Annotation of src/sys/arch/evbarm/integrator/integrator_machdep.c, Revision 1.68.8.1
1.68.8.1! jdc 1: /* $NetBSD: integrator_machdep.c,v 1.68 2011/07/01 20:39:34 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: *
1.67 wiz 65: * Machine dependent functions for kernel setup for integrator board
1.1 rearnsha 66: *
67: * Created : 24/11/97
68: */
1.43 lukem 69:
70: #include <sys/cdefs.h>
1.68.8.1! jdc 71: __KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.68 2011/07/01 20:39:34 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>
1.68 dyoung 96: #include <sys/bus.h>
1.1 rearnsha 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.
1.67 wiz 123: * This is machine architecture dependent as it varies depending
1.1 rearnsha 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:
141: /*int debug_flags;*/
142: #ifndef PMAP_STATIC_L1S
143: int max_processes = 64; /* Default number */
144: #endif /* !PMAP_STATIC_L1S */
145:
146: /* Physical and virtual addresses for some global pages */
147: pv_addr_t irqstack;
148: pv_addr_t undstack;
149: pv_addr_t abtstack;
150: pv_addr_t kernelstack;
151:
152: vm_offset_t msgbufphys;
153:
154: extern u_int data_abort_handler_address;
155: extern u_int prefetch_abort_handler_address;
156: extern u_int undefined_handler_address;
157:
158: #ifdef PMAP_DEBUG
159: extern int pmap_debug_level;
160: #endif
161:
1.23 rearnsha 162: #define KERNEL_PT_SYS 0 /* L2 table for mapping zero page */
163:
164: #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
165: #define KERNEL_PT_KERNEL_NUM 2
166: /* L2 tables for mapping kernel VM */
167: #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
1.17 chris 168: #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */
1.1 rearnsha 169: #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
170:
1.14 thorpej 171: pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
1.1 rearnsha 172:
173: /* Prototypes */
174:
1.23 rearnsha 175: static void integrator_sdram_bounds (paddr_t *, psize_t *);
1.1 rearnsha 176:
1.23 rearnsha 177: void consinit(void);
1.1 rearnsha 178:
179: /* A load of console goo. */
180: #include "vga.h"
1.23 rearnsha 181: #if NVGA > 0
1.1 rearnsha 182: #include <dev/ic/mc6845reg.h>
183: #include <dev/ic/pcdisplayvar.h>
184: #include <dev/ic/vgareg.h>
185: #include <dev/ic/vgavar.h>
186: #endif
187:
188: #include "pckbc.h"
1.23 rearnsha 189: #if NPCKBC > 0
1.1 rearnsha 190: #include <dev/ic/i8042reg.h>
191: #include <dev/ic/pckbcvar.h>
192: #endif
193:
194: #include "com.h"
1.23 rearnsha 195: #if NCOM > 0
1.1 rearnsha 196: #include <dev/ic/comreg.h>
197: #include <dev/ic/comvar.h>
198: #ifndef CONCOMADDR
199: #define CONCOMADDR 0x3f8
200: #endif
201: #endif
202:
1.23 rearnsha 203: /*
204: * Define the default console speed for the board. This is generally
205: * what the firmware provided with the board defaults to.
206: */
1.30 mycroft 207: #ifndef CONSPEED
1.1 rearnsha 208: #define CONSPEED B115200
209: #endif
210: #ifndef CONMODE
211: #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
212: #endif
213:
214: int comcnspeed = CONSPEED;
215: int comcnmode = CONMODE;
216:
217: #include "plcom.h"
218: #if (NPLCOM > 0)
219: #include <evbarm/dev/plcomreg.h>
220: #include <evbarm/dev/plcomvar.h>
221:
222: #include <evbarm/ifpga/ifpgamem.h>
223: #include <evbarm/ifpga/ifpgareg.h>
224: #include <evbarm/ifpga/ifpgavar.h>
225: #endif
226:
227: #ifndef CONSDEVNAME
228: #define CONSDEVNAME "plcom"
229: #endif
230:
231: #ifndef PLCONSPEED
232: #define PLCONSPEED B38400
233: #endif
234: #ifndef PLCONMODE
235: #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
236: #endif
237: #ifndef PLCOMCNUNIT
238: #define PLCOMCNUNIT -1
239: #endif
240:
241: int plcomcnspeed = PLCONSPEED;
242: int plcomcnmode = PLCONMODE;
243:
244: #if 0
245: extern struct consdev kcomcons;
246: static void kcomcnputc(dev_t, int);
247: #endif
248:
249: /*
250: * void cpu_reboot(int howto, char *bootstr)
251: *
252: * Reboots the system
253: *
254: * Deal with any syncing, unmounting, dumping and shutdown hooks,
255: * then reset the CPU.
