Annotation of src/sys/arch/evbarm/tsarm/tsarm_machdep.c, Revision 1.3.4.1
1.3.4.1 ! rpaulo 1: /* $NetBSD: tsarm_machdep.c,v 1.4 2006/05/17 04:22:46 mrg 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: *
72: * Machine dependant functions for kernel setup for Iyonix.
73: */
74:
75: #include <sys/cdefs.h>
1.3.4.1 ! rpaulo 76: __KERNEL_RCSID(0, "$NetBSD: tsarm_machdep.c,v 1.4 2006/05/17 04:22:46 mrg 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>
102: #include <machine/bus.h>
103: #include <machine/cpu.h>
104: #include <machine/frame.h>
105: #include <arm/undefined.h>
106:
107: #include <arm/arm32/machdep.h>
108:
109: #include <arm/ep93xx/ep93xxreg.h>
110: #include <arm/ep93xx/ep93xxvar.h>
111:
112: #include <dev/ic/comreg.h>
113: #include <dev/ic/comvar.h>
114:
115: #include "epcom.h"
116: #if NEPCOM > 0
117: #include <arm/ep93xx/epcomvar.h>
118: #endif
119:
120: #include "isa.h"
121: #if NISA > 0
122: #include <dev/isa/isareg.h>
123: #include <dev/isa/isavar.h>
124: #endif
125:
126: #include <machine/isa_machdep.h>
127:
128: #include <evbarm/tsarm/tsarmreg.h>
129:
130: #include "opt_ipkdb.h"
131: #include "ksyms.h"
132:
133: /* Kernel text starts 2MB in from the bottom of the kernel address space. */
134: #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000)
135: #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
136:
137: /*
138: * The range 0xc1000000 - 0xccffffff is available for kernel VM space
139: * Core-logic registers and I/O mappings occupy 0xf0000000 - 0xffffffff
140: */
141: #define KERNEL_VM_SIZE 0x0C000000
142:
143: /*
144: * Address to call from cpu_reset() to reset the machine.
145: * This is machine architecture dependant as it varies depending
146: * on where the ROM appears when you turn the MMU off.
147: */
148:
149: u_int cpu_reset_address = 0x00000000;
150:
151: /* Define various stack sizes in pages */
152: #define IRQ_STACK_SIZE 8
153: #define ABT_STACK_SIZE 8
154: #ifdef IPKDB
155: #define UND_STACK_SIZE 16
156: #else
157: #define UND_STACK_SIZE 8
158: #endif
159:
160: struct bootconfig bootconfig; /* Boot config storage */
161: char *boot_args = NULL;
162: char *boot_file = NULL;
163:
164: vm_offset_t physical_start;
165: vm_offset_t physical_freestart;
166: vm_offset_t physical_freeend;
167: vm_offset_t physical_freeend_low;
168: vm_offset_t physical_end;
169: u_int free_pages;
170: int physmem = 0;
171:
172: /* Physical and virtual addresses for some global pages */
173: pv_addr_t systempage;
174: pv_addr_t irqstack;
175: pv_addr_t undstack;
176: pv_addr_t abtstack;
177: pv_addr_t kernelstack;
178:
179: vm_offset_t msgbufphys;
180:
181: static struct arm32_dma_range tsarm_dma_ranges[4];
182:
183: #if NISA > 0
184: extern void isa_tsarm_init(u_int, u_int);
185: #endif
186:
187: extern u_int data_abort_handler_address;
188: extern u_int prefetch_abort_handler_address;
189: extern u_int undefined_handler_address;
190:
191: #ifdef PMAP_DEBUG
192: extern int pmap_debug_level;
193: #endif
194:
195: #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */
196:
197: #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
198: #define KERNEL_PT_KERNEL_NUM 4
199: /* L2 tables for mapping kernel VM */
200: #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
201:
202: #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
203: #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
204:
205: pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
206:
207: struct user *proc0paddr;
208:
209: /* Prototypes */
210:
211: void consinit(void);
212: /*
213: * Define the default console speed for the machine.
