65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* debug_ll.h
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*
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* written by Marc Singer
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* 12 Feb 2005
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*
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* Copyright (C) 2005 Marc Singer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef __INCLUDE_DEBUG_LL_H__
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#define __INCLUDE_DEBUG_LL_H__
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#if defined (CONFIG_DEBUG_LL)
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/*
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* mach/debug_ll.h should implement PUTC_LL. This can be a macro or a static
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* inline function. Note that several SoCs expect the UART to be initialized
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* by a debugger or a first stage bootloader. You won't see anything without
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* this initialization. Depending on the PUTC_LL implementation the board might
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* also hang in PUTC_LL without proper initialization.
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*/
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# include <mach/debug_ll.h>
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# define PUTHEX_LL(value) ({ unsigned long v = (unsigned long) (value); \
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int i; unsigned char ch; \
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for (i = 8; i--; ) {\
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ch = ((v >> (i*4)) & 0xf);\
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ch += (ch >= 10) ? 'a' - 10 : '0';\
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PUTC_LL (ch); }})
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/*
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* Be careful with PUTS_LL, it only works if the binary is running at the
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* link address which often is not the case during early startup. If in doubt
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* don't use it.
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*/
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static __inline__ void PUTS_LL(const char * str)
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{
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while (*str) {
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if (*str == '\n') {
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PUTC_LL('\r');
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}
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PUTC_LL(*str);
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str++;
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}
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}
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#else
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# define PUTC_LL(c) do {} while (0)
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# define PUTHEX_LL(v) do {} while (0)
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# define PUTS_LL(c) do {} while (0)
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#endif
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#endif /* __INCLUDE_DEBUG_LL_H__ */
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