/* SPDX-License-Identifier: GPL-2.0-only */ #include <console/uart.h> #include <gpio.h> #include <boot/coreboot_tables.h> #include <soc/uart.h> void uart_fill_lb(void *data) { } static void set_tx(int line_state) { gpio_set(UART_TX_PIN, line_state); } void uart_init(unsigned int idx) { gpio_output(UART_TX_PIN, 1); } void uart_tx_byte(unsigned int idx, unsigned char data) { uart_bitbang_tx_byte(data, set_tx); } void uart_tx_flush(unsigned int idx) { /* unnecessary, PIO Tx means transaction is over when tx_byte returns */ } unsigned char uart_rx_byte(unsigned int idx) { return 0; /* not implemented */ }