162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (C) 2014 Carlo Caione 462306a36Sopenharmony_ci * Carlo Caione <carlo@caione.org> 562306a36Sopenharmony_ci */ 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#define MESON_AO_UART_WFIFO 0x0 862306a36Sopenharmony_ci#define MESON_AO_UART_STATUS 0xc 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22) 1162306a36Sopenharmony_ci#define MESON_AO_UART_TX_FIFO_FULL (1 << 21) 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci .macro addruart, rp, rv, tmp 1462306a36Sopenharmony_ci ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical 1562306a36Sopenharmony_ci ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual 1662306a36Sopenharmony_ci .endm 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci .macro senduart,rd,rx 1962306a36Sopenharmony_ci str \rd, [\rx, #MESON_AO_UART_WFIFO] 2062306a36Sopenharmony_ci .endm 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci .macro busyuart,rd,rx 2362306a36Sopenharmony_ci1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS] 2462306a36Sopenharmony_ci tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY 2562306a36Sopenharmony_ci beq 1002b 2662306a36Sopenharmony_ci .endm 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci .macro waituartcts,rd,rx 2962306a36Sopenharmony_ci .endm 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci .macro waituarttxrdy,rd,rx 3262306a36Sopenharmony_ci1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS] 3362306a36Sopenharmony_ci tst \rd, #MESON_AO_UART_TX_FIFO_FULL 3462306a36Sopenharmony_ci bne 1001b 3562306a36Sopenharmony_ci .endm 36