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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536/* 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,rx1002: 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,rx1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS] tst \rd, #MESON_AO_UART_TX_FIFO_FULL bne 1001b .endm