armadillo9_machdep.c revision 1.15 1 /* $NetBSD: armadillo9_machdep.c,v 1.15 2009/08/11 17:04:15 matt Exp $ */
2
3 /*
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Based on code written by Jason R. Thorpe and Steve C. Woodford for
8 * Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed for the NetBSD Project by
21 * Wasabi Systems, Inc.
22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
23 * or promote products derived from this software without specific prior
24 * written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * Copyright (c) 1997,1998 Mark Brinicombe.
41 * Copyright (c) 1997,1998 Causality Limited.
42 * All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Mark Brinicombe
55 * for the NetBSD Project.
56 * 4. The name of the company nor the name of the author may be used to
57 * endorse or promote products derived from this software without specific
58 * prior written permission.
59 *
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
62 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70 * SUCH DAMAGE.
71 *
72 * Machine dependant functions for kernel setup for Armadillo.
73 */
74
75 /* Armadillo-9 physical memory map
76 0000 0000 - 0fff ffff reserved
77 1000 0000 - 1000 000f I/O Control Register
78 1000 0010 - 11dd ffff reserved
79 1200 0000 - 1200 ffff PC/104 I/O space (8bit)
80 1201 0000 - 12ff ffff reserved
81 1300 0000 - 13ff ffff PC/104 Memory space (8bit)
82 1400 0000 - 1fff ffff reserved
83 2000 0000 - 21ff ffff reserved
84 2200 0000 - 2200 ffff PC/104 I/O space (16bit)
85 2201 0000 - 22ff ffff reserved
86 2300 0000 - 23ff ffff PC/104 Memory space (16bit)
87 2400 0000 - 2fff ffff reserved
88 3000 0000 - 3fff ffff reserved
89 4000 0000 - 43ff ffff Compact Flash I/O space
90 4400 0000 - 47ff ffff reserved
91 4800 0000 - 4bff ffff Compact Flash Attribute space
92 4c00 0000 - 4fff ffff Compact Flash memory space
93 5000 0000 - 5fff ffff reserved
94 6000 0000 - 607f ffff Flash Memory (8MByte)
95 6080 0000 - 6fff ffff reserved
96 7000 0000 - 7fff ffff reserved
97 8000 0000 - 8008 ffff EP9315 Internal Register (AHB)
98 8009 0000 - 8009 3fff Internal Boot ROM (16kByte)
99 8009 4000 - 8009 ffff reserved
100 800a 0000 - 800f ffff EP9315 Internal Register (AHB)
101 8010 0000 - 807f ffff reserved
102 8080 0000 - 8094 ffff EP9315 Internal Register (APB)
103 8095 0000 - 8fff ffff reserved
104 9000 0000 - bfff ffff reserved
105 c000 0000 - c1ff ffff SDRAM (32MByte)
106 c200 0000 - c3ff ffff reserved
107 c400 0000 - c5ff ffff SDRAM (32MByte)
108 c600 0000 - cfff ffff reserved
109 d000 0000 - ffff ffff reserved
110 */
111
112 #include <sys/cdefs.h>
113 __KERNEL_RCSID(0, "$NetBSD: armadillo9_machdep.c,v 1.15 2009/08/11 17:04:15 matt Exp $");
114
115 #include "opt_ddb.h"
116 #include "opt_kgdb.h"
117 #include "opt_pmap_debug.h"
118
119 #include <sys/param.h>
120 #include <sys/device.h>
121 #include <sys/systm.h>
122 #include <sys/kernel.h>
123 #include <sys/exec.h>
124 #include <sys/proc.h>
125 #include <sys/msgbuf.h>
126 #include <sys/reboot.h>
127 #include <sys/termios.h>
128 #include <sys/ksyms.h>
129
130 #include <net/if.h>
131 #include <net/if_ether.h>
132
133 #include <uvm/uvm_extern.h>
134
135 #include <dev/cons.h>
136
137 #include <machine/db_machdep.h>
138 #include <ddb/db_sym.h>
139 #include <ddb/db_extern.h>
140
141 #define DRAM_BLOCKS 4
