304 lines
6.8 KiB
C
304 lines
6.8 KiB
C
/**************************************************************************
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Copyright (c) 2013, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <string.h>
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#define CPU_UNKNOWN 0
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#define CPU_ARMV6 1
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#define CPU_ARMV7 2
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#define CPU_CORTEXA9 3
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#define CPU_CORTEXA15 4
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static char *cpuname[] = {
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"UNKOWN",
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"ARMV6",
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"ARMV7",
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"CORTEXA9",
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"CORTEXA15"
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};
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static char *cpuname_lower[] = {
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"unknown",
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"armv6",
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"armv7",
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"cortexa9",
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"cortexa15"
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};
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int get_feature(char *search)
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{
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#ifdef linux
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FILE *infile;
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char buffer[2048], *p,*t;
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p = (char *) NULL ;
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infile = fopen("/proc/cpuinfo", "r");
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while (fgets(buffer, sizeof(buffer), infile))
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{
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if (!strncmp("Features", buffer, 8))
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{
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p = strchr(buffer, ':') + 2;
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break;
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}
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}
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fclose(infile);
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if( p == NULL ) return;
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t = strtok(p," ");
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while( t = strtok(NULL," "))
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{
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if (!strcmp(t, search)) { return(1); }
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}
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#endif
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return(0);
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}
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int detect(void)
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{
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#ifdef linux
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FILE *infile;
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char buffer[512], *p;
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p = (char *) NULL ;
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infile = fopen("/proc/cpuinfo", "r");
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while (fgets(buffer, sizeof(buffer), infile))
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{
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if (!strncmp("CPU part", buffer, 8))
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{
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p = strchr(buffer, ':') + 2;
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break;
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}
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}
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fclose(infile);
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if(p != NULL) {
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if (strstr(p, "0xc09")) {
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return CPU_CORTEXA9;
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}
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if (strstr(p, "0xc0f")) {
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return CPU_CORTEXA15;
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}
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}
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p = (char *) NULL ;
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infile = fopen("/proc/cpuinfo", "r");
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while (fgets(buffer, sizeof(buffer), infile))
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{
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if ((!strncmp("model name", buffer, 10)) || (!strncmp("Processor", buffer, 9)))
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{
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p = strchr(buffer, ':') + 2;
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break;
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}
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}
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fclose(infile);
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if(p != NULL)
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{
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if (strstr(p, "ARMv7"))
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{
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if ( get_feature("vfpv4"))
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return CPU_ARMV7;
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if ( get_feature("vfpv3"))
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return CPU_ARMV7;
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if ( get_feature("vfp"))
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return CPU_ARMV6;
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}
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if (strstr(p, "ARMv6"))
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{
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if ( get_feature("vfp"))
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return CPU_ARMV6;
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}
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}
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#endif
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return CPU_UNKNOWN;
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}
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char *get_corename(void)
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{
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return cpuname[detect()];
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}
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void get_architecture(void)
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{
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printf("ARM");
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}
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void get_subarchitecture(void)
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{
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int d = detect();
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printf("%s", cpuname[d]);
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}
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void get_subdirname(void)
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{
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printf("arm");
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}
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void get_cpuconfig(void)
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{
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int d = detect();
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switch (d)
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{
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case CPU_CORTEXA9:
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printf("#define CORTEXA9\n");
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printf("#define ARMV7\n");
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printf("#define HAVE_VFP\n");
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printf("#define HAVE_VFPV3\n");
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if ( get_feature("neon")) printf("#define HAVE_NEON\n");
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if ( get_feature("vfpv4")) printf("#define HAVE_VFPV4\n");
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printf("#define L1_DATA_SIZE 32768\n");
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printf("#define L1_DATA_LINESIZE 32\n");
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printf("#define L2_SIZE 1048576\n");
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printf("#define L2_LINESIZE 32\n");
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printf("#define DTB_DEFAULT_ENTRIES 128\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 4\n");
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break;
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case CPU_CORTEXA15:
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printf("#define CORTEXA15\n");
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printf("#define ARMV7\n");
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printf("#define HAVE_VFP\n");
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printf("#define HAVE_VFPV3\n");
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if ( get_feature("neon")) printf("#define HAVE_NEON\n");
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if ( get_feature("vfpv4")) printf("#define HAVE_VFPV4\n");
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printf("#define L1_DATA_SIZE 32768\n");
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printf("#define L1_DATA_LINESIZE 32\n");
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printf("#define L2_SIZE 1048576\n");
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printf("#define L2_LINESIZE 32\n");
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printf("#define DTB_DEFAULT_ENTRIES 128\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 4\n");
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break;
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case CPU_ARMV7:
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printf("#define ARMV7\n");
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printf("#define HAVE_VFP\n");
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printf("#define HAVE_VFPV3\n");
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if ( get_feature("neon")) printf("#define HAVE_NEON\n");
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if ( get_feature("vfpv4")) printf("#define HAVE_VFPV4\n");
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printf("#define L1_DATA_SIZE 65536\n");
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printf("#define L1_DATA_LINESIZE 32\n");
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printf("#define L2_SIZE 512488\n");
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printf("#define L2_LINESIZE 32\n");
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printf("#define DTB_DEFAULT_ENTRIES 64\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 4\n");
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break;
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case CPU_ARMV6:
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printf("#define ARMV6\n");
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printf("#define HAVE_VFP\n");
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printf("#define L1_DATA_SIZE 65536\n");
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printf("#define L1_DATA_LINESIZE 32\n");
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printf("#define L2_SIZE 512488\n");
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printf("#define L2_LINESIZE 32\n");
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printf("#define DTB_DEFAULT_ENTRIES 64\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 4\n");
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break;
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}
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}
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void get_libname(void)
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{
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int d = detect();
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printf("%s", cpuname_lower[d]);
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}
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void get_features(void)
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{
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#ifdef linux
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FILE *infile;
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char buffer[2048], *p,*t;
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p = (char *) NULL ;
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infile = fopen("/proc/cpuinfo", "r");
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while (fgets(buffer, sizeof(buffer), infile))
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{
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if (!strncmp("Features", buffer, 8))
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{
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p = strchr(buffer, ':') + 2;
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break;
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}
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}
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fclose(infile);
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if( p == NULL ) return;
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t = strtok(p," ");
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while( t = strtok(NULL," "))
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{
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if (!strcmp(t, "vfp")) { printf("HAVE_VFP=1\n"); continue; }
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if (!strcmp(t, "vfpv3")) { printf("HAVE_VFPV3=1\n"); continue; }
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if (!strcmp(t, "vfpv4")) { printf("HAVE_VFPV4=1\n"); continue; }
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if (!strcmp(t, "neon")) { printf("HAVE_NEON=1\n"); continue; }
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}
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#endif
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return;
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}
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