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 <console/console.h>
   7 #if CONFIG(VGA_ROM_RUN)
   8 #include <x86emu/x86emu.h>
   9 #endif
  10 #include <arch/io.h>
  11 #include <arch/interrupt.h>
  12 #include "onboard.h"
  13 #include "ec.h"
  14 #include <southbridge/intel/bd82x6x/pch.h>
  15 #include <southbridge/intel/common/gpio.h>
  16 #include <smbios.h>
  17 #include <ec/google/chromeec/ec.h>
  18
  19 #if CONFIG(VGA_ROM_RUN)
  20 static int int15_handler(void)
  21 {
  22         int res = 0;
  23
  24         printk(BIOS_DEBUG, "%s: INT15 function %04x!\n",
  25                         __func__, X86_AX);
  26
  27         switch (X86_AX) {
  28         case 0x5f34:
  29                 /*
  30                  * Set Panel Fitting Hook:
  31                  *  bit 2 = Graphics Stretching
  32                  *  bit 1 = Text Stretching
  33                  *  bit 0 = Centering (do not set with bit1 or bit2)
  34                  *  0     = video BIOS default
  35                  */
  36                 X86_AX = 0x005f;
  37                 X86_CL = 0x00; /* Use video BIOS default */
  38                 res = 1;
  39                 break;
  40         case 0x5f35:
  41                 /*
  42                  * Boot Display Device Hook:
  43                  *  bit 0 = CRT
  44                  *  bit 1 = TV (eDP)
  45                  *  bit 2 = EFP
  46                  *  bit 3 = LFP
  47                  *  bit 4 = CRT2
  48                  *  bit 5 = TV2 (eDP)
  49                  *  bit 6 = EFP2
  50                  *  bit 7 = LFP2
  51                  */
  52                 X86_AX = 0x005f;
  53                 X86_CX = 0x0000; /* Use video BIOS default */
  54                 res = 1;
  55                 break;
  56         case 0x5f51:
  57                 /*
  58                  * Hook to select active LFP configuration:
  59                  *  00h = No LVDS, VBIOS does not enable LVDS
  60                  *  01h = Int-LVDS, LFP driven by integrated LVDS decoder
  61                  *  02h = SVDO-LVDS, LFP driven by SVDO decoder
  62                  *  03h = eDP, LFP Driven by Int-DisplayPort encoder
  63                  */
  64                 X86_AX = 0x005f;
  65                 X86_CX = 0x0003; /* eDP */
  66                 res = 1;
  67                 break;
  68         case 0x5f70:
  69                 switch (X86_CH) {
  70                 case 0:
  71                         /* Get Mux */
  72                         X86_AX = 0x005f;
  73                         X86_CX = 0x0000;
  74                         res = 1;
  75                         break;
  76                 case 1:
  77                         /* Set Mux */
  78                         X86_AX = 0x005f;
  79                         X86_CX = 0x0000;
  80                         res = 1;
  81                         break;
  82                 case 2:
  83                         /* Get SG/Non-SG mode */
  84                         X86_AX = 0x005f;
  85                         X86_CX = 0x0000;
  86                         res = 1;
  87                         break;
  88                 default:
  89                         /* Interrupt was not handled */
  90                         printk(BIOS_DEBUG, "Unknown INT15 5f70 function: 0x%02x\n",
  91                                 X86_CH);
  92                         break;
  93                 }
  94                 break;
  95         case 0x5fac:
  96                 res = 1;
  97                 break;
  98         default:
  99                 printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
 100                 break;
 101         }
 102         return res;
 103 }
 104 #endif
 105
 106 static void mainboard_init(struct device *dev)
 107 {
 108         uint32_t board_version = 0;
 109
 110         /* Initialize the Embedded Controller */
 111         link_ec_init();
 112
 113         google_chromeec_get_board_version(&board_version);
 114         if (board_version == 0) {
 115                 /* If running on proto1 - enable reversion of gpio11. */
 116                 u32 gpio_inv;
 117                 u16 gpio_base = pci_read_config16
 118                         (pcidev_on_root(0x1f, 0), GPIO_BASE) &
 119                         0xfffc;
 120                 u16 gpio_inv_addr = gpio_base + GPI_INV;
 121                 gpio_inv = inl(gpio_inv_addr);
 122                 outl(gpio_inv | (1 << 11), gpio_inv_addr);
 123         }
 124 }
 125
 126 static int link_onboard_smbios_data(struct device *dev, int *handle,
 127                                      unsigned long *current)
 128 {
 129         int len = 0;
 130
 131         len += smbios_write_type41(
 132                 current, handle,
 133                 BOARD_LIGHTSENSOR_NAME,         /* name */
 134                 BOARD_LIGHTSENSOR_IRQ,          /* instance */
 135                 0,                              /* segment */
 136                 BOARD_LIGHTSENSOR_I2C_ADDR,     /* bus */
 137                 0,                              /* device */
 138                 0,                              /* function */
 139                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 140
 141         len += smbios_write_type41(
 142                 current, handle,
 143                 BOARD_TRACKPAD_NAME,            /* name */
 144                 BOARD_TRACKPAD_IRQ,             /* instance */
 145                 0,                              /* segment */
 146                 BOARD_TRACKPAD_I2C_ADDR,        /* bus */
 147                 0,                              /* device */
 148                 0,                              /* function */
 149                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 150
 151         len += smbios_write_type41(
 152                 current, handle,
 153                 BOARD_TOUCHSCREEN_NAME,         /* name */
 154                 BOARD_TOUCHSCREEN_IRQ,          /* instance */
 155                 0,                              /* segment */
 156                 BOARD_TOUCHSCREEN_I2C_ADDR,     /* bus */
 157                 0,                              /* device */
 158                 0,                              /* function */
 159                 SMBIOS_DEVICE_TYPE_OTHER);      /* device type */
 160
 161         return len;
 162 }
 163
 164 // mainboard_enable is executed as first thing after
 165 // enumerate_buses().
 166
 167 static void mainboard_enable(struct device *dev)
 168 {
 169         dev->ops->init = mainboard_init;
 170         dev->ops->get_smbios_data = link_onboard_smbios_data;
 171 #if CONFIG(VGA_ROM_RUN)
 172         /* Install custom int15 handler for VGA OPROM */
 173         mainboard_interrupt_handlers(0x15, &int15_handler);
 174 #endif
 175 }
 176
 177 struct chip_operations mainboard_ops = {
 178         .enable_dev = mainboard_enable,
 179 };