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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/include/debug/sti.S
*
* Debugging macro include header
* Copyright (C) 2013 STMicroelectronics (R&D) Limited.
*/
#define ASC_TX_BUF_OFF 0x04
#define ASC_CTRL_OFF 0x0c
#define ASC_STA_OFF 0x14
#define ASC_STA_TX_FULL (1<<9)
#define ASC_STA_TX_EMPTY (1<<1)
.macro addruart, rp, rv, tmp
ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
.endm
.macro senduart,rd,rx
strb \rd, [\rx, #ASC_TX_BUF_OFF]
.endm
.macro waituartcts,rd,rx
.endm
.macro waituarttxrdy,rd,rx
1001: ldr \rd, [\rx, #ASC_STA_OFF]
tst \rd, #ASC_STA_TX_FULL
bne 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #ASC_STA_OFF]
tst \rd, #ASC_STA_TX_EMPTY
beq 1001b
.endm