256: */
257: void
1.23 rearnsha 258: cpu_reboot(int howto, char *bootstr)
1.1 rearnsha 259: {
260:
261: /*
262: * If we are still cold then hit the air brakes
263: * and crash to earth fast
264: */
265: if (cold) {
266: doshutdownhooks();
1.59 dyoung 267: pmf_system_shutdown(boothowto);
1.1 rearnsha 268: printf("The operating system has halted.\n");
269: printf("Please press any key to reboot.\n\n");
270: cngetc();
271: printf("rebooting...\n");
272: ifpga_reset();
273: /*NOTREACHED*/
274: }
275:
276: /* Disable console buffering */
277:
278: /*
279: * If RB_NOSYNC was not specified sync the discs.
1.23 rearnsha 280: * Note: Unless cold is set to 1 here, syslogd will die during the
281: * unmount. It looks like syslogd is getting woken up only to find
282: * that it cannot page part of the binary in as the filesystem has
283: * been unmounted.
1.1 rearnsha 284: */
285: if (!(howto & RB_NOSYNC))
286: bootsync();
287:
288: /* Say NO to interrupts */
289: splhigh();
290:
291: /* Do a dump if requested. */
292: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
293: dumpsys();
294:
295: /* Run any shutdown hooks */
296: doshutdownhooks();
297:
1.59 dyoung 298: pmf_system_shutdown(boothowto);
299:
1.1 rearnsha 300: /* Make sure IRQ's are disabled */
301: IRQdisable;
302:
303: if (howto & RB_HALT) {
304: printf("The operating system has halted.\n");
305: printf("Please press any key to reboot.\n\n");
306: cngetc();
307: }
308:
309: printf("rebooting...\n");
310: ifpga_reset();
311: /*NOTREACHED*/
312: }
313:
1.42 thorpej 314: /* Statically mapped devices. */
315: static const struct pmap_devmap integrator_devmap[] = {
1.1 rearnsha 316: #if NPLCOM > 0 && defined(PLCONSOLE)
1.23 rearnsha 317: {
318: UART0_BOOT_BASE,
319: IFPGA_IO_BASE + IFPGA_UART0,
320: 1024 * 1024,
321: VM_PROT_READ|VM_PROT_WRITE,
322: PTE_NOCACHE
323: },
324:
325: {
326: UART1_BOOT_BASE,
327: IFPGA_IO_BASE + IFPGA_UART1,
328: 1024 * 1024,
329: VM_PROT_READ|VM_PROT_WRITE,
330: PTE_NOCACHE
331: },
1.1 rearnsha 332: #endif
333: #if NPCI > 0
1.23 rearnsha 334: {
335: IFPGA_PCI_IO_VBASE,
336: IFPGA_PCI_IO_BASE,
337: IFPGA_PCI_IO_VSIZE,
338: VM_PROT_READ|VM_PROT_WRITE,
339: PTE_NOCACHE
340: },
341:
342: {
343: IFPGA_PCI_CONF_VBASE,
344: IFPGA_PCI_CONF_BASE,
345: IFPGA_PCI_CONF_VSIZE,
346: VM_PROT_READ|VM_PROT_WRITE,
1.42 thorpej 347: PTE_NOCACHE
348: },
1.1 rearnsha 349: #endif
350:
1.23 rearnsha 351: {
352: 0,
353: 0,
354: 0,
355: 0,
356: 0
357: }
1.1 rearnsha 358: };
359:
360: /*
1.23 rearnsha 361: * u_int initarm(...)
1.1 rearnsha 362: *
363: * Initial entry point on startup. This gets called before main() is
364: * entered.
365: * It should be responsible for setting up everything that must be
366: * in place when main is called.
367: * This includes
368: * Taking a copy of the boot configuration structure.
