1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #include <bootblock_common.h> 4 #include <northbridge/intel/sandybridge/raminit.h> 5 #include <southbridge/intel/bd82x6x/pch.h> 6 #include <superio/ite/common/ite.h> 7 #include <superio/ite/it8728f/it8728f.h> 8 9 #define SUPERIO_GPIO PNP_DEV(0x2e, IT8728F_GPIO) 10 #define SERIAL_DEV PNP_DEV(0x2e, 0x01) 11 bootblock_mainboard_early_init(void)12void bootblock_mainboard_early_init(void) 13 { 14 if (!CONFIG(NO_UART_ON_SUPERIO)) { 15 /* Enable serial port */ 16 ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); 17 } 18 19 /* Disable SIO WDT which kicks in DualBIOS */ 20 ite_reg_write(SUPERIO_GPIO, 0xEF, 0x7E); 21 } 22