2 * Copyright (C) 2014 Carlo Caione
3 * Carlo Caione <carlo@caione.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #define MESON_AO_UART_WFIFO 0x0
11 #define MESON_AO_UART_STATUS 0xc
13 #define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22)
14 #define MESON_AO_UART_TX_FIFO_FULL (1 << 21)
16 .macro addruart, rp, rv, tmp
17 ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical
18 ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual
22 str \rd, [\rx, #MESON_AO_UART_WFIFO]
26 1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
27 tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY
32 1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
33 tst \rd, #MESON_AO_UART_TX_FIFO_FULL