netwalker_machdep.c revision 1.10
1 /* $NetBSD: netwalker_machdep.c,v 1.10 2012/09/22 00:33:40 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003, 2005, 2010 Genetec Corporation. 5 * All rights reserved. 6 * Written by Hiroyuki Bessho for Genetec Corporation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * Machine dependent functions for kernel setup for Sharp Netwalker. 30 * Based on iq80310_machhdep.c 31 */ 32 /* 33 * Copyright (c) 2001 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 /* 68 * Copyright (c) 1997,1998 Mark Brinicombe. 69 * Copyright (c) 1997,1998 Causality Limited. 70 * All rights reserved. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. All advertising materials mentioning features or use of this software 81 * must display the following acknowledgement: 82 * This product includes software developed by Mark Brinicombe 83 * for the NetBSD Project. 84 * 4. The name of the company nor the name of the author may be used to 85 * endorse or promote products derived from this software without specific 86 * prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 89 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 90 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 91 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 92 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 93 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 94 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * Machine dependent functions for kernel setup for Intel IQ80310 evaluation 101 * boards using RedBoot firmware. 102 */ 103 104 #include <sys/cdefs.h> 105 __KERNEL_RCSID(0, "$NetBSD: netwalker_machdep.c,v 1.10 2012/09/22 00:33:40 matt Exp $"); 106 107 #include "opt_ddb.h" 108 #include "opt_kgdb.h" 109 #include "opt_ipkdb.h" 110 #include "opt_pmap_debug.h" 111 #include "opt_md.h" 112 #include "opt_com.h" 113 #include "imxuart.h" 114 #include "opt_imxuart.h" 115 #include "opt_imx.h" 116 117 #include <sys/param.h> 118 #include <sys/device.h> 119 #include <sys/systm.h> 120 #include <sys/kernel.h> 121 #include <sys/exec.h> 122 #include <sys/proc.h> 123 #include <sys/msgbuf.h> 124 #include <sys/reboot.h> 125 #include <sys/termios.h> 126 #include <sys/ksyms.h> 127 128 #include <uvm/uvm_extern.h> 129 130 #include <sys/conf.h> 131 #include <dev/cons.h> 132 #include <dev/md.h> 133 134 #include <machine/db_machdep.h> 135 #include <ddb/db_sym.h> 136 #include <ddb/db_extern.h> 137 #ifdef KGDB 138 #include <sys/kgdb.h> 139 #endif 140 141 #include <machine/bootconfig.h> 142 #include <sys/bus.h> 143 #include <machine/cpu.h> 144 #include <machine/frame.h> 145 #include <arm/undefined.h> 146 147 #include <arm/arm32/pte.h> 148 #include <arm/arm32/machdep.h> 149 150 #include <arm/imx/imx51reg.h> 151 #include <arm/imx/imx51var.h> 152 #include <arm/imx/imxgpioreg.h> 153 #include <arm/imx/imxwdogreg.h> 154 #include <arm/imx/imxuartreg.h> 155 #include <arm/imx/imxuartvar.h> 156 #include <arm/imx/imx51_iomuxreg.h> 157 #include <evbarm/netwalker/netwalker_reg.h> 158 159 /* Kernel text starts 1MB in from the bottom of the kernel address space. */ 160 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00100000) 161 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 162 163 /* 164 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 165 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 166 */ 167 #define KERNEL_VM_SIZE 0x0C000000 168 169 BootConfig bootconfig; /* Boot config storage */ 170 char *boot_args = NULL; 171 char *boot_file = NULL; 172 173 vm_offset_t physical_start; 174 vm_offset_t physical_freestart; 175 vm_offset_t physical_freeend; 176 vm_offset_t physical_end; 177 u_int free_pages; 178 vm_offset_t pagetables_start; 179 180 /*int debug_flags;*/ 181 #ifndef PMAP_STATIC_L1S 182 int max_processes = 64; /* Default number */ 183 #endif /* !PMAP_STATIC_L1S */ 184 185 vm_offset_t msgbufphys; 186 187 extern char KERNEL_BASE_phys[]; 188 extern char KERNEL_BASE_virt[]; 189 extern char etext[], __data_start[], _edata[], __bss_start[], __bss_end__[]; 190 extern char _end[]; 191 extern int cpu_do_powersave; 192 193 #define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 194 #define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */ 195 #define KERNEL_PT_KERNEL_NUM 4 196 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM) 197 /* Page tables for mapping kernel VM */ 198 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 199 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 200 201 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 202 203 /* 204 * Macros to translate between physical and virtual for a subset of the 205 * kernel address space. *Not* for general use. 206 */ 207 #define KERNEL_BASE_PHYS ((paddr_t)&KERNEL_BASE_phys) 208 #define KERNEL_BASE_VIRT ((vaddr_t)&KERNEL_BASE_virt) 209 #define KERN_VTOPHYS(va) \ 210 ((paddr_t)((vaddr_t)va - KERNEL_BASE_VIRT + KERNEL_BASE_PHYS)) 211 #define KERN_PHYSTOV(pa) \ 212 ((vaddr_t)((paddr_t)pa - KERNEL_BASE_PHYS + KERNEL_BASE_VIRT)) 213 214 215 /* Prototypes */ 216 217 void