2 * Debugging macro include header
4 * Copyright (C) 2011 Xilinx
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 #define UART_CR_OFFSET 0x00 /* Control Register [8:0] */
16 #define UART_SR_OFFSET 0x2C /* Channel Status [11:0] */
17 #define UART_FIFO_OFFSET 0x30 /* FIFO [15:0] or [7:0] */
19 #define UART_SR_TXFULL 0x00000010 /* TX FIFO full */
20 #define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */
22 #define UART0_PHYS 0xE0000000
23 #define UART1_PHYS 0xE0001000
24 #define UART_SIZE SZ_4K
25 #define UART_VIRT 0xF0001000
27 #if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
28 # define LL_UART_PADDR UART1_PHYS
30 # define LL_UART_PADDR UART0_PHYS
33 #define LL_UART_VADDR UART_VIRT
35 .macro addruart, rp, rv, tmp
36 ldr \rp, =LL_UART_PADDR @ physical
37 ldr \rv, =LL_UART_VADDR @ virtual
41 str \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA
48 1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register
49 tst \rd, #UART_SR_TXFULL @
50 bne 1002b @ wait if FIFO is full