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528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 | /* * vreset.c * * Initialize the VGA control registers to 80x25 text mode. * * Adapted from a program by: * Steve Sellgren * San Francisco Indigo Company * sfindigo!sellgren@uunet.uu.net * * Original concept by: * Gary Thomas <gdt@linuxppc.org> * Adapted for Moto boxes by: * Pat Kane & Mark Scott, 1996 * Adapted for IBM portables by: * Takeshi Ishimoto * Multi-console support: * Terje Malmedal <terje.malmedal@usit.uio.no> */ #include "iso_font.h" extern char *vidmem; extern int lines, cols; static void mdelay(int ms) { for (; ms > 0; --ms) udelay(1000); } /* * VGA Register */ struct VgaRegs { unsigned short io_port; unsigned char io_index; unsigned char io_value; }; /* * Default console text mode registers used to reset * graphics adapter. */ #define NREGS 54 #define ENDMK 0xFFFF /* End marker */ #define S3Vendor 0x5333 #define CirrusVendor 0x1013 #define DiamondVendor 0x100E #define MatroxVendor 0x102B #define ParadiseVendor 0x101C struct VgaRegs GenVgaTextRegs[NREGS+1] = { /* port index value */ /* SR Regs */ 0x3c4, 0x1, 0x0, 0x3c4, 0x2, 0x3, 0x3c4, 0x3, 0x0, 0x3c4, 0x4, 0x2, /* CR Regs */ 0x3d4, 0x0, 0x5f, 0x3d4, 0x1, 0x4f, 0x3d4, 0x2, 0x50, 0x3d4, 0x3, 0x82, 0x3d4, 0x4, 0x55, 0x3d4, 0x5, 0x81, 0x3d4, 0x6, 0xbf, 0x3d4, 0x7, 0x1f, 0x3d4, 0x8, 0x00, 0x3d4, 0x9, 0x4f, 0x3d4, 0xa, 0x0d, 0x3d4, 0xb, 0x0e, 0x3d4, 0xc, 0x00, 0x3d4, 0xd, 0x00, 0x3d4, 0xe, 0x00, 0x3d4, 0xf, 0x00, 0x3d4, 0x10, 0x9c, 0x3d4, 0x11, 0x8e, 0x3d4, 0x12, 0x8f, 0x3d4, 0x13, 0x28, 0x3d4, 0x14, 0x1f, 0x3d4, 0x15, 0x96, 0x3d4, 0x16, 0xb9, 0x3d4, 0x17, 0xa3, /* GR Regs */ 0x3ce, 0x0, 0x0, 0x3ce, 0x1, 0x0, 0x3ce, 0x2, 0x0, 0x3ce, 0x3, 0x0, 0x3ce, 0x4, 0x0, 0x3ce, 0x5, 0x10, 0x3ce, 0x6, 0xe, 0x3ce, 0x7, 0x0, 0x3ce, 0x8, 0xff, ENDMK }; struct VgaRegs S3TextRegs[NREGS+1] = { /* port index value */ /* SR Regs */ 0x3c4, 0x1, 0x0, 0x3c4, 0x2, 0x3, 0x3c4, 0x3, 0x0, 0x3c4, 0x4, 0x2, /* CR Regs */ 0x3d4, 0x0, 0x5f, 0x3d4, 0x1, 0x4f, 0x3d4, 0x2, 0x50, 0x3d4, 0x3, 0x82, 0x3d4, 0x4, 0x55, 0x3d4, 0x5, 0x81, 0x3d4, 0x6, 0xbf, 0x3d4, 0x7, 0x1f, 0x3d4, 0x8, 0x00, 0x3d4, 0x9, 0x4f, 0x3d4, 0xa, 0x0d, 0x3d4, 0xb, 0x0e, 0x3d4, 0xc, 0x00, 0x3d4, 0xd, 0x00, 0x3d4, 0xe, 0x00, 0x3d4, 0xf, 0x00, 0x3d4, 0x10, 0x9c, 