18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright (C) 2014 Carlo Caione 48c2ecf20Sopenharmony_ci * Carlo Caione <carlo@caione.org> 58c2ecf20Sopenharmony_ci */ 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#define MESON_AO_UART_WFIFO 0x0 88c2ecf20Sopenharmony_ci#define MESON_AO_UART_STATUS 0xc 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22) 118c2ecf20Sopenharmony_ci#define MESON_AO_UART_TX_FIFO_FULL (1 << 21) 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci .macro addruart, rp, rv, tmp 148c2ecf20Sopenharmony_ci ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical 158c2ecf20Sopenharmony_ci ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual 168c2ecf20Sopenharmony_ci .endm 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci .macro senduart,rd,rx 198c2ecf20Sopenharmony_ci str \rd, [\rx, #MESON_AO_UART_WFIFO] 208c2ecf20Sopenharmony_ci .endm 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci .macro busyuart,rd,rx 238c2ecf20Sopenharmony_ci1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS] 248c2ecf20Sopenharmony_ci tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY 258c2ecf20Sopenharmony_ci beq 1002b 268c2ecf20Sopenharmony_ci .endm 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci .macro waituartcts,rd,rx 298c2ecf20Sopenharmony_ci .endm 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci .macro waituarttxrdy,rd,rx 328c2ecf20Sopenharmony_ci1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS] 338c2ecf20Sopenharmony_ci tst \rd, #MESON_AO_UART_TX_FIFO_FULL 348c2ecf20Sopenharmony_ci bne 1001b 358c2ecf20Sopenharmony_ci .endm 36