mirror of https://github.com/proxmox/mirror_qemu
PPC: mac99: Fix core99 timer frequency
There is a special timer in the mac99 machine that we recently started to emulate. Unfortunately we emulated it in the wrong frequency. This patch adapts the frequency Mac OS X uses to evaluate results from this timer, making calculations it bases off of it work. Signed-off-by: Alexander Graf <agraf@suse.de>master
parent
6fd33a7502
commit
d696760b43
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@ -243,13 +243,18 @@ static void timer_write(void *opaque, hwaddr addr, uint64_t value,
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static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
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static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
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{
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{
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uint32_t value = 0;
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uint32_t value = 0;
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uint64_t systime = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
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uint64_t kltime;
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kltime = muldiv64(systime, 4194300, get_ticks_per_sec() * 4);
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kltime = muldiv64(kltime, 18432000, 1048575);
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switch (addr) {
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switch (addr) {
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case 0x38:
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case 0x38:
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value = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
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value = kltime;
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break;
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break;
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case 0x3c:
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case 0x3c:
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value = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 32;
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value = kltime >> 32;
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break;
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break;
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}
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}
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