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/xnu-8792.61.2/osfmk/i386/
H A Dtsc.c183 uint64_t refFreq; in tsc_init() local
185 refFreq = EFI_get_frequency("ARTFrequency"); in tsc_init()
186 if (refFreq == 0) { in tsc_init()
198 refFreq = BASE_ART_CLOCK_SOURCE_SP; in tsc_init()
200 refFreq = BASE_ART_CLOCK_SOURCE; in tsc_init()
206 tscFreq = refFreq * N / M; in tsc_init()
210 (uint32_t)(refFreq / Mega), in tsc_init()
211 (uint32_t)(refFreq % Mega), in tsc_init()