src/mainboard/google/samus/romstage.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2007-2010 coresystems GmbH
   5  * Copyright (C) 2014 Google Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <arch/acpi.h>
  18 #include <cbfs.h>
  19 #include <console/console.h>
  20 #include <string.h>
  21 #include <ec/google/chromeec/ec.h>
  22 #include <soc/cpu.h>
  23 #include <soc/gpio.h>
  24 #include <soc/pei_data.h>
  25 #include <soc/pei_wrapper.h>
  26 #include <soc/pm.h>
  27 #include <soc/romstage.h>
  28 #include <mainboard/google/samus/spd/spd.h>
  29 #include <mainboard/google/samus/gpio.h>
  30 #include <ec/google/chromeec/ec.h>
  31 #include "board_version.h"
  32
  33 void mainboard_romstage_entry(struct romstage_params *rp)
  34 {
  35         struct pei_data pei_data;
  36
  37         post_code(0x31);
  38
  39         if (rp->power_state->prev_sleep_state != ACPI_S3)
  40                 google_chromeec_kbbacklight(100);
  41
  42         printk(BIOS_INFO, "MLB: board version %s\n", samus_board_version());
  43
  44         /* Ensure the EC and PD are in the right mode for recovery */
  45         google_chromeec_early_init();
  46
  47         /* Initialize GPIOs */
  48         init_gpios(mainboard_gpio_config);
  49
  50         /* Fill out PEI DATA */
  51         memset(&pei_data, 0, sizeof(pei_data));
  52         mainboard_fill_pei_data(&pei_data);
  53         mainboard_fill_spd_data(&pei_data);
  54         rp->pei_data = &pei_data;
  55
  56         /* Initalize memory */
  57         romstage_common(rp);
  58
  59         /* Bring SSD out of reset */
  60         set_gpio(SAMUS_GPIO_SSD_RESET_L, GPIO_OUT_HIGH);
  61
  62         /*
  63          * Enable PP3300_AUTOBAHN_EN after initial GPIO setup
  64          * to prevent possible brownout.
  65          */
  66         set_gpio(SAMUS_GPIO_PP3300_AUTOBAHN_EN, GPIO_OUT_HIGH);
  67 }