consinit(void); 218 #if 0 219 void process_kernel_args(char *); 220 #endif 221 222 #ifdef KGDB 223 void kgdb_port_init(void); 224 #endif 225 void change_clock(uint32_t v); 226 227 static void init_clocks(void); 228 static void setup_ioports(void); 229 #ifdef DEBUG_IOPORTS 230 void dump_registers(void); 231 #endif 232 233 bs_protos(bs_notimpl); 234 235 #ifndef CONSPEED 236 #define CONSPEED B115200 /* What RedBoot uses */ 237 #endif 238 #ifndef CONMODE 239 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 240 #endif 241 242 int comcnspeed = CONSPEED; 243 int comcnmode = CONMODE; 244 245 /* 246 * void cpu_reboot(int howto, char *bootstr) 247 * 248 * Reboots the system 249 * 250 * Deal with any syncing, unmounting, dumping and shutdown hooks, 251 * then reset the CPU. 252 */ 253 void 254 cpu_reboot(int howto, char *bootstr) 255 { 256 #ifdef DIAGNOSTIC 257 /* info */ 258 printf("boot: howto=%08x curproc=%p\n", howto, curproc); 259 #endif 260 261 /* 262 * If we are still cold then hit the air brakes 263 * and crash to earth fast 264 */ 265 if (cold) { 266 doshutdownhooks(); 267 pmf_system_shutdown(boothowto); 268 printf("The operating system has halted.\n"); 269 printf("Please press any key to reboot.\n\n"); 270 cngetc(); 271 printf("rebooting...\n"); 272 cpu_reset(); 273 /*NOTREACHED*/ 274 } 275 276 /* Disable console buffering */ 277 /* cnpollc(1);*/ 278 279 /* 280 * If RB_NOSYNC was not specified sync the discs. 281 * Note: Unless cold is set to 1 here, syslogd will die during the 282 * unmount. It looks like syslogd is getting woken up only to find 283 * that it cannot page part of the binary in as the filesystem has 284 * been unmounted. 285 */ 286 if (!(howto & RB_NOSYNC)) 287 bootsync(); 288 289 /* Say NO to interrupts */ 290 splhigh(); 291 292 /* Do a dump if requested. */ 293 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 294 dumpsys(); 295 296 /* Run any shutdown hooks */ 297 doshutdownhooks(); 298 299 pmf_system_shutdown(boothowto); 300 301 /* Make sure IRQ's are disabled */ 302 IRQdisable; 303 304 if (howto & RB_HALT) { 305 printf("The operating system has halted.\n"); 306 printf("Please press any key to reboot.\n\n"); 307 cngetc(); 308 } 309 310 printf("rebooting...\n"); 311 cpu_reset(); 312 /*NOTREACHED*/ 313 } 314 315 /* 316 * Static device mappings. These peripheral registers are mapped at 317 * fixed virtual addresses very early in netwalker_start() so that we 318 * can use them while booting the kernel, and stay at the same address 319 * throughout whole kernel's life time. 320 * 321 * We use this table twice; once with bootstrap page table, and once 322 * with kernel's page table which we build up in initarm(). 323 */ 324 325 #define _A(a) ((a) & ~L1_S_OFFSET) 326 #define _S(s) (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1)) 327 328 static const struct pmap_devmap netwalker_devmap[] = { 329 { 330 /* for UART1, IOMUXC */ 331 NETWALKER_IO_VBASE0, 332 _A(NETWALKER_IO_PBASE0), 333 L1_S_SIZE * 4, 334 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE 335 }, 336 {0, 0, 0, 0, 0 } 337 }; 338 339 #ifndef MEMSTART 340 #define MEMSTART 0x90000000 341 #endif 342 #ifndef MEMSIZE 343 #define MEMSIZE 512 344 #endif 345 346 /* 347 * u_int initarm(...) 348 * 349 * Initial entry point on startup. This gets called before main() is 350 * entered. 351 * It should be responsible for setting up everything that must be 352 * in place when main is called. 353 * This includes 354 * Taking a copy of the boot configuration structure. 355 * Initialising the physical console so characters can be printed. 356 * Setting up page tables for the kernel 357 * Relocating the kernel to the bottom of physical memory 358 */ 359 u_int 360 initarm(void *arg) 361 { 362 int loop; 363 int loop1; 364 vaddr_t l1pagetable; 365 366 #ifdef RBFLAGS 367 boothowto |= RBFLAGS; 368 #endif 369 370 disable_interrupts(I32_bit|F32_bit); 371 /* XXX move to netwalker_start.S */ 372 373 /* Register devmap for devices we mapped in start */ 374 pmap_devmap_register(netwalker_devmap); 375 376 setup_ioports(); 377 378 consinit(); 379 380 #ifdef DEBUG_IOPORTS 381 dump_registers(); 382 #endif 383 384 /* 385 * Heads up ... Setup the CPU / MMU / TLB functions 386 */ 387 if (set_cpufuncs()) 388 panic("cpu not recognized!"); 389 390 #ifdef NO_POWERSAVE 391 cpu_do_powersave=0; 392 #endif 393 394 init_clocks(); 395 396 #ifdef KGDB 397 kgdb_port_init(); 398 #endif 399 400 /* Talk to the user */ 401 printf("\nNetBSD/evbarm (netwalker) booting ...\n"); 402 403 /* 404 * Ok we have the following memory map 405 * 406 * Physical Address Range Description 407 * ----------------------- ---------------------------------- 408 * 409 * 0x90000000 - 0x97FFFFFF DDR SDRAM (128MByte) 410 * 411 * The initarm() has the responsibility for creating the kernel 412 * page tables. 413 * It must also set up various memory pointers that are used 414 * by pmap etc. 415 */ 416 417 #if 0 418 /* 419 * Examine the boot args string for options we need to know about 420 * now. 421 */ 422 process_kernel_args((char *)nwbootinfo.bt_args); 423 #endif 424 425 #ifdef VERBOSE_INIT_ARM 426 printf("initarm: Configuring system ...