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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * arch/arm/include/debug/sti.S
4 *
5 * Debugging macro include header
6 * Copyright (C) 2013 STMicroelectronics (R&D) Limited.
7 */
8
9#define ASC_TX_BUF_OFF 0x04
10#define ASC_CTRL_OFF 0x0c
11#define ASC_STA_OFF 0x14
12
13#define ASC_STA_TX_FULL (1<<9)
14#define ASC_STA_TX_EMPTY (1<<1)
15
16
17 .macro addruart, rp, rv, tmp
18 ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
19 ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
20 .endm
21
22 .macro senduart,rd,rx
23 strb \rd, [\rx, #ASC_TX_BUF_OFF]
24 .endm
25
26 .macro waituartcts,rd,rx
27 .endm
28
29 .macro waituarttxrdy,rd,rx
301001: ldr \rd, [\rx, #ASC_STA_OFF]
31 tst \rd, #ASC_STA_TX_FULL
32 bne 1001b
33 .endm
34
35 .macro busyuart,rd,rx
361001: ldr \rd, [\rx, #ASC_STA_OFF]
37 tst \rd, #ASC_STA_TX_EMPTY
38 beq 1001b
39 .endm