130 #include "vga.h" 131 #if NVGA > 0 132 #include <dev/ic/mc6845reg.h> 133 #include <dev/ic/pcdisplayvar.h> 134 #include <dev/ic/vgareg.h> 135 #include <dev/ic/vgavar.h> 136 #endif 137 138 #include "pckbc.h" 139 #if NPCKBC > 0 140 #include <dev/ic/i8042reg.h> 141 #include <dev/ic/pckbcvar.h> 142 #endif 143 144 #include "com.h" 145 #if NCOM > 0 146 #include <dev/ic/comreg.h> 147 #include <dev/ic/comvar.h> 148 #ifndef CONCOMADDR 149 #define CONCOMADDR 0x3f8 150 #endif 151 #endif 152 153 /* 154 * Define the default console speed for the board. This is generally 155 * what the firmware provided with the board defaults to. 156 */ 157 #ifndef CONSPEED 158 #define CONSPEED B115200 159 #endif 160 #ifndef CONMODE 161 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 162 #endif 163 164 int comcnspeed = CONSPEED; 165 int comcnmode = CONMODE; 166 167 #include "plcom.h" 168 #if (NPLCOM > 0) 169 #include <evbarm/dev/plcomreg.h> 170 #include <evbarm/dev/plcomvar.h> 171 172 #include <evbarm/ifpga/ifpgamem.h> 173 #include <evbarm/ifpga/ifpgareg.h> 174 #include <evbarm/ifpga/ifpgavar.h> 175 #endif 176 177 #ifndef CONSDEVNAME 178 #define CONSDEVNAME "plcom" 179 #endif 180 181 #ifndef PLCONSPEED 182 #define PLCONSPEED B38400 183 #endif 184 #ifndef PLCONMODE 185 #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 186 #endif 187 #ifndef PLCOMCNUNIT 188 #define PLCOMCNUNIT -1 189 #endif 190 191 int plcomcnspeed = PLCONSPEED; 192 int plcomcnmode = PLCONMODE; 193 194 #if 0 195 extern struct consdev kcomcons; 196 static void kcomcnputc(dev_t, int); 197 #endif 198 199 /* 200 * void cpu_reboot(int howto, char *bootstr) 201 * 202 * Reboots the system 203 * 204 * Deal with any syncing, unmounting, dumping and shutdown hooks, 205 * then reset the CPU. 206 */ 207 void 208 cpu_reboot(int howto, char *bootstr) 209 { 210 211 /* 212 * If we are still cold then hit the air brakes 213 * and crash to earth fast 214 */ 215 if (cold) { 216 doshutdownhooks(); 217 pmf_system_shutdown(boothowto); 218 printf("The operating system has halted.\n"); 219 printf("Please press any key to reboot.\n\n"); 220 cngetc(); 221 printf("rebooting...\n"); 222 ifpga_reset(); 223 /*NOTREACHED*/ 224 } 225 226 /* Disable console buffering */ 227 228 /* 229 * If RB_NOSYNC was not specified sync the discs. 230 * Note: Unless cold is set to 1 here, syslogd will die during the 231 * unmount. It looks like syslogd is getting woken up only to find 232 * that it cannot page part of the binary in as the filesystem has 233 * been unmounted. 234 */ 235 if (!(howto & RB_NOSYNC)) 236 bootsync(); 237 238 /* Say NO to interrupts */ 239 splhigh(); 240 241 /* Do a dump if requested. */ 242 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 243 dumpsys(); 244 245 /* Run any shutdown hooks */ 246 doshutdownhooks(); 247 248 pmf_system_shutdown(boothowto); 249 250 /* Make sure IRQ's are disabled */ 251 IRQdisable; 252 253 if (howto & RB_HALT) { 254 printf("The operating system has halted.\n"); 255 printf("Please press any key to reboot.\n\n"); 256 cngetc(); 257 } 258 259 printf("rebooting...\n"); 260 ifpga_reset(); 261 /*NOTREACHED*/ 262 } 263 264 /* Statically mapped devices. */ 265 static const struct pmap_devmap integrator_devmap[] = { 266 #if NPLCOM > 0 && defined(PLCONSOLE) 267 DEVMAP_ENTRY( 268 UART0_BOOT_BASE, 269 IFPGA_IO_BASE + IFPGA_UART0, 270 1024 * 1024 271 ), 272 273 DEVMAP_ENTRY( 274 UART1_BOOT_BASE, 275 IFPGA_IO_BASE + IFPGA_UART1, 276 1024 * 1024 277 ), 278 #endif 279 #if NPCI > 0 280 DEVMAP_ENTRY( 281 IFPGA_PCI_IO_VBASE, 282 IFPGA_PCI_IO_BASE, 283 IFPGA_PCI_IO_VSIZE 284 ), 285 286 DEVMAP_ENTRY( 287 IFPGA_PCI_CONF_VBASE, 288 IFPGA_PCI_CONF_BASE, 289 IFPGA_PCI_CONF_VSIZE 290 ), 291 #endif 292 293 DEVMAP_ENTRY_END 294 }; 295 296 /* 297 * vaddr_t initarm(...) 298 * 299 * Initial entry point on startup. This gets called before main() is 300 * entered. 301 * It should be responsible for setting up everything that must be 302 * in place when main is called. 303 * This includes 304 * Taking a copy of the boot configuration structure. 305 * Initialising the physical console so characters can be printed. 