OK, sorry about sending my message to the list without enough research into my problem. I have just found out that the Interrupt controller on the NP405H is a bit like a hybrid between the one for CONFIG_440 and the generic 405.
405ep seems to have only one UIC, 405h has UIC0 and UIC1.
I also forgot to mention that I am using u-boot-1.0.0 with no patches , just my own mods.
I notice that there is an ASH405.h in include/configs. This does not set CONFIG_440 and doesn't seem to change the interrupt vectors at all. Does anyone here know anything about this port? Or has anyone else encountered the same interrupt controller issue as I have?
I am in the process of modofying the interrupt code now, but if there are patches for this the I would be very interested in seeing them.
Cheers, Ryan.
-----Original Message----- From: omnium@ziplip.com [mailto:omnium@ziplip.com] Sent: Thursday, January 29, 2004, 4:49 AM To: u-boot-users@lists.sourceforge.net Subject: PPC405H ethernet receive problems
Hi, I'm new!
I am porting u-boot to a custom board with a NP405H processor and an Intel LXT973 dual phy.
I have had a lot of success so far: I have brought the board up and can boot the kernel (without networking).
My network setup is different to the standard eval boards such as the IBM Ash board. I am using MII to talk to the phy with EMAC0 and 2, the ASH uses RMII. Currently I am only trying to support EMAC0 and ignore EMAC2.
So far, the only mod I have made to cpu/ppc4xx/405gp_enet.c is to add to the start of ppc_4xx_eth_init:
out32 (ZMII_FER, ZMII_MDI0 | ZMII_MII0 | ZMII_MII2); out32 (ZMII_SSR, 0x55550000);(this is just before the "/* EMAC RESET */" comment). This should place my cpu into MII mode at the correct speed for my test network.
I can transmit bootp requests and I can send out ARP requests as part of a ping. I verified this using Ethereal on my Linux host.
My problem is reception. I see nothing! The receive LED blinks on the PHY and Ethereal shows DHCP_OFFER messages in response to the request or ARP messages in response to a ping.
Debugging using a Lauterbach (sorry, it's not a BDI2000!) shows that I never get a breakpoint on "enetInt" and therefore never receive any packets.
Unfortunately, I am fairly clueless when it comes to this chip and ethernet in general and hope that someone could point out some likely problems.
I have tested reception on the EMAC using some hardware test software written by a colleague, so I know that it CAN receive data. However, this program polls the EMAC rather than uses interrupts to receive data.
I suspect that using MII rather than RMII may be a clue, but don't know where to proceed.
Any help would be appreciated. Please excuse me if I've missed any obvious details.
Many thanks, Ryan Harkin.