0x3d4, 0x11, 0x8e, 0x3d4, 0x12, 0x8f, 0x3d4, 0x13, 0x28, 0x3d4, 0x14, 0x1f, 0x3d4, 0x15, 0x96, 0x3d4, 0x16, 0xb9, 0x3d4, 0x17, 0xa3, /* GR Regs */ 0x3ce, 0x0, 0x0, 0x3ce, 0x1, 0x0, 0x3ce, 0x2, 0x0, 0x3ce, 0x3, 0x0, 0x3ce, 0x4, 0x0, 0x3ce, 0x5, 0x10, 0x3ce, 0x6, 0xe, 0x3ce, 0x7, 0x0, 0x3ce, 0x8, 0xff, ENDMK }; struct RGBColors { unsigned char r, g, b; }; /* * Default console text mode color table. * These values were obtained by booting Linux with * text mode firmware & then dumping the registers. */ struct RGBColors TextCLUT[256] = { /* red green blue */ 0x0, 0x0, 0x0, 0x0, 0x0, 0x2a, 0x0, 0x2a, 0x0, 0x0, 0x2a, 0x2a, 0x2a, 0x0, 0x0, 0x2a, 0x0, 0x2a, 0x2a, 0x2a, 0x0, 0x2a, 0x2a, 0x2a, 0x0, 0x0, 0x15, 0x0, 0x0, 0x3f, 0x0, 0x2a, 0x15, 0x0, 0x2a, 0x3f, 0x2a, 0x0, 0x15, 0x2a, 0x0, 0x3f, 0x2a, 0x2a, 0x15, 0x2a, 0x2a, 0x3f, 0x0, 0x15, 0x0, 0x0, 0x15, 0x2a, 0x0, 0x3f, 0x0, 0x0, 0x3f, 0x2a, 0x2a, 0x15, 0x0, 0x2a, 0x15, 0x2a, 0x2a, 0x3f, 0x0, 0x2a, 0x3f, 0x2a, 0x0, 0x15, 0x15, 0x0, 0x15, 0x3f, 0x0, 0x3f, 0x15, 0x0, 0x3f, 0x3f, 0x2a, 0x15, 0x15, 0x2a, 0x15, 0x3f, 0x2a, 0x3f, 0x15, 0x2a, 0x3f, 0x3f, 0x15, 0x0, 0x0, 0x15, 0x0, 0x2a, 0x15, 0x2a, 0x0, 0x15, 0x2a, 0x2a, 0x3f, 0x0, 0x0, 0x3f, 0x0, 0x2a, 0x3f, 0x2a, 0x0, 0x3f, 0x2a, 0x2a, 0x15, 0x0, 0x15, 0x15, 0x0, 0x3f, 0x15, 0x2a, 0x15, 0x15, 0x2a, 0x3f, 0x3f, 0x0, 0x15, 0x3f, 0x0, 0x3f, 0x3f, 0x2a, 0x15, 0x3f, 0x2a, 0x3f, 0x15, 0x15, 0x0, 0x15, 0x15, 0x2a, 0x15, 0x3f, 0x0, 0x15, 0x3f, 0x2a, 0x3f, 0x15, 0x0, 0x3f, 0x15, 0x2a, 0x3f, 0x3f, 0x0, 0x3f, 0x3f, 0x2a, 0x15, 0x15, 0x15, 0x15, 0x15, 0x3f, 0x15, 0x3f, 0x15, 0x15, 0x3f, 0x3f, 0x3f, 0x15, 0x15, 0x3f, 0x15, 0x3f, 0x3f, 0x3f, 0x15, 0x3f, 0x3f, 0x3f, 0x39, 0xc, 0x5, 0x15, 0x2c, 0xf, 0x26, 0x10, 0x3d, 0x29, 0x29, 0x38, 0x4, 0x1a, 0xe, 0x2, 0x1e, 0x3a, 0x3c, 0x25, 0x33, 0x3c, 0xc, 0x2c, 0x3f, 0x3, 0x2b, 0x1c, 0x9, 0x13, 0x25, 0x2a, 0x35, 0x1e, 0xa, 0x38, 0x24, 0x8, 0x3, 0x3, 0xe, 0x36, 0xc, 0x6, 0x2a, 0x26, 0x3, 0x32, 0x5, 0x2f, 0x33, 0x3c, 0x35, 0x2f, 0x2d, 0x26, 0x3e, 0xd, 0xa, 0x10, 0x25, 0x3c, 0x11, 0xd, 0x4, 0x2e, 0x5, 0x19, 0x3e, 0xc, 0x13, 0x34, 0x2b, 0x6, 0x24, 0x4, 0x3, 0xd, 0x2f, 0x3c, 0xc, 0x2a, 0x37, 0x1f, 0xf, 0x12, 0x38, 0x38, 0xe, 0x2a, 0x12, 0x2f, 0x19, 0x29, 0x2e, 0x31, 0x25, 0x13, 0x3e, 0x33, 0x3e, 0x33, 0x1d, 0x2c, 0x25, 0x15, 0x15, 0x5, 0x32, 0x25, 0x39, 0x1a, 0x7, 