Hi Xiaogeng... Here are some things I would check :
1.) I recommend start with UART only build of the kernel first 2.) Did you check that your PA,PB,PC, and PD pins are set up properly ... I my custom board had pins moved for things like enet on SCC ? However normally I believe SMC1 only can be on one pair of pins for a UART ... another 3.) Another thing to look at is your BRG clock for your board ... in my kernel I found mvista didn't look at the some parts of the hardware reset word that divide down my 80 Mhz reference intenerally before it goes to the brg ... I was really surprised this code wasn't there ... Good luck, Jim -----Original Message----- From: Xiaogeng (Shawn) Jin [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 14, 2003 12:08 AM To: linuxppc-embedded at lists.linuxppc.org Subject: Configure 8xx_io in 2.4.21-pre3 The 8xx CPM configuration in 2.4.4 release from DENX has more options than any other release, including 2.4.21-pre3. For example, CONFIG_SMC1_UART is in 2.4.4 (DENX). My board uses SMC1 as UART. I almost needn't to change anything in 2.4.4-denx to make my 8xx CPM working. I'm trying to migrate the kernel to 2.4.21 and the kernel is stuck in my_console_write() and no any message is shown on the console. So I think the problem is in CPM settings. I enabled the following configuations for MPC8xx CPM. CONFIG_FEC_ENET=y CONFIG_USE_MDIO=y CONFIG_FEC_LXT971=y CONFIG_8xx_COPYBACK=y CONFIG_UCODE_PATCH=y How can I set CPM correctly in 2.4.21? Any hints are greatly appreciated. - Shawn. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
