src/mainboard/kontron/ktqm77/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <types.h>
   4 #include <device/device.h>
   5 #include <device/pci_def.h>
   6 #include <console/console.h>
   7 #if CONFIG(VGA_ROM_RUN)
   8 #include <x86emu/x86emu.h>
   9 #endif
  10 #include <option.h>
  11 #include <arch/interrupt.h>
  12 #include <southbridge/intel/bd82x6x/pch.h>
  13
  14 #if CONFIG(VGA_ROM_RUN)
  15 static int int15_handler(void)
  16 {
  17         int res = 0;
  18
  19         printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
  20                           __func__, X86_AX, X86_BX, X86_CX, X86_DX);
  21
  22         switch (X86_EAX & 0xffff) {
  23         case 0x5f34:
  24                 /*
  25                  * Set Panel Fitting Hook:
  26                  *  bit 2 = Graphics Stretching
  27                  *  bit 1 = Text Stretching
  28                  *  bit 0 = Centering (do not set with bit1 or bit2)
  29                  *  0     = video BIOS default
  30                  */
  31                 X86_EAX &= 0xffff0000;
  32                 X86_EAX |= 0x005f;
  33                 X86_ECX &= 0xffffff00;
  34                 X86_ECX |= 0x00;        /* Use video BIOS default */
  35                 res = 1;
  36                 break;
  37         case 0x5f35:
  38                 /*
  39                  * Boot Display Device Hook:
  40                  *  bit 0 = CRT
  41                  *  bit 1 = TV (eDP)
  42                  *  bit 2 = EFP
  43                  *  bit 3 = LFP
  44                  *  bit 4 = CRT2
  45                  *  bit 5 = TV2 (eDP)
  46                  *  bit 6 = EFP2
  47                  *  bit 7 = LFP2
  48                  */
  49                 X86_EAX &= 0xffff0000;
  50                 X86_EAX |= 0x005f;
  51                 X86_ECX &= 0xffff0000;
  52                 X86_ECX |= 0x0000;      /* Use video BIOS default */
  53                 res = 1;
  54                 break;
  55         case 0x5f51:
  56                 /*
  57                  * Hook to select active LFP configuration:
  58                  *  00h = No LVDS, VBIOS does not enable LVDS
  59                  *  01h = Int-LVDS, LFP driven by integrated LVDS decoder
  60                  *  02h = SDVO-LVDS, LFP driven by SDVO decoder
  61                  *  03h = eDP, LFP Driven by Int-DisplayPort encoder
  62                  */
  63                 X86_EAX &= 0xffff0000;
  64                 X86_EAX |= 0x005f;
  65                 X86_ECX &= 0xffff0000;
  66                 X86_ECX |= 0x0000; /* TODO: Make this configurable in NVRAM? */
  67                 res = 1;
  68                 break;
  69         case 0x5f40:
  70                 /*
  71                  * Boot Panel Type Hook:
  72                  *  BL(in): 00h = LFP, 01h = LFP2
  73                  *  CL(out): panel type id in table: 1..16
  74                  */
  75                 if (0 == (X86_EBX & 0xff)) {
  76                         X86_EAX &= 0xffff0000;
  77                         X86_EAX |= 0x015f;
  78                         res = 1;
  79                 } else if (1 == (X86_EBX & 0xff)) {
  80                         X86_EAX &= 0xffff0000;
  81                         X86_EAX |= 0x015f;
  82                         res = 1;
  83                 } else {
  84                         printk(BIOS_DEBUG,
  85                                "Unknown panel index %u "
  86                                "in INT15 function %04x!\n",
  87                                X86_EBX & 0xff, X86_EAX & 0xffff);
  88                 }
  89                 break;
  90         case 0x5f52:
  91                 /*
  92                  * Panel Color Depth:
  93                  *  00h = 18 bit
  94                  *  01h = 24 bit
  95                  */
  96                 X86_EAX &= 0xffff0000;
  97                 X86_EAX |= 0x005f;
  98                 X86_ECX &= 0xffff0000;
  99                 X86_ECX |= 0x0001;
 100                 res = 1;
 101                 break;
 102         case 0x5f14:
 103                 if ((X86_EBX & 0xffff) == 0x78f) {
 104                         /*
 105                          * Get Miscellaneous Status Hook:
 106                          *  bit 2: AC power active?
 107                          *  bit 1: lid closed?
 108                          *  bit 0: docked?
 109                          */
 110                         X86_EAX &= 0xffff0000;
 111                         X86_EAX |= 0x015f;
 112                         res = 1;
 113                 } else {
 114                         printk(BIOS_DEBUG,
 115                                "Unknown BX 0x%04x in INT15 function %04x!\n",
 116                                X86_EBX & 0xffff, X86_EAX & 0xffff);
 117                 }
 118                 break;
 119         case 0x5f49:
 120                 /*
 121                  * Get Inverter Type and Polarity:
 122                  *  EBX: backlight control brightness: 0..255
 123                  *  ECX:
 124                  *   0 = Enable PWM inverted, 2 = Enable PWM
 125                  *   1 = Enable I2C inverted, 3 = Enable I2C
 126                  */
 127                 X86_EAX &= 0xffff0000;
 128                 X86_EAX |= 0x015f;
 129                 res = 1;
 130                 break;
 131         default:
 132                 printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
 133                        X86_EAX & 0xffff);
 134                 break;
 135         }
 136         return res;
 137 }
 138 #endif
 139
 140
 141 static void mainboard_enable(struct device *dev)
 142 {
 143 #if CONFIG(PCI_OPTION_ROM_RUN_YABEL) || \
 144         CONFIG(PCI_OPTION_ROM_RUN_REALMODE)
 145         /* Install custom int15 handler for VGA OPROM */
 146         mainboard_interrupt_handlers(0x15, &int15_handler);
 147 #endif
 148         unsigned int disable = get_uint_option("ethernet1", 0);
 149         if (disable) {
 150                 struct device *nic = pcidev_on_root(0x1c, 2);
 151                 if (nic) {
 152                         printk(BIOS_DEBUG, "DISABLE FIRST NIC!\n");
 153                         nic->enabled = 0;
 154                 }
 155         }
 156         disable = get_uint_option("ethernet2", 0);
 157         if (disable) {
 158                 struct device *nic = pcidev_on_root(0x1c, 3);
 159                 if (nic) {
 160                         printk(BIOS_DEBUG, "DISABLE SECOND NIC!\n");
 161                         nic->enabled = 0;
 162                 }
 163         }
 164 }
 165
 166 struct chip_operations mainboard_ops = {
 167         .enable_dev = mainboard_enable,
 168 };