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Update model identification code

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This commit is contained in:
David Schmenk 2017-05-16 12:26:22 -07:00
parent 9e43df64ff
commit e85c7c8554
1 changed files with 17 additions and 9 deletions
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26
src/gpclk.c
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@ -73,24 +73,32 @@ void gpclk(int idiv)
unsigned int arm_base = ARMv6_PERI_BASE; // Default to ARMv6 peripheral base
FILE *cpuinfo;
char keystr[1024], valstr[128];
char rasstr[1024], pistr[128];
int version;
if ((cpuinfo = fopen("/proc/cpuinfo", "r") ) == NULL)
if ((cpuinfo = fopen("/proc/device-tree/model", "r") ) == NULL)
{
printf("can't open /proc/cpuinfo\n");
printf("can't open /proc/device-tree/model\n");
exit(-1);
}
while (!feof(cpuinfo))
if (fscanf(cpuinfo, "%s %s %d", rasstr, pistr, &version) == 3)
{
if (fscanf(cpuinfo, "%s : %s\n", keystr, valstr) == 2)
if (strcmp(rasstr, "Raspberry") == 0 && strcmp(pistr, "Pi") == 0)
{
if (strcmp(keystr, "Hardware") == 0 && strcmp(valstr, "BCM2709") == 0)
//printf("Found %s %s version %d\n", rasstr, pistr, version);
switch (version)
{
arm_base = ARMv7_PERI_BASE; // Pi version 2 (ARMv7)
break;
case 0:
case 1:
arm_base = ARMv6_PERI_BASE; // Pi version 1 (ARMv6)
break;
case 2:
case 3:
arm_base = ARMv7_PERI_BASE; // Pi version 2 and 3 (ARMv7)
break;
}
}
}
}
fclose(cpuinfo);
// Set up gpi pointer for direct register access
cmgp = setup_io(arm_base + CMGP_OFFSET);