Annotation of src/sys/arch/evbarm/tsarm/tsarm_machdep.c, Revision 1.18.2.1
1.18.2.1! tls 1: /* $NetBSD: tsarm_machdep.c,v 1.20 2012/11/12 18:00:40 skrll Exp $ */
1.1 joff 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: *
1.15 wiz 72: * Machine dependent functions for kernel setup for Iyonix.
1.1 joff 73: */
74:
75: #include <sys/cdefs.h>
1.18.2.1! tls 76: __KERNEL_RCSID(0, "$NetBSD: tsarm_machdep.c,v 1.20 2012/11/12 18:00:40 skrll Exp $");
1.1 joff 77:
78: #include "opt_ddb.h"
79: #include "opt_kgdb.h"
80: #include "opt_pmap_debug.h"
81:
82: #include <sys/param.h>
83: #include <sys/device.h>
84: #include <sys/systm.h>
85: #include <sys/kernel.h>
86: #include <sys/exec.h>
87: #include <sys/proc.h>
88: #include <sys/msgbuf.h>
89: #include <sys/reboot.h>
90: #include <sys/termios.h>
91: #include <sys/ksyms.h>
92:
93: #include <uvm/uvm_extern.h>
94:
95: #include <dev/cons.h>
96:
97: #include <machine/db_machdep.h>
98: #include <ddb/db_sym.h>
99: #include <ddb/db_extern.h>
100:
101: #include <acorn32/include/bootconfig.h>
1.16 dyoung 102: #include <sys/bus.h>
1.1 joff 103: #include <machine/cpu.h>
104: #include <machine/frame.h>
105: #include <arm/undefined.h>
106:
1.18 matt 107: /* Define various stack sizes in pages */
108: #define IRQ_STACK_SIZE 8
109: #define ABT_STACK_SIZE 8
110: #define UND_STACK_SIZE 8
111:
1.1 joff 112: #include <arm/arm32/machdep.h>
113:
114: #include <arm/ep93xx/ep93xxreg.h>
115: #include <arm/ep93xx/ep93xxvar.h>
116:
117: #include <dev/ic/comreg.h>
118: #include <dev/ic/comvar.h>
119:
120: #include "epcom.h"
121: #if NEPCOM > 0
122: #include <arm/ep93xx/epcomvar.h>
123: #endif
124:
125: #include "isa.h"
126: #if NISA > 0
127: #include <dev/isa/isareg.h>
128: #include <dev/isa/isavar.h>
129: #endif
130:
131: #include <machine/isa_machdep.h>
132:
133: #include <evbarm/tsarm/tsarmreg.h>
134:
135: #include "ksyms.h"
136:
137: /* Kernel text starts 2MB in from the bottom of the kernel address space. */
138: #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000)
139: #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
140:
141: /*
142: * The range 0xc1000000 - 0xccffffff is available for kernel VM space
143: * Core-logic registers and I/O mappings occupy 0xf0000000 - 0xffffffff
144: */
145: #define KERNEL_VM_SIZE 0x0C000000
146:
147: struct bootconfig bootconfig; /* Boot config storage */
148: char *boot_args = NULL;
149: char *boot_file = NULL;
150:
151: vm_offset_t physical_start;
152: vm_offset_t physical_freestart;
153: vm_offset_t physical_freeend;
154: vm_offset_t physical_freeend_low;
155: vm_offset_t physical_end;
156: u_int free_pages;
157:
158: vm_offset_t msgbufphys;
159:
160: static struct arm32_dma_range tsarm_dma_ranges[4];
161:
162: #if NISA > 0
163: extern void isa_tsarm_init(u_int, u_int);
164: #endif
165:
166: #ifdef PMAP_DEBUG
167: extern int pmap_debug_level;
168: #endif
169:
170: #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */
171:
172: #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
173: #define KERNEL_PT_KERNEL_NUM 4
174: /* L2 tables for mapping kernel VM */
175: #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
176:
177: #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
178: #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
179:
180: pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
181:
182: /* Prototypes */
183:
184: void consinit(void);
185: /*
186: * Define the default console speed for the machine.
