Problems of Linux with MMU in DE2-70(SD card and BOA application)

Hi,all

I'm trying to use linux with MMU(nios2-linux-20090929) in the DE2-70,then I came into some problems.Maybe someone could help.

what I have done:

1.Add Altera SPI Core for the MMC in the step in uClinux wiki,and DM9000 interface.

2.before adding the MMU,I first Use the sopc in uClinux(nios2-linux-20090730),configthe kernel to surpport Net DM9000 and Altera Spi for mmc.then everything works fine,including the SD card mounting and boa application that I will tell below.

what I have failed:

1.when I switch the sopc and follow the wiki to build an sopc system with MMU,configthe Altera Spi for mmc and DM9000 in the same way as I did when using uClinu.the strange thing happened,the SPI driver for MMC recongnize the SD card and register in the "/dev" dir,but when I use command "mount -t vfat /dev/mmcblk0p1 /mnt" ,it shows "mount: mounting /dev/mmcblk0p1 on /mnt failed: No such device or address".

2.when I run the boa application ,the shell promotes"Could not open boa.conf for reading."

Here is my booting message:

Linux version 2.6.30-00494-g84a224b-dirty (cfistalent@cfistalent-desktop) (gcc version 4.1.2)# 6 Mon Apr 19 19:11:04 CST 2010

console [early0] enabled

Early printk initialized

Linux/Nios II-MMU

init_bootmem_node(?,0x2e7, 0x0, 0x2000)

free_bootmem(0x2e7000, 0x1d19000)

reserve_bootmem(0x2e7000, 0x400)

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128

Kernel command line:

NR_IRQS:32

PID hash table entries: 128 (order: 7, 512 bytes)

Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)

Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)

We have 8192 pages of RAM

Memory available: 29504k/2970k RAM, 0k/0k ROM (1555k kernel code, 1414k data)

Calibrating delay loop... 49.25 BogoMIPS (lpj=246272)

Mount-cache hash table entries: 512

net_namespace: 296 bytes

NET: Registered protocol family 16

init_BSP(): registering device resources

bio: create slab <bio-0> at 0

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 1024 (order: 1, 8192 bytes)

TCP bind hash table entries: 1024 (order: 0, 4096 bytes)

TCP: Hash tables configured (established 1024 bind 1024)

TCP reno registered

NET: Registered protocol family 1

msgmni has been set to 57

io scheduler noop registered

io scheduler anticipatory registered

io scheduler deadline registered

io scheduler cfq registered (default)

ttyJ0 at MMIO 0x44014b0 (irq = 1) is a Altera JTAG UART

console handover: boot [early0] -> real [ttyJ0]

dm9000 Ethernet Driver, V1.31

eth0 (dm9000): not using net_device_ops yet

eth0: dm9000a at e44014b8,e44014bc IRQ 3 MAC: 00:7d:2a:4f:55:e3 (chip)

mice: PS/2 mouse device common for all mice

mmc_spi spi2.0: ASSUMING SPI bus stays unshared!

mmc_spi spi2.0: ASSUMING 3.2-3.4 V slot power

mmc_spi spi2.0: SD/MMC host mmc0, no DMA, no WP, no poweroff

TCP cubic registered

NET: Registered protocol family 17

mmc0: host does not support reading read-only switch. assuming write-enable.

mmc0: new SD card on SPI

mmcblk0: mmc0:0000 SD256 241 MiB

mmcblk0: p1

Welcome to

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BusyBox v1.15.1 (2010-04-19 16:37:19 CST) hush - the humble shell

Enter 'help' for a list of built-in commands.

/# mount /dev/mmcblk0p1 /mnt

mount: mounting /dev/mmcblk0p1 on /mnt failed: No such device or address

/# mount /dev/mmcblk0 /mnt

mount: mounting /dev/mmcblk0 on /mnt failed: No such device or address

/# boa

Could not open boa.conf for reading.