include/debug/digicolor.S

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Debugging macro include header for Conexant Digicolor USART
0004  *
0005  * Copyright (C) 2014 Paradox Innovation Ltd.
0006 */
0007
0008 #define UA0_STATUS  0x0742
0009 #define UA0_EMI_REC 0x0744
0010
0011 #define UA0_STATUS_TX_READY 0x40
0012
0013 #ifdef CONFIG_DEBUG_UART_PHYS
0014         .macro  addruart, rp, rv, tmp
0015         ldr \rp, =CONFIG_DEBUG_UART_PHYS
0016         ldr \rv, =CONFIG_DEBUG_UART_VIRT
0017         .endm
0018 #endif
0019
0020         .macro  senduart,rd,rx
0021         strb    \rd, [\rx, #UA0_EMI_REC]
0022         .endm
0023
0024         .macro  waituartcts,rd,rx
0025         .endm
0026
0027         .macro  waituarttxrdy,rd,rx
0028         .endm
0029
0030     .macro  busyuart,rd,rx
0031 1001:       ldrb    \rd, [\rx, #UA0_STATUS]
0032         tst \rd, #UA0_STATUS_TX_READY
0033         beq 1001b
0034         .endm