Minimal MMU linux hangs on DE1 board

Hi all, when trying to build my first MMU linux on a DE1 board system hangs just after nios2-terminal with:

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "USB-Blaster [USB 6-1.1]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Linux version 2.6.34-00692-g5bc7853-dirty (root@mcesarpc4114c.sec.upm.es) (gcc version 4.1.2)# 62 Wed Jun 23 19:31:26 CEST 2010

bootconsole [early0] enabled

and that's all. The system is a bare minimum one comprising only:

• linux_cpu (JTAG_debug at 0x07ff_f800)

• linux_timer_1ms (0x0840_0000, IRQ 11)

• fast_tlb_miss_ram_1k (0x07ff_f400, both slaves)

• cfi_flash (thru tsb_cpu_cfi, 0x0000_0000, 4MB)

• sdram (0x1000_0000, 8MB)

• jtag_uart (0x0840_0020, IRQ 1)

all working at 100 MHz, except for the sdram running at 50 (this is the CII_Starter_SD_Card_Audio DE1 example without SRAM, LEDs & PIOs). I've followed steps reported in the wiki, used the sopc-create-header-files script, disabled GPIO, DMA, LEDs with make menuconfig, ...

Can anybody help me?

Thanks & regards.