Annotation of src/sys/arch/evbarm/integrator/integrator_machdep.c, Revision 1.60
1.60 ! ad 1: /* $NetBSD: integrator_machdep.c,v 1.59 2008/11/11 06:46:41 dyoung Exp $ */
1.1 rearnsha 2:
3: /*
1.23 rearnsha 4: * Copyright (c) 2001,2002 ARM Ltd
1.1 rearnsha 5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. The name of the company may not be used to endorse or promote
16: * products derived from this software without specific prior written
17: * permission.
18: *
1.23 rearnsha 19: * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARM LTD
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: */
31:
32: /*
1.1 rearnsha 33: * Copyright (c) 1997,1998 Mark Brinicombe.
34: * Copyright (c) 1997,1998 Causality Limited.
35: * All rights reserved.
36: *
37: * Redistribution and use in source and binary forms, with or without
38: * modification, are permitted provided that the following conditions
39: * are met:
40: * 1. Redistributions of source code must retain the above copyright
41: * notice, this list of conditions and the following disclaimer.
42: * 2. Redistributions in binary form must reproduce the above copyright
43: * notice, this list of conditions and the following disclaimer in the
44: * documentation and/or other materials provided with the distribution.
45: * 3. All advertising materials mentioning features or use of this software
46: * must display the following acknowledgement:
47: * This product includes software developed by Mark Brinicombe
48: * for the NetBSD Project.
49: * 4. The name of the company nor the name of the author may be used to
50: * endorse or promote products derived from this software without specific
51: * prior written permission.
52: *
53: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
54: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
55: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
57: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
58: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
59: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63: * SUCH DAMAGE.
64: *
65: * Machine dependant functions for kernel setup for integrator board
66: *
67: * Created : 24/11/97
68: */
1.43 lukem 69:
70: #include <sys/cdefs.h>
1.60 ! ad 71: __KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.59 2008/11/11 06:46:41 dyoung Exp $");
1.1 rearnsha 72:
73: #include "opt_ddb.h"
74: #include "opt_pmap_debug.h"
75:
76: #include <sys/param.h>
77: #include <sys/device.h>
78: #include <sys/systm.h>
79: #include <sys/kernel.h>
80: #include <sys/exec.h>
81: #include <sys/proc.h>
82: #include <sys/msgbuf.h>
83: #include <sys/reboot.h>
84: #include <sys/termios.h>
1.32 ragge 85: #include <sys/ksyms.h>
1.1 rearnsha 86:
1.31 thorpej 87: #include <uvm/uvm_extern.h>
88:
1.1 rearnsha 89: #include <dev/cons.h>
90:
91: #include <machine/db_machdep.h>
92: #include <ddb/db_sym.h>
93: #include <ddb/db_extern.h>
94:
95: #include <machine/bootconfig.h>
96: #include <machine/bus.h>
97: #include <machine/cpu.h>
98: #include <machine/frame.h>
99: #include <machine/intr.h>
1.6 thorpej 100: #include <arm/undefined.h>
1.1 rearnsha 101:
1.23 rearnsha 102: #include <arm/arm32/machdep.h>
103:
1.1 rearnsha 104: #include <evbarm/integrator/integrator_boot.h>
105:
106: #include "pci.h"
1.32 ragge 107: #include "ksyms.h"
1.1 rearnsha 108:
109: void ifpga_reset(void) __attribute__((noreturn));
1.36 thorpej 110:
111: /* Kernel text starts 2MB in from the bottom of the kernel address space. */
112: #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000)
1.39 thorpej 113: #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
1.40 thorpej 114:
115: /*
116: * The range 0xc1000000 - 0xccffffff is available for kernel VM space
117: * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
118: */
119: #define KERNEL_VM_SIZE 0x0C000000
1.36 thorpej 120:
1.1 rearnsha 121: /*
122: * Address to call from cpu_reset() to reset the machine.
123: * This is machine architecture dependant as it varies depending
124: * on where the ROM appears when you turn the MMU off.
