gumstix_machdep.c revision 1.24.2.1
1 /* $NetBSD: gumstix_machdep.c,v 1.24.2.1 2010/04/30 14:39:15 uebayasi 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/conf.h> 151 #include <sys/device.h> 152 #include <sys/exec.h> 153 #include <sys/kernel.h> 154 #include <sys/ksyms.h> 155 #include <sys/msgbuf.h> 156 #include <sys/proc.h> 157 #include <sys/reboot.h> 158 #include <sys/systm.h> 159 #include <sys/termios.h> 160 161 #include <machine/bootconfig.h> 162 #include <machine/bus.h> 163 #include <machine/cpu.h> 164 #include <machine/db_machdep.h> 165 #include <machine/frame.h> 166 167 #include <arm/arm32/machdep.h> 168 #include <arm/undefined.h> 169 #include <arm/xscale/pxa2x0reg.h> 170 #include <arm/xscale/pxa2x0var.h> 171 #include <arm/xscale/pxa2x0_gpio.h> 172 #include <evbarm/gumstix/gumstixreg.h> 173 #include <evbarm/gumstix/gumstixvar.h> 174 175 #include <uvm/uvm_extern.h> 176 177 #include <dev/cons.h> 178 #include <dev/md.h> 179 180 #include <ddb/db_sym.h> 181 #include <ddb/db_extern.h> 182 #ifdef KGDB 183 #include <sys/kgdb.h> 184 #endif 185 186 /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 187 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 188 #ifndef KERNEL_VM_BASE 189 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 190 #endif 191 192 /* 193 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 194 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 195 */ 196 #define KERNEL_VM_SIZE 0x0C000000 197 198 199 /* 200 * Address to call from cpu_reset() to reset the machine. 201 * This is machine architecture dependant as it varies depending 202 * on where the ROM appears when you turn the MMU off. 203 */ 204 205 u_int cpu_reset_address = 0; 206 207 /* Define various stack sizes in pages */ 208 #define IRQ_STACK_SIZE 1 209 #define ABT_STACK_SIZE 1 210 #define UND_STACK_SIZE 1 211 212 BootConfig bootconfig; /* Boot config storage */ 213 static char bootargs[MAX_BOOT_STRING]; 214 char *boot_args = NULL; 215 216 uint32_t system_serial_high; 217 uint32_t system_serial_low; 218 219 vm_offset_t physical_start; 220 vm_offset_t physical_freestart; 221 vm_offset_t physical_freeend; 222 vm_offset_t physical_end; 223 u_int free_pages; 224 225 /*int debug_flags;*/ 226 #ifndef PMAP_STATIC_L1S 227 int max_processes = 64; /* Default number */ 228 #endif /* !PMAP_STATIC_L1S */ 229 230 /* Physical and virtual addresses for some global pages */ 231 pv_addr_t irqstack; 232 pv_addr_t undstack; 233 pv_addr_t abtstack; 234 pv_addr_t kernelstack; 235 pv_addr_t minidataclean; 236 237 vm_offset_t msgbufphys; 238 239 extern u_int data_abort_handler_address; 240 extern u_int prefetch_abort_handler_address; 241 extern u_int undefined_handler_address; 242 243 #ifdef PMAP_DEBUG 244 extern int pmap_debug_level; 245 #endif 246 247 #define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 248 #define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */ 249 #define KERNEL_PT_KERNEL_NUM ((KERNEL_VM_BASE - KERNEL_BASE) >> 22) 250 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM) 251 /* Page tables for mapping kernel VM */ 252 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 253 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 254 255 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 256 257 /* Prototypes */ 258 static void read_system_serial(void); 259 static void process_kernel_args(int, char *[]); 260 static void process_kernel_args_liner(char *); 261 #ifdef KGDB 262 static void kgdb_port_init(void); 263 #endif 264 265 bs_protos(bs_notimpl); 266 267 #include "com.h" 268 #if NCOM > 0 269 #include <dev/ic/comreg.h> 270 #include <dev/ic/comvar.h> 271 #endif 272 273 #include "lcd.h" 274 275 #ifndef CONSPEED 276 #define CONSPEED B115200 /* It's a setting of the default of u-boot */ 277 #endif 278 #ifndef CONMODE 279 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 