tools/bq_boot_code_checksum_32

   1 #!/bin/sh
   2 #checksum from prog flash, 1 row = 32 code words (1 word = 3 bytes, 22bits)
   3
   4 if [ -z "${1}" ]; then
   5         echo "checksum 1 row of flash program space" >&2
   6         echo "Usage:" >&2
   7         echo "  ${0} <row>" >&2
   8         exit
   9 fi
  10
  11 ROW_LO=$((${1} & 0xff))
  12 ROW_HI=$(((${1} >> 8) & 0xff))
  13
  14 . ./i2c_config.sh
  15
  16 smb_init
  17 #column argument seems to be constant
  18 smb_write 5 0x0 3 ${ROW_LO} ${ROW_HI} 0
  19 smb_commit
  20
  21 smb_init
  22 smb_write 1 0x3
  23 smb_read 8
  24 TMP=$(smb_commit)
  25 CNT=${TMP%% *}
  26 ARGS=${TMP#* }
  27 STR="`echo $ARGS | cut -d " " -f 1-$(($CNT)) `"
  28
  29 echo $STR