1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Debugging macro include header
5 * Copyright (C) 2011 Xilinx
7 #define UART_CR_OFFSET 0x00 /* Control Register [8:0] */
8 #define UART_SR_OFFSET 0x2C /* Channel Status [11:0] */
9 #define UART_FIFO_OFFSET 0x30 /* FIFO [15:0] or [7:0] */
11 #define UART_SR_TXFULL 0x00000010 /* TX FIFO full */
12 #define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */
14 #define UART0_PHYS 0xE0000000
15 #define UART0_VIRT 0xF0800000
16 #define UART1_PHYS 0xE0001000
17 #define UART1_VIRT 0xF0801000
19 #if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
20 # define LL_UART_PADDR UART1_PHYS
21 # define LL_UART_VADDR UART1_VIRT
23 # define LL_UART_PADDR UART0_PHYS
24 # define LL_UART_VADDR UART0_VIRT
27 .macro addruart, rp, rv, tmp
28 ldr \rp, =LL_UART_PADDR @ physical
29 ldr \rv, =LL_UART_VADDR @ virtual
33 strb \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA
36 .macro waituartcts,rd,rx
39 .macro waituarttxrdy,rd,rx
40 1001: ldr \rd, [\rx, #UART_SR_OFFSET]
41 ARM_BE8( rev \rd, \rd )
42 tst \rd, #UART_SR_TXEMPTY
47 1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register
48 ARM_BE8( rev \rd, \rd )
49 tst \rd, #UART_SR_TXFULL @
50 bne 1002b @ wait if FIFO is full