369: * Initialising the physical console so characters can be printed.
370: * Setting up page tables for the kernel
371: * Relocating the kernel to the bottom of physical memory
372: */
373:
374: u_int
1.23 rearnsha 375: initarm(void *arg)
1.1 rearnsha 376: {
377: int loop;
378: int loop1;
379: u_int l1pagetable;
1.55 perry 380: extern char etext __asm ("_etext");
381: extern char end __asm ("_end");
1.23 rearnsha 382: paddr_t memstart;
383: psize_t memsize;
1.47 rearnsha 384: vm_offset_t physical_freestart;
385: vm_offset_t physical_freeend;
1.1 rearnsha 386:
387: /*
388: * Heads up ... Setup the CPU / MMU / TLB functions
389: */
390: if (set_cpufuncs())
1.50 wiz 391: panic("CPU not recognized!");
1.1 rearnsha 392:
393: #if NPLCOM > 0 && defined(PLCONSOLE)
394: /*
395: * Initialise the diagnostic serial console
396: * This allows a means of generating output during initarm().
397: * Once all the memory map changes are complete we can call consinit()
398: * and not have to worry about things moving.
399: */
400:
401: if (PLCOMCNUNIT == 0) {
1.68.8.1! jdc 402: static struct bus_space plcom_bus_space;
! 403: static struct plcom_instance ifpga_pi0 = {
! 404: .pi_type = PLCOM_TYPE_PL010,
! 405: .pi_iot = &plcom_bus_space,
! 406: .pi_size = IFPGA_UART_SIZE,
! 407: .pi_iobase = 0x0
! 408: };
! 409:
1.1 rearnsha 410: ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd600000);
1.68.8.1! jdc 411: plcomcnattach(&ifpga_pi0, plcomcnspeed, IFPGA_UART_CLK,
! 412: plcomcnmode, PLCOMCNUNIT);
1.1 rearnsha 413: } else if (PLCOMCNUNIT == 1) {
1.68.8.1! jdc 414: static struct bus_space plcom_bus_space;
! 415: static struct plcom_instance ifpga_pi1 = {
! 416: .pi_type = PLCOM_TYPE_PL010,
! 417: .pi_iot = &plcom_bus_space,
! 418: .pi_size = IFPGA_UART_SIZE,
! 419: .pi_iobase = 0x0
! 420: };
! 421:
1.1 rearnsha 422: ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd700000);
1.68.8.1! jdc 423: plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK,
! 424: plcomcnmode, PLCOMCNUNIT);
1.1 rearnsha 425: }
426: #endif
427:
1.38 thorpej 428: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 429: /* Talk to the user */
1.23 rearnsha 430: printf("\nNetBSD/evbarm (Integrator) booting ...\n");
1.38 thorpej 431: #endif
1.1 rearnsha 432:
433: /*
1.23 rearnsha 434: * Fetch the SDRAM start/size from the CM configuration registers.
1.1 rearnsha 435: */
1.23 rearnsha 436: integrator_sdram_bounds(&memstart, &memsize);
1.1 rearnsha 437:
1.38 thorpej 438: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 439: printf("initarm: Configuring system ...\n");
1.38 thorpej 440: #endif
1.1 rearnsha 441:
1.23 rearnsha 442: /* Fake bootconfig structure for the benefit of pmap.c */
443: /* XXX must make the memory description h/w independent */
444: bootconfig.dramblocks = 1;
445: bootconfig.dram[0].address = memstart;
1.31 thorpej 446: bootconfig.dram[0].pages = memsize / PAGE_SIZE;
1.47 rearnsha 447: bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA | BOOT_DRAM_PREFER;
1.23 rearnsha 448:
1.1 rearnsha 449: /*
450: * Set up the variables that define the availablilty of
1.23 rearnsha 451: * physical memory. For now, we're going to set
452: * physical_freestart to 0x00200000 (where the kernel
453: * was loaded), and allocate the memory we need downwards.
454: * If we get too close to the L1 table that we set up, we
455: * will panic. We will update physical_freestart and
456: * physical_freeend later to reflect what pmap_bootstrap()
457: * wants to see.
458: *
1.47 rearnsha 459: * We assume that the kernel is loaded into bank[0].
