2 * Arch specific code for mt7621 based boards, based on code for Ralink boards
4 * Copyright (C) 2018 Tobias Schramm <tobleminer@gmail.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
15 #define READREG(r) *(volatile uint32_t *)(r)
16 #define WRITEREG(r,v) *(volatile uint32_t *)(r) = v
18 #define KSEG1ADDR(_x) (((_x) & 0x1fffffff) | 0xa0000000)
20 #define UART_BASE 0xBE000C00
22 #define UART_TBR_OFFSET 0x00
23 #define UART_LSR_OFFSET 0x14
25 #define UART_LSR_TEMT (1 << 6)
27 #define UART_READ(r) READREG(UART_BASE + (r))
28 #define UART_WRITE(r,v) WRITEREG(UART_BASE + (r), (v))
30 void board_putc(int ch)
32 while (((UART_READ(UART_LSR_OFFSET)) & UART_LSR_TEMT) == 0);
33 UART_WRITE(UART_TBR_OFFSET, ch);
34 while (((UART_READ(UART_LSR_OFFSET)) & UART_LSR_TEMT) == 0);