On Fri, May 06, 2011 at 04:19:07PM -0400, Eric Cooper wrote: > On Fri, May 06, 2011 at 08:59:37PM +0200, Luka Perkov wrote: > > as the subject implies I have never used jtag. I would like to replace > > original uboot from this device: > > > > http://wiki.openwrt.org/toh/gigaset/sx76x > > Have you already tried connecting a serial cable? If there's still a > working u-boot on the device, it would be easier to use that to > flash a new one.
I have already bicked one and I would not like to do the same with other one. > > 1. I think that is the cable is interface/parport.cfg . Am I correct? If > > not how my interface config file should look like? > > That's correct. I use the same interface (but for an ARM target). > If you're using a Linux host, you just want: > interface parport > parport_cable wiggler > in your config. Make sure you have the "ppdev" kernel module loaded so that > /dev/parport0 shows up. Thank you. Unfortunately jtag does not work through usb-to-parallel adapter. After connecting jtag I have had more success with urjtag. But I have also stuck with it. Now again I'm back to openocd. Here is all the info I can get: > scan_chain TapName Enabled IdCode Expected IrLen IrCap IrMask -- ------------------- -------- ---------- ---------- ----- ----- ------ 0 auto0.tap Y 0x00000183 0x00000183 5 0x01 0x03 1 auto1.tap Y 0x00000183 0x00000183 5 0x01 0x03 But when I run openocd with additional parameter: -f /usr/share/openocd/scripts/target/ar71xx.cfg I get: Info : JTAG tap: ar71xx.cpu tap/device found: 0x00000183 (mfg: 0x0c1, part: 0x0000, ver: 0x0) Warn : JTAG tap: ar71xx.cpu UNEXPECTED: 0x00000183 (mfg: 0x0c1, part: 0x0000, ver: 0x0) Error: JTAG tap: ar71xx.cpu expected 1 of 1: 0x00000001 (mfg: 0x000, part: 0x0000, ver: 0x0) Warn : Unexpected idcode after end of chain: 32 0x00000183 Error: double-check your JTAG setup (interface, speed, missing TAPs, ...) Error: Trying to use configured scan chain anyway... Error: IR capture error at bit 5, saw 0x21 not 0x...3 Warn : Bypassing JTAG setup events due to errors It would be great if my findings from urjtag could be helpful for openocd: http://tinyurl.com/3rqjzer Luka _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