187: */
188: #ifndef CONSPEED
189: #define CONSPEED B115200
190: #endif /* ! CONSPEED */
191:
192: #ifndef CONMODE
193: #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
194: #endif
195:
196: int comcnspeed = CONSPEED;
197: int comcnmode = CONMODE;
198:
199: #if KGDB
200: #ifndef KGDB_DEVNAME
201: #error Must define KGDB_DEVNAME
202: #endif
203: const char kgdb_devname[] = KGDB_DEVNAME;
204:
205: #ifndef KGDB_DEVADDR
206: #error Must define KGDB_DEVADDR
207: #endif
208: unsigned long kgdb_devaddr = KGDB_DEVADDR;
209:
210: #ifndef KGDB_DEVRATE
211: #define KGDB_DEVRATE CONSPEED
212: #endif
213: int kgdb_devrate = KGDB_DEVRATE;
214:
215: #ifndef KGDB_DEVMODE
216: #define KGDB_DEVMODE CONMODE
217: #endif
218: int kgdb_devmode = KGDB_DEVMODE;
219: #endif /* KGDB */
220:
221: /*
222: * void cpu_reboot(int howto, char *bootstr)
223: *
224: * Reboots the system
225: *
226: * Deal with any syncing, unmounting, dumping and shutdown hooks,
227: * then reset the CPU.
228: */
229: void
230: cpu_reboot(int howto, char *bootstr)
231: {
232:
233: /*
234: * If we are still cold then hit the air brakes
235: * and crash to earth fast
236: */
237: if (cold) {
238: doshutdownhooks();
1.8 dyoung 239: pmf_system_shutdown(boothowto);
1.1 joff 240: printf("\r\n");
241: printf("The operating system has halted.\r\n");
242: printf("Please press any key to reboot.\r\n");
243: cngetc();
244: printf("\r\nrebooting...\r\n");
245: goto reset;
246: }
247:
248: /* Disable console buffering */
249:
250: /*
251: * If RB_NOSYNC was not specified sync the discs.
252: * Note: Unless cold is set to 1 here, syslogd will die during the
253: * unmount. It looks like syslogd is getting woken up only to find
254: * that it cannot page part of the binary in as the filesystem has
255: * been unmounted.
256: */
257: if (!(howto & RB_NOSYNC))
258: bootsync();
259:
260: /* Say NO to interrupts */
261: splhigh();
262:
263: /* Do a dump if requested. */
264: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
265: dumpsys();
266:
267: /* Run any shutdown hooks */
268: doshutdownhooks();
269:
1.8 dyoung 270: pmf_system_shutdown(boothowto);
271:
1.1 joff 272: /* Make sure IRQ's are disabled */
273: IRQdisable;
274:
275: if (howto & RB_HALT) {
276: printf("\r\n");
277: printf("The operating system has halted.\r\n");
278: printf("Please press any key to reboot.\r\n");
279: cngetc();
280: }
281:
282: printf("\r\nrebooting...\r\n");
283: reset:
284: /*
285: * Make really really sure that all interrupts are disabled,
286: * and poke the Internal Bus and Peripheral Bus reset lines.
287: */
288: (void) disable_interrupts(I32_bit|F32_bit);
289:
290: {
1.18.2.1! tls 291: uint32_t feed, ctrl;
1.1 joff 292:
293: feed = TS7XXX_IO16_VBASE + TS7XXX_WDOGFEED;
294: ctrl = TS7XXX_IO16_VBASE + TS7XXX_WDOGCTRL;
295:
1.3 perry 296: __asm volatile (
1.1 joff 297: "mov r0, #0x5\n"
298: "mov r1, #0x1\n"
299: "strh r0, [%0]\n"
300: "strh r1, [%1]\n"
301: :
302: : "r" (feed), "r" (ctrl)
303: : "r0", "r1"
304: );
305: }
306:
307: for (;;);
308: }
309:
310: /* Static device mappings. */
311: static const struct pmap_devmap tsarm_devmap[] = {
312: {
313: EP93XX_AHB_VBASE,
314: EP93XX_AHB_HWBASE,
315: EP93XX_AHB_SIZE,
316: VM_PROT_READ|VM_PROT_WRITE,
317: PTE_NOCACHE,
318: },
319:
320: {
321: EP93XX_APB_VBASE,
322: EP93XX_APB_HWBASE,
323: EP93XX_APB_SIZE,
324: VM_PROT_READ|VM_PROT_WRITE,
325: PTE_NOCACHE,
326: },
327:
328: /*
329: * IO8 and IO16 space *must* be mapped contiguously with
330: * IO8_VA == IO16_VA - 64 Mbytes. ISA busmap driver depends
331: * on that!
