ramstage.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootstate.h>
#include <console/console.h>
#include <device/i2c_simple.h>
#include <soc/ramstage.h>
#include <variant/gpio.h>
 
void mainboard_silicon_init_params(FSP_SIL_UPD *params)
{
        /* Configure pads prior to SiliconInit() in case there's any
         * dependencies during hardware initialization. */
        gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table));
        params->CdClock = 3;
}
 
static void ioexpander_init(void *unused)
{
        if (CONFIG(BOARD_INTEL_KBLRVP11))
                return;
 
        printk(BIOS_DEBUG, "Programming TCA6424A I/O expander\n");
 
        /* I/O Expander 1, Port 0 Data */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P0DOUT,
                0xF7);
        /* Port 0 Configuration */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P0CONF,
                0xE0);
 
        /* Port 1 Data */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P1DOUT,
                0x9E);
        /* Port 1 Configuration */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P1CONF,
                0x8C);
 
        /* Port 2 Data */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P2DOUT,
                0xDA);
        /* Port 2 Configuration */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P2CONF,
                0x08);
 
        /* I/O Expander 2, Port 0 Data */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_1_ADDR, IO_EXPANDER_P0DOUT,
                0xFF);
        /* Port 0 Configuration */
        i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_1_ADDR, IO_EXPANDER_P0CONF,
                0x00);
 
}
 
BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_EXIT, ioexpander_init, NULL);