/* SPDX-License-Identifier: GPL-2.0 *//* * Copyright (C) STMicroelectronics SA 2017 - All Rights Reserved * Author:   Gerald Baeza <gerald.baeza@st.com> for STMicroelectronics. */ #ifdef CONFIG_STM32F4_DEBUG_UART#define STM32_USART_SR_OFF		0x00#define STM32_USART_TDR_OFF		0x04#endif #if defined(CONFIG_STM32F7_DEBUG_UART) || defined(CONFIG_STM32H7_DEBUG_UART) || \	defined(CONFIG_STM32MP1_DEBUG_UART)#define STM32_USART_SR_OFF		0x1C#define STM32_USART_TDR_OFF		0x28#endif #define STM32_USART_TC			(1 << 6)	/* Tx complete       */#define STM32_USART_TXE			(1 << 7)	/* Tx data reg empty */ .macro	addruart, rp, rv, tmp	ldr	\rp, =CONFIG_DEBUG_UART_PHYS @ physical base	ldr	\rv, =CONFIG_DEBUG_UART_VIRT @ virt base.endm .macro  senduart,rd,rx	strb    \rd, [\rx, #STM32_USART_TDR_OFF].endm .macro	waituartcts,rd,rx.endm .macro  waituarttxrdy,rd,rx1001:	ldr	\rd, [\rx, #(STM32_USART_SR_OFF)]	@ Read Status Register	tst	\rd, #STM32_USART_TXE			@ TXE = 1 = tx empty	beq	1001b.endm .macro  busyuart,rd,rx1001:	ldr	\rd, [\rx, #(STM32_USART_SR_OFF)]	@ Read Status Register	tst	\rd, #STM32_USART_TC			@ TC = 1 = tx complete	beq	1001b.endm