console.c (8016:96a3a31ead2a) console.c (8018:f3975c1b6009)
1/*
2 * Copyright (c) 2003, 2004
3 * The Regents of The University of Michigan
4 * All Rights Reserved
5 *
6 * This code is part of the M5 simulator, developed by Nathan Binkert,
7 * Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions
8 * from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew

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64#include "cserve.h"
65#include "rpb.h"
66
67#define CONS_INT_TX 0x01 /* interrupt enable / state bits */
68#define CONS_INT_RX 0x02
69
70#define PAGE_SIZE (8192)
71
1/*
2 * Copyright (c) 2003, 2004
3 * The Regents of The University of Michigan
4 * All Rights Reserved
5 *
6 * This code is part of the M5 simulator, developed by Nathan Binkert,
7 * Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions
8 * from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew

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64#include "cserve.h"
65#include "rpb.h"
66
67#define CONS_INT_TX 0x01 /* interrupt enable / state bits */
68#define CONS_INT_RX 0x02
69
70#define PAGE_SIZE (8192)
71
72#define KSTACK_REGION_VA 0x20040000
73
72#define KSEG 0xfffffc0000000000
73#define K1BASE 0xfffffc8000000000
74#define KSEG_TO_PHYS(x) (((ulong)x) & ~KSEG)
75
76#define ROUNDUP8(x) ((ulong)(((ulong)x)+7) & ~7)
77#define ROUNDUP128(x) ((ulong)(((ulong)x) + 127) & ~127)
78#define ROUNDUP8K(x) ((ulong)(((ulong)(x)) + 8191) & ~8191)
79

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465
466 /* Region 0 */
467 second[SECOND(0x10000000)] = KPTE(PFN(third_rpb));
468
469 for (i = 0; i < NUM_KERNEL_THIRD; i++) {
470 /* Region 1 */
471 second[SECOND(0x20000000) + i] = KPTE(PFN(third_kernel) + i);
472 }
74#define KSEG 0xfffffc0000000000
75#define K1BASE 0xfffffc8000000000
76#define KSEG_TO_PHYS(x) (((ulong)x) & ~KSEG)
77
78#define ROUNDUP8(x) ((ulong)(((ulong)x)+7) & ~7)
79#define ROUNDUP128(x) ((ulong)(((ulong)x) + 127) & ~127)
80#define ROUNDUP8K(x) ((ulong)(((ulong)(x)) + 8191) & ~8191)
81

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467
468 /* Region 0 */
469 second[SECOND(0x10000000)] = KPTE(PFN(third_rpb));
470
471 for (i = 0; i < NUM_KERNEL_THIRD; i++) {
472 /* Region 1 */
473 second[SECOND(0x20000000) + i] = KPTE(PFN(third_kernel) + i);
474 }
475
473 /* Region 2 */
474 second[SECOND(0x40000000)] = KPTE(PFN(second));
475
476
477 /* For some obscure reason, Dec Unix's database read
478 * from /etc/sysconfigtab is written to this fixed
479 * mapped memory location. Go figure, since it is
480 * not initialized by the console. Maybe it is
481 * to look at the database from the console
482 * after a boot/crash.
483 *
484 * Black magic to estimate the max size. SEGVs on overflow
485 * bugnion
486 */
487
488#define DATABASE_BASE 0x20000000
489#define DATABASE_END 0x20020000
490
491 ulong *dbPage = (ulong*)unix_boot_alloc(1);
476 /* Region 2 */
477 second[SECOND(0x40000000)] = KPTE(PFN(second));
478
479
480 /* For some obscure reason, Dec Unix's database read
481 * from /etc/sysconfigtab is written to this fixed
482 * mapped memory location. Go figure, since it is
483 * not initialized by the console. Maybe it is
484 * to look at the database from the console
485 * after a boot/crash.
486 *
487 * Black magic to estimate the max size. SEGVs on overflow
488 * bugnion
489 */
490
491#define DATABASE_BASE 0x20000000
492#define DATABASE_END 0x20020000
493
494 ulong *dbPage = (ulong*)unix_boot_alloc(1);
495 bzero(dbPage, PAGE_SIZE);
492 second[SECOND(DATABASE_BASE)] = KPTE(PFN(dbPage));
496 second[SECOND(DATABASE_BASE)] = KPTE(PFN(dbPage));
493 for (i = DATABASE_BASE; i < DATABASE_END ; i += 8096) {
497 for (i = DATABASE_BASE; i < DATABASE_END ; i += PAGE_SIZE) {
494 ulong *db = (ulong*)unix_boot_alloc(1);
495 dbPage[THIRD(i)] = KPTE(PFN(db));
496 }
497
498 /* Region 0 */
499 /* Map the HWRPB */
500 for (i = 0; i < HWRPB_PAGES; i++)
501 third_rpb[i] = KPTE(PFN(rpb) + i);

