Hello, I've been trying to adapt linux ( the HEAD CVS version ) to a custom board based around a Au1100. To be more precise, the board use a "cpu module" (CSB650 from Cogent http://www.cogcomp.com/csb_csb650.htm ) that's placed on a custom PCB. I've compiled and booted a kernel sucessfully, I see the message on the serial console. It's in Big Endian mode since the boot loaded on the card is big endian only and I could manage to get it to switch to little endian ... Now, let's go on with the problems : * About USB. First time I tried, it just hung but I quicly found out that it was because I didn't route the 48Mhz clock to USB module. After that, I had to slightly adapt the ohci bus glue to enable the OHCI big endian mode. After that, when a USB stick is inserted, it gets detected, I can mount it and read small files. But when I try to read bigger files ( just 1 or 2 MB ), I get stuff like : [4294743.146000] usb 1-1: reset full speed USB device using au1xxx-ohci and address 2 [4294743.618000] usb 1-1: reset full speed USB device using au1xxx-ohci and address 2 [4294743.891000] usb 1-1: reset full speed USB device using au1xxx-ohci and address 2 [4294744.151000] usb 1-1: reset full speed USB device using au1xxx-ohci and address 2 [4294744.328000] au1xxx-ohci au1xxx-ohci.0: bad entry 4b [4294744.346000] au1xxx-ohci au1xxx-ohci.0: bad entry ac450000 [4294744.363000] au1xxx-ohci au1xxx-ohci.0: bad entry 8f820014 [4294744.381000] au1xxx-ohci au1xxx-ohci.0: bad entry 38210001 [4294744.495000] hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling... [4294744.515000] usb 1-1: USB disconnect, address 2 [4294745.532000] au1xxx-ohci au1xxx-ohci.0: IRQ INTR_SF lossage [4294745.532000] usb 1-1: sg_complete, unlink --> -19 [4294745.532000] usb 1-1: sg_complete, unlink --> -19 Which means absolutly nothing to me ;( Has anyone got a clue ? I can't say for sure it's not hardware but the cpu module is used by others and on the base board, it's just a couple of differential pair with 90ohm differential impedance, nothing more ... * About ethernet : It works, I have a network access. However I have two kind of errors. On the RX side, I get quite a lot of "rx miss" errors (when au1x00_eth debug is on). About 5% of packets are dropped. That's not _too_ much of a problem as log as it doesn't increase. But what can that be due too ? A more annoying problem is that I get a lot of : [ 506.397000] NETDEV WATCHDOG: eth0: transmit timed out [ 506.412000] eth0: au1000_tx_timeout: dev=8048b400 theses are quite comment when I transmitt a lot and they completly ruin the transmission (_real_ slow !). Heres is some stats from ifconfig : RX packets:50496 errors:76 dropped:76 overruns:0 frame:0 TX packets:49573 errors:47 dropped:0 overruns:0 carrier:74 Any insight / suggestion is appreciated, I'm getting desperate ;) Sylvain