214: */
215: #ifndef CONSPEED
216: #define CONSPEED B115200
217: #endif /* ! CONSPEED */
218:
219: #ifndef CONMODE
220: #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
221: #endif
222:
223: int comcnspeed = CONSPEED;
224: int comcnmode = CONMODE;
225:
226: #if KGDB
227: #ifndef KGDB_DEVNAME
228: #error Must define KGDB_DEVNAME
229: #endif
230: const char kgdb_devname[] = KGDB_DEVNAME;
231:
232: #ifndef KGDB_DEVADDR
233: #error Must define KGDB_DEVADDR
234: #endif
235: unsigned long kgdb_devaddr = KGDB_DEVADDR;
236:
237: #ifndef KGDB_DEVRATE
238: #define KGDB_DEVRATE CONSPEED
239: #endif
240: int kgdb_devrate = KGDB_DEVRATE;
241:
242: #ifndef KGDB_DEVMODE
243: #define KGDB_DEVMODE CONMODE
244: #endif
245: int kgdb_devmode = KGDB_DEVMODE;
246: #endif /* KGDB */
247:
248: /*
249: * void cpu_reboot(int howto, char *bootstr)
250: *
251: * Reboots the system
252: *
253: * Deal with any syncing, unmounting, dumping and shutdown hooks,
254: * then reset the CPU.
255: */
256: void
257: cpu_reboot(int howto, char *bootstr)
258: {
259:
260: /*
261: * If we are still cold then hit the air brakes
262: * and crash to earth fast
263: */
264: if (cold) {
265: doshutdownhooks();
266: printf("\r\n");
267: printf("The operating system has halted.\r\n");
268: printf("Please press any key to reboot.\r\n");
269: cngetc();
270: printf("\r\nrebooting...\r\n");
271: goto reset;
272: }
273:
274: /* Disable console buffering */
275:
276: /*
277: * If RB_NOSYNC was not specified sync the discs.
278: * Note: Unless cold is set to 1 here, syslogd will die during the
279: * unmount. It looks like syslogd is getting woken up only to find
280: * that it cannot page part of the binary in as the filesystem has
281: * been unmounted.
282: */
283: if (!(howto & RB_NOSYNC))
284: bootsync();
285:
286: /* Say NO to interrupts */
287: splhigh();
288:
289: /* Do a dump if requested. */
290: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
291: dumpsys();
292:
293: /* Run any shutdown hooks */
294: doshutdownhooks();
295:
296: /* Make sure IRQ's are disabled */
297: IRQdisable;
298:
299: if (howto & RB_HALT) {
300: printf("\r\n");
301: printf("The operating system has halted.\r\n");
302: printf("Please press any key to reboot.\r\n");
303: cngetc();
304: }
305:
306: printf("\r\nrebooting...\r\n");
307: reset:
308: /*
309: * Make really really sure that all interrupts are disabled,
310: * and poke the Internal Bus and Peripheral Bus reset lines.
311: */
312: (void) disable_interrupts(I32_bit|F32_bit);
313:
314: {
315: u_int32_t feed, ctrl;
316:
317: feed = TS7XXX_IO16_VBASE + TS7XXX_WDOGFEED;
318: ctrl = TS7XXX_IO16_VBASE + TS7XXX_WDOGCTRL;
319:
1.3 perry 320: __asm volatile (
1.1 joff 321: "mov r0, #0x5\n"
322: "mov r1, #0x1\n"
323: "strh r0, [%0]\n"
324: "strh r1, [%1]\n"
325: :
326: : "r" (feed), "r" (ctrl)
327: : "r0", "r1"
328: );
329: }
330:
331: for (;;);
332: }
333:
334: /* Static device mappings. */
335: static const struct pmap_devmap tsarm_devmap[] = {
336: {
337: EP93XX_AHB_VBASE,
338: EP93XX_AHB_HWBASE,
339: EP93XX_AHB_SIZE,
340: VM_PROT_READ|VM_PROT_WRITE,
341: PTE_NOCACHE,
342: },
343:
344: {
345: EP93XX_APB_VBASE,
346: EP93XX_APB_HWBASE,
347: EP93XX_APB_SIZE,
348: VM_PROT_READ|VM_PROT_WRITE,
349: PTE_NOCACHE,
350: },
351:
352: /*
353: * IO8 and IO16 space *must* be mapped contiguously with
354: * IO8_VA == IO16_VA - 64 Mbytes. ISA busmap driver depends
355: * on that!
