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 40