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- /*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #define UARTn_CMD 0x000c
- #define UARTn_CMD_TXEN 0x0004
- #define UARTn_STATUS 0x0010
- #define UARTn_STATUS_TXC 0x0020
- #define UARTn_STATUS_TXBL 0x0040
- #define UARTn_TXDATA 0x0034
- .macro addruart, rx, tmp, tmp2
- ldr \rx, =(CONFIG_DEBUG_UART_PHYS)
- /*
- * enable TX. The driver might disable it to save energy. We
- * don't care about disabling at the end as during debug power
- * consumption isn't that important.
- */
- ldr \tmp, =(UARTn_CMD_TXEN)
- str \tmp, [\rx, #UARTn_CMD]
- .endm
- .macro senduart,rd,rx
- strb \rd, [\rx, #UARTn_TXDATA]
- .endm
- .macro waituart,rd,rx
- 1001: ldr \rd, [\rx, #UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXBL
- beq 1001b
- .endm
- .macro busyuart,rd,rx
- 1001: ldr \rd, [\rx, UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXC
- bne 1001b
- .endm
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