\n"); 427 #endif 428 /* Fake bootconfig structure for the benefit of pmap.c */ 429 /* XXX must make the memory description h/w independent */ 430 bootconfig.dramblocks = 1; 431 bootconfig.dram[0].address = MEMSTART; 432 bootconfig.dram[0].pages = (MEMSIZE * 1024 * 1024)/ PAGE_SIZE; 433 434 /* 435 * Set up the variables that define the availablilty of 436 * physical memory. For now, we're going to set 437 * physical_freestart to 0x80100000 (where the kernel 438 * was loaded), and allocate the memory we need downwards. 439 * If we get too close to the bottom of SDRAM, we 440 * will panic. We will update physical_freestart and 441 * physical_freeend later to reflect what pmap_bootstrap() 442 * wants to see. 443 * 444 * XXX pmap_bootstrap() needs an enema. 445 */ 446 physical_start = bootconfig.dram[0].address; 447 physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE); 448 449 physical_freestart = 0x90000000UL; /* top of loadaddres */ 450 physical_freeend = 0x90100000UL; /* base of kernel */ 451 452 physmem = (physical_end - physical_start) / PAGE_SIZE; 453 454 #ifdef VERBOSE_INIT_ARM 455 /* Tell the user about the memory */ 456 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 457 physical_start, physical_end - 1); 458 #endif 459 460 /* 461 * Okay, the kernel starts 1MB in from the bottom of physical 462 * memory. We are going to allocate our bootstrap pages downwards 463 * from there. 464 * 465 * We need to allocate some fixed page tables to get the kernel 466 * going. We allocate one page directory and a number of page 467 * tables and store the physical addresses in the kernel_pt_table 468 * array. 469 * 470 * The kernel page directory must be on a 16K boundary. The page 471 * tables must be on 4K boundaries. What we do is allocate the 472 * page directory on the first 16K boundary that we encounter, and 473 * the page tables on 4K boundaries otherwise. Since we allocate 474 * at least 3 L2 page tables, we are guaranteed to encounter at 475 * least one 16K aligned region. 476 */ 477 478 #ifdef VERBOSE_INIT_ARM 479 printf("Allocating page tables\n"); 480 #endif 481 482 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 483 484 #ifdef VERBOSE_INIT_ARM 485 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 486 physical_freestart, free_pages, free_pages); 487 #endif 488 489 /* Define a macro to simplify memory allocation */ 490 #define valloc_pages(var, np) \ 491 alloc_pages((var).pv_pa, (np)); \ 492 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 493 494 #define alloc_pages(var, np) \ 495 physical_freeend -= ((np) * PAGE_SIZE); \ 496 if (physical_freeend < physical_freestart) \ 497 panic("initarm: out of memory"); \ 498 (var) = physical_freeend; \ 499 free_pages -= (np); \ 500 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 501 502 loop1 = 0; 503 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 504 /* Are we 16KB aligned for an L1 ? */ 505 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 506 && kernel_l1pt.pv_pa == 0) { 507 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 508 } else { 509 valloc_pages(kernel_pt_table[loop1], 510 L2_TABLE_SIZE / PAGE_SIZE); 511 ++loop1; 512 } 513 } 514 515 /* This should never be able to happen but better confirm that. */ 516 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 517 panic("initarm: Failed to align the kernel page directory"); 518 519 /* 520 * Allocate a page for the system page mapped to V0x00000000 521 * This page will just contain the system vectors and can be 522 * shared by all processes. 523 */ 524 valloc_pages(systempage, 1); 525 systempage.pv_va = ARM_VECTORS_HIGH; 526 527 /* Allocate stacks for all modes */ 528 valloc_pages(fiqstack, FIQ_STACK_SIZE); 529 valloc_pages(irqstack, IRQ_STACK_SIZE); 530 valloc_pages(abtstack, ABT_STACK_SIZE); 531 valloc_pages(undstack, UND_STACK_SIZE); 532 valloc_pages(kernelstack, UPAGES); 533 534 #ifdef VERBOSE_INIT_ARM 535 printf("FIQ stack: p0x%08lx v0x%08lx\n", fiqstack.pv_pa, 536 fiqstack.pv_va); 537 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 538 irqstack.pv_va); 539 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 540 abtstack.pv_va); 541 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 542 undstack.pv_va); 543 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 544 kernelstack.pv_va); 545 #endif 546 547 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 548 549 /* 550 * Ok we have allocated physical pages for the primary kernel 551 * page tables 552 */ 553 554 #ifdef VERBOSE_INIT_ARM 555 printf("Creating L1 page table at p0x%08lx v0x%08lx\n", 556 kernel_l1pt.pv_pa, kernel_l1pt.pv_va); 557 #endif 558 559 /* 560 * Now we start construction of the L1 page table 561 * We start by mapping the L2 page tables into the L1. 