280 #endif 281 282 int comcnspeed = CONSPEED; 283 int comcnmode = CONMODE; 284 285 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 286 static char console[16]; 287 #endif 288 289 extern void gxio_config_pin(void); 290 extern void gxio_config_expansion(char *); 291 292 /* 293 * void cpu_reboot(int howto, char *bootstr) 294 * 295 * Deal with any syncing, unmounting, dumping and shutdown hooks, 296 * then reset the CPU. 297 */ 298 void 299 cpu_reboot(int howto, char *bootstr) 300 { 301 302 #ifdef DIAGNOSTIC 303 /* info */ 304 printf("boot: howto=%08x curproc=%p\n", howto, curproc); 305 #endif 306 307 /* 308 * If we are still cold then hit the air brakes 309 * and crash to earth fast 310 */ 311 if (cold) { 312 doshutdownhooks(); 313 pmf_system_shutdown(boothowto); 314 printf("The operating system has halted.\n"); 315 printf("Please press any key to reboot.\n\n"); 316 cngetc(); 317 printf("rebooting...\n"); 318 cpu_reset(); 319 /*NOTREACHED*/ 320 } 321 322 /* 323 * If RB_NOSYNC was not specified sync the discs. 324 * Note: Unless cold is set to 1 here, syslogd will die during the 325 * unmount. It looks like syslogd is getting woken up only to find 326 * that it cannot page part of the binary in as the filesystem has 327 * been unmounted. 328 */ 329 if (!(howto & RB_NOSYNC)) 330 bootsync(); 331 332 /* Say NO to interrupts */ 333 splhigh(); 334 335 /* Do a dump if requested. */ 336 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 337 dumpsys(); 338 339 /* Run any shutdown hooks */ 340 doshutdownhooks(); 341 342 pmf_system_shutdown(boothowto); 343 344 /* Make sure IRQ's are disabled */ 345 IRQdisable; 346 347 if (howto & RB_HALT) { 348 printf("The operating system has halted.\n"); 349 printf("Please press any key to reboot.\n\n"); 350 cngetc(); 351 } 352 353 printf("rebooting...\n"); 354 cpu_reset(); 355 /*NOTREACHED*/ 356 } 357 358 static inline pd_entry_t * 359 read_ttb(void) 360 { 361 long ttb; 362 363 __asm volatile("mrc p15, 0, %0, c2, c0, 0" : "=r" (ttb)); 364 365 366 return (pd_entry_t *)(ttb & ~((1<<14)-1)); 367 } 368 369 /* 370 * Static device mappings. These peripheral registers are mapped at 371 * fixed virtual addresses very early in initarm() so that we can use 372 * them while booting the kernel, and stay at the same address 373 * throughout whole kernel's life time. 374 * 375 * We use this table twice; once with bootstrap page table, and once 376 * with kernel's page table which we build up in initarm(). 377 * 378 * Since we map these registers into the bootstrap page table using 379 * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map 380 * registers segment-aligned and segment-rounded in order to avoid 381 * using the 2nd page tables. 382 */ 383 384 #define _A(a) ((a) & ~L1_S_OFFSET) 385 #define _S(s) (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1)) 386 387 static const struct pmap_devmap gumstix_devmap[] = { 388 { 389 GUMSTIX_GPIO_VBASE, 390 _A(PXA2X0_GPIO_BASE), 391 _S(PXA250_GPIO_SIZE), 392 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 393 }, 394 { 395 GUMSTIX_CLKMAN_VBASE, 396 _A(PXA2X0_CLKMAN_BASE), 397 _S(PXA2X0_CLKMAN_SIZE), 398 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 399 }, 400 { 401 GUMSTIX_INTCTL_VBASE, 402 _A(PXA2X0_INTCTL_BASE), 403 _S(PXA2X0_INTCTL_SIZE), 404 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 405 }, 406 { 407 GUMSTIX_FFUART_VBASE, 408 _A(PXA2X0_FFUART_BASE), 409 _S(4 * COM_NPORTS), 410 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 411 }, 412 { 413 GUMSTIX_STUART_VBASE, 414 _A(PXA2X0_STUART_BASE), 415 _S(4 * COM_NPORTS), 416 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 417 }, 418 { 419 GUMSTIX_BTUART_VBASE, 420 _A(PXA2X0_BTUART_BASE), 421 _S(4 * COM_NPORTS), 422 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 423 }, 424 { 425 GUMSTIX_HWUART_VBASE, 426 _A(PXA2X0_HWUART_BASE), 427 _S(4 * COM_NPORTS), 428 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 429 }, 430 { 431 GUMSTIX_LCDC_VBASE, 432 _A(PXA2X0_LCDC_BASE), 433 _S(4 * COM_NPORTS), 434 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 435 }, 436 {0, 0, 0, 0, 0} 437 }; 438 439 #undef _A 440 #undef _S 441 442 443 /* 444 * u_int initarm(...) 