src/soc/amd/mendocino/early_fch.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* TODO: Check if this is still correct */
   4
   5 #include <amdblocks/acpimmio.h>
   6 #include <amdblocks/aoac.h>
   7 #include <amdblocks/espi.h>
   8 #include <amdblocks/i2c.h>
   9 #include <amdblocks/lpc.h>
  10 #include <amdblocks/pmlib.h>
  11 #include <amdblocks/smbus.h>
  12 #include <amdblocks/stb.h>
  13 #include <amdblocks/uart.h>
  14 #include <soc/i2c.h>
  15 #include <soc/southbridge.h>
  16 #include <soc/uart.h>
  17
  18 #include "chip.h"
  19
  20 /* Before console init */
  21 void fch_pre_init(void)
  22 {
  23         /* Enable_acpimmio_decode_pm04 to enable the ACPIMMIO decode which is needed to access
  24            the GPIO registers. */
  25         enable_acpimmio_decode_pm04();
  26         /* Setup SPI base by calling lpc_early_init before setting up eSPI. */
  27         lpc_early_init();
  28
  29         /* Setup eSPI to enable port80 routing if the board is using eSPI and the eSPI
  30            interface hasn't already been set up in verstage on PSP */
  31         if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI) && !CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK))
  32                 configure_espi_with_mb_hook();
  33
  34         fch_spi_early_init();
  35         fch_smbus_init();
  36         fch_enable_cf9_io();
  37         fch_enable_legacy_io();
  38         fch_disable_legacy_dma_io();
  39         enable_aoac_devices();
  40
  41         /*
  42          * On reset Range_0 defaults to enabled. We want to start with a clean
  43          * slate to not have things unexpectedly enabled.
  44          */
  45         clear_uart_legacy_config();
  46
  47         if (CONFIG(AMD_SOC_CONSOLE_UART))
  48                 set_uart_config(CONFIG_UART_FOR_CONSOLE);
  49
  50         /* disable the keyboard reset function before mainboard GPIO setup */
  51         if (CONFIG(DISABLE_KEYBOARD_RESET_PIN))
  52                 fch_disable_kb_rst();
  53 }
  54
  55 /* After console init */
  56 void fch_early_init(void)
  57 {
  58         if (CONFIG(WRITE_STB_BUFFER_TO_CONSOLE))
  59                 write_stb_to_console();
  60
  61         reset_i2c_peripherals();
  62         pm_set_power_failure_state();
  63         fch_print_pmxc0_status();
  64         i2c_soc_early_init();
  65         show_spi_speeds_and_modes();
  66
  67         if (CONFIG(DISABLE_SPI_FLASH_ROM_SHARING))
  68                 lpc_disable_spi_rom_sharing();
  69 }