562 * This means that we can replace L1 mappings later on if necessary 563 */ 564 l1pagetable = kernel_l1pt.pv_pa; 565 566 /* Map the L2 pages tables in the L1 page table */ 567 pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1), 568 &kernel_pt_table[KERNEL_PT_SYS]); 569 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 570 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 571 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 572 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 573 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 574 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 575 576 /* update the top of the kernel VM */ 577 pmap_curmaxkvaddr = 578 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 579 580 #ifdef VERBOSE_INIT_ARM 581 printf("Mapping kernel\n"); 582 #endif 583 584 /* Now we fill in the L2 pagetable for the kernel static code/data */ 585 #define round_L_page(x) (((x) + L2_L_OFFSET) & L2_L_FRAME) 586 { 587 size_t textsize = round_L_page((size_t)etext - KERNEL_TEXT_BASE); 588 size_t totalsize = round_L_page((size_t)_end - KERNEL_TEXT_BASE); 589 u_int logical; 590 591 592 #ifdef VERBOSE_INIT_ARM 593 printf("%s: etext %lx, _end %lx\n", 594 __func__, (uintptr_t)etext, (uintptr_t)_end); 595 printf("%s: textsize %#lx, totalsize %#lx\n", 596 __func__, textsize, totalsize); 597 #endif 598 logical = 0x00100000; /* offset of kernel in RAM */ 599 600 /* Map text section read-only. */ 601 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 602 physical_start + logical, textsize, 603 VM_PROT_READ|VM_PROT_EXECUTE, PTE_CACHE); 604 605 /* Map data and bss sections read-write. */ 606 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 607 physical_start + logical, totalsize - textsize, 608 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 609 } 610 611 #ifdef VERBOSE_INIT_ARM 612 printf("Constructing L2 page tables\n"); 613 #endif 614 615 /* Map the stack pages */ 616 pmap_map_chunk(l1pagetable, fiqstack.pv_va, fiqstack.pv_pa, 617 FIQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 618 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 619 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 620 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 621 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 622 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 623 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 624 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 625 UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE); 626 627 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 628 L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE); 629 630 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 631 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 632 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 633 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 634 } 635 636 /* Map the vector page. */ 637 #if 0 638 /* MULTI-ICE requires that page 0 is NC/NB so that it can download the 639 * cache-clean code there. */ 640 pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 641 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE); 642 #else 643 pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 644 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 645 #endif 646 647 /* 648 * map integrated peripherals at same address in l1pagetable 649 * so that we can continue to use console. 650 */ 651 pmap_devmap_bootstrap(l1pagetable, netwalker_devmap); 652 653 /* 654 * Now we have the real page tables in place so we can switch to them. 655 * Once this is done we will be running with the REAL kernel page 656 * tables. 657 */ 658 659 /* 660 * Update the physical_freestart/physical_freeend/free_pages 661 * variables. 662 */ 663 physical_freestart = physical_start + 664 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - KERNEL_BASE); 665 physical_freeend = physical_end; 666 free_pages = 667 (physical_freeend - physical_freestart) / PAGE_SIZE; 668 669 #ifdef VERBOSE_INIT_ARM 670 /* Tell the user about where all the bits and pieces live. */ 671 printf("%22s Physical Virtual Num\n", " "); 672 printf("%22s Starting Ending Starting Ending Pages\n", " "); 673 674 static const char mem_fmt[] = 675 "%20s: 0x%08lx 0x%08lx 0x%08lx 0x%08lx %d\n"; 676 static const char mem_fmt_nov[] = 677 "%20s: 0x%08lx 0x%08lx %d\n"; 678 679 printf(mem_fmt, "SDRAM", physical_start, physical_end-1, 680 KERN_PHYSTOV(physical_start), KERN_PHYSTOV(physical_end-1), 681 physmem); 682 printf(mem_fmt, "text section", 683 (paddr_t)KERNEL_BASE_phys, KERN_VTOPHYS(etext-1), 684 (vaddr_t)KERNEL_BASE_virt, (vaddr_t)etext-1, 685 (int)(round_L_page((size_t)etext - KERNEL_TEXT_BASE) / PAGE_SIZE)); 686 printf(mem_fmt, "data section", 687 KERN_VTOPHYS(__data_start), KERN_VTOPHYS(_edata), 688 (vaddr_t)__data_start, (vaddr_t)_edata, 689 (int)((round_page((vaddr_t)_edata) 690 - trunc_page((vaddr_t)__data_start)) / PAGE_SIZE)); 691 printf(mem_fmt, "bss section", 692 KERN_VTOPHYS(__bss_start), KERN_VTOPHYS(__bss_end__), 693 (vaddr_t)__bss_start, (vaddr_t)__bss_end__, 694 (int)((round_page((vaddr_t)__bss_end__) 695 - trunc_page((vaddr_t)__bss_start)) / PAGE_SIZE)); 696 printf(mem_fmt, "L1 