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506 }
507
508 /* Protect the PAL pages */
509 for (i = 1; i < PFN(first); i++)
510 third_rpb[HWRPB_PAGES + MDT_BITMAP_PAGES + i] = KPTE(i);
511
512 /* Set up third_kernel after it's loaded, when we know where it is */
513 kern_first_page = (KSEG_TO_PHYS(m5Conf.kernStart)/PAGE_SIZE);
498 ulong *db = (ulong*)unix_boot_alloc(1);
499 dbPage[THIRD(i)] = KPTE(PFN(db));
500 }
501
502 /* Region 0 */
503 /* Map the HWRPB */
504 for (i = 0; i < HWRPB_PAGES; i++)
505 third_rpb[i] = KPTE(PFN(rpb) + i);

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510 }
511
512 /* Protect the PAL pages */
513 for (i = 1; i < PFN(first); i++)
514 third_rpb[HWRPB_PAGES + MDT_BITMAP_PAGES + i] = KPTE(i);
515
516 /* Set up third_kernel after it's loaded, when we know where it is */
517 kern_first_page = (KSEG_TO_PHYS(m5Conf.kernStart)/PAGE_SIZE);
514 kernel_end = ksp_top = ROUNDUP8K(m5Conf.kernEnd);
518 kernel_end = ROUNDUP8K(m5Conf.kernEnd);
515 bootadr = m5Conf.entryPoint;
516
517 printf_lock("HWRPB 0x%x l1pt 0x%x l2pt 0x%x l3pt_rpb 0x%x l3pt_kernel 0x%x"
518 " l2reserv 0x%x\n",
519 rpb, first, second, third_rpb, third_kernel, reservedFixup);
520 if (kernel_end - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
521 printf_lock("Kernel is more than 8MB 0x%x - 0x%x = 0x%x\n",
522 kernel_end, m5Conf.kernStart,
523 kernel_end - m5Conf.kernStart );
524 panic("kernel too big\n");
525 }
519 bootadr = m5Conf.entryPoint;
520
521 printf_lock("HWRPB 0x%x l1pt 0x%x l2pt 0x%x l3pt_rpb 0x%x l3pt_kernel 0x%x"
522 " l2reserv 0x%x\n",
523 rpb, first, second, third_rpb, third_kernel, reservedFixup);
524 if (kernel_end - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
525 printf_lock("Kernel is more than 8MB 0x%x - 0x%x = 0x%x\n",
526 kernel_end, m5Conf.kernStart,
527 kernel_end - m5Conf.kernStart );
528 panic("kernel too big\n");
529 }
530 printf_lock("kstart = 0x%x, kend = 0x%x, kentry = 0x%x, numCPUs = 0x%x\n", m5Conf.kernStart, m5Conf.kernEnd, m5Conf.entryPoint, m5Conf.numCPUs);
526
531
527 /* Map the kernel's pages into the third level of region 2 */
528 for (ptr = m5Conf.kernStart; ptr < kernel_end; ptr += PAGE_SIZE) {
529 third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr));
530 }
532 ksp_bottom = (ulong)unix_boot_alloc(1);
533 ksp_top = ksp_bottom + PAGE_SIZE;
531
534
532 /* blow 2 pages of phys mem for guards since it maintains 1-to-1 mapping */
533 ksp = ksp_top + (3 * PAGE_SIZE);
534 if (ksp - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