356: */
357: {
358: TS7XXX_IO8_VBASE,
359: TS7XXX_IO8_HWBASE,
360: TS7XXX_IO8_SIZE,
361: VM_PROT_READ|VM_PROT_WRITE,
362: PTE_NOCACHE,
363: },
364:
365: {
366: TS7XXX_IO16_VBASE,
367: TS7XXX_IO16_HWBASE,
368: TS7XXX_IO16_SIZE,
369: VM_PROT_READ|VM_PROT_WRITE,
370: PTE_NOCACHE,
371: },
372:
373: {
374: 0,
375: 0,
376: 0,
377: 0,
378: 0,
379: }
380: };
381:
382: /*
383: * u_int initarm(...)
384: *
385: * Initial entry point on startup. This gets called before main() is
386: * entered.
387: * It should be responsible for setting up everything that must be
388: * in place when main is called.
389: * This includes
390: * Taking a copy of the boot configuration structure.
391: * Initialising the physical console so characters can be printed.
392: * Setting up page tables for the kernel
393: * Initialising interrupt controllers to a sane default state
394: */
395: u_int
396: initarm(void *arg)
397: {
398: #ifdef FIXME
399: struct bootconfig *passed_bootconfig = arg;
400: extern char _end[];
401: #endif
402: int loop;
403: int loop1;
404: u_int l1pagetable;
405: pv_addr_t kernel_l1pt;
406: paddr_t memstart;
407: psize_t memsize;
408:
409: #ifdef FIXME
410: /* Calibrate the delay loop. */
411: i80321_calibrate_delay();
412: #endif
413:
414: /*
415: * Since we map the on-board devices VA==PA, and the kernel
416: * is running VA==PA, it's possible for us to initialize
417: * the console now.
418: */
419: consinit();
420:
421: #ifdef VERBOSE_INIT_ARM
422: /* Talk to the user */
423: printf("\nNetBSD/tsarm booting ...\n");
424: #endif
425:
426: /*
427: * Heads up ... Setup the CPU / MMU / TLB functions
428: */
429: if (set_cpufuncs())
430: panic("cpu not recognized!");
431:
432: /*
433: * We are currently running with the MMU enabled
434: */
435:
436: #ifdef FIXME
437: /*
438: * Fetch the SDRAM start/size from the i80321 SDRAM configuration
439: * registers.
440: */
441: i80321_sdram_bounds(&obio_bs_tag, VERDE_PMMR_BASE + VERDE_MCU_BASE,
442: &memstart, &memsize);
443: #else
444: memstart = 0x0;
445: memsize = 0x2000000;
446: #endif
447:
448: #ifdef VERBOSE_INIT_ARM
449: printf("initarm: Configuring system ...\n");
450: #endif
451:
452: /* Fake bootconfig structure for the benefit of pmap.c */
453: /* XXX must make the memory description h/w independant */
454: bootconfig.dramblocks = 4;
455: bootconfig.dram[0].address = 0x0UL;
456: bootconfig.dram[0].pages = 0x800000UL / PAGE_SIZE;
457: bootconfig.dram[1].address = 0x1000000UL;
458: bootconfig.dram[1].pages = 0x800000UL / PAGE_SIZE;
459: bootconfig.dram[2].address = 0x4000000UL;
460: bootconfig.dram[2].pages = 0x800000UL / PAGE_SIZE;
461: bootconfig.dram[3].address = 0x5000000UL;
462: bootconfig.dram[3].pages = 0x800000UL / PAGE_SIZE;
463:
464: /*
465: * Set up the variables that define the availablilty of
466: * physical memory. For now, we're going to set
467: * physical_freestart to 0x00200000 (where the kernel
468: * was loaded), and allocate the memory we need downwards.
469: * If we get too close to the L1 table that we set up, we
470: * will panic. We will update physical_freestart and
471: * physical_freeend later to reflect what pmap_bootstrap()
472: * wants to see.
473: *
474: * XXX pmap_bootstrap() needs an enema.
475: */
476: physical_start = bootconfig.dram[0].address;
477: physical_end = bootconfig.dram[0].address +
478: (bootconfig.dram[0].pages * PAGE_SIZE);
479:
480: physical_freestart = 0x00009000UL;
481: physical_freeend = 0x00200000UL;
482:
483: physmem = (physical_end - physical_start) / PAGE_SIZE;
484:
485: #ifdef VERBOSE_INIT_ARM
486: /* Tell the user about the memory */
487: printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
488: physical_start, physical_end - 1);
489: #endif
490:
491: /*
492: * Okay, the kernel starts 2MB in from the bottom of physical
493: * memory. We are going to allocate our bootstrap pages downwards
494: * from there.