445 * 446 * Initial entry point on startup. This gets called before main() is 447 * entered. 448 * It should be responsible for setting up everything that must be 449 * in place when main is called. 450 * This includes 451 * Taking a copy of the boot configuration structure. 452 * Initialising the physical console so characters can be printed. 453 * Setting up page tables for the kernel 454 * Relocating the kernel to the bottom of physical memory 455 */ 456 u_int 457 initarm(void *arg) 458 { 459 extern vaddr_t xscale_cache_clean_addr; 460 extern uint32_t *u_boot_args[]; 461 extern uint32_t ram_size; 462 enum { r0 = 0, r1 = 1, r2 = 2, r3 = 3 }; /* args from u-boot */ 463 int loop; 464 int loop1; 465 u_int l1pagetable; 466 paddr_t memstart; 467 psize_t memsize; 468 #ifdef DIAGNOSTIC 469 extern vsize_t xscale_minidata_clean_size; /* used in KASSERT */ 470 #endif 471 472 /* map some peripheral registers at static I/O area */ 473 pmap_devmap_bootstrap((vaddr_t)read_ttb(), gumstix_devmap); 474 475 /* start 32.768kHz OSC */ 476 ioreg_write(GUMSTIX_CLKMAN_VBASE + CLKMAN_OSCC, OSCC_OON); 477 478 /* Get ready for splfoo() */ 479 pxa2x0_intr_bootstrap(GUMSTIX_INTCTL_VBASE); 480 481 /* 482 * Heads up ... Setup the CPU / MMU / TLB functions 483 */ 484 if (set_cpufuncs()) 485 panic("cpu not recognized!"); 486 487 /* 488 * U-Boot doesn't use the virtual memory. 489 * 490 * Physical Address Range Description 491 * ----------------------- ---------------------------------- 492 * 0x00000000 - 0x00ffffff flash Memory (16MB or 4MB) 493 * 0x40000000 - 0x480fffff Processor Registers 494 * 0xa0000000 - 0xa3ffffff SDRAM Bank 0 (64MB) 495 */ 496 497 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 498 499 /* setup GPIO for {FF,ST,HW}UART. */ 500 pxa2x0_gpio_bootstrap(GUMSTIX_GPIO_VBASE); 501 502 /* configure GPIOs. */ 503 gxio_config_pin(); 504 505 pxa2x0_clkman_bootstrap(GUMSTIX_CLKMAN_VBASE); 506 507 #ifndef GUMSTIX_NETBSD_ARGS_CONSOLE 508 consinit(); 509 #endif 510 #ifdef KGDB 511 kgdb_port_init(); 512 #endif 513 514 /* 515 * Examine the boot args string for options we need to know about 516 * now. 517 */ 518 #define SDRAM_START 0xa0000000UL 519 if (((uint32_t)u_boot_args[r0] & 0xf0000000) != SDRAM_START) 520 /* Maybe r0 is 'argc'. We are booted by command 'go'. */ 521 process_kernel_args((int)u_boot_args[r0], 522 (char **)u_boot_args[r1]); 523 else 524 /* 525 * Maybe r3 is 'boot args string' of 'bootm'. This string is 526 * linely. 527 */ 528 process_kernel_args_liner((char *)u_boot_args[r3]); 529 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 530 consinit(); 531 #endif 532 533 /* Talk to the user */ 534 printf("\nNetBSD/evbarm (gumstix) booting ...\n"); 535 536 /* Read system serial */ 537 read_system_serial(); 538 539 memstart = SDRAM_START; 540 memsize = ram_size; 541 542 #ifdef VERBOSE_INIT_ARM 543 printf("initarm: Configuring system ...\n"); 544 #endif 545 546 /* Fake bootconfig structure for the benefit of pmap.c */ 547 /* XXX must make the memory description h/w independent */ 548 bootconfig.dramblocks = 1; 549 bootconfig.dram[0].address = memstart; 550 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 551 552 /* 553 * Set up the variables that define the availablilty of 554 * physical memory. For now, we're going to set 555 * physical_freestart to 0xa0200000 (where the kernel 556 * was loaded), and allocate the memory we need downwards. 