125: */
126:
127: u_int cpu_reset_address = (u_int) ifpga_reset;
128:
129: /* Define various stack sizes in pages */
130: #define IRQ_STACK_SIZE 1
131: #define ABT_STACK_SIZE 1
132: #define UND_STACK_SIZE 1
133:
134: BootConfig bootconfig; /* Boot config storage */
135: char *boot_args = NULL;
136: char *boot_file = NULL;
137:
138: vm_offset_t physical_start;
139: vm_offset_t physical_end;
140: vm_offset_t pagetables_start;
141: int physmem = 0;
142:
143: /*int debug_flags;*/
144: #ifndef PMAP_STATIC_L1S
145: int max_processes = 64; /* Default number */
146: #endif /* !PMAP_STATIC_L1S */
147:
148: /* Physical and virtual addresses for some global pages */
149: pv_addr_t irqstack;
150: pv_addr_t undstack;
151: pv_addr_t abtstack;
152: pv_addr_t kernelstack;
153:
154: vm_offset_t msgbufphys;
155:
156: extern u_int data_abort_handler_address;
157: extern u_int prefetch_abort_handler_address;
158: extern u_int undefined_handler_address;
159:
160: #ifdef PMAP_DEBUG
161: extern int pmap_debug_level;
162: #endif
163:
1.23 rearnsha 164: #define KERNEL_PT_SYS 0 /* L2 table for mapping zero page */
165:
166: #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
167: #define KERNEL_PT_KERNEL_NUM 2
168: /* L2 tables for mapping kernel VM */
169: #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
1.17 chris 170: #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
1.1 rearnsha 171: #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
172:
1.14 thorpej 173: pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
1.1 rearnsha 174:
175: struct user *proc0paddr;
176:
177: /* Prototypes */
178:
1.23 rearnsha 179: static void integrator_sdram_bounds (paddr_t *, psize_t *);
1.1 rearnsha 180:
1.23 rearnsha 181: void consinit(void);
1.1 rearnsha 182:
183: /* A load of console goo. */
184: #include "vga.h"
1.23 rearnsha 185: #if NVGA > 0
1.1 rearnsha 186: #include <dev/ic/mc6845reg.h>
187: #include <dev/ic/pcdisplayvar.h>
188: #include <dev/ic/vgareg.h>
189: #include <dev/ic/vgavar.h>
190: #endif
191:
192: #include "pckbc.h"
1.23 rearnsha 193: #if NPCKBC > 0
1.1 rearnsha 194: #include <dev/ic/i8042reg.h>
195: #include <dev/ic/pckbcvar.h>
196: #endif
197:
198: #include "com.h"
1.23 rearnsha 199: #if NCOM > 0
1.1 rearnsha 200: #include <dev/ic/comreg.h>
201: #include <dev/ic/comvar.h>
202: #ifndef CONCOMADDR
203: #define CONCOMADDR 0x3f8
204: #endif
205: #endif
206:
1.23 rearnsha 207: /*
208: * Define the default console speed for the board. This is generally
209: * what the firmware provided with the board defaults to.
210: */
1.30 mycroft 211: #ifndef CONSPEED
1.1 rearnsha 212: #define CONSPEED B115200
213: #endif
214: #ifndef CONMODE
215: #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
216: #endif
217:
218: int comcnspeed = CONSPEED;
219: int comcnmode = CONMODE;
220:
221: #include "plcom.h"
222: #if (NPLCOM > 0)
223: #include <evbarm/dev/plcomreg.h>
224: #include <evbarm/dev/plcomvar.h>
225:
226: #include <evbarm/ifpga/ifpgamem.h>
227: #include <evbarm/ifpga/ifpgareg.h>
228: #include <evbarm/ifpga/ifpgavar.h>
229: #endif
230:
231: #ifndef CONSDEVNAME
232: #define CONSDEVNAME "plcom"
233: #endif
234:
235: #ifndef PLCONSPEED
236: #define PLCONSPEED B38400
237: #endif
238: #ifndef PLCONMODE
239: #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
240: #endif
241: #ifndef PLCOMCNUNIT
242: #define PLCOMCNUNIT -1
243: #endif
244:
245: int plcomcnspeed = PLCONSPEED;
246: int plcomcnmode = PLCONMODE;
247:
248: #if 0
249: extern struct consdev kcomcons;
250: static void kcomcnputc(dev_t, int);
251: #endif
252:
253: /*
254: * void cpu_reboot(int howto, char *bootstr)
255: *
256: * Reboots the system
257: *
258: * Deal with any syncing, unmounting, dumping and shutdown hooks,
259: * then reset the CPU.
