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Lines 285-296
chrp_real_maxaddr(platform_t plat)
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| 285 |
static u_long |
285 |
static u_long |
| 286 |
chrp_timebase_freq(platform_t plat, struct cpuref *cpuref) |
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chrp_timebase_freq(platform_t plat, struct cpuref *cpuref) |
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{ |
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{ |
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phandle_t phandle; |
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char buf[8]; |
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phandle_t cpu, dev, root; |
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int res; |
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int32_t ticks = -1; |
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int32_t ticks = -1; |
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phandle = cpuref->cr_hwref; |
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root = OF_peer(0); |
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dev = OF_child(root); |
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while (dev != 0) { |
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res = OF_getprop(dev, "name", buf, sizeof(buf)); |
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if (res > 0 && strcmp(buf, "cpus") == 0) |
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break; |
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dev = OF_peer(dev); |
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} |
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for (cpu = OF_child(dev); cpu != 0; cpu = OF_peer(cpu)) { |
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res = OF_getprop(cpu, "device_type", buf, sizeof(buf)); |
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if (res > 0 && strcmp(buf, "cpu") == 0) |
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break; |
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} |
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if (cpu == 0) |
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return (512000000); |
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OF_getencprop(phandle, "timebase-frequency", &ticks, sizeof(ticks)); |
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OF_getencprop(cpu, "timebase-frequency", &ticks, sizeof(ticks)); |
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if (ticks <= 0) |
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if (ticks <= 0) |
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panic("Unable to determine timebase frequency!"); |
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panic("Unable to determine timebase frequency!"); |
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