with our current 2.4.22-pre8 kernel, we found that, on our 850DE board (ethernet on SCC3), ethernet would work fine when we downloaded the bootable image, but not if we booted from the image that was burned into flash.
eventually, one of the guys here tracked the problem to arch/ppc/8xx_io/enet.c, and made the following change (around line 915 in enet.c in both this version of the kernel and in the latest bk pull of linuxppc-2.5): #if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC) || defined(CONFIG_EP8xx) || defined(CONFIG_EP852) /* And while we are here, set the configuration to enable ethernet. */ *((volatile uint *)RPX_CSR_ADDR) &= ~BCSR0_ETHLPBK; *((volatile uint *)RPX_CSR_ADDR) |= (BCSR0_ETHEN | BCSR0_COLTESTDIS | BCSR0_FULLDPLXDIS); > *((volatile uint *)RPX_CSR_ADDR) |=0x00100000; <-- add this //1:ethernet,0:SPI #endif i don't know enough about the hardware to know what this is for. if anyone does, is it still an issue? is there a better way to handle this? as much as possible, i'm trying to get everything running on this board without messing with the kernel source. thanks. given that the author of that line is not around at the moment, i'm just going to poke around the source and see if i can deduce what it's for. rday ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/ ** This list is shutting down 7/24/2004.