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core: Distinguish Cortex processors: A8 vs later (A9, A15)

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Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
This commit is contained in:
Peter Meerwald 2012-07-05 14:32:59 +02:00 • committed by Peter Meerwald
parent 789da0c063
commit 40450bdbf2
2 changed files with 16 additions and 7 deletions
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20
src/pulsecore/cpu-arm.c
View file

@ -80,10 +80,9 @@ static char *get_cpuinfo(void) {
#endif /* defined (__arm__) && defined (__linux__) */ #endif /* defined (__arm__) && defined (__linux__) */
void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags) { void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags) {
#if defined (__arm__) #if defined (__arm__) && defined (__linux__)
#if defined (__linux__)
char *cpuinfo, *line; char *cpuinfo, *line;
int arch; int arch, part;
/* We need to read the CPU flags from /proc/cpuinfo because there is no user /* We need to read the CPU flags from /proc/cpuinfo because there is no user
* space support to get the CPU features. This only works on linux AFAIK. */ * space support to get the CPU features. This only works on linux AFAIK. */
@ -104,6 +103,7 @@ void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags) {
pa_xfree(line); pa_xfree(line);
} }
/* get the CPU features */ /* get the CPU features */
if ((line = get_cpuinfo_line(cpuinfo, "Features"))) { if ((line = get_cpuinfo_line(cpuinfo, "Features"))) {
const char *state = NULL; const char *state = NULL;
@ -122,16 +122,24 @@ void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags) {
pa_xfree(current); pa_xfree(current);
} }
} }
/* get the CPU part number */
if ((line = get_cpuinfo_line(cpuinfo, "CPU part"))) {
part = strtoul(line, NULL, 0);
if (part == 0xc08)
*flags |= PA_CPU_ARM_CORTEX_A8;
pa_xfree(line);
}
pa_xfree(cpuinfo); pa_xfree(cpuinfo);
pa_log_info("CPU flags: %s%s%s%s%s%s", pa_log_info("CPU flags: %s%s%s%s%s%s%s",
(*flags & PA_CPU_ARM_V6) ? "V6 " : "", (*flags & PA_CPU_ARM_V6) ? "V6 " : "",
(*flags & PA_CPU_ARM_V7) ? "V7 " : "", (*flags & PA_CPU_ARM_V7) ? "V7 " : "",
(*flags & PA_CPU_ARM_VFP) ? "VFP " : "", (*flags & PA_CPU_ARM_VFP) ? "VFP " : "",
(*flags & PA_CPU_ARM_EDSP) ? "EDSP " : "", (*flags & PA_CPU_ARM_EDSP) ? "EDSP " : "",
(*flags & PA_CPU_ARM_NEON) ? "NEON " : "", (*flags & PA_CPU_ARM_NEON) ? "NEON " : "",
(*flags & PA_CPU_ARM_VFPV3) ? "VFPV3 " : ""); (*flags & PA_CPU_ARM_VFPV3) ? "VFPV3 " : "",
#endif (*flags & PA_CPU_ARM_CORTEX_A8) ? "Cortex-A8 " : "");
#endif #endif
} }

3
src/pulsecore/cpu-arm.h
View file

@ -36,7 +36,8 @@ typedef enum pa_cpu_arm_flag {
PA_CPU_ARM_VFP = (1 << 2), PA_CPU_ARM_VFP = (1 << 2),
PA_CPU_ARM_EDSP = (1 << 3), PA_CPU_ARM_EDSP = (1 << 3),
PA_CPU_ARM_NEON = (1 << 4), PA_CPU_ARM_NEON = (1 << 4),
PA_CPU_ARM_VFPV3 = (1 << 5) PA_CPU_ARM_VFPV3 = (1 << 5),
PA_CPU_ARM_CORTEX_A8 = (1 << 6),
} pa_cpu_arm_flag_t; } pa_cpu_arm_flag_t;
void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags); void pa_cpu_get_arm_flags(pa_cpu_arm_flag_t *flags);