vgasrc/geodevga.h

   1 // Geode GX2/LX VGA functions
   2 //
   3 // Copyright (C) 2009 Chris Kindt
   4 //
   5 // Writen for Google Summer of Code 2009 for the coreboot project
   6 //
   7 // This file may be distributed under the terms of the GNU LGPLv3 license.
   8
   9 #ifndef  GEODEVGA_H
  10 #define  GEODEVGA_H
  11
  12 #define VRC_INDEX                       0xAC1C  // Index register
  13 #define VRC_DATA                        0xAC1E  // Data register
  14 #define VR_UNLOCK                       0xFC53  // Virtual register unlock code
  15
  16 #define EXTENDED_REGISTER_LOCK          0x30
  17 #define EXTENDED_MODE_CONTROL           0x43
  18 #define EXTENDED_START_ADDR             0x44
  19
  20 #define CRTCE_UNLOCK                    0x4c
  21 #define CRTCE_LOCK                      0xff
  22
  23 // Graphics-specific registers:
  24 #define OEM_BAR0                        0x50
  25 #define OEM_BAR1                        0x54
  26 #define OEM_BAR2                        0x58
  27 #define OEM_BAR3                        0x5C
  28
  29 #define GEODE_PCI_ADDR                  0x80000900
  30 #define GEODE_PCI_CMD                   (GEODE_PCI_ADDR + 0x04)
  31 #define GEODE_PCI_FB                    (GEODE_PCI_ADDR + 0x10)
  32 #define GEODE_PCI_DC                    (GEODE_PCI_ADDR + 0x18)
  33 #define GEODE_PCI_VP                    (GEODE_PCI_ADDR + 0x1c)
  34
  35 #define DC_LOCK_LOCK                    0x00000000
  36 #define DC_LOCK_UNLOCK                  0x00004758
  37
  38 /* LX MSRs */
  39 #define MSR_GLIU0                       (1 << 28)
  40 #define MSR_GLIU0_BASE4                 (MSR_GLIU0 + 0x23)  /* LX */
  41 #define GLIU0_P2D_BM_4                  (MSR_GLIU0 + 0x24)  /* GX2 */
  42 #define GLIU0_IOD_BM_0                  (MSR_GLIU0 + 0xE0)
  43 #define GLIU0_IOD_BM_1                  (MSR_GLIU0 + 0xE1)
  44 #define DC_SPARE                        0x80000011
  45 #define VP_MSR_CONFIG_GX2               0xc0002001  /* GX2 */
  46 #define VP_MSR_CONFIG_LX                0x48002001  /* LX */
  47
  48 /* DC REG OFFSET */
  49 #define DC_UNLOCK                       0x0
  50 #define DC_GENERAL_CFG                  0x4
  51 #define DC_DISPLAY_CFG                  0x8
  52 #define DC_FB_ST_OFFSET                 0x10
  53 #define DC_CB_ST_OFFSET                 0x14
  54 #define DC_CURS_ST_OFFSET               0x18
  55 #define DC_GLIU0_MEM_OFFSET             0x84
  56
  57 /* VP REG OFFSET */
  58 #define VP_VCFG                         0x0
  59 #define VP_DCFG                         0x8
  60 #define VP_MISC                         0x50
  61
  62
  63 /* DC bits */
  64 #define DC_VGAE                         (1 << 7)
  65 #define DC_GDEN                         (1 << 3)
  66 #define DC_TRUP                         (1 << 6)
  67
  68 /* VP bits */
  69 #define VP_CRT_EN                       (1 << 0)
  70 #define VP_HSYNC_EN                     (1 << 1)
  71 #define VP_VSYNC_EN                     (1 << 2)
  72 #define VP_DAC_BL_EN                    (1 << 3)
  73 #define VP_CRT_SKEW                     (1 << 16)
  74 #define VP_BYP_BOTH                     (1 << 0)
  75
  76 /* Mask */
  77 #define DC_CFG_MSK                      0xf000a6
  78
  79 int geodevga_init();
  80
  81 #endif