557 * If we get too close to the L1 table that we set up, we 558 * will panic. We will update physical_freestart and 559 * physical_freeend later to reflect what pmap_bootstrap() 560 * wants to see. 561 * 562 * XXX pmap_bootstrap() needs an enema. 563 */ 564 physical_start = bootconfig.dram[0].address; 565 physical_end = physical_start + memsize; 566 567 physical_freestart = 0xa0009000UL; 568 physical_freeend = 0xa0200000UL; 569 570 physmem = (physical_end - physical_start) / PAGE_SIZE; 571 572 #ifdef VERBOSE_INIT_ARM 573 /* Tell the user about the memory */ 574 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 575 physical_start, physical_end - 1); 576 #endif 577 578 /* 579 * Okay, the kernel starts 2MB in from the bottom of physical 580 * memory. We are going to allocate our bootstrap pages downwards 581 * from there. 582 * 583 * We need to allocate some fixed page tables to get the kernel 584 * going. We allocate one page directory and a number of page 585 * tables and store the physical addresses in the kernel_pt_table 586 * array. 587 * 588 * The kernel page directory must be on a 16K boundary. The page 589 * tables must be on 4K bounaries. What we do is allocate the 590 * page directory on the first 16K boundary that we encounter, and 591 * the page tables on 4K boundaries otherwise. Since we allocate 592 * at least 3 L2 page tables, we are guaranteed to encounter at 593 * least one 16K aligned region. 594 */ 595 596 #ifdef VERBOSE_INIT_ARM 597 printf("Allocating page tables\n"); 598 #endif 599 600 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 601 602 #ifdef VERBOSE_INIT_ARM 603 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 604 physical_freestart, free_pages, free_pages); 605 #endif 606 607 /* Define a macro to simplify memory allocation */ 608 #define valloc_pages(var, np) \ 609 alloc_pages((var).pv_pa, (np)); \ 610 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 611 612 #define alloc_pages(var, np) \ 613 physical_freeend -= ((np) * PAGE_SIZE); \ 614 if (physical_freeend < physical_freestart) \ 615 panic("initarm: out of memory"); \ 616 (var) = physical_freeend; \ 617 free_pages -= (np); \ 618 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 619 620 loop1 = 0; 621 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 622 /* Are we 16KB aligned for an L1 ? */ 623 if ((physical_freeend & (L1_TABLE_SIZE - 1)) == 0 && 624 kernel_l1pt.pv_pa == 0) { 625 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 626 } else { 627 valloc_pages(kernel_pt_table[loop1], 628 L2_TABLE_SIZE / PAGE_SIZE); 629 ++loop1; 630 } 631 } 632 633 /* This should never be able to happen but better confirm that. */ 634 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 635 panic("initarm: Failed to align the kernel page directory"); 636 637 /* 638 * Allocate a page for the system page mapped to V0x00000000 639 * This page will just contain the system vectors and can be 640 * shared by all processes. 641 */ 642 alloc_pages(systempage.pv_pa, 1); 643 644 /* Allocate stacks for all modes */ 645 valloc_pages(irqstack, IRQ_STACK_SIZE); 646 valloc_pages(abtstack, ABT_STACK_SIZE); 647 valloc_pages(undstack, UND_STACK_SIZE); 648 valloc_pages(kernelstack, UPAGES); 649 650 /* Allocate enough pages for cleaning the Mini-Data cache. */ 651 KASSERT(xscale_minidata_clean_size <= PAGE_SIZE); 652 valloc_pages(minidataclean, 1); 653 654 #ifdef VERBOSE_INIT_ARM 655 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 656 irqstack.pv_va); 657 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 658 abtstack.pv_va); 659 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 660 undstack.pv_va); 661 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 662 kernelstack.pv_va); 663 #endif 664 665 /* 666 * XXX Defer this to later so that we can reclaim the memory 667 * XXX used by the RedBoot page tables. 