static void configure_misc(void)
{
struct device *dev = SA_DEV_ROOT;
config_t *conf = dev->chip_info;
msr_t msr;
msr = rdmsr(IA32_MISC_ENABLE);
msr.lo |= (1 << 0); /* Fast String enable */
msr.lo |= (1 << 3); /* TM1/TM2/EMTTM enable */
if (conf->eist_enable)
cpu_enable_eist();
else
cpu_disable_eist();
wrmsr(IA32_MISC_ENABLE, msr);
/* Disable Thermal interrupts */
msr.lo = 0;
msr.hi = 0;
wrmsr(IA32_THERM_INTERRUPT, msr);
/* Enable package critical interrupt only */
msr.lo = 1 << 4;
msr.hi = 0;
wrmsr(IA32_PACKAGE_THERM_INTERRUPT, msr);
/* Enable PROCHOT */
msr = rdmsr(MSR_POWER_CTL);
msr.lo |= (1 << 0); /* Enable Bi-directional PROCHOT as an input*/
msr.lo |= (1 << 23); /* Lock it */
wrmsr(MSR_POWER_CTL, msr);
}
void set_max_freq(void)
{
if (cpu_get_burst_mode_state() == BURST_MODE_UNAVAILABLE) {
/* Burst Mode has been factory configured as disabled
* and is not available in this physical processor
* package.
*/
printk(BIOS_DEBUG, "Burst Mode is factory disabled\n");
return;
}
/* Enable burst mode */
cpu_enable_burst_mode();
/* Enable speed step. */
cpu_enable_eist();
/* Set P-State ratio */
cpu_set_p_state_to_turbo_ratio();
}