142 #include <machine/bootconfig.h>
143 #include <machine/autoconf.h>
144 #include <machine/bus.h>
145 #include <machine/cpu.h>
146 #include <machine/frame.h>
147 #include <arm/undefined.h>
148
149 #include <arm/arm32/machdep.h>
150
151 #include <arm/ep93xx/ep93xxreg.h>
152 #include <arm/ep93xx/ep93xxvar.h>
153
154 #include "epwdog.h"
155 #if NEPWDOG > 0
156 #include <arm/ep93xx/epwdogvar.h>
157 #endif
158 #include <arm/ep93xx/epwdogreg.h>
159
160 #include <dev/ic/comreg.h>
161 #include <dev/ic/comvar.h>
162
163 #include "epcom.h"
164 #if NEPCOM > 0
165 #include <arm/ep93xx/epcomvar.h>
166 #endif
167
168 #include "isa.h"
169 #if NISA > 0
170 #include <dev/isa/isareg.h>
171 #include <dev/isa/isavar.h>
172 #endif
173
174 #include <machine/isa_machdep.h>
175
176 #include <evbarm/armadillo/armadillo9reg.h>
177 #include <evbarm/armadillo/armadillo9var.h>
178
179 struct armadillo_model_t *armadillo_model = 0;
180 static struct armadillo_model_t armadillo_model_table[] = {
181 { DEVCFG_ARMADILLO9, "Armadillo-9" },
182 { DEVCFG_ARMADILLO210, "Armadillo-210" },
183 { 0, "Armadillo(unknown model)" } };
184
185 #include "ksyms.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 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
190
191 /*
192 * The range 0xc1000000 - 0xccffffff is available for kernel VM space
193 * Core-logic registers and I/O mappings occupy 0xf0000000 - 0xffffffff
194 */
195 #define KERNEL_VM_SIZE 0x0c000000
196
197 /*
198 * Address to call from cpu_reset() to reset the machine.
199 * This is machine architecture dependant as it varies depending
200 * on where the ROM appears when you turn the MMU off.
201 */
202
203 u_int cpu_reset_address = 0x80090000;
204
205 /* Define various stack sizes in pages */
206 #define IRQ_STACK_SIZE 8
207 #define ABT_STACK_SIZE 8
208 #define UND_STACK_SIZE 8
209
210 BootConfig bootconfig; /* Boot config storage */
211 char *boot_args = NULL;
212 char *boot_file = NULL;
213
214 vm_offset_t physical_start;
215 vm_offset_t physical_freestart;
216 vm_offset_t physical_freeend;
217 vm_offset_t physical_freeend_low;
218 vm_offset_t physical_end;
219 u_int free_pages;
220
221 /* Physical and virtual addresses for some global pages */
222 pv_addr_t systempage;
223 pv_addr_t irqstack;
224 pv_addr_t undstack;
225 pv_addr_t abtstack;
226 pv_addr_t kernelstack;
227
228 vm_offset_t msgbufphys;
229
230 static struct arm32_dma_range armadillo9_dma_ranges[4];
231
232 #if NISA > 0
233 extern void isa_armadillo9_init(u_int, u_int);
234 #endif
235
236 extern u_int data_abort_handler_address;
237 extern u_int prefetch_abort_handler_address;
238 extern u_int undefined_handler_address;
239
240 #ifdef PMAP_DEBUG
241 extern int pmap_debug_level;
242 #endif
243
244 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */
245
246 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
247 #define KERNEL_PT_KERNEL_NUM 4
248 /* L2 tables for mapping kernel VM */
249 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
250
251 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
252 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
253
254 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
255
256 struct user *proc0paddr;
257
258 /* Prototypes */
259
260 void consinit(void);
261 /*
262 * Define the default console speed for the machine.