332: */
333: {
334: TS7XXX_IO8_VBASE,
335: TS7XXX_IO8_HWBASE,
336: TS7XXX_IO8_SIZE,
337: VM_PROT_READ|VM_PROT_WRITE,
338: PTE_NOCACHE,
339: },
340:
341: {
342: TS7XXX_IO16_VBASE,
343: TS7XXX_IO16_HWBASE,
344: TS7XXX_IO16_SIZE,
345: VM_PROT_READ|VM_PROT_WRITE,
346: PTE_NOCACHE,
347: },
348:
349: {
350: 0,
351: 0,
352: 0,
353: 0,
354: 0,
355: }
356: };
357:
358: /*
359: * u_int initarm(...)
360: *
361: * Initial entry point on startup. This gets called before main() is
362: * entered.
363: * It should be responsible for setting up everything that must be
364: * in place when main is called.
365: * This includes
366: * Taking a copy of the boot configuration structure.
367: * Initialising the physical console so characters can be printed.
368: * Setting up page tables for the kernel
369: * Initialising interrupt controllers to a sane default state
370: */
371: u_int
372: initarm(void *arg)
373: {
374: #ifdef FIXME
375: struct bootconfig *passed_bootconfig = arg;
376: extern char _end[];
377: #endif
378: int loop;
379: int loop1;
380: u_int l1pagetable;
381: paddr_t memstart;
382: psize_t memsize;
383:
384: #ifdef FIXME
385: /* Calibrate the delay loop. */
386: i80321_calibrate_delay();
387: #endif
388:
389: /*
390: * Since we map the on-board devices VA==PA, and the kernel
391: * is running VA==PA, it's possible for us to initialize
392: * the console now.
393: */
394: consinit();
395:
396: #ifdef VERBOSE_INIT_ARM
397: /* Talk to the user */
398: printf("\nNetBSD/tsarm booting ...\n");
399: #endif
400:
401: /*
402: * Heads up ... Setup the CPU / MMU / TLB functions
403: */
404: if (set_cpufuncs())
405: panic("cpu not recognized!");
406:
407: /*
408: * We are currently running with the MMU enabled
409: */
410:
411: #ifdef FIXME
412: /*
413: * Fetch the SDRAM start/size from the i80321 SDRAM configuration
414: * registers.
415: */
416: i80321_sdram_bounds(&obio_bs_tag, VERDE_PMMR_BASE + VERDE_MCU_BASE,
417: &memstart, &memsize);
418: #else
419: memstart = 0x0;
420: memsize = 0x2000000;
421: #endif
422:
423: #ifdef VERBOSE_INIT_ARM
424: printf("initarm: Configuring system ...\n");
425: #endif
426:
427: /* Fake bootconfig structure for the benefit of pmap.c */
1.5 wiz 428: /* XXX must make the memory description h/w independent */
1.1 joff 429: bootconfig.dramblocks = 4;
430: bootconfig.dram[0].address = 0x0UL;
431: bootconfig.dram[0].pages = 0x800000UL / PAGE_SIZE;
432: bootconfig.dram[1].address = 0x1000000UL;
433: bootconfig.dram[1].pages = 0x800000UL / PAGE_SIZE;
434: bootconfig.dram[2].address = 0x4000000UL;
435: bootconfig.dram[2].pages = 0x800000UL / PAGE_SIZE;
436: bootconfig.dram[3].address = 0x5000000UL;
437: bootconfig.dram[3].pages = 0x800000UL / PAGE_SIZE;
438:
439: /*
440: * Set up the variables that define the availablilty of
441: * physical memory. For now, we're going to set
442: * physical_freestart to 0x00200000 (where the kernel
443: * was loaded), and allocate the memory we need downwards.
444: * If we get too close to the L1 table that we set up, we
445: * will panic. We will update physical_freestart and
446: * physical_freeend later to reflect what pmap_bootstrap()
447: * wants to see.
448: *
449: * XXX pmap_bootstrap() needs an enema.
450: */
451: physical_start = bootconfig.dram[0].address;
452: physical_end = bootconfig.dram[0].address +
453: (bootconfig.dram[0].pages * PAGE_SIZE);
454:
455: physical_freestart = 0x00009000UL;
456: physical_freeend = 0x00200000UL;
457:
458: physmem = (physical_end - physical_start) / PAGE_SIZE;
459:
460: #ifdef VERBOSE_INIT_ARM
461: /* Tell the user about the memory */
462: printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
463: physical_start, physical_end - 1);
464: #endif
465:
466: /*
467: * Okay, the kernel starts 2MB in from the bottom of physical
468: * memory. We are going to allocate our bootstrap pages downwards
469: * from there.
470: *
471: * We need to allocate some fixed page tables to get the kernel
472: * going. We allocate one page directory and a number of page
473: * tables and store the physical addresses in the kernel_pt_table
474: * array.
475: *
476: * The kernel page directory must be on a 16K boundary. The page
477: * tables must be on 4K bounaries. What we do is allocate the
478: * page directory on the first 16K boundary that we encounter, and
479: * the page tables on 4K boundaries otherwise. Since we allocate
480: * at least 3 L2 page tables, we are guaranteed to encounter at
481: * least one 16K aligned region.
482: */
483:
484: #ifdef VERBOSE_INIT_ARM
485: printf("Allocating page tables\n");
486: #endif
487:
488: free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
489:
490: #ifdef VERBOSE_INIT_ARM
491: printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
492: physical_freestart, free_pages, free_pages);
493: #endif
494:
495: /* Define a macro to simplify memory allocation */
496: #define valloc_pages(var, np) \
497: alloc_pages((var).pv_pa, (np)); \
498: (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
499:
500: #define alloc_pages(var, np) \
501: physical_freeend -= ((np) * PAGE_SIZE); \
502: if (physical_freeend < physical_freestart) \
503: panic("initarm: out of memory"); \
504: (var) = physical_freeend; \
505: free_pages -= (np); \
506: memset((char *)(var), 0, ((np) * PAGE_SIZE));
507:
508: loop1 = 0;
509: for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
510: /* Are we 16KB aligned for an L1 ? */
511: if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
512: && kernel_l1pt.pv_pa == 0) {
513: valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
514: } else {
515: valloc_pages(kernel_pt_table[loop1],
516: L2_TABLE_SIZE / PAGE_SIZE);
517: ++loop1;
518: }
519: }
520:
521: /* This should never be able to happen but better confirm that. */
522: if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
523: panic("initarm: Failed to align the kernel page directory");
524:
525: /*
526: * Allocate a page for the system vectors page
527: */
528: alloc_pages(systempage.pv_pa, 1);
529:
530: /* Allocate stacks for all modes */
531: valloc_pages(irqstack, IRQ_STACK_SIZE);
532: valloc_pages(abtstack, ABT_STACK_SIZE);
533: valloc_pages(undstack, UND_STACK_SIZE);
534: valloc_pages(kernelstack, UPAGES);
535:
536: #ifdef VERBOSE_INIT_ARM
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. Save physical_freeend for when we give whats left
552: * of memory below 2Mbyte to UVM.
553: */
554:
555: physical_freeend_low = physical_freeend;
556:
557: #ifdef VERBOSE_INIT_ARM
558: printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
559: #endif
560:
561: /*
562: * Now we start construction of the L1 page table
563: * We start by mapping the L2 page tables into the L1.
