bootblock.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/acpimmio.h>
#include <amdblocks/acpimmio_legacy_gpio100.h>
#include <bootblock_common.h>
#include <console/console.h>
#include <superio/smsc/lpc47n217/lpc47n217.h>
 
#define SERIAL_DEV PNP_DEV(0x2e, LPC47N217_SP1)
 
void bootblock_mainboard_early_init(void)
{
        post_code(0x30);
        post_code(0x31);
 
        gpio_100_write8(0x1, 0x98);
 
        /* Disable PCI-PCI bridge and release GPIO32/33 for other uses. */
        pm_write8(0xea, 0x1);
 
        lpc47n217_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
}