[U-Boot-Users] PPC405GP Walnut with IDE hard disk

[甜瓜]

Howdy,
    I have a board PPC405GP DHT-Walnut. It has
#  two pci slots, keyed for 5V only cards
# Promise Technologies PDC20265 IDE
After attaching an IDE driver to the slot, uboot recognizes it:
IDE:   Bus 0: OK
  Device 0: Model: SanDisk SDCFJ-2048 Firm: HDX 4.03 Ser#: 003405D2697E4543
            Type: Removable Hard Disk
            Capacity: 1953.9 MB = 1.9 GB (4001760 x 512)
  Device 1: not available

Well. Then I load linux kernel 2.6.24 which compiled against
the default configuration for Walnut board. From the boot log,
it seems the kernel fails to recognize IDE drive. It tells nothing
about IDE.

Next, I recompile the kernel by selecting ATA, SATA... (all
IDE related options) in "make xconfig". However, the new kernel
still fails for IDE. And in the shell:
# fdisk -l   // displays nothing
# fdisk /dev/hda    // can't open /dev/hda. But the nodes in /dev
                          // have been created properly by using
                          // ELDK_MAKEDEV script.

My question is how to let linux kernel recognize my IDE? I think
it should be easy since uboot gets success, why not kernel?

For your information, I list the boot log here:
Linux version 2.6.24.2 (root at lily) (gcc version 4.2.2) #3 Wed May 21
16:17:26 CST 2008
IBM Walnut port (C) 2000-2002 MontaVista Software, Inc. (source at mvista.com)
Zone PFN ranges:
  DMA             0 ->     8192
  Normal       8192 ->     8192
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->     8192
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 8128
Kernel command line: root=/dev/nfs rw
nfsroot=192.168.1.102:/work/eldk/usr/src/rootfs
ip=192.168.1.200:192.168.1.100:::walnut:eth0:off panic=1
console=ttyS0,115200
PID hash table entries: 128 (order: 7, 512 bytes)
Warning: real time clock seems stuck!
console [ttyS0] enabled
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 29872k available (1976k kernel code, 480k data, 132k init, 0k highmem)
SLUB: Genslabs=11, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1
Mount-cache hash table entries: 512
net_namespace: 64 bytes
NET: Registered protocol family 16
PCI: Probing PCI hardware
PCI: Cannot allocate resource region 4 of device 0000:00:04.0
SCSI subsystem initialized
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
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Generic RTC Driver v1.07
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
serial8250: ttyS0 at MMIO 0x0 (irq = 0) is a 16550A
serial8250: ttyS1 at MMIO 0x0 (irq = 1) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: module loaded
PPC 4xx OCP EMAC driver, version 3.54
mal0: initialized, 1 TX channels, 1 RX channels
eth0: emac0, MAC de:ad:be:ef:00:00
eth0: found Generic MII PHY (0x09)
Found: AMD AM29LV040B
PPC40x-flash: Found 1 x8 devices at 0x0 in 8-bit bank
number of JEDEC chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
Creating 3 MTD partitions on "PPC40x-flash":
0x00000000-0x00020000 : "reserved"
0x00020000-0x00040000 : "env"
0x00040000-0x00080000 : "u-boot"
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
eth0: link is down
eth0: link is up, 100 FDX
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
      device=eth0, addr=192.168.1.200, mask=255.255.255.0, gw=255.255.255.255,
     host=walnut, domain=, nis-domain=(none),
     bootserver=192.168.1.100, rootserver=192.168.1.102, rootpath=
Looking up port of RPC 100003/2 on 192.168.1.102
Looking up port of RPC 100005/1 on 192.168.1.102
VFS: Mounted root (nfs filesystem).
Freeing unused kernel memory: 132k init

init started: BusyBox v1.10.2 (2008-05-20 19:17:04 CST)
#

   Thank you in advance!

---
ShenLei