564: * This means that we can replace L1 mappings later on if necessary
565: */
566: l1pagetable = kernel_l1pt.pv_pa;
567:
568: /* Map the L2 pages tables in the L1 page table */
569: pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1),
570: &kernel_pt_table[KERNEL_PT_SYS]);
571: for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
572: pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
573: &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
574: for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
575: pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
576: &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
577:
578: /* update the top of the kernel VM */
579: pmap_curmaxkvaddr =
580: KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
581:
582: #ifdef VERBOSE_INIT_ARM
583: printf("Mapping kernel\n");
584: #endif
585:
586: /* Now we fill in the L2 pagetable for the kernel static code/data */
587: {
588: extern char etext[], _end[];
589: size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
590: size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
591: u_int logical;
592:
593: textsize = (textsize + PGOFSET) & ~PGOFSET;
594: totalsize = (totalsize + PGOFSET) & ~PGOFSET;
595:
596: logical = 0x00200000; /* offset of kernel in RAM */
597: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
598: physical_start + logical, textsize,
599: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
600: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
601: physical_start + logical, totalsize - textsize,
602: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
603: }
604:
605: #ifdef VERBOSE_INIT_ARM
606: printf("Constructing L2 page tables\n");
607: #endif
608:
609: /* Map the stack pages */
610: pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
611: IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
612: pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
613: ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
614: pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
615: UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
616: pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
617: UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
618:
619: pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
620: L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
621:
622: for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
623: pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
624: kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
625: VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
626: }
627:
628: /* Map the vector page. */
629: pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
630: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
631:
632: /* Map the statically mapped devices. */
633: pmap_devmap_bootstrap(l1pagetable, tsarm_devmap);
634:
635: /*
636: * Update the physical_freestart/physical_freeend/free_pages
637: * variables.
638: */
639: {
640: extern char _end[];
641:
642: physical_freestart = physical_start +
643: (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) -
644: KERNEL_BASE);
645: physical_freeend = physical_end;
646: free_pages =
647: (physical_freeend - physical_freestart) / PAGE_SIZE;
648: }
649:
650: /*
651: * Now we have the real page tables in place so we can switch to them.
652: * Once this is done we will be running with the REAL kernel page
653: * tables.
654: */
655:
656: /* Switch tables */
657: #ifdef VERBOSE_INIT_ARM
658: printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
659: physical_freestart, free_pages, free_pages);
660: printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
661: #endif
662: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
1.18.2.1! tls 663: cpu_setttb(kernel_l1pt.pv_pa, true);
1.1 joff 664: cpu_tlb_flushID();
665: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
666:
667: /*
668: * Moved from cpu_startup() as data_abort_handler() references
669: * this during uvm init
670: */
1.13 rmind 671: uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
1.1 joff 672:
673: #ifdef VERBOSE_INIT_ARM
674: printf("done!\n");
675: #endif
676:
677: #ifdef VERBOSE_INIT_ARM
678: printf("bootstrap done.\n");
679: #endif
680:
681: arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
682:
683: /*
684: * Pages were allocated during the secondary bootstrap for the
685: * stacks for different CPU modes.
686: * We must now set the r13 registers in the different CPU modes to
687: * point to these stacks.
688: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
689: * of the stack memory.
690: */
691: #ifdef VERBOSE_INIT_ARM
692: printf("init subsystems: stacks ");
693: #endif
694:
695: set_stackptr(PSR_IRQ32_MODE,
696: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
697: set_stackptr(PSR_ABT32_MODE,
698: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
699: set_stackptr(PSR_UND32_MODE,
700: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
701:
702: /*
703: * Well we should set a data abort handler.
704: * Once things get going this will change as we will need a proper
705: * handler.
706: * Until then we will use a handler that just panics but tells us
707: * why.
708: * Initialisation of the vectors will just panic on a data abort.
709: * This just fills in a slightly better one.
710: */
711: #ifdef VERBOSE_INIT_ARM
712: printf("vectors ");
713: #endif
714: data_abort_handler_address = (u_int)data_abort_handler;
715: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
716: undefined_handler_address = (u_int)undefinedinstruction_bounce;
717:
718: /* Initialise the undefined instruction handlers */
719: #ifdef VERBOSE_INIT_ARM
720: printf("undefined ");
721: #endif
722: undefined_init();
723:
724: /* Load memory into UVM. */
725: #ifdef VERBOSE_INIT_ARM
726: printf("page ");
727: #endif
728: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
729: uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
730: atop(physical_freestart), atop(physical_freeend),
731: VM_FREELIST_DEFAULT);
732: uvm_page_physload(0, atop(physical_freeend_low),
733: 0, atop(physical_freeend_low),
734: VM_FREELIST_DEFAULT);
735: /*
736: * There is 32 Mb of memory on the TS-7200 in 4 8Mb chunks, so far
737: * we've only been working with the first one mapped at 0x0. Tell
738: * UVM about the others.