495: *
496: * We need to allocate some fixed page tables to get the kernel
497: * going. We allocate one page directory and a number of page
498: * tables and store the physical addresses in the kernel_pt_table
499: * array.
500: *
501: * The kernel page directory must be on a 16K boundary. The page
502: * tables must be on 4K bounaries. What we do is allocate the
503: * page directory on the first 16K boundary that we encounter, and
504: * the page tables on 4K boundaries otherwise. Since we allocate
505: * at least 3 L2 page tables, we are guaranteed to encounter at
506: * least one 16K aligned region.
507: */
508:
509: #ifdef VERBOSE_INIT_ARM
510: printf("Allocating page tables\n");
511: #endif
512:
513: free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
514:
515: #ifdef VERBOSE_INIT_ARM
516: printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
517: physical_freestart, free_pages, free_pages);
518: #endif
519:
520: /* Define a macro to simplify memory allocation */
521: #define valloc_pages(var, np) \
522: alloc_pages((var).pv_pa, (np)); \
523: (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
524:
525: #define alloc_pages(var, np) \
526: physical_freeend -= ((np) * PAGE_SIZE); \
527: if (physical_freeend < physical_freestart) \
528: panic("initarm: out of memory"); \
529: (var) = physical_freeend; \
530: free_pages -= (np); \
531: memset((char *)(var), 0, ((np) * PAGE_SIZE));
532:
533: loop1 = 0;
534: kernel_l1pt.pv_pa = 0;
1.3.4.1 ! rpaulo 535: kernel_l1pt.pv_va = 0;
1.1 joff 536: for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
537: /* Are we 16KB aligned for an L1 ? */
538: if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
539: && kernel_l1pt.pv_pa == 0) {
540: valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
541: } else {
542: valloc_pages(kernel_pt_table[loop1],
543: L2_TABLE_SIZE / PAGE_SIZE);
544: ++loop1;
545: }
546: }
547:
548: /* This should never be able to happen but better confirm that. */
549: if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
550: panic("initarm: Failed to align the kernel page directory");
551:
552: /*
553: * Allocate a page for the system vectors page
554: */
555: alloc_pages(systempage.pv_pa, 1);
556:
557: /* Allocate stacks for all modes */
558: valloc_pages(irqstack, IRQ_STACK_SIZE);
559: valloc_pages(abtstack, ABT_STACK_SIZE);
560: valloc_pages(undstack, UND_STACK_SIZE);
561: valloc_pages(kernelstack, UPAGES);
562:
563: #ifdef VERBOSE_INIT_ARM
564: printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
565: irqstack.pv_va);
566: printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
567: abtstack.pv_va);
568: printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
569: undstack.pv_va);
570: printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
571: kernelstack.pv_va);
572: #endif
573:
574: alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
575:
576: /*
577: * Ok we have allocated physical pages for the primary kernel
578: * page tables. Save physical_freeend for when we give whats left
579: * of memory below 2Mbyte to UVM.
580: */
581:
582: physical_freeend_low = physical_freeend;
583:
584: #ifdef VERBOSE_INIT_ARM
585: printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
586: #endif
587:
588: /*
589: * Now we start construction of the L1 page table
590: * We start by mapping the L2 page tables into the L1.
