gumstix_machdep.c revision 1.25
1 /* $NetBSD: gumstix_machdep.c,v 1.25 2010/03/07 09:18:51 kiyohara Exp $ */ 2 /* 3 * Copyright (C) 2005, 2006, 2007 WIDE Project and SOUM Corporation. 4 * All rights reserved. 5 * 6 * Written by Takashi Kiyohara and Susumu Miki for WIDE Project and SOUM 7 * Corporation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the name of SOUM Corporation 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT and SOUM CORPORATION ``AS IS'' 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT AND SOUM CORPORATION 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 /* 34 * Copyright (c) 2002, 2003, 2004, 2005 Genetec Corporation. 35 * All rights reserved. 36 * 37 * Written by Hiroyuki Bessho for Genetec Corporation. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. The name of Genetec Corporation may not be used to endorse or 48 * promote products derived from this software without specific prior 49 * written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 53 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 54 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 55 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 56 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 57 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 58 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 59 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 60 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 61 * POSSIBILITY OF SUCH DAMAGE. 62 * 63 * Machine dependant functions for kernel setup for Genetec G4250EBX 64 * evaluation board. 65 * 66 * Based on iq80310_machhdep.c 67 */ 68 /* 69 * Copyright (c) 2001 Wasabi Systems, Inc. 70 * All rights reserved. 71 * 72 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 73 * 74 * Redistribution and use in source and binary forms, with or without 75 * modification, are permitted provided that the following conditions 76 * are met: 77 * 1. Redistributions of source code must retain the above copyright 78 * notice, this list of conditions and the following disclaimer. 79 * 2. Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in the 81 * documentation and/or other materials provided with the distribution. 82 * 3. All advertising materials mentioning features or use of this software 83 * must display the following acknowledgement: 84 * This product includes software developed for the NetBSD Project by 85 * Wasabi Systems, Inc. 86 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 87 * or promote products derived from this software without specific prior 88 * written permission. 89 * 90 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 91 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 92 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 93 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 94 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 95 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 96 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 97 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 98 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 99 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 100 * POSSIBILITY OF SUCH DAMAGE. 101 */ 102 103 /* 104 * Copyright (c) 1997,1998 Mark Brinicombe. 105 * Copyright (c) 1997,1998 Causality Limited. 106 * All rights reserved. 107 * 108 * Redistribution and use in source and binary forms, with or without 109 * modification, are permitted provided that the following conditions 110 * are met: 111 * 1. Redistributions of source code must retain the above copyright 112 * notice, this list of conditions and the following disclaimer. 113 * 2. Redistributions in binary form must reproduce the above copyright 114 * notice, this list of conditions and the following disclaimer in the 115 * documentation and/or other materials provided with the distribution. 116 * 3. All advertising materials mentioning features or use of this software 117 * must display the following acknowledgement: 118 * This product includes software developed by Mark Brinicombe 119 * for the NetBSD Project. 120 * 4. The name of the company nor the name of the author may be used to 121 * endorse or promote products derived from this software without specific 122 * prior written permission. 