From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arm/include/debug/meson.S | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 arch/arm/include/debug/meson.S (limited to 'arch/arm/include/debug/meson.S') diff --git a/arch/arm/include/debug/meson.S b/arch/arm/include/debug/meson.S new file mode 100644 index 000000000..7b60e4401 --- /dev/null +++ b/arch/arm/include/debug/meson.S @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2014 Carlo Caione + * Carlo Caione + */ + +#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 -- cgit v1.2.3