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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2014 Carlo Caione
- * Carlo Caione <[email protected]>
- */
- #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
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