Hi Casperiters, When I was playing trying to make a netbooting with the ROACH2 and I issue the command: "run tftpuboot" and making the story short I ended up with no uboot :(
Luckily I have access to one xilinx jtag so I was thinking in connecting via xmd to the ppc and send the uboot with the command dow. The jtag found 10 devices where one is the Virtex, other one is the Coolrunner and 8 unknown devices. I think the ppc Is none of those unknown devices, because the IR length is zero. So now I have some doubts to how to proceed: 1) Looking at the roach2 diagram, the coolrunner is connected in certain fashion with the ppc. Could I load the uboot using as target the coolrunner? 2) Reading the roach1 bringup memo in the old wiki, it says that one way to upload the uboot is to use a Macraigor usbWiggler to set the ppc program counter in a specific location in order to open a xmodem. The roach2 works in the same way? Also, do I need that specific jtag or the Xilinx one could do the job? https://casper.ssl.berkeley.edu/wiki/ROACH_Bringup#PowerPC_U-Boot_Configuration Here are the possible targets that jtag found: JTAG chain configuration -------------------------------------------------- Device ID Code IR Length Part Name 1 0440f1e1 0 unknown 2 84288093 10 XC6VSX475T 3 16d4a093 8 XC2C256 4 1a464069 0 unknown 5 1a464069 0 unknown 6 1a464069 0 unknown 7 1a464069 0 unknown 8 000003d3 0 unknown 9 000003d3 0 unknown 10 18006197 0 unknown 11 18006197 0 unknown -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/134f9f9b-7141-44a6-9316-49e83dd8050fn%40lists.berkeley.edu.