668 */ 669 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 670 671 /* 672 * Ok we have allocated physical pages for the primary kernel 673 * page tables 674 */ 675 676 #ifdef VERBOSE_INIT_ARM 677 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 678 #endif 679 680 /* 681 * Now we start construction of the L1 page table 682 * We start by mapping the L2 page tables into the L1. 683 * This means that we can replace L1 mappings later on if necessary 684 */ 685 l1pagetable = kernel_l1pt.pv_va; 686 687 /* Map the L2 pages tables in the L1 page table */ 688 pmap_link_l2pt(l1pagetable, 0x00000000, 689 &kernel_pt_table[KERNEL_PT_SYS]); 690 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 691 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 692 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 693 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 694 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 695 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 696 697 /* update the top of the kernel VM */ 698 pmap_curmaxkvaddr = 699 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 700 701 #ifdef VERBOSE_INIT_ARM 702 printf("Mapping kernel\n"); 703 #endif 704 705 /* Now we fill in the L2 pagetable for the kernel static code/data */ 706 { 707 extern char etext[], _end[]; 708 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 709 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 710 u_int logical; 711 712 textsize = (textsize + PGOFSET) & ~PGOFSET; 713 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 714 715 logical = 0x00200000; /* offset of kernel in RAM */ 716 717 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 718 physical_start + logical, textsize, 719 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 720 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 721 physical_start + logical, totalsize - textsize, 722 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 723 } 724 725 #ifdef VERBOSE_INIT_ARM 726 printf("Constructing L2 page tables\n"); 727 #endif 728 729 /* Map the stack pages */ 730 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 731 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 732 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 733 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 734 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 735 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 736 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 737 UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE); 738 739 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 740 L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE); 741 742 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 743 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 744 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 745 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 746 } 747 748 /* Map the Mini-Data cache clean area. */ 749 xscale_setup_minidata(l1pagetable, minidataclean.pv_va, 750 minidataclean.pv_pa); 751 752 /* Map the vector page. */ 753 #if 1 754 /* MULTI-ICE requires that page 0 is NC/NB so that it can download the 755 * cache-clean code there. */ 756 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 757 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE); 758 #else 759 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 760 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 761 #endif 762 763 /* 764 * map integrated peripherals at same address in l1pagetable 765 * so that we can continue to use console. 766 */ 767 pmap_devmap_bootstrap(l1pagetable, gumstix_devmap); 768 769 /* 770 * Give the XScale global cache clean code an appropriately 771 * sized chunk of unmapped VA space starting at 0xff000000 772 * (our device mappings end before this address). 