| // 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 MX8_UTXD (0x40) | |
| #define MX8_UTS (0xB4) | |
| #define UTS_TXFULL (1 << 4) | |
| #define UARTREG(reg) (*(volatile uint32_t*)(0x30890000 + (reg))) | |
| void uart_pputc(char c) { | |
| while (UARTREG(MX8_UTS) & UTS_TXFULL) | |
| ; | |
| UARTREG(MX8_UTXD) = c; | |
| } |