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| Filename | /usr/src/linux-headers-3.13.0-24/arch/arm/include/debug/efm32.S |
| Size | 1.05 kb |
| Permission | rw-r--r-- |
| Owner | root : root |
| Create time | 27-Apr-2025 09:50 |
| Last modified | 20-Jan-2014 10:40 |
| Last accessed | 07-Jul-2025 07:16 |
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/*
* Copyright (C) 2013 Pengutronix
* Uwe Kleine-Koenig <[email protected]>
*
* 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
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
* Copyright (C) 2013 Pengutronix
* Uwe Kleine-Koenig <[email protected]>
*
* 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
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