260: */
261: void
1.23 rearnsha 262: cpu_reboot(int howto, char *bootstr)
1.1 rearnsha 263: {
264:
265: /*
266: * If we are still cold then hit the air brakes
267: * and crash to earth fast
268: */
269: if (cold) {
270: doshutdownhooks();
1.59 dyoung 271: pmf_system_shutdown(boothowto);
1.1 rearnsha 272: printf("The operating system has halted.\n");
273: printf("Please press any key to reboot.\n\n");
274: cngetc();
275: printf("rebooting...\n");
276: ifpga_reset();
277: /*NOTREACHED*/
278: }
279:
280: /* Disable console buffering */
281:
282: /*
283: * If RB_NOSYNC was not specified sync the discs.
1.23 rearnsha 284: * Note: Unless cold is set to 1 here, syslogd will die during the
285: * unmount. It looks like syslogd is getting woken up only to find
286: * that it cannot page part of the binary in as the filesystem has
287: * been unmounted.
1.1 rearnsha 288: */
289: if (!(howto & RB_NOSYNC))
290: bootsync();
291:
292: /* Say NO to interrupts */
293: splhigh();
294:
295: /* Do a dump if requested. */
296: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
297: dumpsys();
298:
299: /* Run any shutdown hooks */
300: doshutdownhooks();
301:
1.59 dyoung 302: pmf_system_shutdown(boothowto);
303:
1.1 rearnsha 304: /* Make sure IRQ's are disabled */
305: IRQdisable;
306:
307: if (howto & RB_HALT) {
308: printf("The operating system has halted.\n");
309: printf("Please press any key to reboot.\n\n");
310: cngetc();
311: }
312:
313: printf("rebooting...\n");
314: ifpga_reset();
315: /*NOTREACHED*/
316: }
317:
1.42 thorpej 318: /* Statically mapped devices. */
319: static const struct pmap_devmap integrator_devmap[] = {
1.1 rearnsha 320: #if NPLCOM > 0 && defined(PLCONSOLE)
1.23 rearnsha 321: {
322: UART0_BOOT_BASE,
323: IFPGA_IO_BASE + IFPGA_UART0,
324: 1024 * 1024,
325: VM_PROT_READ|VM_PROT_WRITE,
326: PTE_NOCACHE
327: },
328:
329: {
330: UART1_BOOT_BASE,
331: IFPGA_IO_BASE + IFPGA_UART1,
332: 1024 * 1024,
333: VM_PROT_READ|VM_PROT_WRITE,
334: PTE_NOCACHE
335: },
1.1 rearnsha 336: #endif
337: #if NPCI > 0
1.23 rearnsha 338: {
339: IFPGA_PCI_IO_VBASE,
340: IFPGA_PCI_IO_BASE,
341: IFPGA_PCI_IO_VSIZE,
342: VM_PROT_READ|VM_PROT_WRITE,
343: PTE_NOCACHE
344: },
345:
346: {
347: IFPGA_PCI_CONF_VBASE,
348: IFPGA_PCI_CONF_BASE,
349: IFPGA_PCI_CONF_VSIZE,
350: VM_PROT_READ|VM_PROT_WRITE,
1.42 thorpej 351: PTE_NOCACHE
352: },
1.1 rearnsha 353: #endif
354:
1.23 rearnsha 355: {
356: 0,
357: 0,
358: 0,
359: 0,
360: 0
361: }
1.1 rearnsha 362: };
363:
364: /*
1.23 rearnsha 365: * u_int initarm(...)