460: *
1.23 rearnsha 461: * XXX pmap_bootstrap() needs an enema.
1.1 rearnsha 462: */
1.23 rearnsha 463: physical_start = bootconfig.dram[0].address;
1.47 rearnsha 464: physical_end = 0;
1.1 rearnsha 465:
1.47 rearnsha 466: /* Update the address of the first free 16KB chunk of physical memory */
467: physical_freestart = ((uintptr_t) &end - KERNEL_BASE + PGOFSET)
468: & ~PGOFSET;
469: if (physical_freestart < bootconfig.dram[0].address)
470: physical_freestart = bootconfig.dram[0].address;
471: physical_freeend = bootconfig.dram[0].address +
472: bootconfig.dram[0].pages * PAGE_SIZE;
473:
474: for (loop = 0, physmem = 0; loop < bootconfig.dramblocks; loop++) {
475: paddr_t memoryblock_end;
476:
477: memoryblock_end = bootconfig.dram[loop].address +
478: bootconfig.dram[loop].pages * PAGE_SIZE;
479: if (memoryblock_end > physical_end)
480: physical_end = memoryblock_end;
481: if (bootconfig.dram[loop].address < physical_start)
482: physical_start = bootconfig.dram[loop].address;
483:
484: physmem += bootconfig.dram[loop].pages;
485: }
1.1 rearnsha 486:
1.38 thorpej 487: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 488: /* Tell the user about the memory */
489: printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
490: physical_start, physical_end - 1);
1.38 thorpej 491: #endif
1.1 rearnsha 492:
493: /*
1.23 rearnsha 494: * Okay, the kernel starts 2MB in from the bottom of physical
495: * memory. We are going to allocate our bootstrap pages downwards
496: * from there.
1.1 rearnsha 497: *
1.23 rearnsha 498: * We need to allocate some fixed page tables to get the kernel
499: * going. We allocate one page directory and a number of page
500: * tables and store the physical addresses in the kernel_pt_table
501: * array.
502: *
503: * The kernel page directory must be on a 16K boundary. The page
1.53 abs 504: * tables must be on 4K boundaries. What we do is allocate the
1.23 rearnsha 505: * page directory on the first 16K boundary that we encounter, and
506: * the page tables on 4K boundaries otherwise. Since we allocate
507: * at least 3 L2 page tables, we are guaranteed to encounter at
508: * least one 16K aligned region.
1.1 rearnsha 509: */
510:
511: #ifdef VERBOSE_INIT_ARM
512: printf("Allocating page tables\n");
513: #endif
514:
515: #ifdef VERBOSE_INIT_ARM
1.47 rearnsha 516: printf("freestart = 0x%08lx, free pages = %d (0x%08x)\n",
517: physical_freestart, physmem, physmem);
1.1 rearnsha 518: #endif
519:
520: /* Define a macro to simplify memory allocation */
1.23 rearnsha 521: #define valloc_pages(var, np) \
522: alloc_pages((var).pv_pa, (np)); \
1.47 rearnsha 523: (var).pv_va = KERNEL_BASE + (var).pv_pa;
1.23 rearnsha 524:
525: #define alloc_pages(var, np) \
1.47 rearnsha 526: (var) = physical_freestart; \
527: physical_freestart += ((np) * PAGE_SIZE); \
1.23 rearnsha 528: if (physical_freeend < physical_freestart) \
529: panic("initarm: out of memory"); \
1.31 thorpej 530: memset((char *)(var), 0, ((np) * PAGE_SIZE));
1.1 rearnsha 531:
532: loop1 = 0;
533: for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
534: /* Are we 16KB aligned for an L1 ? */
1.47 rearnsha 535: if ((physical_freestart & (L1_TABLE_SIZE - 1)) == 0
1.1 rearnsha 536: && kernel_l1pt.pv_pa == 0) {
1.31 thorpej 537: valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
1.1 rearnsha 538: } else {
1.33 thorpej 539: valloc_pages(kernel_pt_table[loop1],
540: L2_TABLE_SIZE / PAGE_SIZE);
1.23 rearnsha 541: ++loop1;
1.1 rearnsha 542: }
543: }
544:
545: /* This should never be able to happen but better confirm that. */
1.21 thorpej 546: if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
1.28 provos 547: panic("initarm: Failed to align the kernel page directory");
1.1 rearnsha 548:
549: /*
550: * Allocate a page for the system page mapped to V0x00000000
551: * This page will just contain the system vectors and can be
552: * shared by all processes.
