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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/acpimmio.h>
#include <amdblocks/espi.h>
#include <amdblocks/i2c.h>
#include <amdblocks/lpc.h>
#include <amdblocks/pmlib.h>
#include <amdblocks/smbus.h>
#include <soc/i2c.h>
#include <soc/southbridge.h>
#include <soc/uart.h>
#include "chip.h"
/* Table to switch SCL pins to outputs to initially reset the I2C peripherals */
static const struct soc_i2c_scl_pin i2c_scl_pins[] = {
I2C_RESET_SCL_PIN(I2C0_SCL_PIN, GPIO_I2C0_SCL),
I2C_RESET_SCL_PIN(I2C1_SCL_PIN, GPIO_I2C1_SCL),
I2C_RESET_SCL_PIN(I2C2_SCL_PIN, GPIO_I2C2_SCL),
I2C_RESET_SCL_PIN(I2C3_SCL_PIN, GPIO_I2C3_SCL),
};
static void reset_i2c_peripherals(void)
{
const struct soc_amd_cezanne_config *cfg = config_of_soc();
struct soc_i2c_peripheral_reset_info reset_info;
reset_info.i2c_scl_reset_mask = cfg->i2c_scl_reset & GPIO_I2C_MASK;
reset_info.i2c_scl = i2c_scl_pins;
reset_info.num_pins = ARRAY_SIZE(i2c_scl_pins);
sb_reset_i2c_peripherals(&reset_info);
}
/* Before console init */
void fch_pre_init(void)
{
/* Enable_acpimmio_decode_pm04 to enable the ACPIMMIO decode which is needed to access
the GPIO registers. */
enable_acpimmio_decode_pm04();
/* Setup SPI base by calling lpc_early_init before setting up eSPI. */
lpc_early_init();
/* Setup eSPI to enable port80 routing if the board is using eSPI and the eSPI
interface hasn't already been set up in verstage on PSP */
if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI) && !CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK))
configure_espi_with_mb_hook();
fch_spi_early_init();
fch_smbus_init();
fch_enable_cf9_io();
fch_enable_legacy_io();
fch_disable_legacy_dma_io();
enable_aoac_devices();
reset_i2c_peripherals();
/*
* On reset Range_0 defaults to enabled. We want to start with a clean
* slate to not have things unexpectedly enabled.
*/
clear_uart_legacy_config();
if (CONFIG(AMD_SOC_CONSOLE_UART))
set_uart_config(CONFIG_UART_FOR_CONSOLE);
/* disable the keyboard reset function before mainboard GPIO setup */
if (CONFIG(DISABLE_KEYBOARD_RESET_PIN))
fch_disable_kb_rst();
}
/* After console init */
void fch_early_init(void)
{
pm_set_power_failure_state();
fch_print_pmxc0_status();
i2c_soc_early_init();
show_spi_speeds_and_modes();
if (CONFIG(DISABLE_SPI_FLASH_ROM_SHARING))
lpc_disable_spi_rom_sharing();
}
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