page directory", 697 kernel_l1pt.pv_pa, kernel_l1pt.pv_pa + L1_TABLE_SIZE - 1, 698 kernel_l1pt.pv_va, kernel_l1pt.pv_va + L1_TABLE_SIZE - 1, 699 L1_TABLE_SIZE / PAGE_SIZE); 700 printf(mem_fmt, "Exception Vectors", 701 systempage.pv_pa, systempage.pv_pa + PAGE_SIZE - 1, 702 systempage.pv_va, systempage.pv_va + PAGE_SIZE - 1, 703 1); 704 printf(mem_fmt, "FIQ stack", 705 fiqstack.pv_pa, fiqstack.pv_pa + (FIQ_STACK_SIZE * PAGE_SIZE) - 1, 706 fiqstack.pv_va, fiqstack.pv_va + (FIQ_STACK_SIZE * PAGE_SIZE) - 1, 707 FIQ_STACK_SIZE); 708 printf(mem_fmt, "IRQ stack", 709 irqstack.pv_pa, irqstack.pv_pa + (IRQ_STACK_SIZE * PAGE_SIZE) - 1, 710 irqstack.pv_va, irqstack.pv_va + (IRQ_STACK_SIZE * PAGE_SIZE) - 1, 711 IRQ_STACK_SIZE); 712 printf(mem_fmt, "ABT stack", 713 abtstack.pv_pa, abtstack.pv_pa + (ABT_STACK_SIZE * PAGE_SIZE) - 1, 714 abtstack.pv_va, abtstack.pv_va + (ABT_STACK_SIZE * PAGE_SIZE) - 1, 715 ABT_STACK_SIZE); 716 printf(mem_fmt, "UND stack", 717 undstack.pv_pa, undstack.pv_pa + (UND_STACK_SIZE * PAGE_SIZE) - 1, 718 undstack.pv_va, undstack.pv_va + (UND_STACK_SIZE * PAGE_SIZE) - 1, 719 UND_STACK_SIZE); 720 printf(mem_fmt, "SVC stack", 721 kernelstack.pv_pa, kernelstack.pv_pa + (UPAGES * PAGE_SIZE) - 1, 722 kernelstack.pv_va, kernelstack.pv_va + (UPAGES * PAGE_SIZE) - 1, 723 UPAGES); 724 printf(mem_fmt_nov, "Message Buffer", 725 msgbufphys, msgbufphys + round_page(MSGBUFSIZE) - 1, round_page(MSGBUFSIZE) / PAGE_SIZE); 726 printf(mem_fmt, "Free Memory", physical_freestart, physical_freeend-1, 727 KERN_PHYSTOV(physical_freestart), KERN_PHYSTOV(physical_freeend-1), 728 free_pages); 729 #endif 730 731 /* Switch tables */ 732 #ifdef VERBOSE_INIT_ARM 733 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 734 physical_freestart, free_pages, free_pages); 735 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 736 #endif 737 738 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 739 cpu_setttb(kernel_l1pt.pv_pa, true); 740 cpu_tlb_flushID(); 741 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 742 743 /* 744 * Moved from cpu_startup() as data_abort_handler() references 745 * this during uvm init 746 */ 747 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 748 749 #ifdef VERBOSE_INIT_ARM 750 printf("bootstrap done.\n"); 751 #endif 752 753 arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 754 755 /* 756 * Pages were allocated during the secondary bootstrap for the 757 * stacks for different CPU modes. 758 * We must now set the r13 registers in the different CPU modes to 759 * point to these stacks. 760 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 761 * of the stack memory. 762 */ 763 #ifdef VERBOSE_INIT_ARM 764 printf("init subsystems: stacks "); 765 #endif 766 set_stackptr(PSR_FIQ32_MODE, fiqstack.pv_va + FIQ_STACK_SIZE * PAGE_SIZE); 767 set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 768 set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 769 set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 770 771 /* 772 * Well we should set a data abort handler. 773 * Once things get going this will change as we will need a proper 774 * handler. 775 * Until then we will use a handler that just panics but tells us 776 * why. 777 * Initialisation of the vectors will just panic on a data abort. 778 * This just fills in a slightly better one. 779 */ 780 #ifdef VERBOSE_INIT_ARM 781 printf("vectors "); 782 #endif 783 data_abort_handler_address = (u_int)data_abort_handler; 784 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 785 undefined_handler_address = (u_int)undefinedinstruction_bounce; 786 787 /* Initialise the undefined instruction handlers */ 788 #ifdef VERBOSE_INIT_ARM 789 printf("undefined "); 790 #endif 791 undefined_init(); 792 793 /* Load memory into UVM. */ 794 #ifdef VERBOSE_INIT_ARM 795 printf("page "); 796 #endif 797 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 798 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 799 atop(physical_freestart), atop(physical_freeend), 800 VM_FREELIST_DEFAULT); 801 802 /* Boot strap pmap telling it where the kernel page table is */ 803 #ifdef VERBOSE_INIT_ARM 804 printf("pmap "); 805 #endif 806 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 807 808 #ifdef __HAVE_MEMORY_DISK__ 809 md_root_setconf(memory_disk, sizeof memory_disk); 810 #endif 811 812 #ifdef VERBOSE_INIT_ARM 813 printf("done.\n"); 814 #endif 815 816 /* disable power down counter in watch dog, 817 This must be done within 16 seconds of start-up. */ 818 ioreg16_write(NETWALKER_WDOG_VBASE + IMX_WDOG_WMCR, 0); 819 820 #ifdef IPKDB 821 /* Initialise ipkdb */ 822 ipkdb_init(); 823 if (boothowto & RB_KDB) 824 ipkdb_connect(0); 825 #endif 826 827 #ifdef KGDB 828 if (boothowto & RB_KDB) { 829 kgdb_debug_init = 1; 830 kgdb_connect(1); 831 } 832 #endif 833 834 #ifdef DDB 835 #ifdef VERBOSE_INIT_ARM 836 printf("ddb "); 837 #endif 838 db_machine_init(); 839 840 /* Firmware doesn't load symbols. */ 841 ddb_init(0, NULL, NULL); 842 843 if (boothowto & RB_KDB) 844 Debugger(); 845 #endif 846 847 848 849 printf("initarm done.