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           This   file  can  be  passed  to  the  program NVRAM WakeUp (see nvram-
           wakeup(8) for more information) via the --configfile option.
           It might look as follows:
                  # nvram-wakeup.conf
                  #  This is an example configuration for MSI MS-6351
                  need_reboot = ON_ANY_CHANGE # All changes take effect
                                              # after a reboot
                  addr_chk_h  = 0x30          # These are adresses of
                  addr_chk_l  = 0x31          # the checksum bytes
                  addr_stat   = 0x55          # Status byte
                  shift_stat  = 3             # The position of the
                                              # status bit in the byte
                  addr_day    = 0x56          # Day and time
                  addr_hour   = 0x57
                  addr_min    = 0x58
                  addr_sec    = 0x59


           Any empty line or a line containing only space characters is ignored.
           Anything after and including a # character is treated as a comment  and
           is ignored.
           The  options  must  have  the  form NAME = VALUE with or without spaces
           before NAME, after VALUE or around the equal sign.  Valid  options  are
           described below.
           The  options  may  appear in any order. The same option must not appear


           bcd         = (ON|OFF), default OFF
                  indicates if the board uses BCD notation for storing values.
                  BCD  is the  so called Binary  Coded  Decimal   notation  (actu-
                  ally, it is 'packed BCD', in the plain BCD they waste whole byte
                  per digit.) in this  notation  the  decimal  numbers  0..99  are
                  stored  using  four  bits  for   every  digit,  e.g. 24 would be
                  stored as 0x24  (the  4 is stored in  the lower  four  bits  and
                  the 2 is stored in the upper four bits).
                  may stay undefined.  That  means, the board  doesn't store  them
                  (e.g.  because it stores that value in RTC alarm registers)
           addr_chk_h2 = (0x00|...|0x71), default: undefined
           addr_chk_l2 = (0x00|...|0x71), default: undefined
                  There are some boards which have two checksums.  Since I haven't
                  seen many of them yet, I don't know if they  need  special  han-
           addr_wdays  = (0x00|...|0x71 ), default: undefined
                  The  address  of  the  byte   containing a weekday vector.  Cur-
                  rently,  I  know  of  only  two boards,  which store  a  weekday
                  vector (Asus SP98-X and SP97-X).
           rtc_time    = (ON|OFF), default: OFF
                  indicates  if we have to set the the RTC alarm time accordingly.
           rtc_mon     = (0x00|...|0x71|0x7F), default: undefined
           rtc_day     = (0x00|...|0x71|0x7F), default: undefined
                  similar to addr_mon/addr_day, but    stored   in   BCD  and  not
                  affecting the checksum. In  most cases, the day is stored in the
                  RTC register D (0x7F), but there are  also  some  boards,  which
                  store  it somewhere  in the nvram (address <= 0x71).
                  If rtc_day is >= 0x72, you will need a kernel patch: in <kernel-
                  src>/drivers/char/nvram.c change the line
                         #define NVRAM_BYTES 128-RTC_FIRST_BYTE
                         #define NVRAM_BYTES 128
                  in newer kernels (beginning with 2.4.20) it is the line
                         #define NVRAM_BYTES (128-NVRAM_FIRST_BYTE)
                  which must be changed to
                         #define NVRAM_BYTES 128
           reset_mon   = (ON|OFF), default: OFF
           reset_day   = (ON|OFF), default: OFF
                  on some boards  we have  to  set  the  value  of  rtc_mon  resp.
                  rtc_day to 0 when disabling the wakeup feature.
           nr_stat     = 1 (just on/off)
           nr_mon      = 4 (   0..12   )
           nr_day      = 5 (   0..31   )
           nr_rtc_mon  = 5 (0x00...0x12)
           nr_rtc_day  = 6 (0x00...0x31)
           nr_wdays    = 7 ( 1 per day )
           shift_min   = (0|...|2), default: 0
           shift_sec   = (0|...|2), default: 0
                  Indicates,  by how many  bits the value is  shifted  to the left
                  in   the  byte,  e.g.   the  value of the day (5 bits)  could be
                  stored in the bits marked with an "x" of a byte:
                      000xxxxx  -> shift_day = 0
                      00xxxxx0  -> shift_day = 1
                      0xxxxx00  -> shift_day = 2
                      xxxxx000  -> shift_day = 3
           need_reboot  = (OFF|ON_STAT|ON_SEC|ON_MIN|ON_HOUR
                           default: OFF
                  Here "..." means any or-ed combination of multiple  ON_XXX  val-
                  Some  boards need a reboot  for changes in nvram to take effect.
                  Some of them  need  a  reboot  after  _any_  change,   some   of
                  them only after the status  bit  was changed. Anyway, now we are
                  able to define when a board needs a reboot:
                  OFF    means, the board never needs it
                         means, the board needs it after _any_ change on nvram.
                         means, reboot only if the status bit is changed
                         means, reboot whenever  the  status  or  the  second  are
                  The idea behind this is  if nvram-wakeup decides that we need to
                  reboot, it will exit with exit status 1 (instead of 0).  So  the
                  script  which runs nvram-wakeup could  react  on  this.  We also
                  print it to stderr, so if nvram-wakeup is run  directly  on  the
                  command line, the user  could  react appropriately.
           upper_method    = (OFF|INTEL|DS1685|VT82Cxxx|VT8235_37), default: OFF
                  indicates  if  upper nvram must be used and if yes, which method
                  to use to access it.  Note that upper nvram can only be read  if
                  --directisa parameter is specified.  Possible values:
                  OFF    upper nvram disabled (default)
                  INTEL  access  upper nvram by a method used by most (if not all)
                         Intel chipsets with ICH, ICH2, C-ICH, ...
                         (datasheet     at
                         (datasheet     at
                         access upper nvram by a method used  by  VIA's  VT8235/37
                         South Bridges.  Reported to work with VT8233 as well.
                         (no official source)
           chk_method    = (DELL|FSC), default: undefined
                  indicates  which  algorithm for calculation of the checksum must
                  be used.  Possible values:
                         Majority of mainboards use the same algorithm (just addi-
                         tion of values).  This algorithm is used if no chk_method
                         option is specified.
                  DELL   This method is used by many Dell mainboards (addition  of
                         negative values).
                  FSC    Fujitsu-Siemens uses  yet another algorithm. I don't know
                         it and they consider it as a company  secret.  Thus  this
                         method is not implemented.