263 */
264 #if NEPCOM > 0
265 #ifndef CONSPEED
266 #define CONSPEED B115200
267 #endif /* ! CONSPEED */
268
269 #ifndef CONMODE
270 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
271 #endif
272
273 #ifndef CONUNIT
274 #define CONUNIT 0
275 #endif
276
277 int comcnspeed = CONSPEED;
278 int comcnmode = CONMODE;
279 const unsigned long comaddr[] = {
280 EP93XX_APB_UART1, EP93XX_APB_UART2 };
281 #endif
282
283 #if KGDB
284 #ifndef KGDB_DEVNAME
285 #error Must define KGDB_DEVNAME
286 #endif
287 const char kgdb_devname[] = KGDB_DEVNAME;
288
289 #ifndef KGDB_DEVADDR
290 #error Must define KGDB_DEVADDR
291 #endif
292 unsigned long kgdb_devaddr = KGDB_DEVADDR;
293
294 #ifndef KGDB_DEVRATE
295 #define KGDB_DEVRATE CONSPEED
296 #endif
297 int kgdb_devrate = KGDB_DEVRATE;
298
299 #ifndef KGDB_DEVMODE
300 #define KGDB_DEVMODE CONMODE
301 #endif
302 int kgdb_devmode = KGDB_DEVMODE;
303 #endif /* KGDB */
304
305 /*
306 * MAC address for the built-in Ethernet.
307 */
308 uint8_t armadillo9_ethaddr[ETHER_ADDR_LEN];
309
310 static void
311 armadillo9_device_register(device_t dev, void *aux)
312 {
313
314 /* MAC address for the built-in Ethernet. */
315 if (device_is_a(dev, "epe")) {
316 prop_data_t pd = prop_data_create_data_nocopy(
317 armadillo9_ethaddr, ETHER_ADDR_LEN);
318 KASSERT(pd != NULL);
319 if (prop_dictionary_set(device_properties(dev),
320 "mac-addr", pd) == false) {
321 printf("WARNING: unable to set mac-addr property "
322 "for %s\n", dev->dv_xname);
323 }
324 prop_object_release(pd);
325 }
326 }
327
328 /*
329 * void cpu_reboot(int howto, char *bootstr)
330 *
331 * Reboots the system
332 *
333 * Deal with any syncing, unmounting, dumping and shutdown hooks,
334 * then reset the CPU.
335 */
336 void
337 cpu_reboot(int howto, char *bootstr)
338 {
339 /*
340 * If we are still cold then hit the air brakes
341 * and crash to earth fast
342 */
343 if (cold) {
344 doshutdownhooks();
345 pmf_system_shutdown(boothowto);
346 printf("\r\n");
347 printf("The operating system has halted.\r\n");
348 printf("Please press any key to reboot.\r\n");
349 cngetc();
350 printf("\r\nrebooting...\r\n");
351 goto reset;
352 }
353
354 /* Disable console buffering */
355
356 /*
357 * If RB_NOSYNC was not specified sync the discs.
358 * Note: Unless cold is set to 1 here, syslogd will die during the
359 * unmount. It looks like syslogd is getting woken up only to find
360 * that it cannot page part of the binary in as the filesystem has
361 * been unmounted.
362 */
363 if (!(howto & RB_NOSYNC))
364 bootsync();
365
366 /* Say NO to interrupts */
367 splhigh();
368
369 /* Do a dump if requested. */
370 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
371 dumpsys();
372
373 /* Run any shutdown hooks */
374 doshutdownhooks();
375
376 pmf_system_shutdown(boothowto);
377
378 /* Make sure IRQ's are disabled */
379 IRQdisable;
380
381 if (howto & RB_HALT) {
382 printf("\r\n");
383 printf("The operating system has halted.\r\n");
384 printf("Please press any key to reboot.\r\n");
385 cngetc();
386 }
387
388 printf("\r\nrebooting...\r\n");
389 reset:
390 /*
391 * Make really really sure that all interrupts are disabled,
392 * and poke the Internal Bus and Peripheral Bus reset lines.
393 */
394 (void) disable_interrupts(I32_bit|F32_bit);
395 #if NEPWDOG > 0
396 epwdog_reset();
397 #else
398 {
399 u_int32_t ctrl = EP93XX_APB_VBASE + EP93XX_APB_WDOG + EP93XX_WDOG_Ctrl;
400 u_int32_t val = EP93XX_WDOG_ENABLE;
401 __asm volatile (
402 "str %1, [%0]\n"
403 :
404 : "r" (ctrl), "r" (val)
405 );
406 }
407 #endif
408 for (;;);
409 }
410
411 /* Static device mappings. */
412 static const struct pmap_devmap armadillo9_devmap[] = {
413 {
414 EP93XX_AHB_VBASE,
415 EP93XX_AHB_HWBASE,
416 EP93XX_AHB_SIZE,
417 VM_PROT_READ|VM_PROT_WRITE,
418 PTE_NOCACHE,
419 },
420
421 {
422 EP93XX_APB_VBASE,
423 EP93XX_APB_HWBASE,
424 EP93XX_APB_SIZE,
425 VM_PROT_READ|VM_PROT_WRITE,
426 PTE_NOCACHE,
427 },
428
429 {
430 EP93XX_PCMCIA0_VBASE,
431 EP93XX_PCMCIA0_HWBASE,
432 EP93XX_PCMCIA_SIZE,
433 VM_PROT_READ|VM_PROT_WRITE,
434 PTE_NOCACHE,
435 },
436
437 /*
438 * IO8 and IO16 space *must* be mapped contiguously with
439 * IO8_VA == IO16_VA - 64 Mbytes. ISA busmap driver depends
440 * on that!