553: */
554: alloc_pages(systempage.pv_pa, 1);
555:
556: /* Allocate stacks for all modes */
557: valloc_pages(irqstack, IRQ_STACK_SIZE);
558: valloc_pages(abtstack, ABT_STACK_SIZE);
559: valloc_pages(undstack, UND_STACK_SIZE);
560: valloc_pages(kernelstack, UPAGES);
561:
562: #ifdef VERBOSE_INIT_ARM
1.23 rearnsha 563: printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
564: irqstack.pv_va);
565: printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
566: abtstack.pv_va);
567: printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
568: undstack.pv_va);
569: printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
570: kernelstack.pv_va);
1.1 rearnsha 571: #endif
572:
1.31 thorpej 573: alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
1.1 rearnsha 574:
575: /*
576: * Ok we have allocated physical pages for the primary kernel
577: * page tables
578: */
579:
580: #ifdef VERBOSE_INIT_ARM
1.23 rearnsha 581: printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
1.1 rearnsha 582: #endif
583:
584: /*
1.23 rearnsha 585: * Now we start construction of the L1 page table
1.1 rearnsha 586: * We start by mapping the L2 page tables into the L1.
587: * This means that we can replace L1 mappings later on if necessary
588: */
589: l1pagetable = kernel_l1pt.pv_pa;
590:
591: /* Map the L2 pages tables in the L1 page table */
1.11 thorpej 592: pmap_link_l2pt(l1pagetable, 0x00000000,
1.14 thorpej 593: &kernel_pt_table[KERNEL_PT_SYS]);
1.23 rearnsha 594: for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
595: pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
596: &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
597: for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
1.11 thorpej 598: pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
1.14 thorpej 599: &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
1.17 chris 600:
601: /* update the top of the kernel VM */
1.19 thorpej 602: pmap_curmaxkvaddr =
603: KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
1.1 rearnsha 604:
605: #ifdef VERBOSE_INIT_ARM
606: printf("Mapping kernel\n");
607: #endif
608:
609: /* Now we fill in the L2 pagetable for the kernel static code/data */
610: {
611: size_t textsize = (uintptr_t) &etext - KERNEL_TEXT_BASE;
612: size_t totalsize = (uintptr_t) &end - KERNEL_TEXT_BASE;
1.23 rearnsha 613: u_int logical;
1.1 rearnsha 614:
1.23 rearnsha 615: textsize = (textsize + PGOFSET) & ~PGOFSET;
1.1 rearnsha 616: totalsize = (totalsize + PGOFSET) & ~PGOFSET;
1.23 rearnsha 617:
618: logical = 0x00200000; /* offset of kernel in RAM */
619:
620: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
1.47 rearnsha 621: logical, textsize, VM_PROT_READ | VM_PROT_WRITE,
622: PTE_CACHE);
1.23 rearnsha 623: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
1.47 rearnsha 624: logical, totalsize - textsize,
625: VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
1.1 rearnsha 626: }
627:
628: #ifdef VERBOSE_INIT_ARM
629: printf("Constructing L2 page tables\n");
630: #endif
631:
632: /* Map the stack pages */
1.14 thorpej 633: pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
1.31 thorpej 634: IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 635: pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
1.31 thorpej 636: ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 637: pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
1.31 thorpej 638: UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.14 thorpej 639: pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
1.31 thorpej 640: UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.13 thorpej 641:
1.33 thorpej 642: pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
643: L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
1.1 rearnsha 644:
1.33 thorpej 645: for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
646: pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
1.44 rearnsha 647: kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
1.33 thorpej 648: VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
649: }
1.1 rearnsha 650:
1.20 thorpej 651: /* Map the vector page. */
1.1 rearnsha 652: #if 1
653: /* MULTI-ICE requires that page 0 is NC/NB so that it can download
654: the cache-clean code there. */
1.51 rearnsha 655: pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
1.10 thorpej 656: VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
1.1 rearnsha 657: #else
1.51 rearnsha 658: pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
1.20 thorpej 659: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
1.1 rearnsha 660: #endif
661:
1.42 thorpej 662: /* Map the statically mapped devices. */
663: pmap_devmap_bootstrap(l1pagetable, integrator_devmap);
1.1 rearnsha 664:
665: /*
666: * Now we have the real page tables in place so we can switch to them.
