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Rockbox mail archiveSubject: Re: Need help with UART bootRe: Need help with UART boot
From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Wed, 2 Jun 2004 23:00:55 +0200 (MEST) > I tried to upgrade my non-flashable jukebox (recorder 20) with a new flash > chip today, Whoo, what a brave guy! Where did you get a chip? > but I need some help with [IDC]Dragon's uart_boot tool. I'll try. > b) 1. jukebox off, UART boot mod disabled (original state) > 2. uart_boot -p COM1 -r -a -b > 3. power-on jukebox > Result: uart_boot displays some menu (like [IDC]Dragon described it in > his early posts about the UART boot mod) and complains that it can't find > minimon_v2.bin I could give you the _v2 file, but it's pointless. I was on a wrong path when I did the -a option, thought that archos boot menu is in ROM, but it's in the flash, prone to be overwritten anyway. Nevertheless I managed to use that protocol to start arbitrary code (my minimon in another flavour). > c) 1. UART boot mod enabled > 2. power-on jukebox > 3. uart_boot -p COM1 -r -b > Result: LED is flashing as expected Yes, the way to use it in your case. > I thought it worked > and started soldering in the flash chip. Afterwards I tried flashing the > new chip with > > uart_boot -p COM1 -r -f firmware_rec.bin Don't forget to patch in your h/w mask, 2 bytes at offset 0xFC and 0xFD, else you may get some funny behaviour. > and it looked as if it was successful, but it wasn't. If I dump the > contents > of the flash, I get something completely different. Reading with uart_boot? This should give you the true content. Different than what? The flashed firmware_rec.bin? > But, the uart_boot seems > to work, since flashing the led works, the harddisk-shutdown works and the > readout of the flash id works as well (I get 0xBF, 0xD6 with the new chip) Archos/Rockbox doesn't work? You need to release the LCD lines for a normal start. Jörg -- "Sie haben neue Mails!" - Die GMX Toolbar informiert Sie beim Surfen! Jetzt aktivieren unter http://www.gmx.net/info _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-06-02 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |