src/mainboard/google/myst/variants/baseboard/fw_config.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootstate.h>
   4 #include <console/console.h>
   5 #include <fw_config.h>
   6 #include <gpio.h>
   7
   8 static const struct soc_amd_gpio fp_spi_gpio_table[] = {
   9         /* SOC_CLK_FPMCU_R */
  10         PAD_NF(GPIO_70, SPI2_CLK, PULL_NONE),
  11         /* SOC_CLK_FPMCU_R_L */
  12         PAD_NF(GPIO_75, SPI2_CS1_L, PULL_NONE),
  13         /* SPI_SOC_DO_FPMCU_DI_R */
  14         PAD_NF(GPIO_104, SPI2_DAT0, PULL_NONE),
  15         /* SPI_SOC_DI_FPMCU_DO_R */
  16         PAD_NF(GPIO_105, SPI2_DAT1, PULL_NONE),
  17 };
  18
  19 static const struct soc_amd_gpio fp_uart_gpio_table[] = {
  20         /* UART1_TXD / FPMCU */
  21         PAD_NF(GPIO_140, UART1_TXD, PULL_NONE),
  22         /* UART1_RXD  / FPMCU */
  23         PAD_NF(GPIO_142, UART1_RXD, PULL_NONE),
  24 };
  25
  26 static void fw_config_handle(void *unused)
  27 {
  28         if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(FP, DISABLED))) {
  29                 return;
  30         }
  31         if (fw_config_probe(FW_CONFIG(FP, SPI))) {
  32                 printk(BIOS_INFO, "Enabling SPI FP.\n");
  33                 gpio_configure_pads(fp_spi_gpio_table, ARRAY_SIZE(fp_spi_gpio_table));
  34         } else if (fw_config_probe(FW_CONFIG(FP, UART))) {
  35                 printk(BIOS_INFO, "Enabling UART FP.\n");
  36                 gpio_configure_pads(fp_uart_gpio_table, ARRAY_SIZE(fp_uart_gpio_table));
  37         } else {
  38                 printk(BIOS_INFO, "Invalid Fingerprint Setting, leaving FP disabled.");
  39         }
  40 }
  41
  42 BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);