Hi all, we've made some fixes to the ROACH2 kernel, u-boot and rom filesystem. TCPBorphserver3 has also been updated, this has been added to the rom filesystem and nfs.
Grab the files here (NOTE: The nfs tarball must be untarred as root for correct permissions): https://github.com/ska-sa/roach2_nfs_uboot ROACH2 Test machine set-up instructions: https://docs.google.com/a/ska.ac.za/document/d/1tqw4C6uZ6EULl1OykTFL_vQTnK52UBr0aYqTg44E5wg/edit ) To program the new u-boot (NB! choose the correct binary for your revision of R2, programming the wrong binary will cause the board to switch itself off at boot, and fixing that requires soldering on the board): 1. Set up a tftp and dhcp server (see the tftp section in the test machine setup instructions). 2. Create a symlink or rename the u-boot binary to "u-boot.bin" e.g. "ln -s u-boot-r2-rev1.bin u-boot.bin" in the tftp directory. 3. Plug a USB cable into the ROACH2 and open a terminal session to ttyUSB2 (Minicom is good, see the document above for setting up a minicom session to connect to ttyUSB2) 4. NB! Do not skip this step: The u-boot macro to reprogram u-boot is incorrect, you must define a new one (once the new u-boot is flashed the macro will be correct). Using the current macro bricks the board (can be recovered by reprogram u-boot via setting up a test machine and sending a xmodem receiver to the PPC via JTAG and then sending the binary) a) Boot into u-boot (reset the board and press any key to stop autoboot) b) type: "setenv writeuboot protect off 0xfff80000 0xffffffff\; era 0xfff80000 0xffffffff\; cp.b 0x4000000 0xfff80000 \$\{filesize\}" at the u-boot prompt without the quotes. Note this is the same as the current macro but the current cp.b 0x400000 is missing a 0! Leave the protect on bit, the U-boot command line is too short to add it and the macro will be overwritten anyway when the new u-boot loads. c) type: "printenv" and double check the macro! 5. type: "run tftpuboot" 6. when done type: "reset". You should see u-boot loading and *** Warning - bad CRC, using default environment. All the macros are reset to defaults. To program the kernel: 1. Create a symlink or rename the kernel image to uImage e.g. "ln -s uImage-r2borph3 uImage" in the tftp directory. 2. At the uboot prompt type: run tftpkernel 3. Note that all the fixes has been for tcpborphserver3 and to use that you have to flash the borph3 kernel. To use tcpborphserver2 flash the borph2 kernel. To program the new romfs: 1. Create a symlink or rename the romfs image to romfs e.g. "ln -s roach2-root-2012-10-18.romfs romfs" in the tftp directory. 2. At the uboot prompt type: run tftproot 3. This takes a long time! About 5 minutes. If anything is unclear please don't hesitate to ask. Regards