1.1 rearnsha 366: *
367: * Initial entry point on startup. This gets called before main() is
368: * entered.
369: * It should be responsible for setting up everything that must be
370: * in place when main is called.
371: * This includes
372: * Taking a copy of the boot configuration structure.
373: * Initialising the physical console so characters can be printed.
374: * Setting up page tables for the kernel
375: * Relocating the kernel to the bottom of physical memory
376: */
377:
378: u_int
1.23 rearnsha 379: initarm(void *arg)
1.1 rearnsha 380: {
381: int loop;
382: int loop1;
383: u_int l1pagetable;
1.55 perry 384: extern char etext __asm ("_etext");
385: extern char end __asm ("_end");
1.23 rearnsha 386: paddr_t memstart;
387: psize_t memsize;
1.47 rearnsha 388: vm_offset_t physical_freestart;
389: vm_offset_t physical_freeend;
1.1 rearnsha 390: #if NPLCOM > 0 && defined(PLCONSOLE)
391: static struct bus_space plcom_bus_space;
392: #endif
393:
394: /*
395: * Heads up ... Setup the CPU / MMU / TLB functions
396: */
397: if (set_cpufuncs())
1.50 wiz 398: panic("CPU not recognized!");
1.1 rearnsha 399:
400: #if NPLCOM > 0 && defined(PLCONSOLE)
401: /*
402: * Initialise the diagnostic serial console
403: * This allows a means of generating output during initarm().
404: * Once all the memory map changes are complete we can call consinit()
405: * and not have to worry about things moving.
406: */
407:
408: if (PLCOMCNUNIT == 0) {
409: ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd600000);
410: plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
411: IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
412: } else if (PLCOMCNUNIT == 1) {
413: ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd700000);
414: plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
415: IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
416: }
417: #endif
418:
1.38 thorpej 419: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 420: /* Talk to the user */
1.23 rearnsha 421: printf("\nNetBSD/evbarm (Integrator) booting ...\n");
1.38 thorpej 422: #endif
1.1 rearnsha 423:
424: /*
1.23 rearnsha 425: * Fetch the SDRAM start/size from the CM configuration registers.
1.1 rearnsha 426: */
1.23 rearnsha 427: integrator_sdram_bounds(&memstart, &memsize);
1.1 rearnsha 428:
1.38 thorpej 429: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 430: printf("initarm: Configuring system ...\n");
1.38 thorpej 431: #endif
1.1 rearnsha 432:
1.23 rearnsha 433: /* Fake bootconfig structure for the benefit of pmap.c */
434: /* XXX must make the memory description h/w independent */
435: bootconfig.dramblocks = 1;
436: bootconfig.dram[0].address = memstart;
1.31 thorpej 437: bootconfig.dram[0].pages = memsize / PAGE_SIZE;
1.47 rearnsha 438: bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA | BOOT_DRAM_PREFER;
1.23 rearnsha 439:
1.1 rearnsha 440: /*
441: * Set up the variables that define the availablilty of
1.23 rearnsha 442: * physical memory. For now, we're going to set
443: * physical_freestart to 0x00200000 (where the kernel
444: * was loaded), and allocate the memory we need downwards.
445: * If we get too close to the L1 table that we set up, we
446: * will panic. We will update physical_freestart and
447: * physical_freeend later to reflect what pmap_bootstrap()
448: * wants to see.
449: *
1.47 rearnsha 450: * We assume that the kernel is loaded into bank[0].
451: *
1.23 rearnsha 452: * XXX pmap_bootstrap() needs an enema.