591: * This means that we can replace L1 mappings later on if necessary
592: */
593: l1pagetable = kernel_l1pt.pv_pa;
594:
595: /* Map the L2 pages tables in the L1 page table */
596: pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1),
597: &kernel_pt_table[KERNEL_PT_SYS]);
598: for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
599: pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
600: &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
601: for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
602: pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
603: &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
604:
605: /* update the top of the kernel VM */
606: pmap_curmaxkvaddr =
607: KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
608:
609: #ifdef VERBOSE_INIT_ARM
610: printf("Mapping kernel\n");
611: #endif
612:
613: /* Now we fill in the L2 pagetable for the kernel static code/data */
614: {
615: extern char etext[], _end[];
616: size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
617: size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
618: u_int logical;
619:
620: textsize = (textsize + PGOFSET) & ~PGOFSET;
621: totalsize = (totalsize + PGOFSET) & ~PGOFSET;
622:
623: logical = 0x00200000; /* offset of kernel in RAM */
624: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
625: physical_start + logical, textsize,
626: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
627: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
628: physical_start + logical, totalsize - textsize,
629: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
630: }
631:
632: #ifdef VERBOSE_INIT_ARM
633: printf("Constructing L2 page tables\n");
634: #endif
635:
636: /* Map the stack pages */
637: pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
638: IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
639: pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
640: ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
641: pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
642: UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
643: pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
644: UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
645:
646: pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
647: L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
648:
649: for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
650: pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
651: kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
652: VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
653: }
654:
655: /* Map the vector page. */
656: pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
657: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
658:
659: /* Map the statically mapped devices. */
660: pmap_devmap_bootstrap(l1pagetable, tsarm_devmap);
661:
662: /*
663: * Update the physical_freestart/physical_freeend/free_pages
664: * variables.
665: */
666: {
667: extern char _end[];
668:
669: physical_freestart = physical_start +
670: (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) -
671: KERNEL_BASE);
672: physical_freeend = physical_end;
673: free_pages =
674: (physical_freeend - physical_freestart) / PAGE_SIZE;
675: }
676:
677: /*
678: * Now we have the real page tables in place so we can switch to them.
679: * Once this is done we will be running with the REAL kernel page
680: * tables.
681: */
682:
683: /* Switch tables */
684: #ifdef VERBOSE_INIT_ARM
685: printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
686: physical_freestart, free_pages, free_pages);
687: printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
688: #endif
689: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
690: setttb(kernel_l1pt.pv_pa);
691: cpu_tlb_flushID();
692: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
693:
694: /*
695: * Moved from cpu_startup() as data_abort_handler() references
696: * this during uvm init
697: */
698: proc0paddr = (struct user *)kernelstack.pv_va;
699: lwp0.l_addr = proc0paddr;
700:
701: #ifdef VERBOSE_INIT_ARM
702: printf("done!\n");
703: #endif
704:
705: #ifdef VERBOSE_INIT_ARM
706: printf("bootstrap done.\n");
707: #endif
708:
709: arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
710:
711: /*
712: * Pages were allocated during the secondary bootstrap for the
713: * stacks for different CPU modes.
714: * We must now set the r13 registers in the different CPU modes to
715: * point to these stacks.
716: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
717: * of the stack memory.
718: */
719: #ifdef VERBOSE_INIT_ARM
720: printf("init subsystems: stacks ");
721: #endif
722:
723: set_stackptr(PSR_IRQ32_MODE,
724: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
725: set_stackptr(PSR_ABT32_MODE,
726: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
727: set_stackptr(PSR_UND32_MODE,
728: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
729:
730: /*
731: * Well we should set a data abort handler.
732: * Once things get going this will change as we will need a proper
733: * handler.
734: * Until then we will use a handler that just panics but tells us
735: * why.
736: * Initialisation of the vectors will just panic on a data abort.
737: * This just fills in a slightly better one.
738: */
739: #ifdef VERBOSE_INIT_ARM
740: printf("vectors ");
741: #endif
742: data_abort_handler_address = (u_int)data_abort_handler;
743: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
744: undefined_handler_address = (u_int)undefinedinstruction_bounce;
745:
746: /* Initialise the undefined instruction handlers */
747: #ifdef VERBOSE_INIT_ARM
748: printf("undefined ");
749: #endif
750: undefined_init();
751:
752: /* Load memory into UVM. */
753: #ifdef VERBOSE_INIT_ARM
754: printf("page ");
755: #endif
756: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
757: uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
758: atop(physical_freestart), atop(physical_freeend),
759: VM_FREELIST_DEFAULT);
760: uvm_page_physload(0, atop(physical_freeend_low),
761: 0, atop(physical_freeend_low),
762: VM_FREELIST_DEFAULT);
763: /*
764: * There is 32 Mb of memory on the TS-7200 in 4 8Mb chunks, so far
765: * we've only been working with the first one mapped at 0x0. Tell
766: * UVM about the others.
