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- /*
- * Debugging macro include header
- *
- * Copyright (C) 2011 Xilinx
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
- #define UART_CR_OFFSET 0x00 /* Control Register [8:0] */
- #define UART_SR_OFFSET 0x2C /* Channel Status [11:0] */
- #define UART_FIFO_OFFSET 0x30 /* FIFO [15:0] or [7:0] */
- #define UART_SR_TXFULL 0x00000010 /* TX FIFO full */
- #define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */
- #define UART0_PHYS 0xE0000000
- #define UART0_VIRT 0xF0800000
- #define UART1_PHYS 0xE0001000
- #define UART1_VIRT 0xF0801000
- #if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
- # define LL_UART_PADDR UART1_PHYS
- # define LL_UART_VADDR UART1_VIRT
- #else
- # define LL_UART_PADDR UART0_PHYS
- # define LL_UART_VADDR UART0_VIRT
- #endif
- .macro addruart, rp, rv, tmp
- ldr \rp, =LL_UART_PADDR @ physical
- ldr \rv, =LL_UART_VADDR @ virtual
- .endm
- .macro senduart,rd,rx
- strb \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA
- .endm
- .macro waituart,rd,rx
- 1001: ldr \rd, [\rx, #UART_SR_OFFSET]
- ARM_BE8( rev \rd, \rd )
- tst \rd, #UART_SR_TXEMPTY
- beq 1001b
- .endm
- .macro busyuart,rd,rx
- 1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register
- ARM_BE8( rev \rd, \rd )
- tst \rd, #UART_SR_TXFULL @
- bne 1002b @ wait if FIFO is full
- .endm
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