acpi ok but cpufreq not supporting my CPUs

[Patrick Proniewski]

Hello,

I have a FreeBSD box running 6.2R on 2 dual core Xeon LV (sossaman).  
Vanilla ACPI is supported, and powerd works great. But advanced  
features are unavailable because cpufreq won't recognize my CPUs. For  
example, as acpi will only reduce frequency and not voltage, the CPU  
remains at the same temperature.
I've read on http://www.daemonology.net/freebsd-est/ that "est" port,  
from where comes cpufreq's "est", won't handle multiple CPUs. Is that  
still true ?

dmesg (part of):
FreeBSD 6.2-RELEASE #0: Sun Jan 14 20:48:28 CET 2007

CPU: Intel(R) Xeon(TM) CPU            000  @ 1.66GHz (1666.79-MHz 686- 
class CPU)
   Origin = "GenuineIntel"  Id = 0x6e8  Stepping = 8
    
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE 
,MCA,CMOV,PAT,PSE36,
    CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
   Features2=0xc1a9<SSE3,MON,VMX,EST,TM2,<b14>,<b15>>
   AMD Features=0x100000<NX>
   Cores per package: 2


cpu0: <ACPI CPU> on acpi0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est: CPU supports Enhanced Speedstep, but is not recognized.
est: cpu_vendor GenuineIntel, msr a1e0a1e06000a1e
device_attach: est0 attach returned 6
p4tcc0: <CPU Frequency Thermal Control> on cpu0

(same for cpu1/2/3)

Is there anything I can do to make "est" work with the sossaman CPU ?

thanks in advance,

Patrick Proniewski