Loading...
Searching...
No Matches
NE10_init.c
/*
* Copyright 2011-15 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 Limited 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 ARM LIMITED 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 ARM LIMITED AND 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 <stdio.h>
#include <string.h>
#include <ctype.h>
#include "NE10.h"
#define CPUINFO_BUFFER_SIZE (1024*4)
// This local variable indicates whether or not the running platform supports ARM NEON
ne10_result_t is_NEON_available = NE10_ERR;
ne10_result_t ne10_HasNEON()
{
return is_NEON_available;
}
ne10_result_t ne10_init()
{
ne10_result_t status = NE10_ERR;
#ifndef __MACH__
FILE* infofile = NULL; // To open the file /proc/cpuinfo
ne10_int8_t cpuinfo[CPUINFO_BUFFER_SIZE]; // The buffer to read in the string
ne10_uint32_t bytes = 0; // Numbers of bytes read from the file
ne10_int32_t i = 0; // Temporary loop counter
memset (cpuinfo, 0, CPUINFO_BUFFER_SIZE);
infofile = fopen ("/proc/cpuinfo", "r");
if (!infofile)
{
fprintf(stderr, "ERROR: couldn't read file \"/proc/cpuinfo\".\n");
return NE10_ERR;
}
bytes = fread (cpuinfo, 1, sizeof (cpuinfo), infofile);
fclose (infofile);
if (0 == bytes || CPUINFO_BUFFER_SIZE == bytes)
{
fprintf (stderr, "ERROR: Couldn't read the file \"/proc/cpuinfo\". NE10_init() failed.\n");
return NE10_ERR;
}
while ('\0' != cpuinfo[i])
{
cpuinfo[i] = (ne10_int8_t) tolower (cpuinfo[i]);
++i;
}
if (0 != strstr ( (const char *)cpuinfo, "neon"))
{
is_NEON_available = NE10_OK;
}
#else //__MACH__
is_NEON_available = NE10_OK;
#endif //__MACH__
#if defined (NE10_ENABLE_MATH)
status = ne10_init_math (is_NEON_available);
if (status != NE10_OK)
{
fprintf(stderr, "ERROR: init math failed\n");
return NE10_ERR;
}
#endif
#if defined (NE10_ENABLE_DSP)
status = ne10_init_dsp (is_NEON_available);
if (status != NE10_OK)
{
fprintf(stderr, "ERROR: init dsp failed\n");
return NE10_ERR;
}
#endif
#if defined (NE10_ENABLE_IMGPROC)
status = ne10_init_imgproc (is_NEON_available);
if (status != NE10_OK)
{
fprintf(stderr, "ERROR: init imgproc failed\n");
return NE10_ERR;
}
#endif
#if defined (NE10_ENABLE_PHYSICS)
status = ne10_init_physics (is_NEON_available);
if (status != NE10_OK)
{
fprintf(stderr, "ERROR: init imgproc failed\n");
return NE10_ERR;
}
#endif
return NE10_OK;
}