123 * 124 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 125 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 126 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 127 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 128 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 129 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 130 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 131 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 132 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 133 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 134 * SUCH DAMAGE. 135 * 136 * Machine dependant functions for kernel setup for Intel IQ80310 evaluation 137 * boards using RedBoot firmware. 138 */ 139 140 #include "opt_gumstix.h" 141 #include "opt_ddb.h" 142 #include "opt_kgdb.h" 143 #include "opt_pmap_debug.h" 144 #include "opt_md.h" 145 #include "opt_modular.h" 146 #include "opt_com.h" 147 #include "md.h" 148 149 #include <sys/param.h> 150 #include <sys/device.h> 151 #include <sys/systm.h> 152 #include <sys/kernel.h> 153 #include <sys/exec.h> 154 #include <sys/proc.h> 155 #include <sys/msgbuf.h> 156 #include <sys/reboot.h> 157 #include <sys/termios.h> 158 #include <sys/ksyms.h> 159 160 #include <uvm/uvm_extern.h> 161 162 #include <sys/conf.h> 163 #include <dev/cons.h> 164 #include <dev/md.h> 165 166 #include <machine/db_machdep.h> 167 #include <ddb/db_sym.h> 168 #include <ddb/db_extern.h> 169 #ifdef KGDB 170 #include <sys/kgdb.h> 171 #endif 172 173 #include <machine/bootconfig.h> 174 #include <machine/bus.h> 175 #include <machine/cpu.h> 176 #include <machine/frame.h> 177 #include <arm/undefined.h> 178 179 #include <arm/arm32/machdep.h> 180 181 #include <arm/xscale/pxa2x0reg.h> 182 #include <arm/xscale/pxa2x0var.h> 183 #include <arm/xscale/pxa2x0_gpio.h> 184 #include <evbarm/gumstix/gumstixreg.h> 185 #include <evbarm/gumstix/gumstixvar.h> 186 187 /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 188 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 189 #ifndef KERNEL_VM_BASE 190 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 191 #endif 192 193 /* 194 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 195 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 196 */ 197 #define KERNEL_VM_SIZE 0x0C000000 198 199 200 /* 201 * Address to call from cpu_reset() to reset the machine. 202 * This is machine architecture dependant as it varies depending 203 * on where the ROM appears when you turn the MMU off. 204 */ 205 206 u_int cpu_reset_address = 0; 207 208 /* Define various stack sizes in pages */ 209 #define IRQ_STACK_SIZE 1 210 #define ABT_STACK_SIZE 1 211 #define UND_STACK_SIZE 1 212 213 BootConfig bootconfig; /* Boot config storage */ 214 static char bootargs[MAX_BOOT_STRING]; 215 char *boot_args = NULL; 216 217 uint32_t system_serial_high; 218 uint32_t system_serial_low; 219 220 vm_offset_t physical_start; 221 vm_offset_t physical_freestart; 222 vm_offset_t physical_freeend; 223 vm_offset_t physical_end; 224 u_int free_pages; 225 226 /*int debug_flags;*/ 227 #ifndef PMAP_STATIC_L1S 228 int max_processes = 64; /* Default number */ 229 #endif /* !PMAP_STATIC_L1S */ 230 231 /* Physical and virtual addresses for some global pages */ 232 pv_addr_t irqstack; 233 pv_addr_t undstack; 234 pv_addr_t abtstack; 235 pv_addr_t kernelstack; 236 pv_addr_t minidataclean; 237 238 vm_offset_t msgbufphys; 239 240 extern u_int data_abort_handler_address; 241 extern u_int prefetch_abort_handler_address; 242 extern u_int undefined_handler_address; 243 244 #ifdef PMAP_DEBUG 245 extern int pmap_debug_level; 246 #endif 247 248 #define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 249 #define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */ 250 #define KERNEL_PT_KERNEL_NUM ((KERNEL_VM_BASE - KERNEL_BASE) >> 22) 251 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM) 252 /* Page tables for mapping kernel VM */ 253 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 254 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 255 256 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 257 258 /* Prototypes */ 259 static void read_system_serial(void); 260 static void process_kernel_args(int, char *[]); 261 static void process_kernel_args_liner(char *); 262 #ifdef KGDB 263 static void kgdb_port_init(void); 264 #endif 265 266 bs_protos(bs_notimpl); 267 268 #include "com.h" 269 #if NCOM > 0 270 #include <dev/ic/comreg.h> 271 #include <dev/ic/comvar.h> 272 #endif 273 274 #include "lcd.h" 275 276 #ifndef CONSPEED 277 #define CONSPEED B115200 /* It's a setting of the default of u-boot */ 278 #endif 279 #ifndef CONMODE 280 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 