Hi,

Actually the kernel does not hang just after the uncompressing but hangs somewhere in the UART driver. The reason that you did not get any output is because the serial port driver between MX27ADS and MX27LITEKIT is different. And because of that, the console ttymxc0 in your kernel command fails and printk is not able to print any thing on the screen. You can figure this out by doing a printk trick that inserts a printascii to print the printk_buf.

One solution I did is to port the driver from mainline mx27ads kernel which uses the IMX console driver instead of the MXC console driver in the Freescale BSP. Or you can do in the other way round that you uses the mainline kernel as a code base and port the rest of the drivers from Freescale BSP into the mainline kernel.

I'm still debugging the NAND driver right now and I will submit my code until everything works well.

Cheers,

Hi,zyzyis
Thank you for your help.
I'll try the first solution you adviced. Thank you:)
B.R.
Wei Huang

Hi, all
Unfortunately, I think don't have additional time and energy to finish porting linux on MX27LITEKIT. Hope anyone can complete this issue.

Yeah, I hope someone can help us too. I'm still having problem with the Ethernet and SD card drivers which make me not able to boot the RFS.

Here is my boot message:

Quote:
Linux version 2.6.19.2 (yin@localhost.localdomain) (gcc version 4.2.1) #111 PREEMPT Thu Aug 28 14:22:42 CEST 2008
CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177
Machine: Freescale i.MX27ADS
Memory policy: ECC disabled, Data cache writeback
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
Built 1 zonelists. Total pages: 32512
Kernel command line: console=ttymxc0,115200 root=/dev/mtdblock3 init=/sbin/init ip=dhcp
MXC IRQ initialized
PID hash table entries: 512 (order: 9, 2048 bytes)
Actual CLOCK_TICK_RATE is 14250000 Hz
Actual HRT CLOCK_TICK_RATE is 14250000 Hz
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 126464KB available (2632K code, 592K data, 96K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
MXC GPIO hardware
AIPI VA base: 0xd4000000
Generic PHY: Registered new driver
SCSI subsystem initialized
CSPI: mxc_spi-1 probed
CSPI: mxc_spi-2 probed
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
MXC I2C driver
mc13783 Rev 3.3 FinVer 0 detected
Device spi1.0 probed
PMIC Character device: successfully loaded
PMIC RTC successfully probed
PMIC Light successfully loaded
PMIC Power successfully probed
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 4096 bind 2048)
TCP reno registered
MX27: Power management module initialized
Freescale i.MX27 Dynamic Power Management.
NetWinder Floating Point Emulator V0.97 (double precision)
yaffs Aug 26 2008 18:41:23 Installing.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Real TIme clock Driver v1.0
MXC WatchDog Driver 2.0
MXC Watchdog # 0 Timer: initial timeout 60 sec
Serial: IMX driver
loop: loaded (max 8 devices)
SMSC LAN83C185: Registered new driver
FEC ENET Version 0.2
eth0: ethernet 00:08:ee:01:f8:56
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
fec: PHY @ 0x1f, ID 0x0007c0c3 -- unknown PHY!
MXC: IDE driver, (c) 2004-2006 Freescale Semiconductor
ATA interface call clock enable ATA CLK
mxc_ide_resetproc: resetting ATA controller
ide0: Bus empty, interface released.
MXC MTD nor Driver 2.0
mxc_nor_flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
Intel/Sharp Extended Query Table at 0x0035
cfi_cmdset_0001: Erase suspend on write enabled
Searching for RedBoot partition table in mxc_nor_flash.0 at offset 0x1f0000
No RedBoot partition table detected in mxc_nor_flash.0
Creating 2 MTD partitions on "mxc_nor_flash.0":
0x00000000-0x00040000 : "LoLo Bootloader"
0x00040000-0x00050000 : "Bootloader config"
MXC MTD nand Driver 2.0
NAND device: Manufacturer ID: 0x20, Chip ID: 0x76 (ST Micro NAND 64MiB 3,3V 8-bit)
Scanning device for bad blocks
Bad eraseblock 1945 at 0x01e64000
Bad eraseblock 2561 at 0x02804000
Creating 4 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0x00000000-0x02000000 : "NAND RootFS"
0x00000000-0x04000000 : "<NULL>"
0x00000000-0x04000000 : "<NULL>"
0x00000000-0x04000000 : "<NULL>"
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
i2c /dev entries driver
Driver for 1-wire Dallas network protocol.
Serial: MXC OWire driver
SSI module loaded successfully
PMIC Audio driver loading...
PMIC Battery successfully probed
PMIC Connectivity driver loading..
DPTC controller initialized
SEC: mxc_sec_mod_init() called
MXC MMC/SD driver
mxcmci: probe of mxcmci.0 failed with error -22
mxcmci: probe of mxcmci.1 failed with error -22
Advanced Linux Sound Architecture Driver Version 1.0.13 (Tue Nov 28 14:07:24 2006 UTC).
Control ALSA component registered
ALSA device list:
#0: MXC Freescale with PMIC
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Time: mx27_hrt clocksource has been installed.
Sending DHCP requests ...... timed out!
fec_stop : Graceful transmit stop did not complete !
IP-Config: Retrying forever (NFS root)...
Sending DHCP requests ...

That is good enough for your work.
I hope I can see the boot information on my board in the future:)