src/mainboard/google/link/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <types.h>
   4 #include <device/device.h>
   5 #include <device/pci_ops.h>
   6 #include <ec/ec.h>
   7 #include <console/console.h>
   8 #if CONFIG(VGA_ROM_RUN)
   9 #include <x86emu/x86emu.h>
  10 #endif
  11 #include <arch/io.h>
  12 #include <arch/interrupt.h>
  13 #include "onboard.h"
  14 #include "ec.h"
  15 #include <southbridge/intel/bd82x6x/pch.h>
  16 #include <southbridge/intel/common/gpio.h>
  17 #include <smbios.h>
  18 #include <ec/google/chromeec/ec.h>
  19
  20 #if CONFIG(VGA_ROM_RUN)
  21 static int int15_handler(void)
  22 {
  23         int res = 0;
  24
  25         printk(BIOS_DEBUG, "%s: INT15 function %04x!\n",
  26                         __func__, X86_AX);
  27
  28         switch (X86_AX) {
  29         case 0x5f34:
  30                 /*
  31                  * Set Panel Fitting Hook:
  32                  *  bit 2 = Graphics Stretching
  33                  *  bit 1 = Text Stretching
  34                  *  bit 0 = Centering (do not set with bit1 or bit2)
  35                  *  0     = video BIOS default
  36                  */
  37                 X86_AX = 0x005f;
  38                 X86_CL = 0x00; /* Use video BIOS default */
  39                 res = 1;
  40                 break;
  41         case 0x5f35:
  42                 /*
  43                  * Boot Display Device Hook:
  44                  *  bit 0 = CRT
  45                  *  bit 1 = TV (eDP)
  46                  *  bit 2 = EFP
  47                  *  bit 3 = LFP
  48                  *  bit 4 = CRT2
  49                  *  bit 5 = TV2 (eDP)
  50                  *  bit 6 = EFP2
  51                  *  bit 7 = LFP2
  52                  */
  53                 X86_AX = 0x005f;
  54                 X86_CX = 0x0000; /* Use video BIOS default */
  55                 res = 1;
  56                 break;
  57         case 0x5f51:
  58                 /*
  59                  * Hook to select active LFP configuration:
  60                  *  00h = No LVDS, VBIOS does not enable LVDS
  61                  *  01h = Int-LVDS, LFP driven by integrated LVDS decoder
  62                  *  02h = SVDO-LVDS, LFP driven by SVDO decoder
  63                  *  03h = eDP, LFP Driven by Int-DisplayPort encoder
  64                  */
  65                 X86_AX = 0x005f;
  66                 X86_CX = 0x0003; /* eDP */
  67                 res = 1;
  68                 break;
  69         case 0x5f70:
  70                 switch (X86_CH) {
  71                 case 0:
  72                         /* Get Mux */
  73                         X86_AX = 0x005f;
  74                         X86_CX = 0x0000;
  75                         res = 1;
  76                         break;
  77                 case 1:
  78                         /* Set Mux */
  79                         X86_AX = 0x005f;
  80                         X86_CX = 0x0000;
  81                         res = 1;
  82                         break;
  83                 case 2:
  84                         /* Get SG/Non-SG mode */
  85                         X86_AX = 0x005f;
  86                         X86_CX = 0x0000;
  87                         res = 1;
  88                         break;
  89                 default:
  90                         /* Interrupt was not handled */
  91                         printk(BIOS_DEBUG, "Unknown INT15 5f70 function: 0x%02x\n",
  92                                 X86_CH);
  93                         break;
  94                 }
  95                 break;
  96         case 0x5fac:
  97                 res = 1;
  98                 break;
  99         default:
 100                 printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
 101                 break;
 102         }
 103         return res;
 104 }
 105 #endif
 106
 107 static void mainboard_init(struct device *dev)
 108 {
 109         uint32_t board_version = 0;
 110
 111         /* Initialize the Embedded Controller */
 112         mainboard_ec_init();
 113
 114         google_chromeec_get_board_version(&board_version);
 115         if (board_version == 0) {
 116                 /* If running on proto1 - enable reversion of gpio11. */
 117                 u32 gpio_inv;
 118                 u16 gpio_base = pci_read_config16
 119                         (pcidev_on_root(0x1f, 0), GPIO_BASE) &
 120                         0xfffc;
 121                 u16 gpio_inv_addr = gpio_base + GPI_INV;
 122                 gpio_inv = inl(gpio_inv_addr);
 123                 outl(gpio_inv | (1 << 11), gpio_inv_addr);
 124         }
 125 }
 126
 127 static int link_onboard_smbios_data(struct device *dev, int *handle,
 128                                      unsigned long *current)
 129 {
 130         int len = 0;
 131
 132         len += smbios_write_type41(
 133                 current, handle,
 134                 BOARD_LIGHTSENSOR_NAME,         /* name */
 135                 BOARD_LIGHTSENSOR_IRQ,          /* instance */
 136                 0,                              /* segment */
 137                 BOARD_LIGHTSENSOR_I2C_ADDR,     /* bus */
 138                 0,                              /* device */
 139                 0,                              /* function */
 140                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 141
 142         len += smbios_write_type41(
 143                 current, handle,
 144                 BOARD_TRACKPAD_NAME,            /* name */
 145                 BOARD_TRACKPAD_IRQ,             /* instance */
 146                 0,                              /* segment */
 147                 BOARD_TRACKPAD_I2C_ADDR,        /* bus */
 148                 0,                              /* device */
 149                 0,                              /* function */
 150                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 151
 152         len += smbios_write_type41(
 153                 current, handle,
 154                 BOARD_TOUCHSCREEN_NAME,         /* name */
 155                 BOARD_TOUCHSCREEN_IRQ,          /* instance */
 156                 0,                              /* segment */
 157                 BOARD_TOUCHSCREEN_I2C_ADDR,     /* bus */
 158                 0,                              /* device */
 159                 0,                              /* function */
 160                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 161
 162         return len;
 163 }
 164
 165 static void mainboard_enable(struct device *dev)
 166 {
 167         dev->ops->init = mainboard_init;
 168         dev->ops->get_smbios_data = link_onboard_smbios_data;
 169 #if CONFIG(VGA_ROM_RUN)
 170         /* Install custom int15 handler for VGA OPROM */
 171         mainboard_interrupt_handlers(0x15, &int15_handler);
 172 #endif
 173 }
 174
 175 struct chip_operations mainboard_ops = {
 176         .enable_dev = mainboard_enable,
 177 };