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Marvin
2026-09-17 03:19:43 +02:00
parent 6719239036
commit 27fe15f83d
85 changed files with 945 additions and 901 deletions
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arch/x86_64/tsc.c
+6 -6
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@@ -11,7 +11,7 @@ void tsc_init() {
return;
if (!(asm_cpuid(1, 0).edx & CPUID_1D_TSC) || !(asm_cpuid(0x8000'0007, 0).edx & (1 << 8))) {
kprintf("No invariant TSC detected!\n");
log("x86_64/tsc", "No invariant TSC detected!\n");
return;
}
@@ -34,21 +34,21 @@ void tsc_init() {
// On a normal system, this should usually never be called and is a last resort
// since at this point we have at least the HPET timer.
if (tsc_leaf.ecx != 0 && tsc_leaf.ebx != 0 && tsc_leaf.eax != 0) {
kprintf("Calibrating TSC using CPUID 0x15");
log("x86_64/tsc", "Calibrating TSC using CPUID 0x15");
freq = tsc_leaf.ecx * tsc_leaf.ebx / tsc_leaf.eax;
} else {
kprintf("Unable to calibrate TSC using CPUID frequency information");
log("x86_64/tsc", "Unable to calibrate TSC using CPUID frequency information");
return;
}
} else {
kprintf("Unable to calibrate the TSC without a clock or static frequency info!\n");
log("x86_64/tsc", "Unable to calibrate the TSC without a clock or static frequency info!\n");
return;
}
kprintf("Timer frequency is %lu MHz\n", freq / 1'000'000);
log("x86_64/tsc", "Timer frequency is %lu MHz\n", freq / 1'000'000);
}
static void tsc_option(bool opt) {
use_tsc = opt;
}
CMDLINE_OPTION("tsc", tsc_option);
CMDLINE_OPTION("x86_64.tsc", tsc_option);