1.1 rearnsha 453: */
1.23 rearnsha 454: physical_start = bootconfig.dram[0].address;
1.47 rearnsha 455: physical_end = 0;
1.1 rearnsha 456:
1.47 rearnsha 457: /* Update the address of the first free 16KB chunk of physical memory */
458: physical_freestart = ((uintptr_t) &end - KERNEL_BASE + PGOFSET)
459: & ~PGOFSET;
460: if (physical_freestart < bootconfig.dram[0].address)
461: physical_freestart = bootconfig.dram[0].address;
462: physical_freeend = bootconfig.dram[0].address +
463: bootconfig.dram[0].pages * PAGE_SIZE;
464:
465: for (loop = 0, physmem = 0; loop < bootconfig.dramblocks; loop++) {
466: paddr_t memoryblock_end;
467:
468: memoryblock_end = bootconfig.dram[loop].address +
469: bootconfig.dram[loop].pages * PAGE_SIZE;
470: if (memoryblock_end > physical_end)
471: physical_end = memoryblock_end;
472: if (bootconfig.dram[loop].address < physical_start)
473: physical_start = bootconfig.dram[loop].address;
474:
475: physmem += bootconfig.dram[loop].pages;
476: }
1.1 rearnsha 477:
1.38 thorpej 478: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 479: /* Tell the user about the memory */
480: printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
481: physical_start, physical_end - 1);
1.38 thorpej 482: #endif
1.1 rearnsha 483:
484: /*
1.23 rearnsha 485: * Okay, the kernel starts 2MB in from the bottom of physical
486: * memory. We are going to allocate our bootstrap pages downwards
487: * from there.
1.1 rearnsha 488: *
1.23 rearnsha 489: * We need to allocate some fixed page tables to get the kernel
490: * going. We allocate one page directory and a number of page
491: * tables and store the physical addresses in the kernel_pt_table
492: * array.
493: *
494: * The kernel page directory must be on a 16K boundary. The page
1.53 abs 495: * tables must be on 4K boundaries. What we do is allocate the
1.23 rearnsha 496: * page directory on the first 16K boundary that we encounter, and
497: * the page tables on 4K boundaries otherwise. Since we allocate
498: * at least 3 L2 page tables, we are guaranteed to encounter at
499: * least one 16K aligned region.
1.1 rearnsha 500: */
501:
502: #ifdef VERBOSE_INIT_ARM
503: printf("Allocating page tables\n");
504: #endif
505:
506: #ifdef VERBOSE_INIT_ARM
1.47 rearnsha 507: printf("freestart = 0x%08lx, free pages = %d (0x%08x)\n",
508: physical_freestart, physmem, physmem);
1.1 rearnsha 509: #endif
510:
511: /* Define a macro to simplify memory allocation */
1.23 rearnsha 512: #define valloc_pages(var, np) \
513: alloc_pages((var).pv_pa, (np)); \
1.47 rearnsha 514: (var).pv_va = KERNEL_BASE + (var).pv_pa;
1.23 rearnsha 515:
516: #define alloc_pages(var, np) \
1.47 rearnsha 517: (var) = physical_freestart; \
518: physical_freestart += ((np) * PAGE_SIZE); \
1.23 rearnsha 519: if (physical_freeend < physical_freestart) \
520: panic("initarm: out of memory"); \
1.31 thorpej 521: memset((char *)(var), 0, ((np) * PAGE_SIZE));
1.1 rearnsha 522:
523: loop1 = 0;
524: for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
525: /* Are we 16KB aligned for an L1 ? */
1.47 rearnsha 526: if ((physical_freestart & (L1_TABLE_SIZE - 1)) == 0
1.1 rearnsha 527: && kernel_l1pt.pv_pa == 0) {
1.31 thorpej 528: valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
1.1 rearnsha 529: } else {
1.33 thorpej 530: valloc_pages(kernel_pt_table[loop1],
531: L2_TABLE_SIZE / PAGE_SIZE);
1.23 rearnsha 532: ++loop1;
1.1 rearnsha 533: }
534: }
535:
536: /* This should never be able to happen but better confirm that. */
1.21 thorpej 537: if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
1.28 provos 538: panic("initarm: Failed to align the kernel page directory");
1.1 rearnsha 539:
540: /*
541: * Allocate a page for the system page mapped to V0x00000000
542: * This page will just contain the system vectors and can be
543: * shared by all processes.