441 */
442 {
443 ARMADILLO9_IO8_VBASE,
444 ARMADILLO9_IO8_HWBASE,
445 ARMADILLO9_IO8_SIZE,
446 VM_PROT_READ|VM_PROT_WRITE,
447 PTE_NOCACHE,
448 },
449
450 {
451 ARMADILLO9_IO16_VBASE,
452 ARMADILLO9_IO16_HWBASE,
453 ARMADILLO9_IO16_SIZE,
454 VM_PROT_READ|VM_PROT_WRITE,
455 PTE_NOCACHE,
456 },
457
458 {
459 0,
460 0,
461 0,
462 0,
463 0,
464 }
465 };
466
467 /*
468 * u_int initarm(...)
469 *
470 * Initial entry point on startup. This gets called before main() is
471 * entered.
472 * It should be responsible for setting up everything that must be
473 * in place when main is called.
474 * This includes
475 * Taking a copy of the boot configuration structure.
476 * Initialising the physical console so characters can be printed.
477 * Setting up page tables for the kernel
478 * Initialising interrupt controllers to a sane default state
479 */
480 u_int
481 initarm(void *arg)
482 {
483 int loop;
484 int loop1;
485 u_int l1pagetable;
486 struct bootparam_tag *bootparam_p;
487 unsigned long devcfg;
488
489 /*
490 * Since we map the on-board devices VA==PA, and the kernel
491 * is running VA==PA, it's possible for us to initialize
492 * the console now.
493 */
494 consinit();
495
496 /* identify model */
497 devcfg = *((volatile unsigned long*)(EP93XX_APB_HWBASE
498 + EP93XX_APB_SYSCON
499 + EP93XX_SYSCON_DeviceCfg));
500 for (armadillo_model = &armadillo_model_table[0];
501 armadillo_model->devcfg; armadillo_model++)
502 if (devcfg == armadillo_model->devcfg)
503 break;
504
505 /* Talk to the user */
506 printf("\nNetBSD/%s booting ...\n", armadillo_model->name);
507
508 /* set some informations from bootloader */
509 bootparam_p = (struct bootparam_tag *)bootparam;
510 bootconfig.dramblocks = 0;
511 while (bootparam_p->hdr.tag != BOOTPARAM_TAG_NONE) {
512 switch (bootparam_p->hdr.tag) {
513 case BOOTPARAM_TAG_MEM:
514 if (bootconfig.dramblocks < DRAM_BLOCKS) {
515 #ifdef VERBOSE_INIT_ARM
516 printf("dram[%d]: address=0x%08lx, size=0x%08lx\n",
517 bootconfig.dramblocks,
518 bootparam_p->u.mem.start,
519 bootparam_p->u.mem.size);
520 #endif
521 bootconfig.dram[bootconfig.dramblocks].address =
522 bootparam_p->u.mem.start;
523 bootconfig.dram[bootconfig.dramblocks].pages =
524 bootparam_p->u.mem.size / PAGE_SIZE;
525 bootconfig.dramblocks++;
526 }
527 break;
528 case BOOTPARAM_TAG_CMDLINE:
529 #ifdef VERBOSE_INIT_ARM
530 printf("cmdline: %s\n", bootparam_p->u.cmdline.cmdline);
531 #endif
532 parse_mi_bootargs(bootparam_p->u.cmdline.cmdline);
533 break;
534 }
535 bootparam_p = bootparam_tag_next(bootparam_p);
536 }
537
538 /*
539 * Heads up ... Setup the CPU / MMU / TLB functions
540 */
541 if (set_cpufuncs())
542 panic("cpu not recognized!");
543
544 #ifdef VERBOSE_INIT_ARM
545 printf("initarm: Configuring system ...\n");
546 #endif
547 /*
548 * Set up the variables that define the availablilty of
549 * physical memory. For now, we're going to set
550 * physical_freestart to 0xc0200000 (where the kernel
551 * was loaded), and allocate the memory we need downwards.