281 #endif 282 283 int comcnspeed = CONSPEED; 284 int comcnmode = CONMODE; 285 286 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 287 static char console[16]; 288 #endif 289 290 extern void gxio_config_pin(void); 291 extern void gxio_config_expansion(char *); 292 293 /* 294 * void cpu_reboot(int howto, char *bootstr) 295 * 296 * Deal with any syncing, unmounting, dumping and shutdown hooks, 297 * then reset the CPU. 298 */ 299 void 300 cpu_reboot(int howto, char *bootstr) 301 { 302 303 #ifdef DIAGNOSTIC 304 /* info */ 305 printf("boot: howto=%08x curproc=%p\n", howto, curproc); 306 #endif 307 308 /* 309 * If we are still cold then hit the air brakes 310 * and crash to earth fast 311 */ 312 if (cold) { 313 doshutdownhooks(); 314 pmf_system_shutdown(boothowto); 315 printf("The operating system has halted.\n"); 316 printf("Please press any key to reboot.\n\n"); 317 cngetc(); 318 printf("rebooting...\n"); 319 cpu_reset(); 320 /*NOTREACHED*/ 321 } 322 323 /* 324 * If RB_NOSYNC was not specified sync the discs. 325 * Note: Unless cold is set to 1 here, syslogd will die during the 326 * unmount. It looks like syslogd is getting woken up only to find 327 * that it cannot page part of the binary in as the filesystem has 328 * been unmounted. 329 */ 330 if (!(howto & RB_NOSYNC)) 331 bootsync(); 332 333 /* Say NO to interrupts */ 334 splhigh(); 335 336 /* Do a dump if requested. */ 337 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 338 dumpsys(); 339 340 /* Run any shutdown hooks */ 341 doshutdownhooks(); 342 343 pmf_system_shutdown(boothowto); 344 345 /* Make sure IRQ's are disabled */ 346 IRQdisable; 347 348 if (howto & RB_HALT) { 349 printf("The operating system has halted.\n"); 350 printf("Please press any key to reboot.\n\n"); 351 cngetc(); 352 } 353 354 printf("rebooting...\n"); 355 cpu_reset(); 356 /*NOTREACHED*/ 357 } 358 359 static inline pd_entry_t * 360 read_ttb(void) 361 { 362 long ttb; 363 364 __asm volatile("mrc p15, 0, %0, c2, c0, 0" : "=r" (ttb)); 365 366 367 return (pd_entry_t *)(ttb & ~((1<<14)-1)); 368 } 369 370 /* 371 * Static device mappings. These peripheral registers are mapped at 372 * fixed virtual addresses very early in initarm() so that we can use 373 * them while booting the kernel, and stay at the same address 374 * throughout whole kernel's life time. 375 * 376 * We use this table twice; once with bootstrap page table, and once 377 * with kernel's page table which we build up in initarm(). 378 * 379 * Since we map these registers into the bootstrap page table using 380 * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map 381 * registers segment-aligned and segment-rounded in order to avoid 382 * using the 2nd page tables. 383 */ 384 385 #define _A(a) ((a) & ~L1_S_OFFSET) 386 #define _S(s) (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1)) 387 388 static const struct pmap_devmap gumstix_devmap[] = { 389 { 390 GUMSTIX_GPIO_VBASE, 391 _A(PXA2X0_GPIO_BASE), 392 _S(PXA250_GPIO_SIZE), 393 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 394 }, 395 { 396 GUMSTIX_CLKMAN_VBASE, 397 _A(PXA2X0_CLKMAN_BASE), 398 _S(PXA2X0_CLKMAN_SIZE), 399 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 400 }, 401 { 402 GUMSTIX_INTCTL_VBASE, 403 _A(PXA2X0_INTCTL_BASE), 404 _S(PXA2X0_INTCTL_SIZE), 405 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 406 }, 407 { 408 GUMSTIX_FFUART_VBASE, 409 _A(PXA2X0_FFUART_BASE), 410 _S(4 * COM_NPORTS), 411 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 412 }, 413 { 414 GUMSTIX_STUART_VBASE, 415 _A(PXA2X0_STUART_BASE), 416 _S(4 * COM_NPORTS), 417 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 418 }, 419 { 420 GUMSTIX_BTUART_VBASE, 421 _A(PXA2X0_BTUART_BASE), 422 _S(4 * COM_NPORTS), 423 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 424 }, 425 { 426 GUMSTIX_HWUART_VBASE, 427 _A(PXA2X0_HWUART_BASE), 428 _S(4 * COM_NPORTS), 429 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 430 }, 431 { 432 GUMSTIX_LCDC_VBASE, 433 _A(PXA2X0_LCDC_BASE), 434 _S(4 * COM_NPORTS), 435 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 436 }, 437 {0, 0, 0, 0, 0} 438 }; 439 440 #undef _A 441 #undef _S 442 443 444 /* 445 * u_int initarm(...) 446 * 447 * Initial entry point on startup. This gets called before main() is 448 * entered. 449 * It should be responsible for setting up everything that must be 450 * in place when main is called. 451 * This includes 452 * Taking a copy of the boot configuration structure. 