544: */
545: alloc_pages(systempage.pv_pa, 1);
546:
547: /* Allocate stacks for all modes */
548: valloc_pages(irqstack, IRQ_STACK_SIZE);
549: valloc_pages(abtstack, ABT_STACK_SIZE);
550: valloc_pages(undstack, UND_STACK_SIZE);
551: valloc_pages(kernelstack, UPAGES);
552:
553: #ifdef VERBOSE_INIT_ARM
1.23 rearnsha 554: printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
555: irqstack.pv_va);
556: printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
557: abtstack.pv_va);
558: printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
559: undstack.pv_va);
560: printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
561: kernelstack.pv_va);
1.1 rearnsha 562: #endif
563:
1.31 thorpej 564: alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
1.1 rearnsha 565:
566: /*
567: * Ok we have allocated physical pages for the primary kernel
568: * page tables
569: */
570:
571: #ifdef VERBOSE_INIT_ARM
1.23 rearnsha 572: printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
1.1 rearnsha 573: #endif
574:
575: /*
1.23 rearnsha 576: * Now we start construction of the L1 page table
1.1 rearnsha 577: * We start by mapping the L2 page tables into the L1.
578: * This means that we can replace L1 mappings later on if necessary
579: */
580: l1pagetable = kernel_l1pt.pv_pa;
581:
582: /* Map the L2 pages tables in the L1 page table */
1.11 thorpej 583: pmap_link_l2pt(l1pagetable, 0x00000000,
1.14 thorpej 584: &kernel_pt_table[KERNEL_PT_SYS]);
1.23 rearnsha 585: for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
586: pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
587: &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
588: for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
1.11 thorpej 589: pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
1.14 thorpej 590: &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
1.17 chris 591:
592: /* update the top of the kernel VM */
1.19 thorpej 593: pmap_curmaxkvaddr =
594: KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
1.1 rearnsha 595:
596: #ifdef VERBOSE_INIT_ARM
597: printf("Mapping kernel\n");
598: #endif
599:
600: /* Now we fill in the L2 pagetable for the kernel static code/data */
601: {
602: size_t textsize = (uintptr_t) &etext - KERNEL_TEXT_BASE;
603: size_t totalsize = (uintptr_t) &end - KERNEL_TEXT_BASE;
1.23 rearnsha 604: u_int logical;
1.1 rearnsha 605:
1.23 rearnsha 606: textsize = (textsize + PGOFSET) & ~PGOFSET;
1.1 rearnsha 607: totalsize = (totalsize + PGOFSET) & ~PGOFSET;
1.23 rearnsha 608:
609: logical = 0x00200000; /* offset of kernel in RAM */
610:
611: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
1.47 rearnsha 612: logical, textsize, VM_PROT_READ | VM_PROT_WRITE,
613: PTE_CACHE);
1.23 rearnsha 614: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
1.47 rearnsha 615: logical, totalsize - textsize,
616: VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
1.1 rearnsha 617: }
618:
619: #ifdef VERBOSE_INIT_ARM
620: printf("Constructing L2 page tables\n");
621: #endif
622:
623: /* Map the stack pages */
1.14 thorpej 624: pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
1.31 thorpej 625: IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 626: pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
1.31 thorpej 627: ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 628: pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
1.31 thorpej 629: UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 630: pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
1.31 thorpej 631: UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.13 thorpej 632:
1.33 thorpej 633: pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
634: L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
1.1 rearnsha 635:
1.33 thorpej 636: for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
637: pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
1.44 rearnsha 638: kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
1.33 thorpej 639: VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
640: }
1.1 rearnsha 641:
1.20 thorpej 642: /* Map the vector page. */
1.1 rearnsha 643: #if 1
644: /* MULTI-ICE requires that page 0 is NC/NB so that it can download
645: the cache-clean code there. */
1.51 rearnsha 646: pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
1.10 thorpej 647: VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
1.1 rearnsha 648: #else
1.51 rearnsha 649: pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
1.20 thorpej 650: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.1 rearnsha 651: #endif
652:
1.42 thorpej 653: /* Map the statically mapped devices. */
654: pmap_devmap_bootstrap(l1pagetable, integrator_devmap);
1.1 rearnsha 655:
656: /*
657: * Now we have the real page tables in place so we can switch to them.