535 printf_lock("Kernel stack pushd us over 8MB\n");
536 panic("ksp too big\n");
537 }
538 if (THIRD_XXX((ulong)ksp_top) > NUM_KERNEL_THIRD * 1024) {
539 panic("increase NUM_KERNEL_THIRD, and change THIRD_XXX\n");
540 }
541 ptr = (ulong) ksp_top;
542 bzero((char *)ptr, PAGE_SIZE * 2);
543 third_kernel[THIRD_XXX(ptr)] = 0; /* Stack Guard Page */
544 ptr += PAGE_SIZE;
545 third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr)); /* Kernel Stack Pages */
546 ptr += PAGE_SIZE;
547 third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr));
548 ptr += PAGE_SIZE;
549 third_kernel[THIRD_XXX(ptr)] = 0; /* Stack Guard Page */
535 ptr = (ulong) ksp_bottom;
536 bzero((char *)ptr, PAGE_SIZE);
537 dbPage[THIRD(KSTACK_REGION_VA)] = 0; /* Stack Guard Page */
538 dbPage[THIRD(KSTACK_REGION_VA + PAGE_SIZE)] = KPTE(PFN(ptr)); /* Kernel Stack Page */
539 dbPage[THIRD(KSTACK_REGION_VA + 2*PAGE_SIZE)] = 0; /* Stack Guard Page */
550
551 /* put argv into the bottom of the stack - argv starts at 1 because
552 * the command thatr got us here (i.e. "unixboot) is in argv[0].
553 */
540
541 /* put argv into the bottom of the stack - argv starts at 1 because
542 * the command thatr got us here (i.e. "unixboot) is in argv[0].
543 */
554 ksp -= 8; /* Back up one longword */
544 ksp = ksp_top - 8; /* Back up one longword */
555 ksp -= argc * sizeof(char *); /* Make room for argv */
556 kargv = (char **) ksp;
557 for (i = 1; i < argc; i++) { /* Copy arguments to stack */
558 ksp -= ((strlen(argv[i]) + 1) + 7) & ~0x7;
559 kargv[i-1] = (char *) ksp;
560 strcpy(kargv[i - 1], argv[i]);
561 }
562 kargc = i - 1;
563 kargv[kargc] = NULL; /* just to be sure; doesn't seem to be used */
564 ksp -= sizeof(char *); /* point above last arg for no real reason */
565
545 ksp -= argc * sizeof(char *); /* Make room for argv */
546 kargv = (char **) ksp;
547 for (i = 1; i < argc; i++) { /* Copy arguments to stack */
548 ksp -= ((strlen(argv[i]) + 1) + 7) & ~0x7;
549 kargv[i-1] = (char *) ksp;
550 strcpy(kargv[i - 1], argv[i]);
551 }
552 kargc = i - 1;
553 kargv[kargc] = NULL; /* just to be sure; doesn't seem to be used */
554 ksp -= sizeof(char *); /* point above last arg for no real reason */
555
566 free_pfn = PFN(ptr);
556 free_pfn = PFN(kernel_end);
567
568 bcopy((char *)&m5_rpb, (char *)rpb, sizeof(struct rpb));
569
570 rpb->rpb_selfref = (struct rpb *) KSEG_TO_PHYS(rpb);
571 rpb->rpb_string = 0x0000004250525748;
572
573 tbb = (ulong *) (((char *) rpb) + ROUNDUP8(sizeof(struct rpb)));
574 rpb->rpb_trans_off = (ulong)tbb - (ulong)rpb;

