hello,all! I'm trying to put u-boot-0.4.0 to the WindRiver MDP PRO board(with

a daughter board Mpc823),I use the FADS823 as my model to modify. I use

the vision ICEII BDM interface to program flash and debug the code.

1.in the cpu/mpc8xx/cpu_init.c :when I masked the or/br set clause,the

info can displayed on the console, when not, nothing displayed 2.After I masked the OR/BR in the cpu_init.c,when I debug with the

vision ICEII BDM,everything is OK; when without the BDM, the u-boot can

run to relocate_code() in lib_ppc/board.c: with vision ICE： U-Boot 0.4.0 (Sep 19 2003 - 11:12:10)

CPU: PPC823ZTnnB2 at 25 MHz: 2 kB I-Cache 1 kB D-Cache Board: bcsr3=0x1000000c *((uint *)BCSR3)=0xbbbbbbbb WindRiver with db MPC823 rev MDP PRO I2C: ready DRAM: bcsr2=0x10000008 (uint *)bcsr2=0x10000008 *((uint *)bcsr2)=0xbbbbbbbb k=0x7 4 MB before relocate_code() in board.c FLASH: value=0x1 value=0xa4 size_b1=0x80000value=0x1 value=0xa4 512 kB In: serial Out: serial Err: serial Net: SCC ETHERNET =>

without vision ICE： U-Boot 0.4.0 (Sep 19 2003 - 11:12:10)

CPU: PPC823ZTnnB2 at 25 MHz: 2 kB I-Cache 1 kB D-Cache Board: bcsr3=0x1000000c *((uint *)BCSR3)=0x2e342e30 WindRiver with db MPC823 rev MDP PRO I2C: ready DRAM: bcsr2=0x10000008 (uint *)bcsr2=0x10000008 *((uint *)bcsr2)=0x6f742030 k=0xe 4 MB before relocate_code() in board.c

I have been trapped here for 3 weeks.Some guy told me that my dram

hasn't been initialized correctly! I have modified the UPM table,the

OR/BR, but it doesn't work! Can you tell me how to initialize the dram

? Any advices are appriciated!