           rtc_mon_0_is_c0   = (ON|OFF), default: OFF
           rtc_day_0_is_c0   = (ON|OFF), default: OFF
                  on  some boards  we have to store the value 0xC0 instead of 0 in
                  rtc_mon resp. rtc_day.  If you use  one  of  this  two  options,
                  don't forget to set nr_rtc_mon resp. nr_rtc_day to 8.
           day_hack          = (1|...|4), default: undefined
                  on  some  boards the value of addr_day is split over the day and
                  the status byte. In those cases the lower day_hack bits  of  the
                  day  value are stored in the highest bits of the status byte and
                  the rest is stored in the day byte.
           day_no_bcd        = (ON|OFF), default: OFF
                  on some boards the value of  addr_day  is  not  stored  in  BCD,
                  although  everything  else is.  This option has no effect is the
                  option bcd is not enabled.


           Copyright (C) 2001-2004 Sergei Haller.
           This program is free software; you can redistribute it and/or modify it
           under the terms of the GNU General Public License as published  by  the
           Free  Software Foundation; either version 2 of the License, or (at your
           option) any later version.
           This program is distributed in the hope that it  will  be  useful,  but
           WITHOUT  ANY  WARRANTY;  without  even  the  implied  warranty  of MER-
           Public License for more details.
           You should have received a copy of the GNU General Public License along
           with this program; if not, write to the Free Software Foundation, Inc.,
           59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Linux Jan 16 2004 nvram-wakeup.conf(5)


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