0x1f, 0x13, 0xe, 0x1d, 0x36, 0x17, 0x34, 0xf, 0x15, 0x23, 0x2, 0x35, 0xd, 0x15, 0x3f, 0xc, 0x14, 0x2f, 0xf, 0x19, 0x21, 0x3e, 0x27, 0x11, 0x2f, 0x38, 0x3f, 0x3c, 0x36, 0x2d, 0x15, 0x16, 0x17, 0x2, 0x1, 0xa, 0x3d, 0x1b, 0x11, 0x3f, 0x21, 0x3c, 0xd, 0x1a, 0x39, 0x3d, 0x8, 0xe, 0xe, 0x22, 0x21, 0x23, 0x1e, 0x30, 0x5, 0x1f, 0x22, 0x3d, 0x1e, 0x2f, 0xa, 0x0, 0x1c, 0xe, 0x0, 0x1c, 0x15, 0x0, 0x1c, 0x1c, 0x0, 0x15, 0x1c, 0x0, 0xe, 0x1c, 0x0, 0x7, 0x1c, 0xe, 0xe, 0x1c, 0x11, 0xe, 0x1c, 0x15, 0xe, 0x1c, 0x18, 0xe, 0x1c, 0x1c, 0xe, 0x1c, 0x1c, 0xe, 0x18, 0x1c, 0xe, 0x15, 0x1c, 0xe, 0x11, 0x1c, 0xe, 0xe, 0x1c, 0x11, 0xe, 0x1c, 0x15, 0xe, 0x1c, 0x18, 0xe, 0x1c, 0x1c, 0xe, 0x18, 0x1c, 0xe, 0x15, 0x1c, 0xe, 0x11, 0x1c, 0xe, 0xe, 0x1c, 0xe, 0xe, 0x1c, 0x11, 0xe, 0x1c, 0x15, 0xe, 0x1c, 0x18, 0xe, 0x1c, 0x1c, 0xe, 0x18, 0x1c, 0xe, 0x15, 0x1c, 0xe, 0x11, 0x1c, 0x14, 0x14, 0x1c, 0x16, 0x14, 0x1c, 0x18, 0x14, 0x1c, 0x1a, 0x14, 0x1c, 0x1c, 0x14, 0x1c, 0x1c, 0x14, 0x1a, 0x1c, 0x14, 0x18, 0x1c, 0x14, 0x16, 0x1c, 0x14, 0x14, 0x1c, 0x16, 0x14, 0x1c, 0x18, 0x14, 0x1c, 0x1a, 0x14, 0x1c, 0x1c, 0x14, 0x1a, 0x1c, 0x14, 0x18, 0x1c, 0x14, 0x16, 0x1c, 0x14, 0x14, 0x1c, 0x14, 0x14, 0x1c, 0x16, 0x14, 0x1c, 0x18, 0x14, 0x1c, 0x1a, 0x14, 0x1c, 0x1c, 0x14, 0x1a, 0x1c, 0x14, 0x18, 0x1c, 0x14, 0x16, 0x1c, 0x0, 0x0, 0x10, 0x4, 0x0, 0x10, 0x8, 0x0, 0x10, 0xc, 0x0, 0x10, 0x10, 0x0, 0x10, 0x10, 0x0, 0xc, 0x10, 0x0, 0x8, 0x10, 0x0, 0x4, 0x10, 0x0, 0x0, 0x10, 0x4, 0x0, 0x10, 0x8, 0x0, 0x10, 0xc, 0x0, 0x10, 0x10, 0x0, 0xc, 0x10, 0x0, 0x8, 0x10, 0x0, 0x4, 0x10, 0x0, 0x0, 0x10, 0x0, 0x0, 0x10, 0x4, 0x0, 0x10, 0x8, 0x0, 0x10, 0xc, 0x0, 0x10, 0x10, 0x0, 0xc, 0x10, 0x0, 0x8, 0x10, 0x0, 0x4, 0x10, 0x8, 0x8, 0x10, 0xa, 0x8, 0x10, 0xc, 0x8, 0x10, 0xe, 0x8, 0x10, 0x10, 0x8, 0x10, 0x10, 0x8, 0xe, 0x10, 0x8, 0xc, 0x10, 0x8, 0xa, 0x10, 0x8, 0x8, 0x10, 0xa, 0x8, 0x10, 0xc, 0x8, 0x10, 0xe, 0x8, 0x10, 0x10, 0x8, 0xe, 0x10, 0x8, 0xc, 0x10, 0x8, 0xa, 0x10, 0x8, 0x8, 0x10, 0x8, 0x8, 0x10, 0xa, 0x8, 0x10, 0xc, 0x8, 0x10, 0xe, 0x8, 0x10, 0x10, 0x8, 0xe, 0x10, 0x8, 0xc, 0x10, 0x8, 0xa, 0x10, 0xb, 0xb, 0x10, 0xc, 0xb, 0x10, 0xd, 0xb, 0x10, 0xf, 0xb, 0x10, 0x10, 0xb, 0x10, 0x10, 0xb, 0xf, 0x10, 0xb, 0xd, 0x10, 0xb, 0xc, 0x10, 0xb, 0xb, 0x10, 0xc, 0xb, 0x10, 0xd, 0xb, 0x10, 0xf, 0xb, 0x10, 0x10, 0xb, 0xf, 0x10, 0xb, 0xd, 0x10, 0xb, 