773 */ 774 xscale_cache_clean_addr = 0xff000000U; 775 776 /* 777 * Now we have the real page tables in place so we can switch to them. 778 * Once this is done we will be running with the REAL kernel page 779 * tables. 780 */ 781 782 /* 783 * Update the physical_freestart/physical_freeend/free_pages 784 * variables. 785 */ 786 { 787 extern char _end[]; 788 789 physical_freestart = physical_start + 790 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 791 KERNEL_BASE); 792 physical_freeend = physical_end; 793 free_pages = 794 (physical_freeend - physical_freestart) / PAGE_SIZE; 795 } 796 797 /* Switch tables */ 798 #ifdef VERBOSE_INIT_ARM 799 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 800 physical_freestart, free_pages, free_pages); 801 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 802 #endif 803 804 cpu_setttb(kernel_l1pt.pv_pa); 805 cpu_tlb_flushID(); 806 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 807 808 /* 809 * Moved from cpu_startup() as data_abort_handler() references 810 * this during uvm init 811 */ 812 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 813 814 #ifdef VERBOSE_INIT_ARM 815 printf("bootstrap done.\n"); 816 #endif 817 818 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 819 820 /* 821 * Pages were allocated during the secondary bootstrap for the 822 * stacks for different CPU modes. 823 * We must now set the r13 registers in the different CPU modes to 824 * point to these stacks. 825 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 826 * of the stack memory. 827 */ 828 #ifdef VERBOSE_INIT_ARM 829 printf("init subsystems: stacks "); 830 #endif 831 832 set_stackptr(PSR_IRQ32_MODE, 833 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 834 set_stackptr(PSR_ABT32_MODE, 835 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 836 set_stackptr(PSR_UND32_MODE, 837 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 838 839 /* 840 * Well we should set a data abort handler. 841 * Once things get going this will change as we will need a proper 842 * handler. 843 * Until then we will use a handler that just panics but tells us 844 * why. 845 * Initialisation of the vectors will just panic on a data abort. 846 * This just fills in a slighly better one. 847 */ 848 #ifdef VERBOSE_INIT_ARM 849 printf("vectors "); 850 #endif 851 data_abort_handler_address = (u_int)data_abort_handler; 852 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 853 undefined_handler_address = (u_int)undefinedinstruction_bounce; 854 855 /* Initialise the undefined instruction handlers */ 856 #ifdef VERBOSE_INIT_ARM 857 printf("undefined "); 858 #endif 859 undefined_init(); 860 861 /* Load memory into UVM. */ 862 #ifdef VERBOSE_INIT_ARM 863 printf("page "); 864 #endif 865 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 866 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 867 atop(physical_freestart), atop(physical_freeend), 868 VM_FREELIST_DEFAULT); 869 870 /* Boot strap pmap telling it where the kernel page table is */ 871 #ifdef VERBOSE_INIT_ARM 872 printf("pmap "); 873 #endif 874 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 875 876 #ifdef __HAVE_MEMORY_DISK__ 877 md_root_setconf(memory_disk, sizeof memory_disk); 878 #endif 879 880 #ifdef BOOTHOWTO 881 boothowto |= BOOTHOWTO; 882 #endif 883 884 #ifdef KGDB 885 if (boothowto & RB_KDB) { 886 kgdb_debug_init = 1; 887 kgdb_connect(1); 888 } 889 #endif 890 891 #if NKSYMS || defined(DDB) || defined(MODULAR) 892 /* Firmware doesn't load symbols. */ 893 ddb_init(0, NULL, NULL); 894 #endif 895 896 #ifdef DDB 897 db_machine_init(); 898 if (boothowto & RB_KDB) 899 Debugger(); 900 #endif 901 902 /* We return the new stack pointer address */ 903 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 904 } 905 906 static void 907 read_system_serial(void) 908 { 909 #define GUMSTIX_SYSTEM_SERIAL_ADDR 0 910 #define GUMSTIX_SYSTEM_SERIAL_SIZE 8 911 #define