1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Debugging macro include header for Conexant Digicolor USART
*
* Copyright (C) 2014 Paradox Innovation Ltd.
*/
#define UA0_STATUS 0x0742
#define UA0_EMI_REC 0x0744
#define UA0_STATUS_TX_READY 0x40
#ifdef CONFIG_DEBUG_UART_PHYS
.macro addruart, rp, rv, tmp
ldr \rp, =CONFIG_DEBUG_UART_PHYS
ldr \rv, =CONFIG_DEBUG_UART_VIRT
.endm
#endif
.macro senduart,rd,rx
strb \rd, [\rx, #UA0_EMI_REC]
.endm
.macro waituartcts,rd,rx
.endm
.macro waituarttxrdy,rd,rx
.endm
.macro busyuart,rd,rx
1001: ldrb \rd, [\rx, #UA0_STATUS]
tst \rd, #UA0_STATUS_TX_READY
beq 1001b
.endm
|
