src/mainboard/intel/galileo/vboot.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <bootmode.h>
   4 #include <device/i2c_simple.h>
   5 #include <soc/i2c.h>
   6 #include <soc/reg_access.h>
   7 #include <spi_flash.h>
   8 #include <security/vboot/vboot_common.h>
   9 #include <security/vboot/vbnv.h>
  10
  11 #include "reg_access.h"
  12 #include "gen1.h"
  13 #include "gen2.h"
  14
  15 int get_recovery_mode_switch(void)
  16 {
  17         return 0;
  18 }
  19
  20 int get_write_protect_state(void)
  21 {
  22         /* Not write protected */
  23         return 0;
  24 }
  25
  26 void verstage_mainboard_init(void)
  27 {
  28         const struct reg_script *script;
  29
  30         /* Crypto Shield I2C Addresses:
  31          *
  32          * 0x29: AT97S3204T - TPM 1.2
  33          * 0x50: ATAES132 - AES-128
  34          * 0x60: ATECC108 - Elliptical Curve
  35          * 0x64: ATSHA204 - SHA-256
  36          * 0x68: DS3231M - RTC
  37          */
  38
  39         /* Determine the correct script for the board */
  40         if (CONFIG(GALILEO_GEN2))
  41                 script = gen2_i2c_init;
  42         else
  43                 /* Determine which I2C address is in use */
  44                 script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL)
  45                         & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO)
  46                         ? gen1_i2c_0x20_init : gen1_i2c_0x21_init;
  47
  48         /* Direct the I2C SDA and SCL signals to the Arduino connector */
  49         reg_script_run(script);
  50 }
  51
  52 void __weak vboot_platform_prepare_reboot(void)
  53 {
  54         const struct reg_script *script;
  55
  56         /* Crypto Shield I2C Addresses:
  57          *
  58          * 0x29: AT97S3204T - TPM 1.2
  59          * 0x50: ATAES132 - AES-128
  60          * 0x60: ATECC108 - Elliptical Curve
  61          * 0x64: ATSHA204 - SHA-256
  62          * 0x68: DS3231M - RTC
  63          */
  64
  65         /* Determine the correct script for the board */
  66         if (CONFIG(GALILEO_GEN2))
  67                 script = gen2_tpm_reset;
  68         else
  69                 /* Determine which I2C address is in use */
  70                 script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL)
  71                         & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO)
  72                         ? gen1_tpm_reset_0x20 : gen1_tpm_reset_0x21;
  73
  74         /* Reset the TPM */
  75         reg_script_run(script);
  76 }
  77
  78 int vbnv_cmos_failed(void)
  79 {
  80         /* Indicate no failure until RTC failure bits are supported. */
  81         return 0;
  82 }