/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2013 Pengutronix * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> */ #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,rx1001:		ldr	\rd, [\rx, #UARTn_STATUS]		tst	\rd, #UARTn_STATUS_TXBL		beq	1001b		.endm 		.macro	busyuart,rd,rx1001:		ldr	\rd, [\rx, UARTn_STATUS]		tst	\rd, #UARTn_STATUS_TXC		bne	1001b		.endm