/* * linux/arch/unicore32/kernel/debug-macro.S * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Debugging macro include header */#include <generated/asm-offsets.h>#include <mach/hardware.h> 		.macro	put_word_ocd, rd, rx=r161001:		movc		\rx, p1.c0, #0		cand.a	\rx, #2		bne	1001b		movc		p1.c1, \rd, #1		.endm #ifdef CONFIG_DEBUG_OCD		/* debug using UniCore On-Chip-Debugger */		.macro	addruart, rx		.endm 		.macro	senduart, rd, rx		put_word_ocd	\rd, \rx		.endm 		.macro	busyuart, rd, rx		.endm 		.macro	waituart, rd, rx		.endm#else#define UART_CLK_DEFAULT        3686400 * 20	/* Uartclk = MCLK/ 2, The MCLK on my board is 3686400 * 40  */#define BAUD_RATE_DEFAULT	115200	/* The baud rate of the serial port */ #define UART_DIVISOR_DEFAULT	(UART_CLK_DEFAULT \				/ (16 * BAUD_RATE_DEFAULT) - 1) 		.macro	addruart,rx		mrc	p0, #0, \rx, c1, c0		tst	\rx, #1			@ MMU enabled?		moveq	\rx, #0xee000000	@ physical base address		movne	\rx, #0x6e000000	@ virtual address 		@ We probe for the active serial port here		@ However, now we assume UART0 is active:	epip4d		@ We assume r1 and r2 can be clobbered. 		movl 	r2, #UART_DIVISOR_DEFAULT		mov 	r1, #0x80		str	r1, [\rx, #UART_LCR_OFFSET]		and	r1, r2, #0xff00		mov	r1, r1, lsr #8		str	r1, [\rx, #UART_DLH_OFFSET]		and	r1, r2, #0xff		str	r1, [\rx, #UART_DLL_OFFSET]		mov 	r1, #0x7		str	r1, [\rx, #UART_FCR_OFFSET]		mov 	r1, #0x3		str	r1, [\rx, #UART_LCR_OFFSET]		mov 	r1, #0x0		str	r1, [\rx, #UART_IER_OFFSET]		.endm 		.macro	senduart,rd,rx		str	\rd, [\rx, #UART_THR_OFFSET]		.endm 		.macro	waituart,rd,rx1001:		ldr	\rd, [\rx, #UART_LSR_OFFSET]		tst	\rd, #UART_LSR_THRE		beq	1001b		.endm 		.macro	busyuart,rd,rx1001:		ldr	\rd, [\rx, #UART_LSR_OFFSET]		tst	\rd, #UART_LSR_TEMT		bne	1001b		.endm#endif