/* 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  waituartcts,rd,rx
        .endm

        .macro  waituarttxrdy,rd,rx
1001:   ldr     \rd, [\rx, #MESON_AO_UART_STATUS]
        tst     \rd, #MESON_AO_UART_TX_FIFO_FULL
        bne     1001b
        .endm