# Configure 8xx\_io in 2.4.21-pre3

- From: Xiaogeng (Shawn) Jin \<hidden\>
- Date: 2003-01-14 05:07:38 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2003/01/9386235
- Thread: https://ratatoskr.run/linuxppc-dev/2003/01/9386235/t.md

```text

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/
```