blob: c1d4188900b402bd88029fd5a59c944c3301ebfa [file] [log] [blame]
/*
* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <debug.h>
#include <stdarg.h>
#include <stdint.h>
/***********************************************************
* The tf_printf implementation for all BL stages
***********************************************************/
static void unsigned_num_print(unsigned long int unum, unsigned int radix)
{
/* Just need enough space to store 64 bit decimal integer */
unsigned char num_buf[20];
int i = 0, rem;
do {
rem = unum % radix;
if (rem < 0xa)
num_buf[i++] = '0' + rem;
else
num_buf[i++] = 'a' + (rem - 0xa);
} while (unum /= radix);
while (--i >= 0)
putchar(num_buf[i]);
}
static void string_print(const char *str)
{
while (*str)
putchar(*str++);
}
/*******************************************************************
* Reduced format print for Trusted firmware.
* The following formats are supported by this print
* %x - 32 bit hexadecimal format
* %llx and %lx -64 bit hexadecimal format
* %s - string format
* %d or %i - signed 32 bit decimal format
* %u - unsigned 32 bit decimal format
* %ld and %lld - signed 64 bit decimal format
* %lu and %llu - unsigned 64 bit decimal format
* %p - pointer format
* Exits on all other formats.
*******************************************************************/
void tf_printf(const char *fmt, ...)
{
va_list args;
int bit64;
int64_t num;
uint64_t unum;
char *str;
va_start(args, fmt);
while (*fmt) {
bit64 = 0;
if (*fmt == '%') {
fmt++;
/* Check the format specifier */
loop:
switch (*fmt) {
case 'i': /* Fall through to next one */
case 'd':
if (bit64)
num = va_arg(args, int64_t);
else
num = va_arg(args, int32_t);
if (num < 0) {
putchar('-');
unum = (unsigned long int)-num;
} else
unum = (unsigned long int)num;
unsigned_num_print(unum, 10);
break;
case 's':
str = va_arg(args, char *);
string_print(str);
break;
case 'p':
unum = (uint64_t)va_arg(args, void *);
if (unum)
string_print("0x");
unsigned_num_print(unum, 16);
break;
case 'x':
if (bit64)
unum = va_arg(args, uint64_t);
else
unum = va_arg(args, uint32_t);
unsigned_num_print(unum, 16);
break;
case 'l':
bit64 = 1;
fmt++;
goto loop;
case 'u':
if (bit64)
unum = va_arg(args, uint64_t);
else
unum = va_arg(args, uint32_t);
unsigned_num_print(unum, 10);
break;
default:
/* Exit on any other format specifier */
goto exit;
}
fmt++;
continue;
}
putchar(*fmt++);
}
exit:
va_end(args);
}