1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * linux/arch/unicore32/include/mach/ocd.h
4  *
5  * Code specific to PKUnity SoC and UniCore ISA
6  *
7  * Copyright (C) 2001-2010 GUAN Xue-tao
8  */
9 
10 #ifndef __MACH_PUV3_OCD_H__
11 #define __MACH_PUV3_OCD_H__
12 
13 #if defined(CONFIG_DEBUG_OCD)
ocd_putc(unsigned int c)14 static inline void ocd_putc(unsigned int c)
15 {
16 	int status, i = 0x2000000;
17 
18 	do {
19 		if (--i < 0)
20 			return;
21 
22 		asm volatile ("movc %0, p1.c0, #0" : "=r" (status));
23 	} while (status & 2);
24 
25 	asm("movc p1.c1, %0, #1" : : "r" (c));
26 }
27 
28 #define putc(ch)	ocd_putc(ch)
29 #else
30 #define putc(ch)
31 #endif
32 
33 #endif
34