453 * Initialising the physical console so characters can be printed. 454 * Setting up page tables for the kernel 455 * Relocating the kernel to the bottom of physical memory 456 */ 457 u_int 458 initarm(void *arg) 459 { 460 extern vaddr_t xscale_cache_clean_addr; 461 extern uint32_t *u_boot_args[]; 462 extern uint32_t ram_size; 463 enum { r0 = 0, r1 = 1, r2 = 2, r3 = 3 }; /* args from u-boot */ 464 int loop; 465 int loop1; 466 u_int l1pagetable; 467 paddr_t memstart; 468 psize_t memsize; 469 #ifdef DIAGNOSTIC 470 extern vsize_t xscale_minidata_clean_size; /* used in KASSERT */ 471 #endif 472 473 /* map some peripheral registers at static I/O area */ 474 pmap_devmap_bootstrap((vaddr_t)read_ttb(), gumstix_devmap); 475 476 /* start 32.768kHz OSC */ 477 ioreg_write(GUMSTIX_CLKMAN_VBASE + CLKMAN_OSCC, OSCC_OON); 478 479 /* Get ready for splfoo() */ 480 pxa2x0_intr_bootstrap(GUMSTIX_INTCTL_VBASE); 481 482 /* 483 * Heads up ... Setup the CPU / MMU / TLB functions 484 */ 485 if (set_cpufuncs()) 486 panic("cpu not recognized!"); 487 488 /* 489 * U-Boot doesn't use the virtual memory. 490 * 491 * Physical Address Range Description 492 * ----------------------- ---------------------------------- 493 * 0x00000000 - 0x00ffffff flash Memory (16MB or 4MB) 494 * 0x40000000 - 0x480fffff Processor Registers 495 * 0xa0000000 - 0xa3ffffff SDRAM Bank 0 (64MB) 496 */ 497 498 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 499 500 /* setup GPIO for {FF,ST,HW}UART. */ 501 pxa2x0_gpio_bootstrap(GUMSTIX_GPIO_VBASE); 502 503 /* configure GPIOs. */ 504 gxio_config_pin(); 505 506 pxa2x0_clkman_bootstrap(GUMSTIX_CLKMAN_VBASE); 507 508 #ifndef GUMSTIX_NETBSD_ARGS_CONSOLE 509 consinit(); 510 #endif 511 #ifdef KGDB 512 kgdb_port_init(); 513 #endif 514 515 /* 516 * Examine the boot args string for options we need to know about 517 * now. 518 */ 519 #define SDRAM_START 0xa0000000UL 520 if (((uint32_t)u_boot_args[r0] & 0xf0000000) != SDRAM_START) 521 /* Maybe r0 is 'argc'. We are booted by command 'go'. */ 522 process_kernel_args((int)u_boot_args[r0], 523 (char **)u_boot_args[r1]); 524 else 525 /* 526 * Maybe r3 is 'boot args string' of 'bootm'. This string is 527 * linely. 528 */ 529 process_kernel_args_liner((char *)u_boot_args[r3]); 530 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 531 consinit(); 532 #endif 533 534 /* Talk to the user */ 535 printf("\nNetBSD/evbarm (gumstix) booting ...\n"); 536 537 /* Read system serial */ 538 read_system_serial(); 539 540 memstart = SDRAM_START; 541 memsize = ram_size; 542 543 #ifdef VERBOSE_INIT_ARM 544 printf("initarm: Configuring system ...\n"); 545 #endif 546 547 /* Fake bootconfig structure for the benefit of pmap.c */ 548 /* XXX must make the memory description h/w independent */ 549 bootconfig.dramblocks = 1; 550 bootconfig.dram[0].address = memstart; 551 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 552 553 /* 554 * Set up the variables that define the availablilty of 555 * physical memory. For now, we're going to set 556 * physical_freestart to 0xa0200000 (where the kernel 557 * was loaded), and allocate the memory we need downwards. 558 * If we get too close to the L1 table that we set up, we 559 * will panic. We will update physical_freestart and 560 * physical_freeend later to reflect what pmap_bootstrap() 561 * wants to see. 562 * 563 * XXX pmap_bootstrap() needs an enema. 564 */ 565 physical_start = bootconfig.dram[0].address; 566 physical_end = physical_start + memsize; 567 568 physical_freestart = 0xa0009000UL; 569 physical_freeend = 0xa0200000UL; 570 571 physmem = (physical_end - physical_start) / PAGE_SIZE; 572 573 #ifdef VERBOSE_INIT_ARM 574 /* Tell the user about the memory */ 575 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 576 physical_start, physical_end - 1); 577 #endif 578 579 /* 580 * Okay, the kernel starts 2MB in from the bottom of physical 581 * memory. We are going to allocate our bootstrap pages downwards 582 * from there. 583 * 584 * We need to allocate some fixed page tables to get the kernel 585 * going. We allocate one page directory and a number of page 586 * tables and store the physical addresses in the kernel_pt_table 587 * array. 588 * 589 * The kernel page directory must be on a 16K boundary. The page 590 * tables must be on 4K bounaries. What we do is allocate the 591 * page directory on the first 16K boundary that we encounter, and 592 * the page tables on 4K boundaries otherwise. Since we allocate 593 * at least 3 L2 page tables, we are guaranteed to encounter at 594 * least one 16K aligned region. 