0xc, 0x10, 0xb, 0xb, 0x10, 0xb, 0xb, 0x10, 0xc, 0xb, 0x10, 0xd, 0xb, 0x10, 0xf, 0xb, 0x10, 0x10, 0xb, 0xf, 0x10, 0xb, 0xd, 0x10, 0xb, 0xc, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }; unsigned char AC[21] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x00, 0x0F, 0x08, 0x00}; static int scanPCI(int start_slt); static int PCIVendor(int); static void printslots(void); extern void puthex(unsigned long); extern void puts(const char *); static void unlockS3(void); static inline outw(int port, unsigned short val) { outb(port, val >> 8); outb(port+1, val); } #define PPC_601 1 vga_init(unsigned char *ISA_mem) { int slot; struct VgaRegs *VgaTextRegs; #if 0 if ((_get_PVR()>>16) == PPC_601) { return(old_vga_init(ISA_mem)); } #endif /* See if VGA already in TEXT mode - exit if so! */ outb(0x3CE, 0x06); if ((inb(0x3CF) & 0x01) == 0){puts("VGA already in text mode\n"); return;} /* If no VGA responding in text mode, then we have some work to do... */ slot = -1; while((slot = scanPCI(slot)) > -1) { /* find video card in use */ unlockVideo(slot); /* enable I/O to card */ VgaTextRegs = GenVgaTextRegs; switch (PCIVendor(slot)) { default: break; case(S3Vendor): unlockS3(); VgaTextRegs = S3TextRegs; break; case(CirrusVendor): outw(0x3C4, 0x0612); /* unlock ext regs */ outw(0x3C4, 0x0700); /* reset ext sequence mode */ break; case(ParadiseVendor): /* IBM Portable 850 */ outw(0x3ce, 0x0f05); /* unlock pardise registers */ outw(0x3c4, 0x0648); outw(0x3d4, 0x2985); outw(0x3d4, 0x34a6); outb(0x3ce, 0x0b); /* disable linear addressing */ outb(0x3cf, inb(0x3cf) & ~0x30); outw(0x3c4, 0x1400); outb(0x3ce, 0x0e); /* disable 256 color mode */ outb(0x3cf, inb(0x3cf) & ~0x01); outb(0xd00, 0xff); /* enable auto-centering */ if (!(inb(0xd01) & 0x03)) { outb(0x3d4, 0x33); outb(0x3d5, inb(0x3d5) & ~0x90); outb(0x3d4, 0x32); outb(0x3d5, inb(0x3d5) | 0x04); outw(0x3d4, 0x0250); outw(0x3d4, 0x07ba); outw(0x3d4, 0x0900); outw(0x3d4, 0x15e7); outw(0x3d4, 0x2a95); } outw(0x3d4, 0x34a0); break; #if 0 /* Untested - probably doesn't work */ case(MatroxVendor): case(DiamondVendor): puts("VGA Chip Vendor ID: "); puthex(PCIVendor(slot)); puts("\n"); mdelay(1000); #endif }; outw(0x3C4, 0x0120); /* disable video */ setTextRegs(VgaTextRegs); /* initial register setup */ setTextCLUT(0); /* load color lookup