\n"); 850 851 /* We return the new stack pointer address */ 852 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 853 } 854 855 #if 0 856 void 857 process_kernel_args(char *args) 858 { 859 860 boothowto = 0; 861 862 /* Make a local copy of the bootargs */ 863 strncpy(bootargs, args, MAX_BOOT_STRING); 864 865 args = bootargs; 866 boot_file = bootargs; 867 868 /* Skip the kernel image filename */ 869 while (*args != ' ' && *args != 0) 870 ++args; 871 872 if (*args != 0) 873 *args++ = 0; 874 875 while (*args == ' ') 876 ++args; 877 878 boot_args = args; 879 880 printf("bootfile: %s\n", boot_file); 881 printf("bootargs: %s\n", boot_args); 882 883 parse_mi_bootargs(boot_args); 884 } 885 #endif 886 887 static void 888 init_clocks(void) 889 { 890 cortex_pmc_ccnt_init(); 891 } 892 893 struct iomux_setup { 894 /* iomux registers are 32-bit wide, but upper 16 bits are not 895 * used. */ 896 uint16_t reg; 897 uint16_t val; 898 }; 899 900 #define IOMUX_M(padname, mux) \ 901 IOMUX_DATA(__CONCAT(IOMUXC_SW_MUX_CTL_PAD_,padname), mux) 902 903 #define IOMUX_P(padname, pad) \ 904 IOMUX_DATA(__CONCAT(IOMUXC_SW_PAD_CTL_PAD_,padname), pad) 905 906 #define IOMUX_MP(padname, mux, pad) \ 907 IOMUX_M(padname, mux), \ 908 IOMUX_P(padname, pad) 909 910 911 #define IOMUX_DATA(offset, value) \ 912 { \ 913 .reg = (offset), \ 914 .val = (value), \ 915 } 916 917 918 /* 919 * set same values to IOMUX registers as linux kernel does 920 */ 921 const struct iomux_setup iomux_setup_data[] = { 922 #define HYS PAD_CTL_HYS 923 #define ODE PAD_CTL_ODE 924 #define DSEHIGH PAD_CTL_DSE_HIGH 925 #define DSEMID PAD_CTL_DSE_MID 926 #define DSELOW PAD_CTL_DSE_LOW 927 #define DSEMAX PAD_CTL_DSE_MAX 928 #define SRE PAD_CTL_SRE 929 #define KEEPER PAD_CTL_KEEPER 930 #define PULL PAD_CTL_PULL 931 #define PU_22K PAD_CTL_PUS_22K_PU 932 #define PU_47K PAD_CTL_PUS_47K_PU 933 #define PU_100K PAD_CTL_PUS_100K_PU 934 #define PD_100K PAD_CTL_PUS_100K_PD 935 #define HVE PAD_CTL_HVE /* Low output voltage */ 936 937 #define ALT0 IOMUX_CONFIG_ALT0 938 #define ALT1 IOMUX_CONFIG_ALT1 939 #define ALT2 IOMUX_CONFIG_ALT2 940 #define ALT3 IOMUX_CONFIG_ALT3 941 #define ALT4 IOMUX_CONFIG_ALT4 942 #define ALT5 IOMUX_CONFIG_ALT5 943 #define ALT6 IOMUX_CONFIG_ALT6 944 #define ALT7 IOMUX_CONFIG_ALT7 945 #define SION IOMUX_CONFIG_SION 946 947 /* left button */ 948 IOMUX_MP(EIM_EB2, ALT1, HYS), 949 /* right button */ 950 IOMUX_MP(EIM_EB3, ALT1, HYS), 951 952 /* UART1 */ 953 IOMUX_MP(UART1_RXD, ALT0, HYS | PULL | DSEHIGH | SRE), 954 IOMUX_MP(UART1_TXD, ALT0, HYS | PULL | DSEHIGH | SRE), 955 IOMUX_MP(UART1_RTS, ALT0, HYS | PULL | DSEHIGH), 956 IOMUX_MP(UART1_CTS, ALT0, HYS | PULL | DSEHIGH), 957 958 /* LCD Display */ 959 IOMUX_M(DI1_PIN2, ALT0), 960 IOMUX_M(DI1_PIN3, ALT0), 961 962 IOMUX_DATA(IOMUXC_SW_PAD_CTL_GRP_DISP1_PKE0, PAD_CTL_PKE), 963 #if 0 964 IOMUX_MP(DISP1_DAT0, ALT0, SRE | DSEMAX | PULL), 965 IOMUX_MP(DISP1_DAT1, ALT0, SRE | DSEMAX | PULL), 966 IOMUX_MP(DISP1_DAT2, ALT0, SRE | DSEMAX | PULL), 967 IOMUX_MP(DISP1_DAT3, ALT0, SRE | DSEMAX | PULL), 968 IOMUX_MP(DISP1_DAT4, ALT0, SRE | DSEMAX | PULL), 969 IOMUX_MP(DISP1_DAT5, ALT0, SRE | DSEMAX | PULL), 970 #endif 971 IOMUX_M(DISP1_DAT6, ALT0), 972 IOMUX_M(DISP1_DAT7, ALT0), 973 IOMUX_M(DISP1_DAT8, ALT0), 974 IOMUX_M(DISP1_DAT9, ALT0), 975 IOMUX_M(DISP1_DAT10, ALT0), 976 IOMUX_M(DISP1_DAT11, ALT0), 977 IOMUX_M(DISP1_DAT12, ALT0), 978 IOMUX_M(DISP1_DAT13, ALT0), 979 IOMUX_M(DISP1_DAT14, ALT0), 980 IOMUX_M(DISP1_DAT15, ALT0), 981 IOMUX_M(DISP1_DAT16, ALT0), 982 IOMUX_M(DISP1_DAT17, ALT0), 983 IOMUX_M(DISP1_DAT18, ALT0), 984 IOMUX_M(DISP1_DAT19, ALT0), 985 IOMUX_M(DISP1_DAT20, ALT0), 986 IOMUX_M(DISP1_DAT21, ALT0), 987 IOMUX_M(DISP1_DAT22, ALT0), 988 IOMUX_M(DISP1_DAT23, ALT0), 989 990 IOMUX_MP(DI1_D0_CS, ALT4, KEEPER | DSEHIGH | SRE), /* GPIO3_3 */ 991 IOMUX_DATA(IOMUXC_GPIO3_IPP_IND_G_IN_3_SELECT_INPUT, INPUT_DAISY_0), 992 IOMUX_MP(CSI2_D12, ALT3, KEEPER | DSEHIGH | SRE), /* GPIO4_9 */ 993 IOMUX_MP(CSI2_D13, ALT3, KEEPER | DSEHIGH | SRE), 994 IOMUX_MP(GPIO1_2, ALT0, ODE | DSEHIGH), 995 IOMUX_MP(EIM_A19, ALT1, SRE | DSEHIGH), 996 /* XXX VGA pins */ 997 IOMUX_M(DI_GP4, ALT4), 998 IOMUX_M(GPIO1_8, SION | ALT0), 999 1000 1001 #if 0 1002 IOMUX_MP(GPIO1_2, ALT1, DSEHIGH | ODE), /* LCD backlight by PWM */ 1003 #else 1004 IOMUX_P(GPIO1_2, DSEHIGH | ODE), /* LCD backlight by GPIO */ 1005 #endif 1006 IOMUX_MP(GPIO1_8, SION | ALT0, HYS | DSEMID | PU_100K), 1007 /* I2C1 */ 1008 IOMUX_MP(EIM_D16, SION | ALT4, HYS | ODE | DSEHIGH | SRE), 1009 IOMUX_MP(EIM_D19, SION | ALT4, SRE), /* SCL */ 1010 IOMUX_MP(EIM_A19, ALT1, SRE | DSEHIGH), /* GPIO2_13 */ 1011 1012 #if 0 1013 IOMUX_MP(EIM_A23, ALT1, 0), 1014 #else 1015 IOMUX_M(EIM_A23, ALT1), /* GPIO2_17 */ 1016 #endif 1017 1018 /* BT */ 1019 IOMUX_M(EIM_D20, ALT1), /* GPIO2_4 BT host wakeup */ 1020 IOMUX_M(EIM_D22, ALT1), /* GPIO2_6 BT RESET */ 1021 IOMUX_M(EIM_D23, ALT1), /* GPIO2_7 BT wakeup */ 1022 1023 /* UART3 */ 1024 IOMUX_MP(EIM_D24, ALT3, KEEPER | PU_100K | DSEHIGH | SRE), 1025 IOMUX_MP(EIM_D25, ALT3, KEEPER | PU_100K | DSEHIGH | SRE), /* CTS */ 1026 IOMUX_MP(EIM_D26, ALT3, KEEPER | PU_100K | DSEHIGH | SRE), /* TXD */ 1027 IOMUX_MP(EIM_D27, ALT3, KEEPER | PU_100K | DSEHIGH | SRE), /* RTS */ 1028 IOMUX_M(NANDF_D15, ALT3), /* GPIO3_25 */ 1029 IOMUX_MP(NANDF_D14, ALT3, HYS | PULL | PU_100K ), /* GPIO3_26 */ 1030 IOMUX_M(CSI1_D9, ALT3), /* GPIO3_13 */ 1031 IOMUX_M(CSI1_VSYNC, ALT3), /* GPIO3_14 */ 1032 IOMUX_M(CSI1_HSYNC, ALT3), /* GPIO3_15 */ 1033 1034 /* audio pins */ 1035 IOMUX_MP(AUD3_BB_TXD, ALT0, DSEHIGH | PU_100K | SRE), 1036 /* XXX: linux code: 1037 (PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | 1038 PAD_CTL_100K_PU | PAD_CTL_HYS_NONE | 1039 PAD_CTL_DDR_INPUT_CMOS | PAD_CTL_DRV_VOT_LOW), */ 1040 1041 IOMUX_MP(AUD3_BB_RXD, ALT0, KEEPER | DSEHIGH | SRE), 1042 IOMUX_MP(AUD3_BB_CK, ALT0, KEEPER | DSEHIGH | SRE), 1043 IOMUX_MP(AUD3_BB_FS, ALT0, KEEPER | DSEHIGH | SRE), 1044 1045 /* headphone detect */ 1046 IOMUX_MP(NANDF_D14, ALT3, HYS | PULL | PU_100K), 1047 IOMUX_MP(CSPI1_RDY, ALT3, SRE | DSEHIGH), 1048 /* XXX more audio pins ? */ 1049 1050 /* CSPI */ 1051 /* ??? doesn't work ??? */ 1052 IOMUX_P(CSPI1_MOSI, HYS | PULL | PD_100K | DSEHIGH | SRE), 1053 IOMUX_P(CSPI1_MISO, HYS | PULL | PD_100K | DSEHIGH | SRE), 1054 IOMUX_M(CSPI1_SS0, ALT3), 1055 IOMUX_MP(CSPI1_SS1, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1056 IOMUX_MP(DI1_PIN11, ALT7, HYS | PULL | DSEHIGH | SRE), 1057 IOMUX_P(CSPI1_SCLK, HYS | KEEPER | DSEHIGH | SRE), 1058 /* 26M Osc */ 1059 IOMUX_MP(DI1_PIN12, ALT4, KEEPER | DSEHIGH | SRE), /* GPIO3_1 */ 1060 1061 /* I2C */ 1062 IOMUX_MP(KEY_COL4, SION | ALT3, SRE), 1063 IOMUX_DATA(IOMUXC_I2C2_IPP_SCL_IN_SELECT_INPUT, INPUT_DAISY_1), 1064 IOMUX_MP(KEY_COL5, SION | ALT3, HYS | ODE | DSEHIGH | SRE), 1065 IOMUX_DATA(IOMUXC_I2C2_IPP_SDA_IN_SELECT_INPUT, INPUT_DAISY_1), 1066 IOMUX_DATA(IOMUXC_UART3_IPP_UART_RTS_B_SELECT_INPUT, INPUT_DAISY_3), 1067 #if 1 1068 /* NAND */ 1069 IOMUX_MP(NANDF_WE_B, ALT0, HVE | DSEHIGH | PULL | PU_47K), 1070 IOMUX_MP(NANDF_RE_B, ALT0, HVE | DSEHIGH | PULL | PU_47K), 1071 IOMUX_MP(NANDF_ALE, ALT0, HVE | DSEHIGH | KEEPER), 1072 IOMUX_MP(NANDF_CLE, ALT0, HVE | DSEHIGH | KEEPER), 1073 IOMUX_MP(NANDF_WP_B, ALT0, HVE | DSEHIGH | PULL | PU_100K), 1074 IOMUX_MP(NANDF_RB0, ALT0, HVE | DSELOW | PULL | PU_100K), 1075 IOMUX_MP(NANDF_RB1, ALT0, HVE | DSELOW | PULL | PU_100K), 1076 IOMUX_MP(NANDF_D7, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1077 IOMUX_MP(NANDF_D6, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1078 IOMUX_MP(NANDF_D5, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1079 IOMUX_MP(NANDF_D4, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1080 IOMUX_MP(NANDF_D3, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1081 IOMUX_MP(NANDF_D2, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1082 IOMUX_MP(NANDF_D1, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1083 IOMUX_MP(NANDF_D0, ALT0, HVE | DSEHIGH | KEEPER | PU_100K), 1084 #endif 1085 1086 /* Batttery pins */ 1087 IOMUX_MP(NANDF_D13, ALT3, HYS | DSEHIGH), 1088 IOMUX_MP(NANDF_D12, ALT3, HYS | DSEHIGH), 1089 #if 0 1090 IOMUX_MP(NANDF_D11, ALT3, HYS | DSEHIGH), 1091 #endif 1092 IOMUX_MP(NANDF_D10, ALT3, HYS | DSEHIGH), 1093 1094 /* SD1 */ 1095 IOMUX_MP(SD1_CMD, SION | ALT0, DSEHIGH | SRE), 1096 IOMUX_MP(SD1_CLK, SION | ALT0, KEEPER | PU_47K | DSEHIGH), 1097 IOMUX_MP(SD1_DATA0, ALT0, DSEHIGH | SRE), 1098 IOMUX_MP(SD1_DATA1, ALT0, DSEHIGH | SRE), 1099 IOMUX_MP(SD1_DATA2, ALT0, DSEHIGH | SRE), 1100 IOMUX_MP(SD1_DATA3, ALT0, DSEHIGH | SRE), 1101 IOMUX_MP(GPIO1_0, SION | ALT0, HYS | PU_100K), 1102 1103 /* SD2 */ 1104 IOMUX_P(SD2_CMD, HVE | PU_22K | DSEMAX | SRE), 1105 IOMUX_P(SD2_CLK, HVE | PU_22K | DSEMAX | SRE), 1106 IOMUX_P(SD2_DATA0, HVE | PU_22K | DSEMAX | SRE), 1107 IOMUX_P(SD2_DATA1, HVE | PU_22K | DSEMAX | SRE), 1108 IOMUX_P(SD2_DATA2, HVE | PU_22K | DSEMAX | SRE), 1109 IOMUX_P(SD2_DATA3, HVE | PU_22K | DSEMAX | SRE), 1110 1111 /* USB */ 1112 IOMUX_MP(USBH1_CLK, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1113 IOMUX_MP(USBH1_DIR, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1114 IOMUX_MP(USBH1_STP, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1115 IOMUX_MP(USBH1_NXT, ALT0, HYS | KEEPER | PU_100K | DSEHIGH | SRE), 1116 IOMUX_MP(USBH1_DATA0, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1117 IOMUX_MP(USBH1_DATA1, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1118 IOMUX_MP(USBH1_DATA2, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1119 IOMUX_MP(USBH1_DATA3, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1120 IOMUX_MP(USBH1_DATA4, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1121 IOMUX_MP(USBH1_DATA5, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1122 IOMUX_MP(USBH1_DATA6, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1123 IOMUX_MP(USBH1_DATA7, ALT0, HYS | KEEPER | DSEHIGH | SRE), 1124 IOMUX_MP(EIM_D17, ALT1, KEEPER | DSEHIGH | SRE), 1125 IOMUX_MP(EIM_D21, ALT1, KEEPER | DSEHIGH | SRE), 1126 IOMUX_P(GPIO1_7, /*ALT0,*/ DSEHIGH | SRE), /* USB Hub reset */ 1127 1128 #undef