595 */ 596 597 #ifdef VERBOSE_INIT_ARM 598 printf("Allocating page tables\n"); 599 #endif 600 601 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 602 603 #ifdef VERBOSE_INIT_ARM 604 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 605 physical_freestart, free_pages, free_pages); 606 #endif 607 608 /* Define a macro to simplify memory allocation */ 609 #define valloc_pages(var, np) \ 610 alloc_pages((var).pv_pa, (np)); \ 611 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 612 613 #define alloc_pages(var, np) \ 614 physical_freeend -= ((np) * PAGE_SIZE); \ 615 if (physical_freeend < physical_freestart) \ 616 panic("initarm: out of memory"); \ 617 (var) = physical_freeend; \ 618 free_pages -= (np); \ 619 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 620 621 loop1 = 0; 622 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 623 /* Are we 16KB aligned for an L1 ? */ 624 if ((physical_freeend & (L1_TABLE_SIZE - 1)) == 0 && 625 kernel_l1pt.pv_pa == 0) { 626 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 627 } else { 628 valloc_pages(kernel_pt_table[loop1], 629 L2_TABLE_SIZE / PAGE_SIZE); 630 ++loop1; 631 } 632 } 633 634 /* This should never be able to happen but better confirm that. */ 635 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 636 panic("initarm: Failed to align the kernel page directory"); 637 638 /* 639 * Allocate a page for the system page mapped to V0x00000000 640 * This page will just contain the system vectors and can be 641 * shared by all processes. 642 */ 643 alloc_pages(systempage.pv_pa, 1); 644 645 /* Allocate stacks for all modes */ 646 valloc_pages(irqstack, IRQ_STACK_SIZE); 647 valloc_pages(abtstack, ABT_STACK_SIZE); 648 valloc_pages(undstack, UND_STACK_SIZE); 649 valloc_pages(kernelstack, UPAGES); 650 651 /* Allocate enough pages for cleaning the Mini-Data cache. */ 652 KASSERT(xscale_minidata_clean_size <= PAGE_SIZE); 653 valloc_pages(minidataclean, 1); 654 655 #ifdef VERBOSE_INIT_ARM 656 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 657 irqstack.pv_va); 658 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 659 abtstack.pv_va); 660 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 661 undstack.pv_va); 662 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 663 kernelstack.pv_va); 664 #endif 665 666 /* 667 * XXX Defer this to later so that we can reclaim the memory 668 * XXX used by the RedBoot page tables. 669 */ 670 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 671 672 /* 673 * Ok we have allocated physical pages for the primary kernel 674 * page tables 675 */ 676 677 #ifdef VERBOSE_INIT_ARM 678 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 679 #endif 680 681 /* 682 * Now we start construction of the L1 page table 683 * We start by mapping the L2 page tables into the L1. 684 * This means that we can replace L1 mappings later on if necessary 685 */ 686 l1pagetable = kernel_l1pt.pv_va; 687 688 /* Map the L2 pages tables in the L1 page table */ 689 pmap_link_l2pt(l1pagetable, 0x00000000, 690 &kernel_pt_table[KERNEL_PT_SYS]); 691 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 692 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 693 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 694 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 695 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 696 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 697 698 /* update the top of the kernel VM */ 699 pmap_curmaxkvaddr = 700 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 701 702 #ifdef VERBOSE_INIT_ARM 703 printf("Mapping kernel\n"); 704 #endif 705 706 /* Now we fill in the L2 pagetable for the kernel static code/data */ 707 { 708 extern char etext[], _end[]; 709 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 710 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 711 u_int logical; 712 713 textsize = (textsize + PGOFSET) & ~PGOFSET; 714 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 715 716 logical = 0x00200000; /* offset of kernel in RAM */ 717 718 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 719 physical_start + logical, textsize, 720 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 721 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 722 physical_start + logical, totalsize - textsize, 723 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 724 } 725 726 #ifdef VERBOSE_INIT_ARM 727 