46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
setenv stdout serial,vga
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echo "check U-Boot" ;
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setenv offset 0x400
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if ${fs}load ${dtype} ${disk}:1 12000000 u-boot.imx || ${fs}load ${dtype} ${disk}:1 12000000 u-boot.nopadding ; then
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echo "read $filesize bytes from SD card" ;
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if sf probe || sf probe || \
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sf probe 1 27000000 || sf probe 1 27000000 ; then
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echo "probed SPI ROM" ;
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if sf read 0x12400000 $offset $filesize ; then
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if cmp.b 0x12000000 0x12400000 $filesize ; then
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echo "------- U-Boot versions match" ;
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else
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echo "Need U-Boot upgrade" ;
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echo "Program in 5 seconds" ;
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for n in 5 4 3 2 1 ; do
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echo $n ;
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sleep 1 ;
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done
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echo "erasing" ;
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sf erase 0 0x50000 ;
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# two steps to prevent bricking
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echo "programming" ;
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sf write 0x12000000 $offset $filesize ;
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echo "verifying" ;
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if sf read 0x12400000 $offset $filesize ; then
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if cmp.b 0x12000000 0x12400000 $filesize ; then
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while echo "---- U-Boot upgraded. reset" ; do
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sleep 120
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done
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else
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echo "Read verification error" ;
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fi
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else
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echo "Error re-reading EEPROM" ;
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fi
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fi
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else
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echo "Error reading boot loader from EEPROM" ;
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fi
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else
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echo "Error initializing EEPROM" ;
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fi ;
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else
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echo "No U-Boot image found on SD card" ;
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fi
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