552 * If we get too close to the L1 table that we set up, we
553 * will panic. We will update physical_freestart and
554 * physical_freeend later to reflect what pmap_bootstrap()
555 * wants to see.
556 *
557 * XXX pmap_bootstrap() needs an enema.
558 */
559 physical_start = bootconfig.dram[0].address;
560 physical_end = bootconfig.dram[0].address
561 + (bootconfig.dram[0].pages * PAGE_SIZE);
562
563 physical_freestart = 0xc0018000UL;
564 physical_freeend = 0xc0200000UL;
565
566 physmem = (physical_end - physical_start) / PAGE_SIZE;
567
568 #ifdef VERBOSE_INIT_ARM
569 /* Tell the user about the memory */
570 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
571 physical_start, physical_end - 1);
572 #endif
573
574 /*
575 * Okay, the kernel starts 2MB in from the bottom of physical
576 * memory. We are going to allocate our bootstrap pages downwards
577 * from there.
578 *
579 * We need to allocate some fixed page tables to get the kernel
580 * going. We allocate one page directory and a number of page
581 * tables and store the physical addresses in the kernel_pt_table
582 * array.
583 *
584 * The kernel page directory must be on a 16K boundary. The page
585 * tables must be on 4K bounaries. What we do is allocate the
586 * page directory on the first 16K boundary that we encounter, and
587 * the page tables on 4K boundaries otherwise. Since we allocate
588 * at least 3 L2 page tables, we are guaranteed to encounter at
589 * least one 16K aligned region.
590 */
591
592 #ifdef VERBOSE_INIT_ARM
593 printf("Allocating page tables\n");
594 #endif
595
596 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
597
598 #ifdef VERBOSE_INIT_ARM
599 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
600 physical_freestart, free_pages, free_pages);
601 #endif
602
603 /* Define a macro to simplify memory allocation */
604 #define valloc_pages(var, np) \
605 alloc_pages((var).pv_pa, (np)); \
606 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
607
608 #define alloc_pages(var, np) \
609 physical_freeend -= ((np) * PAGE_SIZE); \
610 if (physical_freeend < physical_freestart) \
611 panic("initarm: out of memory"); \
612 (var) = physical_freeend; \
613 free_pages -= (np); \
614 memset((char *)(var), 0, ((np) * PAGE_SIZE));
615
616 loop1 = 0;
617 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
618 /* Are we 16KB aligned for an L1 ? */
619 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
620 && kernel_l1pt.pv_pa == 0) {
621 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
622 } else {
623 valloc_pages(kernel_pt_table[loop1],
624 L2_TABLE_SIZE / PAGE_SIZE);
625 ++loop1;
626 }
627 }
628
629 /* This should never be able to happen but better confirm that. */
630 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
631 panic("initarm: Failed to align the kernel page directory");
632
633 /*
634 * Allocate a page for the system vectors page
635 */
636 alloc_pages(systempage.pv_pa, 1);
637
638 /* Allocate stacks for all modes */
639 valloc_pages(irqstack, IRQ_STACK_SIZE);
640 valloc_pages(abtstack, ABT_STACK_SIZE);
641 valloc_pages(undstack, UND_STACK_SIZE);
642 valloc_pages(kernelstack, UPAGES);
643
644 #ifdef VERBOSE_INIT_ARM
645 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
646 irqstack.pv_va);
647 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
648 abtstack.pv_va);
649 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
650 undstack.pv_va);
651 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
652 kernelstack.pv_va);
653 #endif
654
655 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
656
657 /*
658 * Ok we have allocated physical pages for the primary kernel
659 * page tables. Save physical_freeend for when we give whats left
660 * of memory below 2Mbyte to UVM.