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605 for (i = 0; i < m5Conf.numCPUs; i++) {
606 struct rpb_percpu *thisCPU = (struct rpb_percpu*)
607 ((ulong)rpb_percpu + percpu_size * i);
608
609 bzero((char *)thisCPU, percpu_size);
610 bcopy((char *)&m5_rpb_percpu, (char *)thisCPU,
611 sizeof(struct rpb_percpu));
612
557
558 bcopy((char *)&m5_rpb, (char *)rpb, sizeof(struct rpb));
559
560 rpb->rpb_selfref = (struct rpb *) KSEG_TO_PHYS(rpb);
561 rpb->rpb_string = 0x0000004250525748;
562
563 tbb = (ulong *) (((char *) rpb) + ROUNDUP8(sizeof(struct rpb)));
564 rpb->rpb_trans_off = (ulong)tbb - (ulong)rpb;

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595 for (i = 0; i < m5Conf.numCPUs; i++) {
596 struct rpb_percpu *thisCPU = (struct rpb_percpu*)
597 ((ulong)rpb_percpu + percpu_size * i);
598
599 bzero((char *)thisCPU, percpu_size);
600 bcopy((char *)&m5_rpb_percpu, (char *)thisCPU,
601 sizeof(struct rpb_percpu));
602
613 thisCPU->rpb_pcb.rpb_ksp = ksp;
603 thisCPU->rpb_pcb.rpb_ksp = (KSTACK_REGION_VA + 2*PAGE_SIZE - (ksp_top - ksp));
614 thisCPU->rpb_pcb.rpb_ptbr = PFN(first);
615
616 thisCPU->rpb_logout = KSEG_TO_PHYS(percpu_logout);
617 thisCPU->rpb_logout_len = PAGE_SIZE;
618
619 printf_lock("KSP: 0x%x PTBR 0x%x\n",
620 thisCPU->rpb_pcb.rpb_ksp, thisCPU->rpb_pcb.rpb_ptbr);
621 }

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637 rpb_ctb->rpb_length = sizeof(ctb_tt) - sizeof(rpb_ctb);
638
639 /*
640 * uart initizliation
641 */
642 ctb_tt->ctb_csr = 0;
643 ctb_tt->ctb_tivec = 0x6c0; /* matches tlaser pal code */
644 ctb_tt->ctb_rivec = 0x680; /* matches tlaser pal code */
604 thisCPU->rpb_pcb.rpb_ptbr = PFN(first);
605
606 thisCPU->rpb_logout = KSEG_TO_PHYS(percpu_logout);
607 thisCPU->rpb_logout_len = PAGE_SIZE;
608
609 printf_lock("KSP: 0x%x PTBR 0x%x\n",
610 thisCPU->rpb_pcb.rpb_ksp, thisCPU->rpb_pcb.rpb_ptbr);
611 }

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627 rpb_ctb->rpb_length = sizeof(ctb_tt) - sizeof(rpb_ctb);
628
629 /*
630 * uart initizliation
631 */
632 ctb_tt->ctb_csr = 0;
633 ctb_tt->ctb_tivec = 0x6c0; /* matches tlaser pal code */
634 ctb_tt->ctb_rivec = 0x680; /* matches tlaser pal code */
645 ctb_tt->ctb_baud = 9600;
635 ctb_tt->ctb_term_type = 2;
646 ctb_tt->ctb_put_sts = 0;
647 ctb_tt->ctb_get_sts = 0;
648
649 rpb_crb = (struct rpb_crb *) (((ulong)rpb_ctb) + sizeof(struct ctb_tt));
650 rpb->rpb_crb_off = ((ulong)rpb_crb) - (ulong)rpb;
651
652 bzero((char *)rpb_crb, sizeof(struct rpb_crb));
653

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637 ctb_tt->ctb_get_sts = 0;
638
639 rpb_crb = (struct rpb_crb *) (((ulong)rpb_ctb) + sizeof(struct ctb_tt));
640 rpb->rpb_crb_off = ((ulong)rpb_crb) - (ulong)rpb;
641
642 bzero((char *)rpb_crb, sizeof(struct rpb_crb));
643

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