1.23 rearnsha 667: * Once this is done we will be running with the REAL kernel page
668: * tables.
669: */
670:
1.1 rearnsha 671: /* Switch tables */
672: #ifdef VERBOSE_INIT_ARM
673: printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
674: #endif
1.33 thorpej 675: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
1.66 uebayasi 676: cpu_setttb(kernel_l1pt.pv_pa);
1.23 rearnsha 677: cpu_tlb_flushID();
1.33 thorpej 678: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
679:
680: /*
681: * Moved from cpu_startup() as data_abort_handler() references
682: * this during uvm init
683: */
1.64 rmind 684: uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
1.1 rearnsha 685:
686: #ifdef PLCONSOLE
687: /*
688: * The IFPGA registers have just moved.
689: * Detach the diagnostic serial port and reattach at the new address.
690: */
691: plcomcndetach();
692: #endif
693:
694: /*
695: * XXX this should only be done in main() but it useful to
696: * have output earlier ...
697: */
698: consinit();
699:
700: #ifdef VERBOSE_INIT_ARM
701: printf("bootstrap done.\n");
702: #endif
703:
1.20 thorpej 704: arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
1.1 rearnsha 705:
706: /*
707: * Pages were allocated during the secondary bootstrap for the
708: * stacks for different CPU modes.
709: * We must now set the r13 registers in the different CPU modes to
710: * point to these stacks.
711: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
712: * of the stack memory.
713: */
1.38 thorpej 714: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 715: printf("init subsystems: stacks ");
1.38 thorpej 716: #endif
1.1 rearnsha 717:
1.31 thorpej 718: set_stackptr(PSR_IRQ32_MODE,
719: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
720: set_stackptr(PSR_ABT32_MODE,
721: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
722: set_stackptr(PSR_UND32_MODE,
723: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
1.1 rearnsha 724:
725: /*
726: * Well we should set a data abort handler.
1.23 rearnsha 727: * Once things get going this will change as we will need a proper
728: * handler.
1.1 rearnsha 729: * Until then we will use a handler that just panics but tells us
730: * why.
731: * Initialisation of the vectors will just panic on a data abort.
1.52 abs 732: * This just fills in a slightly better one.
1.1 rearnsha 733: */
1.38 thorpej 734: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 735: printf("vectors ");
1.38 thorpej 736: #endif
1.1 rearnsha 737: data_abort_handler_address = (u_int)data_abort_handler;
738: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
739: undefined_handler_address = (u_int)undefinedinstruction_bounce;
740:
741: /* Initialise the undefined instruction handlers */
1.38 thorpej 742: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 743: printf("undefined ");
1.38 thorpej 744: #endif
1.1 rearnsha 745: undefined_init();
746:
1.25 thorpej 747: /* Load memory into UVM. */
1.38 thorpej 748: #ifdef VERBOSE_INIT_ARM
1.25 thorpej 749: printf("page ");
1.38 thorpej 750: #endif
1.25 thorpej 751: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
1.47 rearnsha 752:
753: /* Round the start up and the end down to a page. */
754: physical_freestart = (physical_freestart + PGOFSET) & ~PGOFSET;
755: physical_freeend &= ~PGOFSET;
756:
757: for (loop = 0; loop < bootconfig.dramblocks; loop++) {
758: paddr_t block_start = (paddr_t) bootconfig.dram[loop].address;
759: paddr_t block_end = block_start +
760: (bootconfig.dram[loop].pages * PAGE_SIZE);
761:
762: if (loop == 0) {
763: block_start = physical_freestart;
764: block_end = physical_freeend;
765: }
766:
767:
768: uvm_page_physload(atop(block_start), atop(block_end),
769: atop(block_start), atop(block_end),
770: (bootconfig.dram[loop].flags & BOOT_DRAM_PREFER) ?