661 */
662
663 physical_freeend_low = physical_freeend;
664
665 #ifdef VERBOSE_INIT_ARM
666 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
667 #endif
668
669 /*
670 * Now we start construction of the L1 page table
671 * We start by mapping the L2 page tables into the L1.
672 * This means that we can replace L1 mappings later on if necessary
673 */
674 l1pagetable = kernel_l1pt.pv_pa;
675
676 /* Map the L2 pages tables in the L1 page table */
677 pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1),
678 &kernel_pt_table[KERNEL_PT_SYS]);
679 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
680 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
681 &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
682 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
683 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
684 &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
685
686 /* update the top of the kernel VM */
687 pmap_curmaxkvaddr =
688 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
689
690 #ifdef VERBOSE_INIT_ARM
691 printf("Mapping kernel\n");
692 #endif
693
694 /* Now we fill in the L2 pagetable for the kernel static code/data */
695 {
696 extern char etext[], _end[];
697 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
698 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
699 u_int logical;
700
701 textsize = (textsize + PGOFSET) & ~PGOFSET;
702 totalsize = (totalsize + PGOFSET) & ~PGOFSET;
703
704 logical = 0x00200000; /* offset of kernel in RAM */
705 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
706 physical_start + logical, textsize,
707 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
708 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
709 physical_start + logical, totalsize - textsize,
710 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
711 }
712
713 #ifdef VERBOSE_INIT_ARM
714 printf("Constructing L2 page tables\n");
715 #endif
716
717 /* Map the stack pages */
718 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
719 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
720 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
721 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
722 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
723 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
724 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
725 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
726
727 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
728 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
729
730 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
731 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
732 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
733 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
734 }
735
736 /* Map the vector page. */
737 pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
738 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
739
740 /* Map the statically mapped devices. */
741 pmap_devmap_bootstrap(l1pagetable, armadillo9_devmap);
742
743 /*
744 * Update the physical_freestart/physical_freeend/free_pages
745 * variables.
746 */
747 {
748 extern char _end[];
749
750 physical_freestart = physical_start +
751 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) -
752 KERNEL_BASE);
753 physical_freeend = physical_end;
754 free_pages =
755 (physical_freeend - physical_freestart) / PAGE_SIZE;
756 }
757
758 /*
759 * Now we have the real page tables in place so we can switch to them.
760 * Once this is done we will be running with the REAL kernel page
761 * tables.
762 */
763
764 /* Switch tables */
765 #ifdef VERBOSE_INIT_ARM
766 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
767 physical_freestart, free_pages, free_pages);
768 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
769 #endif
770 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
771 setttb(kernel_l1pt.pv_pa);
772 cpu_tlb_flushID();
773 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
774
775 /*
776 * Moved from cpu_startup() as data_abort_handler() references
777 * this during uvm init
778 */
779 proc0paddr = (struct user *)kernelstack.pv_va;
780 lwp0.l_addr = proc0paddr;
781
782 #ifdef VERBOSE_INIT_ARM
783 printf("done!\n");
784 #endif
785
786 #ifdef VERBOSE_INIT_ARM
787 printf("bootstrap done.\n");
788 #endif
789
790 arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
791
792 /*
793 * Pages were allocated during the secondary bootstrap for the
794 * stacks for different CPU modes.
795 * We must now set the r13 registers in the different CPU modes to
796 * point to these stacks.
797 * Since the ARM stacks use STMFD etc. we must set r13 to the top end
798 * of the stack memory.
799 */
800 #ifdef VERBOSE_INIT_ARM
801 printf("init subsystems: stacks ");
802 #endif
803
804 set_stackptr(PSR_IRQ32_MODE,
805 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
806 set_stackptr(PSR_ABT32_MODE,
807 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
808 set_stackptr(PSR_UND32_MODE,
809 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
810
811 /*
812 * Well we should set a data abort handler.
813 * Once things get going this will change as we will need a proper
814 * handler.
815 * Until then we will use a handler that just panics but tells us
816 * why.
817 * Initialisation of the vectors will just panic on a data abort.
818 * This just fills in a slightly better one.