306 * Setting up page tables for the kernel 307 * Relocating the kernel to the bottom of physical memory 308 */ 309 310 vaddr_t 311 initarm(void *arg) 312 { 313 extern int KERNEL_BASE_phys[]; 314 paddr_t memstart; 315 psize_t memsize; 316 317 /* 318 * Heads up ... Setup the CPU / MMU / TLB functions 319 */ 320 if (set_cpufuncs()) 321 panic("cpu not recognized!"); 322 323 /* map some peripheral registers */ 324 325 pmap_devmap_bootstrap((vaddr_t)armreg_ttbr_read() & -L1_TABLE_SIZE, 326 integrator_devmap); 327 328 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 329 330 consinit(); 331 332 /* Talk to the user */ 333 #define BDSTR(s) _BDSTR(s) 334 #define _BDSTR(s) #s 335 printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n"); 336 337 /* 338 * Fetch the SDRAM start/size from the CM configuration registers. 339 */ 340 integrator_sdram_bounds(&memstart, &memsize); 341 342 #if defined(INTEGRATOR_CP) 343 /* 344 * XXX QEMU reports SDRAM starting at 0x100000, but presents a flat 345 * physical memory model. Set memstart to 0x0, so arm32_bootmem_init 346 * doesn't get fooled later. 347 */ 348 memstart = 0; 349 #endif 350 351 #ifdef VERBOSE_INIT_ARM 352 printf("initarm: Configuring system ...\n"); 353 #endif 354 355 /* Fake bootconfig structure for the benefit of pmap.c */ 356 /* XXX must make the memory description h/w independent */ 357 bootconfig.dramblocks = 1; 358 bootconfig.dram[0].address = memstart; 359 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 360 bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA; 361 362 arm32_bootmem_init(bootconfig.dram[0].address, 363 bootconfig.dram[0].pages * PAGE_SIZE, (unsigned int) KERNEL_BASE_phys); 364 365 arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_LOW, 0, integrator_devmap, 366 false); 367 368 #ifdef VERBOSE_INIT_ARM 369 printf("done.\n"); 370 #endif 371 372 return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0); 373 } 374 375 void 376 consinit(void) 377 { 378 static int consinit_called = 0; 379 #if 0 380 char *console = CONSDEVNAME; 381 #endif 382 383 if (consinit_called != 0) 384 return; 385 386 consinit_called = 1; 387 388 #if NPLCOM > 0 && defined(PLCONSOLE) 389 if (PLCOMCNUNIT == 0) { 390 extern struct bus_space ifpga_common_bs_tag; 391 static struct plcom_instance ifpga_pi1 = { 392 #if defined(INTEGRATOR_CP) 393 .pi_type = PLCOM_TYPE_PL011, 394 #else 395 .pi_type = PLCOM_TYPE_PL010, 396 #endif 397 .pi_iot = &ifpga_common_bs_tag, 398 .pi_size = IFPGA_UART_SIZE, 399 .pi_iobase = IFPGA_UART0 400 }; 401 402 if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, 403 plcomcnmode, PLCOMCNUNIT)) 404 panic("can't init serial console"); 405 return; 406 } else if (PLCOMCNUNIT == 1) { 407 extern struct bus_space ifpga_common_bs_tag; 408 static struct plcom_instance ifpga_pi1 = { 409 #if defined(INTEGRATOR_CP) 410 .pi_type = PLCOM_TYPE_PL011, 411 #else 412 .pi_type = PLCOM_TYPE_PL010, 413 #endif 414 .pi_iot = &ifpga_common_bs_tag, 415 .pi_size = IFPGA_UART_SIZE, 416 .pi_iobase = IFPGA_UART1 417 }; 418 419 if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, 420 plcomcnmode, PLCOMCNUNIT)) 421 panic("can't init serial console"); 422 return; 423 } 424 #endif 425 #if (NCOM > 0) 426 if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed, 427 COM_FREQ, COM_TYPE_NORMAL, comcnmode)) 428 panic("can't init serial console @%x", CONCOMADDR); 429 return; 430 #endif 431 panic("No serial console configured"); 432 } 433 434 static void 435 integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize) 436 { 437 volatile unsigned long *cm_sdram 438 = (volatile unsigned long *)0x10000020; 439 volatile unsigned long *cm_stat 440 = (volatile unsigned long *)0x10000010; 441 442 *memstart = *cm_stat & 0x00ff0000; 443 444 /* 445 * Although the SSRAM overlaps the SDRAM, we can use the wrap-around 446 * to access the entire bank. 447 */ 448 switch ((*cm_sdram >> 2) & 0x7) 449 { 450 case 0: 451 *memsize = 16 * 1024 * 1024; 452 break; 453 case 1: 454 *memsize = 32 * 1024 * 1024; 455 break; 456 case 2: 457 *memsize = 64 * 1024 * 1024; 458 break; 459 case 3: 460 *memsize = 128 * 1024 * 1024; 461 break; 462 case 4: 463 /* With 256M of memory there is no wrap-around. */ 464 *memsize = 256 * 1024 * 1024 - *memstart; 465 break; 466 default: 467 printf("CM_SDRAM returns unknown value, using 16M\n"); 468 *memsize = 16 * 1024 * 1024; 469 break; 470 } 471 } 472
Indexes created Sat Sep 20 22:09:52 GMT 2025