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/* 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