[mirror_ubuntu-hirsute-kernel.git] / arch / arm / include / debug / meson.S

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2014 Carlo Caione
 * Carlo Caione <carlo@caione.org>
 */

#define MESON_AO_UART_WFIFO		0x0
#define MESON_AO_UART_STATUS		0xc

#define MESON_AO_UART_TX_FIFO_EMPTY	(1 << 22)
#define MESON_AO_UART_TX_FIFO_FULL	(1 << 21)

	.macro	addruart, rp, rv, tmp
	ldr	\rp, =(CONFIG_DEBUG_UART_PHYS)		@ physical
	ldr	\rv, =(CONFIG_DEBUG_UART_VIRT)		@ virtual
	.endm

	.macro	senduart,rd,rx
	str	\rd, [\rx, #MESON_AO_UART_WFIFO]
	.endm

	.macro	busyuart,rd,rx
1002:	ldr	\rd, [\rx, #MESON_AO_UART_STATUS]
	tst	\rd, #MESON_AO_UART_TX_FIFO_EMPTY
	beq	1002b
	.endm

	.macro	waituart,rd,rx
1001:	ldr	\rd, [\rx, #MESON_AO_UART_STATUS]
	tst	\rd, #MESON_AO_UART_TX_FIFO_FULL
	bne	1001b
	.endm
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
d8a00916 CC	2	/*
	3	* Copyright (C) 2014 Carlo Caione
	4	* Carlo Caione <carlo@caione.org>
d8a00916 CC	5	*/
	6
	7	#define MESON_AO_UART_WFIFO 0x0
	8	#define MESON_AO_UART_STATUS 0xc
	9
	10	#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22)
	11	#define MESON_AO_UART_TX_FIFO_FULL (1 << 21)
	12
	13	.macro addruart, rp, rv, tmp
	14	ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical
	15	ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual
	16	.endm
	17
	18	.macro senduart,rd,rx
	19	str \rd, [\rx, #MESON_AO_UART_WFIFO]
	20	.endm
	21
	22	.macro busyuart,rd,rx
	23	1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
	24	tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY
	25	beq 1002b
	26	.endm
	27
	28	.macro waituart,rd,rx
	29	1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
	30	tst \rd, #MESON_AO_UART_TX_FIFO_FULL
	31	bne 1001b
	32	.endm