printf("Constructing L2 page tables\n"); 728 #endif 729 730 /* Map the stack pages */ 731 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 732 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 733 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 734 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 735 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 736 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 737 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 738 UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE); 739 740 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 741 L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE); 742 743 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 744 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 745 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 746 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 747 } 748 749 /* Map the Mini-Data cache clean area. */ 750 xscale_setup_minidata(l1pagetable, minidataclean.pv_va, 751 minidataclean.pv_pa); 752 753 /* Map the vector page. */ 754 #if 1 755 /* MULTI-ICE requires that page 0 is NC/NB so that it can download the 756 * cache-clean code there. */ 757 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 758 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE); 759 #else 760 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 761 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 762 #endif 763 764 /* 765 * map integrated peripherals at same address in l1pagetable 766 * so that we can continue to use console. 767 */ 768 pmap_devmap_bootstrap(l1pagetable, gumstix_devmap); 769 770 /* 771 * Give the XScale global cache clean code an appropriately 772 * sized chunk of unmapped VA space starting at 0xff000000 773 * (our device mappings end before this address). 774 */ 775 xscale_cache_clean_addr = 0xff000000U; 776 777 /* 778 * Now we have the real page tables in place so we can switch to them. 779 * Once this is done we will be running with the REAL kernel page 780 * tables. 781 */ 782 783 /* 784 * Update the physical_freestart/physical_freeend/free_pages 785 * variables. 786 */ 787 { 788 extern char _end[]; 789 790 physical_freestart = physical_start + 791 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 792 KERNEL_BASE); 793 physical_freeend = physical_end; 794 free_pages = 795 (physical_freeend - physical_freestart) / PAGE_SIZE; 796 } 797 798 /* Switch tables */ 799 #ifdef VERBOSE_INIT_ARM 800 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 801 physical_freestart, free_pages, free_pages); 802 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 803 #endif 804 805 cpu_setttb(kernel_l1pt.pv_pa); 806 cpu_tlb_flushID(); 807 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 808 809 /* 810 * Moved from cpu_startup() as data_abort_handler() references 811 * this during uvm init 812 */ 813 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 814 815 #ifdef VERBOSE_INIT_ARM 816 printf("bootstrap done.\n"); 817 #endif 818 819 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 820 821 /* 822 * Pages were allocated during the secondary bootstrap for the 823 * stacks for different CPU modes. 824 * We must now set the r13 registers in the different CPU modes to 825 * point to these stacks. 826 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 827 * of the stack memory. 828 */ 829 #ifdef VERBOSE_INIT_ARM 830 printf("init subsystems: stacks "); 831 #endif 832 833 set_stackptr(PSR_IRQ32_MODE, 834 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 835 set_stackptr(PSR_ABT32_MODE, 836 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 837 set_stackptr(PSR_UND32_MODE, 838 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 839 840 /* 841 * Well we should set a data abort handler. 842 * Once things get going this will change as we will need a proper 843 * handler. 844 * Until then we will use a handler that just panics but tells us 845 * why. 846 * Initialisation of the vectors will just panic on a data abort. 