FLASH_OFFSET_INTEL_PROTECTION 0x81 912 #define FLASH_OFFSET_USER_PROTECTION 0x85 913 #define FLASH_CMD_READ_ID 0x90 914 #define FLASH_CMD_RESET 0xff 915 int i; 916 char system_serial[GUMSTIX_SYSTEM_SERIAL_SIZE], *src; 917 char x; 918 919 src = (char *)(FLASH_OFFSET_USER_PROTECTION * 2 /*word*/); 920 *(volatile uint16_t *)0 = FLASH_CMD_READ_ID; 921 memcpy(system_serial, 922 src + GUMSTIX_SYSTEM_SERIAL_ADDR, sizeof (system_serial)); 923 *(volatile uint16_t *)0 = FLASH_CMD_RESET; 924 925 for (i = 1, x = system_serial[0]; i < sizeof (system_serial); i++) 926 x &= system_serial[i]; 927 if (x == 0xff) { 928 src = (char *)(FLASH_OFFSET_INTEL_PROTECTION * 2 /*word*/); 929 *(volatile uint16_t *)0 = FLASH_CMD_READ_ID; 930 memcpy(system_serial, 931 src + GUMSTIX_SYSTEM_SERIAL_ADDR, sizeof (system_serial)); 932 *(volatile uint16_t *)0 = FLASH_CMD_RESET; 933 934 /* 935 * XXXX: Don't need ??? 936 * gumstix_serial_hash(system_serial); 937 */ 938 } 939 system_serial_high = system_serial[0] << 24 | system_serial[1] << 16 | 940 system_serial[2] << 8 | system_serial[3]; 941 system_serial_low = system_serial[4] << 24 | system_serial[5] << 16 | 942 system_serial[6] << 8 | system_serial[7]; 943 944 printf("system serial: 0x"); 945 for (i = 0; i < sizeof (system_serial); i++) 946 printf("%02x", system_serial[i]); 947 printf("\n"); 948 } 949 950 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 951 static const char busheader_name[] = "busheader="; 952 #endif 953 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 954 static const char console_name[] = "console="; 955 #endif 956 static void 957 process_kernel_args(int argc, char *argv[]) 958 { 959 int gxio_configured = 0, i, j; 960 961 boothowto = 0; 962 963 for (i = 1, j = 0; i < argc; i++) { 964 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 965 if (!strncmp(argv[i], busheader_name, strlen(busheader_name))) { 966 /* configure for GPIOs of busheader side */ 967 gxio_config_expansion(argv[i] + strlen(busheader_name)); 968 gxio_configured = 1; 969 continue; 970 } 971 #endif 972 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 973 if (!strncmp(argv[i], console_name, strlen(console_name))) { 974 strncpy(console, argv[i] + strlen(console_name), 975 sizeof(console)); 976 consinit(); 977 } 978 #endif 979 if (j == MAX_BOOT_STRING) { 980 *(bootargs + j) = '\0'; 981 continue; 982 } 983 if (j != 0) 984 *(bootargs + j++) = ' '; 985 strncpy(bootargs + j, argv[i], MAX_BOOT_STRING - j); 986 j += strlen(argv[i]); 987 } 988 boot_args = bootargs; 989 990 parse_mi_bootargs(boot_args); 991 992 if (!gxio_configured) 993 gxio_config_expansion(NULL); 994 } 995 996 static void 997 process_kernel_args_liner(char *args) 998 { 999 int i; 1000 char *p = NULL; 1001 1002 boothowto = 0; 1003 1004 strncpy(bootargs, args, sizeof(bootargs)); 1005 #ifdef GUMSTIX_NETBSD_ARGS_BUSHEADER 1006 p = strstr(bootargs, busheader_name); 1007 if (p) { 1008 char expansion[256], c; 1009 1010 i = 0; 1011 do { 1012 c = *(p + strlen(busheader_name) + i); 1013 if (c == ' ') 1014 c = '\0'; 1015 expansion[i++] = c; 1016 } while (c != '\0' && i < sizeof(expansion)); 1017 gxio_config_expansion(expansion); 1018 strcpy(p, p + i); 1019 } 1020 #endif 1021 if (p == NULL) { 1022 gxio_config_expansion(NULL); 1023 } 1024 #ifdef GUMSTIX_NETBSD_ARGS_CONSOLE 1025 p = strstr(bootargs, console_name); 1026 if (p != NULL) { 1027 char c; 1028 1029 i = 0; 1030 do { 1031 c = *(p + strlen(console_name) + i); 1032 if (c == ' ') 1033 c = '\0'; 1034 console[i++] = c; 1035 } while (c != '\0' && i < sizeof(console)); 1036 consinit(); 1037 strcpy(p, p + i); 1038 } 1039 #endif 1040 boot_args = bootargs; 1041 1042 parse_mi_bootargs(boot_args); 1043 } 1044 1045 #ifdef KGDB 1046 #ifndef KGDB_DEVNAME 1047 #define KGDB_DEVNAME "ffuart" 1048 #endif 1049 const char kgdb_devname[] = KGDB_DEVNAME; 1050 1051 #ifndef