1.23 rearnsha 658: * Once this is done we will be running with the REAL kernel page
659: * tables.
660: */
661:
1.1 rearnsha 662: /* Switch tables */
663: #ifdef VERBOSE_INIT_ARM
664: printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
665: #endif
1.33 thorpej 666: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
1.1 rearnsha 667: setttb(kernel_l1pt.pv_pa);
1.23 rearnsha 668: cpu_tlb_flushID();
1.33 thorpej 669: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
670:
671: /*
672: * Moved from cpu_startup() as data_abort_handler() references
673: * this during uvm init
674: */
675: proc0paddr = (struct user *)kernelstack.pv_va;
676: lwp0.l_addr = proc0paddr;
1.1 rearnsha 677:
678: #ifdef PLCONSOLE
679: /*
680: * The IFPGA registers have just moved.
681: * Detach the diagnostic serial port and reattach at the new address.
682: */
683: plcomcndetach();
684: #endif
685:
686: /*
687: * XXX this should only be done in main() but it useful to
688: * have output earlier ...
689: */
690: consinit();
691:
692: #ifdef VERBOSE_INIT_ARM
693: printf("bootstrap done.\n");
694: #endif
695:
1.20 thorpej 696: arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
1.1 rearnsha 697:
698: /*
699: * Pages were allocated during the secondary bootstrap for the
700: * stacks for different CPU modes.
701: * We must now set the r13 registers in the different CPU modes to
702: * point to these stacks.
703: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
704: * of the stack memory.
705: */
1.38 thorpej 706: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 707: printf("init subsystems: stacks ");
1.38 thorpej 708: #endif
1.1 rearnsha 709:
1.31 thorpej 710: set_stackptr(PSR_IRQ32_MODE,
711: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
712: set_stackptr(PSR_ABT32_MODE,
713: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
714: set_stackptr(PSR_UND32_MODE,
715: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
1.1 rearnsha 716:
717: /*
718: * Well we should set a data abort handler.
1.23 rearnsha 719: * Once things get going this will change as we will need a proper
720: * handler.
1.1 rearnsha 721: * Until then we will use a handler that just panics but tells us
722: * why.
723: * Initialisation of the vectors will just panic on a data abort.
1.52 abs 724: * This just fills in a slightly better one.
1.1 rearnsha 725: */
1.38 thorpej 726: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 727: printf("vectors ");
1.38 thorpej 728: #endif
1.1 rearnsha 729: data_abort_handler_address = (u_int)data_abort_handler;
730: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
731: undefined_handler_address = (u_int)undefinedinstruction_bounce;
732:
733: /* Initialise the undefined instruction handlers */
1.38 thorpej 734: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 735: printf("undefined ");
1.38 thorpej 736: #endif
1.1 rearnsha 737: undefined_init();
738:
1.25 thorpej 739: /* Load memory into UVM. */
1.38 thorpej 740: #ifdef VERBOSE_INIT_ARM
1.25 thorpej 741: printf("page ");
1.38 thorpej 742: #endif
1.25 thorpej 743: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
1.47 rearnsha 744:
745: /* Round the start up and the end down to a page. */
746: physical_freestart = (physical_freestart + PGOFSET) & ~PGOFSET;
747: physical_freeend &= ~PGOFSET;
748:
749: for (loop = 0; loop < bootconfig.dramblocks; loop++) {
750: paddr_t block_start = (paddr_t) bootconfig.dram[loop].address;
751: paddr_t block_end = block_start +
752: (bootconfig.dram[loop].pages * PAGE_SIZE);
753:
754: if (loop == 0) {
755: block_start = physical_freestart;
756: block_end = physical_freeend;
757: }
758:
759:
760: uvm_page_physload(atop(block_start), atop(block_end),
761: atop(block_start), atop(block_end),
762: (bootconfig.dram[loop].flags & BOOT_DRAM_PREFER) ?