739: */
740: uvm_page_physload(atop(0x1000000), atop(0x1800000),
741: atop(0x1000000), atop(0x1800000),
742: VM_FREELIST_DEFAULT);
743: uvm_page_physload(atop(0x4000000), atop(0x4800000),
744: atop(0x4000000), atop(0x4800000),
745: VM_FREELIST_DEFAULT);
746: uvm_page_physload(atop(0x5000000), atop(0x5800000),
747: atop(0x5000000), atop(0x5800000),
748: VM_FREELIST_DEFAULT);
749:
750: physmem = 0x2000000 / PAGE_SIZE;
751:
752:
753: /* Boot strap pmap telling it where the kernel page table is */
754: #ifdef VERBOSE_INIT_ARM
755: printf("pmap ");
756: #endif
1.7 matt 757: pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
1.1 joff 758:
759: /* Setup the IRQ system */
760: #ifdef VERBOSE_INIT_ARM
761: printf("irq ");
762: #endif
763: ep93xx_intr_init();
764: #if NISA > 0
765: isa_intr_init();
766:
767: #ifdef VERBOSE_INIT_ARM
768: printf("isa ");
769: #endif
770: isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO,
771: TS7XXX_IO16_VBASE + TS7XXX_ISAMEM);
772: #endif
773:
774: #ifdef VERBOSE_INIT_ARM
775: printf("done.\n");
776: #endif
777:
778: #ifdef BOOTHOWTO
779: boothowto = BOOTHOWTO;
780: #endif
781:
782: #ifdef DDB
783: db_machine_init();
784: if (boothowto & RB_KDB)
785: Debugger();
786: #endif
787:
788: /* We return the new stack pointer address */
789: return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
790: }
791:
792: void
793: consinit(void)
794: {
795: static int consinit_called;
796: bus_space_handle_t ioh;
797:
798: if (consinit_called != 0)
799: return;
800:
801: consinit_called = 1;
802:
803: /*
804: * Console devices are already mapped in VA. Our devmap reflects
805: * this, so register it now so drivers can map the console
806: * device.
807: */
808: pmap_devmap_register(tsarm_devmap);
809: #if 0
810: isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO,
811: TS7XXX_IO16_VBASE + TS7XXX_ISAMEM);
812:
813: if (comcnattach(&isa_io_bs_tag, 0x3e8, comcnspeed,
814: COM_FREQ, COM_TYPE_NORMAL, comcnmode))
815: {
816: panic("can't init serial console");
817: }
818: #endif
819:
820: #if NEPCOM > 0
821: bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1,
822: EP93XX_APB_UART_SIZE, 0, &ioh);
823: if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1,
824: ioh, comcnspeed, comcnmode))
825: {
826: panic("can't init serial console");
827: }
828: #else
829: panic("serial console not configured");
830: #endif
831: #if KGDB
832: #if NEPCOM > 0
833: if (strcmp(kgdb_devname, "epcom") == 0) {
834: com_kgdb_attach(&ep93xx_bs_tag, kgdb_devaddr, kgdb_devrate,
835: kgdb_devmode);
836: }
837: #endif /* NEPCOM > 0 */
838: #endif /* KGDB */
839: }
840:
841:
842: bus_dma_tag_t
843: ep93xx_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template)
844: {
845: int i;
846: struct arm32_bus_dma_tag *dmat;
847:
848: for (i = 0; i < bootconfig.dramblocks; i++) {
849: tsarm_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address;
850: tsarm_dma_ranges[i].dr_busbase = bootconfig.dram[i].address;
851: tsarm_dma_ranges[i].dr_len = bootconfig.dram[i].pages *
852: PAGE_SIZE;
853: }
854:
855: dmat = dma_tag_template;
856:
857: dmat->_ranges = tsarm_dma_ranges;
858: dmat->_nranges = bootconfig.dramblocks;
859:
860: return dmat;
861: }
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