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Last Post 19 May 2005 06:54 PM by
jwang
Programming the boot flash on M5475CFE Rev B board
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jwang
New Member
Posts:
16 May 2005 11:49 AM
Last month I got M5475CFE replacement board, Rev B (replacing my old board, Rev 305). It came with dBUG v4a.1a.1d (Dec 6 2004 build) installed and seemed working fine. Recently I tried to reprogram the boot flash (for practice of my own dBUG, but tried Freescale's dBUG first), but it did not work. I used M54X5EVB updater. It seemed going through ok but, after rebooting, the dBUG v4a.1a.1d was still there. Since M54X5EVB updater does not have "verify" capability, I then used Freescale's CF Flasher 3.0 to program/verify - it ended up with verifying error. Did an Erase for a specific sector, but it remained unerased.
Is Rev B board configured to have Write-Protect for boot flash (ie, WP- driven low by CPLD) ? Can't find any jumpers on the board for WP-. It was ok to program the boot flash on my Rev 305 board - I did it before with burning different versions of dBUG.
Have sent this question to Freescale's support, but no response yet.
JC
sams@nospamlogicpd.com
New Member
Posts:
19 May 2005 03:55 PM
We just posted a FAQ that may apply to this problem. It's locatd at:
http://www.logicpd.com/su...q/faq.php?faq_id=131
Let me know if this helps out.
-Sam
jwang
New Member
Posts:
19 May 2005 06:54 PM
Ya, that's it. Thanks.
I knew that the old ChipSelect settings (prior to v4a.1a.1d version of dBUG, Dec 6 04 Build) would have problem with programming Code Flash, but never suspected it would happen to Boot Flash.
I went to revise M5475EVB(Boot).cfg of CF Flasher 3.0 and made
write.l MBAR 0x00000508 0x00100D80
as CSCR0 in dBUG v4a.1a.1d
Now CF Flasher works for Boot Flash
JC
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