771: VM_FREELIST_DEFAULT : VM_FREELIST_DEFAULT + 1);
772: }
1.25 thorpej 773:
1.1 rearnsha 774: /* Boot strap pmap telling it where the kernel page table is */
1.38 thorpej 775: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 776: printf("pmap ");
1.38 thorpej 777: #endif
1.58 matt 778: pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
1.1 rearnsha 779:
780: /* Setup the IRQ system */
1.38 thorpej 781: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 782: printf("irq ");
1.38 thorpej 783: #endif
1.48 rearnsha 784: ifpga_intr_init();
1.1 rearnsha 785:
1.38 thorpej 786: #ifdef VERBOSE_INIT_ARM
1.1 rearnsha 787: printf("done.\n");
1.38 thorpej 788: #endif
1.1 rearnsha 789:
790: #ifdef DDB
791: db_machine_init();
792: if (boothowto & RB_KDB)
793: Debugger();
794: #endif
795:
796: /* We return the new stack pointer address */
797: return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
798: }
799:
800: void
801: consinit(void)
802: {
803: static int consinit_called = 0;
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) {
1.68.8.1! jdc 815: static struct bus_space plcom_bus_space;
! 816: static struct plcom_instance ifpga_pi1 = {
! 817: .pi_type = PLCOM_TYPE_PL010,
! 818: .pi_iot = &plcom_bus_space,
! 819: .pi_size = IFPGA_UART_SIZE,
! 820: .pi_iobase = 0x0
! 821: };
! 822:
1.1 rearnsha 823: ifpga_create_io_bs_tag(&plcom_bus_space,
824: (void*)UART0_BOOT_BASE);
1.68.8.1! jdc 825:
! 826: if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK,
! 827: plcomcnmode, PLCOMCNUNIT))
1.1 rearnsha 828: panic("can't init serial console");
829: return;
830: } else if (PLCOMCNUNIT == 1) {
1.68.8.1! jdc 831: static struct bus_space plcom_bus_space;
! 832: static struct plcom_instance ifpga_pi1 = {
! 833: .pi_type = PLCOM_TYPE_PL010,
! 834: .pi_iot = &plcom_bus_space,
! 835: .pi_size = IFPGA_UART_SIZE,
! 836: .pi_iobase = 0x0
! 837: };
! 838:
1.1 rearnsha 839: ifpga_create_io_bs_tag(&plcom_bus_space,
840: (void*)UART0_BOOT_BASE);
1.68.8.1! jdc 841:
! 842: if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK,
! 843: plcomcnmode, PLCOMCNUNIT))
1.1 rearnsha 844: panic("can't init serial console");
845: return;
846: }
847: #endif
848: #if (NCOM > 0)
849: if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed,
1.41 thorpej 850: COM_FREQ, COM_TYPE_NORMAL, comcnmode))
1.1 rearnsha 851: panic("can't init serial console @%x", CONCOMADDR);
852: return;
853: #endif
854: panic("No serial console configured");
1.23 rearnsha 855: }
856:
857: static void
858: integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize)
859: {
860: volatile unsigned long *cm_sdram
861: = (volatile unsigned long *)0x10000020;
1.46 rearnsha 862: volatile unsigned long *cm_stat
863: = (volatile unsigned long *)0x10000010;
1.23 rearnsha 864:
1.46 rearnsha 865: *memstart = *cm_stat & 0x00ff0000;
1.23 rearnsha 866:
1.46 rearnsha 867: /*
868: * Although the SSRAM overlaps the SDRAM, we can use the wrap-around
869: * to access the entire bank.
870: */
1.23 rearnsha 871: switch ((*cm_sdram >> 2) & 0x7)
872: {
873: case 0:
874: *memsize = 16 * 1024 * 1024;
875: break;
876: case 1:
877: *memsize = 32 * 1024 * 1024;
878: break;
879: case 2:
880: *memsize = 64 * 1024 * 1024;
881: break;
882: case 3:
883: *memsize = 128 * 1024 * 1024;
884: break;
885: case 4:
1.46 rearnsha 886: /* With 256M of memory there is no wrap-around. */
887: *memsize = 256 * 1024 * 1024 - *memstart;
1.23 rearnsha 888: break;
889: default:
890: printf("CM_SDRAM retuns unknown value, using 16M\n");
891: *memsize = 16 * 1024 * 1024;
892: break;
893: }
1.1 rearnsha 894: }
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to integrator_machdep.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / arch / evbarm / integrator