819 */
820 #ifdef VERBOSE_INIT_ARM
821 printf("vectors ");
822 #endif
823 data_abort_handler_address = (u_int)data_abort_handler;
824 prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
825 undefined_handler_address = (u_int)undefinedinstruction_bounce;
826
827 /* Initialise the undefined instruction handlers */
828 #ifdef VERBOSE_INIT_ARM
829 printf("undefined ");
830 #endif
831 undefined_init();
832
833 /* Load memory into UVM. */
834 #ifdef VERBOSE_INIT_ARM
835 printf("page ");
836 #endif
837 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
838 uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
839 atop(physical_freestart), atop(physical_freeend),
840 VM_FREELIST_DEFAULT);
841 uvm_page_physload(atop(0xc0000000), atop(physical_freeend_low),
842 atop(0xc0000000), atop(physical_freeend_low),
843 VM_FREELIST_DEFAULT);
844 physmem = bootconfig.dram[0].pages;
845 for (loop = 1; loop < bootconfig.dramblocks; ++loop) {
846 size_t start = bootconfig.dram[loop].address;
847 size_t size = bootconfig.dram[loop].pages * PAGE_SIZE;
848 uvm_page_physload(atop(start), atop(start + size),
849 atop(start), atop(start + size),
850 VM_FREELIST_DEFAULT);
851 physmem += bootconfig.dram[loop].pages;
852 }
853
854 /* Boot strap pmap telling it where the kernel page table is */
855 #ifdef VERBOSE_INIT_ARM
856 printf("pmap ");
857 #endif
858 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
859
860 /* Setup the IRQ system */
861 #ifdef VERBOSE_INIT_ARM
862 printf("irq ");
863 #endif
864 ep93xx_intr_init();
865 #if NISA > 0
866 isa_intr_init();
867
868 #ifdef VERBOSE_INIT_ARM
869 printf("isa ");
870 #endif
871 isa_armadillo9_init(ARMADILLO9_IO16_VBASE + ARMADILLO9_ISAIO,
872 ARMADILLO9_IO16_VBASE + ARMADILLO9_ISAMEM);
873 #endif
874
875 #ifdef VERBOSE_INIT_ARM
876 printf("done.\n");
877 #endif
878
879 #ifdef BOOTHOWTO
880 boothowto = BOOTHOWTO;
881 #endif
882
883 #ifdef DDB
884 db_machine_init();
885 if (boothowto & RB_KDB)
886 Debugger();
887 #endif
888
889 /* We have our own device_register() */
890 evbarm_device_register = armadillo9_device_register;
891
892 /* We return the new stack pointer address */
893 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
894 }
895
896 void
897 consinit(void)
898 {
899 static int consinit_called;
900 #if NEPCOM > 0
901 bus_space_handle_t ioh;
902 #endif
903
904 if (consinit_called != 0)
905 return;
906
907 consinit_called = 1;
908
909 /*
910 * Console devices are already mapped in VA. Our devmap reflects
911 * this, so register it now so drivers can map the console
912 * device.
913 */
914 pmap_devmap_register(armadillo9_devmap);
915
916 #if NEPCOM > 0
917 bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + comaddr[CONUNIT],
918 EP93XX_APB_UART_SIZE, 0, &ioh);
919 if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + comaddr[CONUNIT],
920 ioh, comcnspeed, comcnmode))
921 {
922 panic("can't init serial console");
923 }
924 #else
925 panic("serial console not configured");
926 #endif
927 #if KGDB
928 #if NEPCOM > 0
929 if (strcmp(kgdb_devname, "epcom") == 0) {
930 com_kgdb_attach(&ep93xx_bs_tag, kgdb_devaddr, kgdb_devrate,
931 kgdb_devmode);
932 }
933 #endif /* NEPCOM > 0 */
934 #endif /* KGDB */
935 }
936
937
938 bus_dma_tag_t
939 ep93xx_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template)
940 {
941 int i;
942 struct arm32_bus_dma_tag *dmat;
943
944 for (i = 0; i < bootconfig.dramblocks; i++) {
945 armadillo9_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address;
946 armadillo9_dma_ranges[i].dr_busbase = bootconfig.dram[i].address;
947 armadillo9_dma_ranges[i].dr_len = bootconfig.dram[i].pages *
948 PAGE_SIZE;
949 }
950
951 dmat = dma_tag_template;
952
953 dmat->_ranges = armadillo9_dma_ranges;
954 dmat->_nranges = bootconfig.dramblocks;
955
956 return dmat;
957 }
958