| // Copyright 2018 The Fuchsia Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| #include <stdint.h> | |
| #include "debug.h" | |
| #define S905_UART_WFIFO (0x0) | |
| #define S905_UART_STATUS (0xc) | |
| #define S905_UART_STATUS_TXFULL (1 << 21) | |
| #define UARTREG(reg) (*(volatile uint32_t*)(0xff803000 + (reg))) | |
| void uart_pputc(char c) { | |
| while (UARTREG(S905_UART_STATUS) & S905_UART_STATUS_TXFULL) | |
| ; | |
| UARTREG(S905_UART_WFIFO) = c; | |
| } |