Commit | Line | Data |
---|---|---|
494e492d UKK |
1 | /* |
2 | * Copyright (C) 2013 Pengutronix | |
3 | * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> | |
4 | * | |
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. | |
8 | */ | |
9 | ||
10 | #define UARTn_CMD 0x000c | |
11 | #define UARTn_CMD_TXEN 0x0004 | |
12 | ||
13 | #define UARTn_STATUS 0x0010 | |
14 | #define UARTn_STATUS_TXC 0x0020 | |
15 | #define UARTn_STATUS_TXBL 0x0040 | |
16 | ||
17 | #define UARTn_TXDATA 0x0034 | |
18 | ||
7505f042 | 19 | .macro addruart, rx, tmp, tmp2 |
494e492d UKK |
20 | ldr \rx, =(CONFIG_DEBUG_UART_PHYS) |
21 | ||
22 | /* | |
23 | * enable TX. The driver might disable it to save energy. We | |
24 | * don't care about disabling at the end as during debug power | |
25 | * consumption isn't that important. | |
26 | */ | |
27 | ldr \tmp, =(UARTn_CMD_TXEN) | |
28 | str \tmp, [\rx, #UARTn_CMD] | |
29 | .endm | |
30 | ||
31 | .macro senduart,rd,rx | |
32 | strb \rd, [\rx, #UARTn_TXDATA] | |
33 | .endm | |
34 | ||
35 | .macro waituart,rd,rx | |
36 | 1001: ldr \rd, [\rx, #UARTn_STATUS] | |
37 | tst \rd, #UARTn_STATUS_TXBL | |
38 | beq 1001b | |
39 | .endm | |
40 | ||
41 | .macro busyuart,rd,rx | |
42 | 1001: ldr \rd, [\rx, UARTn_STATUS] | |
43 | tst \rd, #UARTn_STATUS_TXC | |
44 | bne 1001b | |
45 | .endm |