src/mainboard/google/drallion/ramstage.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright 2018 Google LLC
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/acpi.h>
  17 #include <boardid.h>
  18 #include <drivers/vpd/vpd.h>
  19 #include <smbios.h>
  20 #include <soc/gpio.h>
  21 #include <soc/ramstage.h>
  22 #include <variant/gpio.h>
  23 #include <vendorcode/google/chromeos/chromeos.h>
  24
  25 #define VPD_KEY_SYSTEM_SERIAL           "serial_number"
  26 #define VPD_KEY_MAINBOARD_SERIAL        "mlb_serial_number"
  27 #define VPD_SERIAL_LEN                  64
  28
  29 const char *smbios_system_serial_number(void)
  30 {
  31         static char serial[VPD_SERIAL_LEN];
  32         if (vpd_gets(VPD_KEY_SYSTEM_SERIAL, serial, VPD_SERIAL_LEN, VPD_RO))
  33                 return serial;
  34         return "";
  35 }
  36
  37 const char *smbios_mainboard_serial_number(void)
  38 {
  39         static char serial[VPD_SERIAL_LEN];
  40         if (vpd_gets(VPD_KEY_MAINBOARD_SERIAL, serial, VPD_SERIAL_LEN, VPD_RO))
  41                 return serial;
  42         return "";
  43 }
  44
  45 /* mainboard silk screen shows DIMM-A and DIMM-B */
  46 void smbios_fill_dimm_locator(const struct dimm_info *dimm,
  47         struct smbios_type17 *t)
  48 {
  49         switch (dimm->channel_num) {
  50         case 0:
  51                 t->device_locator = smbios_add_string(t->eos, "DIMM-A");
  52                 break;
  53         case 1:
  54                 t->device_locator = smbios_add_string(t->eos, "DIMM-B");
  55                 break;
  56         default:
  57                 t->device_locator = smbios_add_string(t->eos, "UNKNOWN");
  58                 break;
  59         }
  60 }
  61
  62 static void mainboard_init(void *chip_info)
  63 {
  64         const struct pad_config *gpio_table;
  65         size_t num_gpios;
  66
  67         gpio_table = variant_gpio_table(&num_gpios);
  68         cnl_configure_pads(gpio_table, num_gpios);
  69 }
  70
  71 static void mainboard_enable(struct device *dev)
  72 {
  73         dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
  74 }
  75
  76 struct chip_operations mainboard_ops = {
  77         .init = mainboard_init,
  78         .enable_dev = mainboard_enable,
  79 };