table */ loadFont(ISA_mem); /* load font */ setTextRegs(VgaTextRegs); /* reload registers */ outw(0x3C4, 0x0100); /* re-enable video */ clearVideoMemory(); if (PCIVendor(slot) == S3Vendor) { outb(0x3c2, 0x63); /* MISC */ } /* endif */ #ifdef DEBUG printslots(); mdelay(5000); #endif mdelay(1000); /* give time for the video monitor to come up */ } return (1); /* 'CRT' I/O supported */ } /* * Write to VGA Attribute registers. */ writeAttr(index, data, videoOn) unsigned char index; unsigned char data; unsigned char videoOn; /* video on flag */ { unsigned char v; v = inb(0x3da); /* reset attr. address toggle */ if (videoOn) outb(0x3c0, (index & 0x1F) | 0x20); else outb(0x3c0, (index & 0x1F)); outb(0x3c0, data); } setTextRegs(struct VgaRegs *svp) { int i; /* * saved settings */ while( svp->io_port != ENDMK ) { outb(svp->io_port, svp->io_index); outb(svp->io_port+1, svp->io_value); svp++; } outb(0x3c2, 0x67); /* MISC */ outb(0x3c6, 0xff); /* MASK */ for ( i = 0; i < 0x10; i++) writeAttr(i, AC[i], 0); /* pallete */ writeAttr(0x10, 0x0c, 0); /* text mode */ writeAttr(0x11, 0x00, 0); /* overscan color (border) */ writeAttr(0x12, 0x0f, 0); /* plane enable */ writeAttr(0x13, 0x08, 0); /* pixel panning */ writeAttr(0x14, 0x00, 1); /* color select; video on */ } setTextCLUT(int shift) { int i; outb(0x3C6, 0xFF); i = inb(0x3C7); outb(0x3C8, 0); i = inb(0x3C7); for ( i = 0; i < 256; i++) { outb(0x3C9, TextCLUT[i].r << shift); outb(0x3C9, TextCLUT[i].g << shift); outb(0x3C9, TextCLUT[i].b << shift); } } loadFont(unsigned char *ISA_mem) { int i, j; unsigned char *font_page = (unsigned char *) &ISA_mem[0xA0000]; outb(0x3C2, 0x67); /* * Load font */ i = inb(0x3DA); /* Reset Attr toggle */ outb(0x3C0,0x30); outb(0x3C0, 0x01); /* graphics mode */ outw(0x3C4, 0x0001); /* reset sequencer */ outw(0x3C4, 0x0204); /* write to plane 2 */ outw(0x3C4, 0x0406); /* enable plane graphics */ outw(0x3C4, 0x0003); /* reset sequencer */ outw(0x3CE, 0x0402); /* read plane 2 */ outw(0x3CE, 0x0500); /* write mode 0, read mode 0 */ outw(0x3CE, 0x0605); /* set graphics mode */ for (i = 0; i < sizeof(font); i += 16) { for (j = 0; j < 16; j++) { __asm__ volatile("eieio"); font_page[(2*i)+j] = font[i+j]; } } } static void unlockS3(void) { int s3_device_id; outw(0x3d4, 0x3848); outw(0x3d4, 0x39a5); outb(0x3d4, 