src/mainboard/lenovo/s230u/early_init.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/pci_ops.h>
   4 #include <console/console.h>
   5 #include <northbridge/intel/sandybridge/raminit.h>
   6 #include <southbridge/intel/bd82x6x/pch.h>
   7 #include <southbridge/intel/common/gpio.h>
   8 #include "ec.h"
   9
  10 void mainboard_pch_lpc_setup(void)
  11 {
  12         /* Memory map KB9012 EC registers */
  13         pci_write_config32(
  14                 PCH_LPC_DEV, LGMR,
  15                 CONFIG_EC_BASE_ADDRESS | 1);
  16         pci_write_config16(PCH_LPC_DEV, BIOS_DEC_EN1, 0xffc0);
  17
  18         /* Enable external USB port power. */
  19         if (CONFIG(USBDEBUG))
  20                 ec_mm_set_bit(0x3b, 4);
  21 }
  22
  23 static const char *mainboard_spd_names[9] = {
  24         "ELPIDA 4GB",
  25         "SAMSUNG 4GB",
  26         "HYNIX 4GB",
  27         "ELPIDA 8GB",
  28         "SAMSUNG 8GB",
  29         "HYNIX 8GB",
  30         "ELPIDA 2GB",
  31         "SAMSUNG 2GB",
  32         "HYNIX 2GB",
  33 };
  34
  35 static unsigned int get_spd_index(void)
  36 {
  37         const int spd_gpios[] = {71, 70, 16, 48, -1};
  38
  39         unsigned int spd_index = get_gpios(spd_gpios);
  40         if (spd_index >= ARRAY_SIZE(mainboard_spd_names)) {
  41                 /* Fallback to pessimistic 2GB image (ELPIDA 2GB) */
  42                 spd_index = 6;
  43         }
  44
  45         return spd_index;
  46 }
  47
  48 void mb_get_spd_map(struct spd_info *spdi)
  49 {
  50         unsigned int spd_index = get_spd_index();
  51
  52         printk(BIOS_INFO, "SPD index %d (%s)\n",
  53                 spd_index, mainboard_spd_names[spd_index]);
  54
  55         /* C0S0 is a soldered RAM with no real SPD. Use stored SPD. */
  56         spdi->addresses[0] = SPD_MEMORY_DOWN;
  57         spdi->spd_index = spd_index;
  58 }