longrun(1) [redhat man page]

LONGRUN(1)						      General Commands Manual							LONGRUN(1)

NAME

       Transmeta(TM) Crusoe(TM) LongRun(TM) utility

SYNOPSIS

       longrun [-c device] [-m device] [-hlpv] [-f flag] [-s low high]

DESCRIPTION

       The longrun utility is used to control and query LongRun settings on Transmeta Crusoe processors.

       -c device
	      Set the CPUID device.  The default CPUID device is /dev/cpu/0/cpuid.

       -m device
	      Set the MSR device.  The default CPUID device is /dev/cpu/0/msr.

       -h     Print help.

       -l     List LongRun information about available performance levels for the CPU.

	      The following values are reported on all Transmeta CPUs that implement LongRun.

		 %	An  available  performance  level, expressed as a percentage of range of available core CPU frequencies.  0 corresponds to
			the lowest available frequency and 100 corresponds to the highest.

		 MHz	The core CPU frequency at that level.

		 Volts	The core CPU voltage at that level.

		 usage	The power usage relative to the maximum performance level.

       -p     Print current LongRun settings and status: whether LongRun is enabled, whether LongRun Thermal Extensions are  active,  the  current
	      LongRun performance window (expressed as a percentile range), the current LongRun performance level (expressed as a percentile), and
	      the current LongRun flags.

       -v     Be more verbose.

       -f flag
	      Set a LongRun mode flag.	Currently, the two supported flags are performance and economy.  This controls whether the processor is in
	      "performance mode" or "economy mode".

       -s low high
	      Set  the	current  LongRun  performance  window  as a percentile range.  The low number cannot be greater than the high number.  The
	      minimum and maximum performance values accepted by the CPU are 0 and 100, respectively.

ENVIRONMENT

       No environment variables are used.

FILES

       This program requires that the Linux CPUID and MSR devices be compiled into the kernel (or  loaded  as  kernel  modules),  that	the  CPUID
       character device be readable, and that the MSR character device be both readable and writable.

SEE ALSO

       acpid(8), apmd(8), hdparm(8)

AUTHOR

       Daniel Quinlan <quinlan@transmeta.com>

								 February 14, 2001							LONGRUN(1)

CPUCONTROL(8)						    BSD System Manager's Manual 					     CPUCONTROL(8)

NAME

     cpucontrol -- control utility for the cpuctl(4) device

SYNOPSIS

     cpucontrol [-vh] -m msr device
     cpucontrol [-vh] -m msr=value device
     cpucontrol [-vh] -m msr&=mask device
     cpucontrol [-vh] -m msr|=mask device
     cpucontrol [-vh] -i level device
     cpucontrol [-vh] -i level,level_type device
     cpucontrol [-vh] [-d datadir] -u device

DESCRIPTION

     The cpucontrol utility can be used to read and write arbitrary machine-specific CPU registers via the cpuctl(4) special device.  It can also
     be used to apply CPU firmware updates.

     The following options are available:

     -d datadir
	     Where to look for microcode images.  The option can be specified multiple times.

     -m msr[=value]
	     Show value of the specified MSR.  MSR register number should be given as a hexadecimal number.

     -m msr=value
	     Store the value in the specified MSR register.  The value argument can be prefixed with ~ operator.  In this case the inverted value
	     of argument will be stored in the register.

     -m msr&=mask
	     Store the result of bitwise AND operation between mask and the current MSR value in the MSR register.  The mask argument can be pre-
	     fixed with ~ operator.  In this case the inverted value of mask will be used.

     -m msr|=mask
	     Store the result of bitwise OR operation between mask and the current MSR value in the MSR register.  The mask argument can be pre-
	     fixed with ~ operator.  In this case the inverted value of mask will be used.

     -i level
	     Retrieve CPUID info.  Level should be given as a hex number.

     -i level,level_type
	     Retrieve CPUID info.  Level and level_type should be given as hex numbers.

     -u      Apply CPU firmware updates.  The cpucontrol utility will walk through the configured data directories and apply all firmware updates
	     available for this CPU.

     -v      Increase the verbosity level.

     -h      Show help message.

EXIT STATUS

     The cpucontrol utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     The command

     ``cpucontrol -m 0x10 /dev/cpuctl0''

     will read the contents of TSC MSR from CPU 0.

     To set the CPU 0 TSC MSR register value to 0x1 issue

     ``cpucontrol -m 0x10=0x1 /dev/cpuctl0''.

     The following command will clear the second bit of TSC register:

     ``cpucontrol -m 0x10&=~0x02 /dev/cpuctl0''.

     The following command will set the forth and second bit of TSC register:

     ``cpucontrol -m 0x10|=0x0a /dev/cpuctl0''.

     The command

     ``cpucontrol -i 0x1 /dev/cpuctl1''

     will retrieve the CPUID level 0x1 from CPU 1.

     To perform firmware updates on CPU 0 from images located at /usr/local/share/cpuctl/ use the following command:

     ``cpucontrol -d /usr/local/share/cpuctl/ -u /dev/cpuctl0''

SEE ALSO

     cpuctl(4)

HISTORY

     The cpucontrol utility first appeared in FreeBSD 7.2.

AUTHORS

     The cpucontrol utility and this manual page was written by Stanislav Sedov <stas@FreeBSD.org>.

BUGS

     Yes, probably, report if any.

BSD
								   June 30, 2009							       BSD