767: */
768: uvm_page_physload(atop(0x1000000), atop(0x1800000),
769: atop(0x1000000), atop(0x1800000),
770: VM_FREELIST_DEFAULT);
771: uvm_page_physload(atop(0x4000000), atop(0x4800000),
772: atop(0x4000000), atop(0x4800000),
773: VM_FREELIST_DEFAULT);
774: uvm_page_physload(atop(0x5000000), atop(0x5800000),
775: atop(0x5000000), atop(0x5800000),
776: VM_FREELIST_DEFAULT);
777:
778: physmem = 0x2000000 / PAGE_SIZE;
779:
780:
781: /* Boot strap pmap telling it where the kernel page table is */
782: #ifdef VERBOSE_INIT_ARM
783: printf("pmap ");
784: #endif
785: pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, KERNEL_VM_BASE,
786: KERNEL_VM_BASE + KERNEL_VM_SIZE);
787:
788: /* Setup the IRQ system */
789: #ifdef VERBOSE_INIT_ARM
790: printf("irq ");
791: #endif
792: ep93xx_intr_init();
793: #if NISA > 0
794: isa_intr_init();
795:
796: #ifdef VERBOSE_INIT_ARM
797: printf("isa ");
798: #endif
799: isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO,
800: TS7XXX_IO16_VBASE + TS7XXX_ISAMEM);
801: #endif
802:
803: #ifdef VERBOSE_INIT_ARM
804: printf("done.\n");
805: #endif
806:
807: #ifdef BOOTHOWTO
808: boothowto = BOOTHOWTO;
809: #endif
810:
811: #ifdef IPKDB
812: /* Initialise ipkdb */
813: ipkdb_init();
814: if (boothowto & RB_KDB)
815: ipkdb_connect(0);
816: #endif
817:
818: #if NKSYMS || defined(DDB) || defined(LKM)
819: /* Firmware doesn't load symbols. */
820: ksyms_init(0, NULL, NULL);
821: #endif
822:
823: #ifdef DDB
824: db_machine_init();
825: if (boothowto & RB_KDB)
826: Debugger();
827: #endif
828:
829: /* We return the new stack pointer address */
830: return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
831: }
832:
833: void
834: consinit(void)
835: {
836: static int consinit_called;
837: bus_space_handle_t ioh;
838:
839: if (consinit_called != 0)
840: return;
841:
842: consinit_called = 1;
843:
844: /*
845: * Console devices are already mapped in VA. Our devmap reflects
846: * this, so register it now so drivers can map the console
847: * device.
848: */
849: pmap_devmap_register(tsarm_devmap);
850: #if 0
851: isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO,
852: TS7XXX_IO16_VBASE + TS7XXX_ISAMEM);
853:
854: if (comcnattach(&isa_io_bs_tag, 0x3e8, comcnspeed,
855: COM_FREQ, COM_TYPE_NORMAL, comcnmode))
856: {
857: panic("can't init serial console");
858: }
859: #endif
860:
861: #if NEPCOM > 0
862: bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1,
863: EP93XX_APB_UART_SIZE, 0, &ioh);
864: if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1,
865: ioh, comcnspeed, comcnmode))
866: {
867: panic("can't init serial console");
868: }
869: #else
870: panic("serial console not configured");
871: #endif
872: #if KGDB
873: #if NEPCOM > 0
874: if (strcmp(kgdb_devname, "epcom") == 0) {
875: com_kgdb_attach(&ep93xx_bs_tag, kgdb_devaddr, kgdb_devrate,
876: kgdb_devmode);
877: }
878: #endif /* NEPCOM > 0 */
879: #endif /* KGDB */
880: }
881:
882:
883: bus_dma_tag_t
884: ep93xx_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template)
885: {
886: int i;
887: struct arm32_bus_dma_tag *dmat;
888:
889: for (i = 0; i < bootconfig.dramblocks; i++) {
890: tsarm_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address;
891: tsarm_dma_ranges[i].dr_busbase = bootconfig.dram[i].address;
892: tsarm_dma_ranges[i].dr_len = bootconfig.dram[i].pages *
893: PAGE_SIZE;
894: }
895:
896: dmat = dma_tag_template;
897:
898: dmat->_ranges = tsarm_dma_ranges;
899: dmat->_nranges = bootconfig.dramblocks;
900:
901: return dmat;
902: }
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