ODE 1129 #undef HYS 1130 #undef SRE 1131 #undef PULL 1132 #undef KEEPER 1133 #undef PU_22K 1134 #undef PU_47K 1135 #undef PU_100K 1136 #undef PD_100K 1137 #undef HVE 1138 #undef DSEMAX 1139 #undef DSEHIGH 1140 #undef DSEMID 1141 #undef DSELOW 1142 1143 #undef ALT0 1144 #undef ALT1 1145 #undef ALT2 1146 #undef ALT3 1147 #undef ALT4 1148 #undef ALT5 1149 #undef ALT6 1150 #undef ALT7 1151 #undef SION 1152 }; 1153 1154 static void 1155 setup_ioports(void) 1156 { 1157 int i; 1158 const struct iomux_setup *p; 1159 1160 /* Initialize all IOMUX registers */ 1161 for (i=0; i < __arraycount(iomux_setup_data); ++i) { 1162 p = iomux_setup_data + i; 1163 1164 ioreg_write(NETWALKER_IOMUXC_VBASE + p->reg, 1165 p->val); 1166 } 1167 1168 1169 #if 0 /* already done by bootloader */ 1170 /* GPIO2[22,23]: input (left/right button) 1171 GPIO2[21]: input (power button) */ 1172 ioreg_write(NETWALKER_GPIO_VBASE(2) + GPIO_DIR, 1173 ~__BITS(21,23) & 1174 ioreg_read(NETWALKER_GPIO_VBASE(2) + GPIO_DIR)); 1175 #endif 1176 1177 #if 0 /* already done by bootloader */ 1178 /* GPIO4[12]: input (cover switch) */ 1179 ioreg_write(NETWALKER_GPIO_VBASE(4) + GPIO_DIR, 1180 ~__BIT(12) & 1181 ioreg_read(NETWALKER_GPIO_VBASE(4) + GPIO_DIR)); 1182 #endif 1183 } 1184 1185 1186 #ifdef CONSDEVNAME 1187 const char consdevname[] = CONSDEVNAME; 1188 1189 #ifndef CONMODE 1190 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 1191 #endif 1192 #ifndef CONSPEED 1193 #define CONSPEED 115200 1194 #endif 1195 1196 int consmode = CONMODE; 1197 int consrate = CONSPEED; 1198 1199 #endif /* CONSDEVNAME */ 1200 1201 #ifndef IMXUART_FREQ 1202 #define IMXUART_FREQ 66500000 1203 #endif 1204 1205 void 1206 consinit(void) 1207 { 1208 static int consinit_called = 0; 1209 1210 if (consinit_called) 1211 return; 1212 1213 consinit_called = 1; 1214 1215 #ifdef CONSDEVNAME 1216 1217 #if NIMXUART > 0 1218 imxuart_set_frequency(IMXUART_FREQ, 2); 1219 #endif 1220 1221 #if (NIMXUART > 0) && defined(IMXUARTCONSOLE) 1222 if (strcmp(consdevname, "imxuart") == 0) { 1223 paddr_t consaddr; 1224 #ifdef CONADDR 1225 consaddr = CONADDR; 1226 #else 1227 consaddr = IMX51_UART1_BASE; 1228 #endif 1229 imxuart_cons_attach(&imx_bs_tag, consaddr, consrate, consmode); 1230 return; 1231 } 1232 #endif 1233 1234 #endif 1235 1236 #if (NWSDISPLAY > 0) && defined(IMXLCDCONSOLE) 1237 { 1238 extern void netwalker_cnattach(void); 1239 netwalker_cnattach(); 1240 } 1241 #endif 1242 } 1243 1244 #ifdef KGDB 1245 #ifndef KGDB_DEVNAME 1246 #define KGDB_DEVNAME "imxuart" 1247 #endif 1248 #ifndef KGDB_DEVMODE 1249 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 1250 #endif 1251 1252 const char kgdb_devname[20] = KGDB_DEVNAME; 1253 int kgdb_mode = KGDB_DEVMODE; 1254 int kgdb_addr = KGDB_DEVADDR; 1255 extern int kgdb_rate; /* defined in kgdb_stub.c */ 1256 1257 void 1258 kgdb_port_init(void) 1259 { 1260 #if (NIMXUART > 0) 1261 if (strcmp(kgdb_devname, "imxuart") == 0) { 1262 imxuart_kgdb_attach(&imx_bs_tag, kgdb_addr, 1263 kgdb_rate, kgdb_mode); 1264 return; 1265 } 1266 1267 #endif 1268 } 1269 #endif 1270 1271 1272 #ifdef DEBUG_IOPORTS 1273 static void dump_sub(paddr_t addr, size_t size) 1274 { 1275 paddr_t end = addr + size; 1276 1277 for (; addr < end; addr += 4) { 1278 if (addr % 16 == 0) 1279 printf("%08x: ", (u_int)addr); 1280 printf("%08x ", ioreg_read(addr)); 1281 1282 if (addr % 16 == 12) 1283 printf("\n"); 1284 } 1285 printf("\n"); 1286 } 1287 1288 void 1289 dump_registers(void) 1290 { 1291 paddr_t pa; 1292 int i; 1293 1294 dump_sub(IOMUXC_BASE, IOMUXC_USBOH3_IPP_IND_UH3_STP_SELECT_INPUT + 4); 1295 1296 for (i = 1; i <= 4; ++i) { 1297 dump_sub(GPIO_BASE(i), GPIO_SIZE); 1298 } 1299 1300 printf("\nwatchdog: "); 1301 for (pa = WDOG1_BASE; pa <= WDOG1_BASE + IMX_WDOG_WMCR; 1302 pa += 2) { 1303 printf("%04x ", *(volatile uint16_t *)pa); 1304 } 1305 printf("\n"); 1306 1307 printf("\nCCM\n"); 1308 dump_sub(CCM_BASE, CCM_SIZE); 1309 1310 #if 0 1311 /* disable power down counter in watch dog, 1312 This must be done within 16 seconds of start-up. */ 1313 ioreg16_write(NETWALKER_WDOG_VBASE + IMX_WDOG_WMCR, 0); 1314 1315 /* read left/right buttons */ 1316 for (;;) { 1317 uint32_t reg; 1318 1319 reg = ioreg_read(GPIO_BASE(2) + GPIO_DR); 1320 printf("\r%08x", reg); 1321 reg = ioreg_read(GPIO_BASE(4) + GPIO_DR); 1322 printf(" %08x", reg); 1323 1324 #if 0 1325 ioreg16_write(WDOG1_BASE + IMX_WDOG_WSR, WSR_MAGIC1); 1326 ioreg16_write(WDOG1_BASE + IMX_WDOG_WSR, WSR_MAGIC2); 1327 #endif 1328 1329 } 1330 #endif 1331 1332 } 1333 #endif 1334 1335 1336 #if 0 1337 #include <arm/imx/imxgpiovar.h> 1338 1339 void gpio_test(void) 1340 void 1341 gpio_test(void) 1342 { 1343 int left, right; 1344 1345 gpio_set_direction(GPIO_NO(2, 22), GPIO_DIR_IN); 1346 gpio_set_direction(GPIO_NO(2, 23), GPIO_DIR_IN); 1347 1348 for (;;) { 1349 left = gpio_data_read(GPIO_NO(2, 22)); 1350 right = gpio_data_read(GPIO_NO(2, 23)); 1351 1352 printf("\r%s %s", 1353 left ? "off" : "ON ", 1354 right ? "off" : "ON "); 1355 } 1356 } 1357 #endif 1358
Indexes created Wed Oct 01 15:09:59 GMT 2025