763: VM_FREELIST_DEFAULT : VM_FREELIST_DEFAULT + 1);
764: }
1.25 thorpej 765:
1.1 rearnsha 766: /* Boot strap pmap telling it where the kernel page table is */
1.38 thorpej 767: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 768: printf("pmap ");
1.38 thorpej 769: #endif
1.58 matt 770: pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
1.1 rearnsha 771:
772: /* Setup the IRQ system */
1.38 thorpej 773: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 774: printf("irq ");
1.38 thorpej 775: #endif
1.48 rearnsha 776: ifpga_intr_init();
1.1 rearnsha 777:
1.38 thorpej 778: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 779: printf("done.\n");
1.38 thorpej 780: #endif
1.1 rearnsha 781:
1.60 ! ad 782: #if NKSYMS || defined(DDB) || defined(MODULAR)
1.32 ragge 783: /* Firmware doesn't load symbols. */
784: ksyms_init(0, NULL, NULL);
785: #endif
786:
1.1 rearnsha 787: #ifdef DDB
788: db_machine_init();
789: if (boothowto & RB_KDB)
790: Debugger();
791: #endif
792:
793: /* We return the new stack pointer address */
794: return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
795: }
796:
797: void
798: consinit(void)
799: {
800: static int consinit_called = 0;
801: #if NPLCOM > 0 && defined(PLCONSOLE)
802: static struct bus_space plcom_bus_space;
803: #endif
804: #if 0
805: char *console = CONSDEVNAME;
806: #endif
807:
808: if (consinit_called != 0)
809: return;
810:
811: consinit_called = 1;
812:
813: #if NPLCOM > 0 && defined(PLCONSOLE)
814: if (PLCOMCNUNIT == 0) {
815: ifpga_create_io_bs_tag(&plcom_bus_space,
816: (void*)UART0_BOOT_BASE);
817: if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
818: IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
819: panic("can't init serial console");
820: return;
821: } else if (PLCOMCNUNIT == 1) {
822: ifpga_create_io_bs_tag(&plcom_bus_space,
823: (void*)UART0_BOOT_BASE);
824: if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
825: IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
826: panic("can't init serial console");
827: return;
828: }
829: #endif
830: #if (NCOM > 0)
831: if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed,
1.41 thorpej 832: COM_FREQ, COM_TYPE_NORMAL, comcnmode))
1.1 rearnsha 833: panic("can't init serial console @%x", CONCOMADDR);
834: return;
835: #endif
836: panic("No serial console configured");
1.23 rearnsha 837: }
838:
839: static void
840: integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize)
841: {
842: volatile unsigned long *cm_sdram
843: = (volatile unsigned long *)0x10000020;
1.46 rearnsha 844: volatile unsigned long *cm_stat
845: = (volatile unsigned long *)0x10000010;
1.23 rearnsha 846:
1.46 rearnsha 847: *memstart = *cm_stat & 0x00ff0000;
1.23 rearnsha 848:
1.46 rearnsha 849: /*
850: * Although the SSRAM overlaps the SDRAM, we can use the wrap-around
851: * to access the entire bank.
852: */
1.23 rearnsha 853: switch ((*cm_sdram >> 2) & 0x7)
854: {
855: case 0:
856: *memsize = 16 * 1024 * 1024;
857: break;
858: case 1:
859: *memsize = 32 * 1024 * 1024;
860: break;
861: case 2:
862: *memsize = 64 * 1024 * 1024;
863: break;
864: case 3:
865: *memsize = 128 * 1024 * 1024;
866: break;
867: case 4:
1.46 rearnsha 868: /* With 256M of memory there is no wrap-around. */
869: *memsize = 256 * 1024 * 1024 - *memstart;
1.23 rearnsha 870: break;
871: default:
872: printf("CM_SDRAM retuns unknown value, using 16M\n");
873: *memsize = 16 * 1024 * 1024;
874: break;
875: }
1.1 rearnsha 876: }
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