KGDB_DEVRATE 1052 #define KGDB_DEVRATE CONSPEED 1053 #endif 1054 int kgdb_devrate = KGDB_DEVRATE; 1055 1056 #if (NCOM > 0) 1057 #ifndef KGDB_DEVMODE 1058 #define KGDB_DEVMODE CONMODE 1059 #endif 1060 int comkgdbmode = KGDB_DEVMODE; 1061 #endif /* NCOM */ 1062 1063 #endif /* KGDB */ 1064 1065 1066 void 1067 consinit(void) 1068 { 1069 static int consinit_called = 0; 1070 int rv; 1071 1072 if (consinit_called != 0) 1073 return; 1074 1075 consinit_called = 1; 1076 1077 #if NCOM > 0 1078 1079 #ifdef FFUARTCONSOLE 1080 #ifdef KGDB 1081 if (strcmp(kgdb_devname, "ffuart") == 0){ 1082 /* port is reserved for kgdb */ 1083 } else 1084 #endif 1085 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1086 if (console[0] == '\0' || strcasecmp(console, "ffuart") == 0) 1087 #endif 1088 { 1089 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_FFUART_BASE, 1090 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1091 if (rv == 0) { 1092 pxa2x0_clkman_config(CKEN_FFUART, 1); 1093 return; 1094 } 1095 } 1096 #endif /* FFUARTCONSOLE */ 1097 1098 #ifdef STUARTCONSOLE 1099 #ifdef KGDB 1100 if (strcmp(kgdb_devname, "stuart") == 0) { 1101 /* port is reserved for kgdb */ 1102 } else 1103 #endif 1104 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1105 if (console[0] == '\0' || strcasecmp(console, "stuart") == 0) 1106 #endif 1107 { 1108 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_STUART_BASE, 1109 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1110 if (rv == 0) { 1111 pxa2x0_clkman_config(CKEN_STUART, 1); 1112 return; 1113 } 1114 } 1115 #endif /* STUARTCONSOLE */ 1116 1117 #ifdef BTUARTCONSOLE 1118 #ifdef KGDB 1119 if (strcmp(kgdb_devname, "btuart") == 0) { 1120 /* port is reserved for kgdb */ 1121 } else 1122 #endif 1123 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1124 if (console[0] == '\0' || strcasecmp(console, "btuart") == 0) 1125 #endif 1126 { 1127 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_BTUART_BASE, 1128 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1129 if (rv == 0) { 1130 pxa2x0_clkman_config(CKEN_BTUART, 1); 1131 return; 1132 } 1133 } 1134 #endif /* BTUARTCONSOLE */ 1135 1136 #ifdef HWUARTCONSOLE 1137 #ifdef KGDB 1138 if (strcmp(kgdb_devname, "hwuart") == 0) { 1139 /* port is reserved for kgdb */ 1140 } else 1141 #endif 1142 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1143 if (console[0] == '\0' || strcasecmp(console, "hwuart") == 0) 1144 #endif 1145 { 1146 rv = comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_HWUART_BASE, 1147 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode); 1148 if (rv == 0) { 1149 pxa2x0_clkman_config(CKEN_HWUART, 1); 1150 return; 1151 } 1152 } 1153 #endif /* HWUARTCONSOLE */ 1154 1155 #endif /* NCOM */ 1156 1157 #if NLCD > 0 1158 #if defined(GUMSTIX_NETBSD_ARGS_CONSOLE) 1159 if (console[0] == '\0' || strcasecmp(console, "lcd") == 0) 1160 #endif 1161 { 1162 gxlcd_cnattach(); 1163 } 1164 #endif 1165 } 1166 1167 #ifdef KGDB 1168 static void 1169 kgdb_port_init(void) 1170 { 1171 #if (NCOM > 0) && defined(COM_PXA2X0) 1172 paddr_t paddr = 0; 1173 int cken = 0; 1174 1175 if (0 == strcmp(kgdb_devname, "ffuart")) { 1176 paddr = PXA2X0_FFUART_BASE; 1177 cken = CKEN_FFUART; 1178 } else if (0 == strcmp(kgdb_devname, "stuart")) { 1179 paddr = PXA2X0_STUART_BASE; 1180 cken = CKEN_STUART; 1181 } else if (0 == strcmp(kgdb_devname, "btuart")) { 1182 paddr = PXA2X0_BTUART_BASE; 1183 cken = CKEN_BTUART; 1184 } else if (0 == strcmp(kgdb_devname, "hwuart")) { 1185 paddr = PXA2X0_HWUART_BASE; 1186 cken = CKEN_HWUART; 1187 } 1188 1189 if (paddr && 1190 0 == com_kgdb_attach(&pxa2x0_a4x_bs_tag, paddr, 1191 kgdb_devrate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode)) { 1192 1193 pxa2x0_clkman_config(cken, 1); 1194 } 1195 1196 #endif 1197 } 1198 #endif 1199
Indexes created Tue Oct 28 12:10:06 GMT 2025