1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Debugging macro include header 4 * 5 * Copyright (C) 2011 Xilinx 6 */ 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] */ 10 11 #define UART_SR_TXFULL 0x00000010 /* TX FIFO full */ 12 #define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */ 13 14 #define UART0_PHYS 0xE0000000 15 #define UART0_VIRT 0xF0800000 16 #define UART1_PHYS 0xE0001000 17 #define UART1_VIRT 0xF0801000 18 19 #if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1) 20 # define LL_UART_PADDR UART1_PHYS 21 # define LL_UART_VADDR UART1_VIRT 22 #else 23 # define LL_UART_PADDR UART0_PHYS 24 # define LL_UART_VADDR UART0_VIRT 25 #endif 26 27 .macro addruart, rp, rv, tmp 28 ldr \rp, =LL_UART_PADDR @ physical 29 ldr \rv, =LL_UART_VADDR @ virtual 30 .endm 31 32 .macro senduart,rd,rx 33 strb \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA 34 .endm 35 36 .macro waituartcts,rd,rx 37 .endm 38 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 43 beq 1001b 44 .endm 45 46 .macro busyuart,rd,rx 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 51 .endm 52