0x2d); s3_device_id = inb(0x3d5) << 8; outb(0x3d4, 0x2e); s3_device_id |= inb(0x3d5); if (s3_device_id != 0x8812) { /* From the S3 manual */ outb(0x46E8, 0x10); /* Put into setup mode */ outb(0x3C3, 0x10); outb(0x102, 0x01); /* Enable registers */ outb(0x46E8, 0x08); /* Enable video */ outb(0x3C3, 0x08); outb(0x4AE8, 0x00); #if 0 outb(0x42E8, 0x80); /* Reset graphics engine? */ #endif outb(0x3D4, 0x38); /* Unlock all registers */ outb(0x3D5, 0x48); outb(0x3D4, 0x39); outb(0x3D5, 0xA5); outb(0x3D4, 0x40); outb(0x3D5, inb(0x3D5)|0x01); outb(0x3D4, 0x33); outb(0x3D5, inb(0x3D5)&~0x52); outb(0x3D4, 0x35); outb(0x3D5, inb(0x3D5)&~0x30); outb(0x3D4, 0x3A); outb(0x3D5, 0x00); outb(0x3D4, 0x53); outb(0x3D5, 0x00); outb(0x3D4, 0x31); outb(0x3D5, inb(0x3D5)&~0x4B); outb(0x3D4, 0x58); outb(0x3D5, 0); outb(0x3D4, 0x54); outb(0x3D5, 0x38); outb(0x3D4, 0x60); outb(0x3D5, 0x07); outb(0x3D4, 0x61); outb(0x3D5, 0x80); outb(0x3D4, 0x62); outb(0x3D5, 0xA1); outb(0x3D4, 0x69); /* High order bits for cursor address */ outb(0x3D5, 0); outb(0x3D4, 0x32); outb(0x3D5, inb(0x3D5)&~0x10); } else { outw(0x3c4, 0x0806); /* IBM Portable 860 */ outw(0x3c4, 0x1041); outw(0x3c4, 0x1128); outw(0x3d4, 0x4000); outw(0x3d4, 0x3100); outw(0x3d4, 0x3a05); outw(0x3d4, 0x6688); outw(0x3d4, 0x5800); /* disable linear addressing */ outw(0x3d4, 0x4500); /* disable H/W cursor */ outw(0x3c4, 0x5410); /* enable auto-centering */ outw(0x3c4, 0x561f); outw(0x3c4, 0x1b80); /* lock DCLK selection */ outw(0x3d4, 0x3900); /* lock S3 registers */ outw(0x3d4, 0x3800); } /* endif */ } /* * cursor() sets an offset (0-1999) into the 80x25 text area */ void cursor(int x, int y) { int pos = (y*cols)+x; outb(0x3D4, 14); outb(0x3D5, pos >> 8); outb(0x3D4, 15); outb(0x3D5, pos); } clearVideoMemory() { int i, j; for (i = 0; i < lines; i++) { for (j = 0; j < cols; j++) { vidmem[((i*cols)+j)*2] = 0x20; /* fill with space character */ vidmem[((i*cols)+j)*2+1] = 0x07; /* set bg & fg attributes */ } } } /* ============ */ #define NSLOTS 8 #define NPCIREGS 5 /* should use devfunc number/indirect method to be totally safe on all machines, this works for now on 3 slot Moto boxes */ struct PCI_ConfigInfo { unsigned long * config_addr; unsigned long regs[NPCIREGS]; } PCI_slots [NSLOTS] = { { (unsigned long *)0x80808000, 0xDEADBEEF }, /* onboard */ { (unsigned long *)0x80800800, 0xDEADBEEF }, /* onboard */ { (unsigned long *)0x80801000, 0xDEADBEEF }, /* onboard */ { (unsigned long *)0x80802000, 0xDEADBEEF }, /* onboard */ { (unsigned long *)0x80804000, 0xDEADBEEF }, /* onboard */ { (unsigned long *)0x80810000, 0xDEADBEEF }, /* slot A/1 */ { (unsigned long *)0x80820000, 0xDEADBEEF }, /* slot B/2 */ { (unsigned long *)0x80840000, 0xDEADBEEF } /* slot C/3 */ }; /* * The following code modifies the PCI Command register * to enable memory and I/O accesses. */ unlockVideo(slot) { volatile unsigned char * ppci; ppci = (unsigned char * )PCI_slots[slot].config_addr; ppci[4] = 0x0003; /* enable memory and I/O accesses */ ppci[0x10] = 0x00000; /* turn off memory mapping */ ppci[0x11] = 0x00000; /* mem_base = 0 */ ppci[0x12] = 0x00000; ppci[0x13] = 0x00000; __asm__ volatile("eieio"); outb(0x3d4, 0x11); outb(0x3d5, 0x0e); /* unlock CR0-CR7 */ } long SwapBytes(long lv) /* turn little endian into big indian long */ { long t; t = (lv&0x000000FF) << 24; t |= (lv&0x0000FF00) << 8; t |= (lv&0x00FF0000) >> 8; t |= (lv&0xFF000000) >> 24; return(t); } #define DEVID 0 #define CMD 1 #define CLASS 2 #define MEMBASE 4 int scanPCI(int start_slt) { int slt, r; struct PCI_ConfigInfo *pslot; int theSlot = -1; int highVgaSlot = 0; for ( slt = start_slt + 1; slt < NSLOTS; slt++) { pslot = &PCI_slots[slt]; for ( r = 0; r < NPCIREGS; r++) { pslot->regs[r] = SwapBytes ( pslot->config_addr[r] ); } /* card in slot ? */ if ( pslot->regs[DEVID] != 0xFFFFFFFF ) { /* VGA ? */ if ( ((pslot->regs[CLASS] & 0xFFFFFF00) == 0x03000000) || ((pslot->regs[CLASS] & 0xFFFFFF00) == 0x00010000)) { highVgaSlot = slt; /* did firmware enable it ? */ if ( (pslot->regs[CMD] & 0x03) ) { theSlot = slt; break; } } } } return ( theSlot ); } /* return Vendor ID of card in the slot */ static int PCIVendor(int slotnum) { struct PCI_ConfigInfo *pslot; pslot = &PCI_slots[slotnum]; return (pslot->regs[DEVID] & 0xFFFF); } static void printslots(void) { int i; struct PCI_ConfigInfo *pslot; for(i=0; i < NSLOTS; i++) { #if 0 pslot = &PCI_slots[i]; printf("Slot: %d, Addr: %x, Vendor: %08x, Class: %08x\n", i, pslot->config_addr, pslot->regs[0], pslot->regs[2]); #else puts("PCI Slot number: "); puthex(i); puts(" Vendor ID: "); puthex(PCIVendor(i)); puts("\n"); #endif } } |