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hws_explained [2018/09/22 02:31]
gozhev
hws_explained [2018/09/27 08:55] (current)
gozhev
Line 2: Line 2:
  
 This document contains explanation of some bytes that are stored in the This document contains explanation of some bytes that are stored in the
-first 4K block of the spi flash boot device.+first 4K block of spi flash boot device. 
 + 
 +===== How to Rewrite a Single Byte/Number in a Binary File ===== 
 +  printf '​\x00\x00\x00\x00'​ | dd conv=notrunc bs=1 of=hws.bin seek=80 
 + 
 +===== HWS Listing =====
  
 The listing below is an output of the following commands: The listing below is an output of the following commands:
Line 8: Line 13:
   # hexdump -ve '"​%08_ax ​   " 1/4 "​%08x"​ "​\n"'​ hws   # hexdump -ve '"​%08_ax ​   " 1/4 "​%08x"​ "​\n"'​ hws
  
-===== Listing ===== 
 My comments are prepended with '#'​ sign. My comments are prepended with '#'​ sign.
 +
 +==== Listing ====
  
   # address ​  # data   # address ​  # data
Line 35: Line 41:
   ​   ​
   #   #
-  # These are 4 offsets of multi-hws parts (do not know what and why it is)+  # These are 4 offsets of multi-hws parts (me do not knows what the purpose 
 +  # of _multi_ hws)
   # see sysparser.pl,​ function fun_uboot   # see sysparser.pl,​ function fun_uboot
   #   #
hws_explained.1537572704.txt.gz · Last modified: 2018/09/22 02:31 by gozhev