static inline uint8_t set_apicid_cpuid_lo(void)
{
#if CONFIG_K8_REV_F_SUPPORT == 0
if(is_cpu_pre_e0()) return 0; // pre_e0 can not be set
#endif
// set the NB_CFG[54]=1; why the OS will be happy with that ???
msr_t msr;
msr = rdmsr(NB_CFG_MSR);
msr.hi |= (1<<(54-32)); // InitApicIdCpuIdLo
wrmsr(NB_CFG_MSR, msr);
return 1;
}
static unsigned ht_read_freq_cap(device_t dev, unsigned pos)
{
/* Handle bugs in valid hypertransport frequency reporting. */
unsigned freq_cap;
freq_cap = pci_read_config16(dev, pos);
freq_cap &= ~(1 << HT_FREQ_VENDOR); /* Ignore Vendor HT frequencies. */
/* AMD 8131 Errata 48. */
if ((dev->vendor == PCI_VENDOR_ID_AMD) &&
(dev->device == PCI_DEVICE_ID_AMD_8131_PCIX)) {
freq_cap &= ~(1 << HT_FREQ_800Mhz);
}
/* AMD 8151 Errata 23. */
if ((dev->vendor == PCI_VENDOR_ID_AMD) &&
(dev->device == PCI_DEVICE_ID_AMD_8151_SYSCTRL)) {
freq_cap &= ~(1 << HT_FREQ_800Mhz);
}
/* AMD K8 unsupported 1GHz? */
if ((dev->vendor == PCI_VENDOR_ID_AMD) && (dev->device == 0x1100)) {
#if CONFIG_K8_HT_FREQ_1G_SUPPORT == 1
#if CONFIG_K8_REV_F_SUPPORT == 0
/* Only e0 later suupport 1GHz HT. */
if (is_cpu_pre_e0())
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
#endif
#else
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
#endif
}
return freq_cap;
}