847 * This just fills in a slighly better one. 848 */ 849 #ifdef VERBOSE_INIT_ARM 850 printf("vectors "); 851 #endif 852 data_abort_handler_address = (u_int)data_abort_handler; 853 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 854 undefined_handler_address = (u_int)undefinedinstruction_bounce; 855 856 /* Initialise the undefined instruction handlers */ 857 #ifdef VERBOSE_INIT_ARM 858 printf("undefined "); 859 #endif 860 undefined_init(); 861 862 /* Load memory into UVM. */ 863 #ifdef VERBOSE_INIT_ARM 864 printf("page "); 865 #endif 866 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 867 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 868 atop(physical_freestart), atop(physical_freeend), 869 VM_FREELIST_DEFAULT); 870 871 /* Boot strap pmap telling it where the kernel page table is */ 872 #ifdef VERBOSE_INIT_ARM 873 printf("pmap "); 874 #endif 875 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 876 877 #ifdef __HAVE_MEMORY_DISK__ 878 md_root_setconf(memory_disk, sizeof memory_disk); 879 #endif 880 881 #ifdef BOOTHOWTO 882 boothowto |= BOOTHOWTO; 883 #endif 884 885 #ifdef KGDB 886 if (boothowto & RB_KDB) { 887 kgdb_debug_init = 1; 888 kgdb_connect(1); 889 } 890 #endif 891 892 #if NKSYMS || defined(DDB) || defined(MODULAR) 893 /* Firmware doesn't load symbols. */ 894 ddb_init(0, NULL, NULL); 895 #endif 896 897 #ifdef DDB 898 db_machine_init(); 899 if (boothowto & RB_KDB) 900 Debugger(); 901 #endif 902 903 /* We return the new stack pointer address */ 904 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 905 } 906 907 static void 908 read_system_serial(void) 909 { 910 #define GUMSTIX_SYSTEM_SERIAL_ADDR 0 911 #define GUMSTIX_SYSTEM_SERIAL_SIZE 8 912 #define FLASH_OFFSET_INTEL_PROTECTION 0x81 913 #define FLASH_OFFSET_USER_PROTECTION 0x85 914 #define FLASH_CMD_READ_ID 0x90 915 #define FLASH_CMD_RESET 0xff 916 int i; 917 char system_serial[GUMSTIX_SYSTEM_SERIAL_SIZE], *src; 918 char x; 919 920 src = (char *)(FLASH_OFFSET_USER_PROTECTION * 2 /*word*/); 921 *(volatile uint16_t *)0 = FLASH_CMD_READ_ID; 922 memcpy(system_serial, 923 src + GUMSTIX_SYSTEM_SERIAL_ADDR, sizeof (system_serial)); 924 *(volatile uint16_t *)0 = FLASH_CMD_RESET; 925 926 for (i = 1, x = system_serial[0]; i < sizeof (system_serial); i++) 927 x &= system_serial[i]; 928 if (x == 0xff) { 929 src = (char *)(FLASH_OFFSET_INTEL_PROTECTION * 2 /*word*/); 930 *(volatile uint16_t *)0 = FLASH_CMD_READ_ID; 931 memcpy(system_serial, 932 src + GUMSTIX_SYSTEM_SERIAL_ADDR, sizeof (system_serial)); 933 *(volatile uint16_t *)0 = FLASH_CMD_RESET; 934 935 /* 936 * XXXX: Don't need ??? 937 * gumstix_serial_hash(system_serial); 938 */ 939 } 940 system_serial_high = system_serial[0] << 24 | system_serial[1] << 16 | 941 system_serial[2] << 8 | system_serial[3]; 942 system_serial_low = system_serial[4] << 24 | system_serial[5] << 16 | 943 system_serial[6] << 8 | system_serial[7]; 944 945 printf("system serial: 0x"); 946 for (i = 0; i < sizeof (system_serial); i++) 947 printf("%02x", system_serial[i]); 948 printf("\n"); 949 } 950 951 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 952 static const char busheader_name[] = "busheader="; 953 #endif 954 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 955 static const char console_name[] = "console="; 956 #endif 957 static void 958 process_kernel_args(int argc, char *argv[]) 959 { 960 int gxio_configured = 0, i, j; 961 962 boothowto = 0; 963 964 for (i = 1, j = 0; i < argc; i++) { 965 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 966 if (!strncmp(argv[i], busheader_name, strlen(busheader_name))) { 967 /* configure for GPIOs of busheader side */ 968 gxio_config_expansion(argv[i] + strlen(busheader_name)); 969 gxio_configured = 1; 970 continue; 971 } 972 #endif 973 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 974 if (!strncmp(argv[i], console_name, strlen(console_name))) { 975 strncpy(console, argv[i] + strlen(console_name), 976 sizeof(console)); 977 consinit(); 978 } 979 #endif 980 if (j == MAX_BOOT_STRING) { 981 *(bootargs + j) = '\0'; 982 continue; 983 } 984 if (j != 0) 985 *(bootargs + j++) = ' '; 986 strncpy(bootargs + j, argv[i], MAX_BOOT_STRING - j); 987 j += strlen(argv[i]); 988 } 989 boot_args = bootargs; 990 991 parse_mi_bootargs(boot_args); 992 993 if (!gxio_configured) 994 gxio_config_expansion(NULL); 995 } 996 997 static void 998 process_kernel_args_liner(char *args) 999 { 1000 int i; 1001 char *p = NULL; 1002 1003 boothowto = 0; 1004 1005 strncpy(bootargs, args, sizeof(bootargs)); 1006 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 1007 p = strstr(bootargs, busheader_name); 1008 if (p) { 1009 char expansion[256], c; 1010 1011 i = 0; 1012 do { 1013 c = *(p + strlen(busheader_name) + i); 1014 if (c == ' ') 1015 c = '\0'; 1016 expansion[i++] = c; 1017 } while (c != '\0' && i < sizeof(expansion)); 1018 gxio_config_expansion(expansion); 1019 strcpy(p, p + i); 1020 } 1021 #endif 1022 if (p == NULL) { 1023 gxio_config_expansion(NULL); 1024 } 1025 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 1026 p = strstr(bootargs, console_name); 1027 if (p != NULL) { 1028 char c; 1029 1030 i = 0; 1031 do { 1032 c = *(p + strlen(console_name) + i); 1033 if (c == ' ') 1034 c = '\0'; 1035 console[i++] = c; 1036 } while (c != '\0' && i < sizeof(console)); 1037 consinit(); 1038 strcpy(p, p + i); 1039 } 1040 #endif 1041 boot_args = bootargs; 1042 1043 parse_mi_bootargs(boot_args); 1044 } 1045 1046 #ifdef KGDB 1047 #ifndef KGDB_DEVNAME 1048 #define KGDB_DEVNAME "ffuart" 1049 #endif 1050 const char kgdb_devname[] = KGDB_DEVNAME; 1051 1052 #ifndef KGDB_DEVRATE 1053 #define KGDB_DEVRATE CONSPEED 1054 #endif 1055 int kgdb_devrate = KGDB_DEVRATE; 1056 1057 #if (NCOM > 0) 1058 #ifndef KGDB_DEVMODE 1059 #define KGDB_DEVMODE CONMODE 1060 #endif 1061 int comkgdbmode = KGDB_DEVMODE; 1062 #endif /* NCOM */ 1063 1064 #endif /* KGDB */ 1065 1066 1067 void 1068 consinit(void) 1069 { 1070 static int consinit_called = 0; 1071 int rv; 1072 1073 if (consinit_called != 0) 1074 return; 1075 1076 consinit_called = 1; 1077 1078 #if NCOM > 0 1079 1080 #ifdef FFUARTCONSOLE 1081 #ifdef KGDB 1082 if (strcmp(kgdb_devname, "ffuart") == 0){ 1083 /* port is reserved for kgdb */ 1084 } else 1085 #endif 1086 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1087 if (console[0] == '\0' || strcasecmp(console, "ffuart") == 0) 1088 #endif 1089 { 1090 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_FFUART_BASE, 1091 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1092 if (rv == 0) { 1093 pxa2x0_clkman_config(CKEN_FFUART, 1); 1094 return; 1095 } 1096 } 1097 #endif /* FFUARTCONSOLE */ 1098 1099 #ifdef STUARTCONSOLE 1100 #ifdef KGDB 1101 if (strcmp(kgdb_devname, "stuart") == 0) { 1102 /* port is reserved for kgdb */ 1103 } else 1104 #endif 1105 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1106 if (console[0] == '\0' || strcasecmp(console, "stuart") == 0) 1107 #endif 1108 { 1109 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_STUART_BASE, 1110 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1111 if (rv == 0) { 1112 pxa2x0_clkman_config(CKEN_STUART, 1); 1113 return; 1114 } 1115 } 1116 #endif /* STUARTCONSOLE */ 1117 1118 #ifdef BTUARTCONSOLE 1119 #ifdef KGDB 1120 if (strcmp(kgdb_devname, "btuart") == 0) { 1121 /* port is reserved for kgdb */ 1122 } else 1123 #endif 1124 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1125 if (console[0] == '\0' || strcasecmp(console, "btuart") == 0) 1126 #endif 1127 { 1128 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_BTUART_BASE, 1129 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1130 if (rv == 0) { 1131 pxa2x0_clkman_config(CKEN_BTUART, 1); 1132 return; 1133 } 1134 } 1135 #endif /* BTUARTCONSOLE */ 1136 1137 #ifdef HWUARTCONSOLE 1138 #ifdef KGDB 1139 if (strcmp(kgdb_devname, "hwuart") == 0) { 1140 /* port is reserved for kgdb */ 1141 } else 1142 #endif 1143 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1144 if (console[0] == '\0' || strcasecmp(console, "hwuart") == 0) 1145 #endif 1146 { 1147 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_HWUART_BASE, 1148 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1149 if (rv == 0) { 1150 pxa2x0_clkman_config(CKEN_HWUART, 1); 1151 return; 1152 } 1153 } 1154 #endif /* HWUARTCONSOLE */ 1155 1156 #endif /* NCOM */ 1157 1158 #if NLCD > 0 1159 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1160 if (console[0] == '\0' || strcasecmp(console, "lcd") == 0) 1161 #endif 1162 { 1163 gxlcd_cnattach(); 1164 } 1165 #endif 1166 } 1167 1168 #ifdef KGDB 1169 static void 1170 kgdb_port_init(void) 1171 { 1172 #if (NCOM > 0) && defined(COM_PXA2X0) 1173 paddr_t paddr = 0; 1174 int cken = 0; 1175 1176 if (0 == strcmp(kgdb_devname, "ffuart")) { 1177 paddr = PXA2X0_FFUART_BASE; 1178 cken = CKEN_FFUART; 1179 } else if (0 == strcmp(kgdb_devname, "stuart")) { 1180 paddr = PXA2X0_STUART_BASE; 1181 cken = CKEN_STUART; 1182 } else if (0 == strcmp(kgdb_devname, "btuart")) { 1183 paddr = PXA2X0_BTUART_BASE; 1184 cken = CKEN_BTUART; 1185 } else if (0 == strcmp(kgdb_devname, "hwuart")) { 1186 paddr = PXA2X0_HWUART_BASE; 1187 cken = CKEN_HWUART; 1188 } 1189 1190 if (paddr && 1191 0 == com_kgdb_attach(&pxa2x0_a4x_bs_tag, paddr, 1192 kgdb_devrate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode)) { 1193 1194 pxa2x0_clkman_config(cken, 1); 1195 } 1196 1197 #endif 1198 } 1199 #endif 1200
Indexes created Wed Oct 15 16:09:53 GMT 2025