[microblaze-uclinux] Queries regarding booting uClinux kernel on ML402 b

Hi every body,

We are using ML402 board with Microblaze softcore & we want to make uClinux kernel run on our board.

The steps we followed are :

n We have compiled the kernel with board support package with auto-config.in file (which is generated while configuring microblaze in EDK ) placed at ‘linux-2.4.x/arch/microblaze/platform/uclinux-auto/’ .

n Note : we didn’t make any changes in ‘uClinux-dist/vendor’ folder.

n Then we write the kernel image (image.srec) on linear flash with “program flash memory” tool in xilinx platform studio with generate bootloader option enabled.

n Then with ‘download’ command of xps we download Microblaze with bootloader on to the board. This starts reading s-records and starts the execution of kernel.

n It gets the root mount point. But fails at init stage. (at get terminal command)

I will provide the output of Hyper Terminal at the end.

We want to ask that whether our file system is not generated properly (at the time of compilation of kernel, the romfs file system is generated using the ‘vendor/Xilinx/uclinux-auto’ dir. And then the romfs image gets appended to kernel image.). Do we need to make changes in the files under the folder “uClinux-dist/vendor/Xilinx/uclinux-auto”. Our file system has following structure (note : lib folder is empty) :

……………………romfs file system…………………………………..

bin

dev

etc

home

lib

mnt

proc

sbin

tmp

usr

var

'bin':

[

agetty

basename

busybox

cat

chmod

cmp

date

dhcpcd

echo

false

flatfsd

free

ftpd

hostname

ifconfig

init

insmod

kill

killall

lsmod

mkdir

modprobe

mount

netflash

passwd

ping

pwd

reboot

rmmod

shutdown

telnetd

test

thttpd

touch

true

uname

uptime

version

wget

'dev':

console

fb0

flash

kmem

mem

mtd0

mtd1

mtd2

mtd3

mtd4

mtd5

mtd6

mtd7

mtdblock0

mtdblock1

mtdblock2

mtdblock3

mtdblock4

mtdblock5

mtdblock6

mtdblock7

mtdr0

mtdr1

mtdr2

mtdr3

mtdr4

mtdr5

mtdr6

mtdr7

null

nvram

ptyp0

ptyp1

ptyp2

ptyp3

ptyp4

ptyp5

ptyp6

ptyp7

ptyp8

ptyp9

ptypa

ptypb

ptypc

ptypd

ptype

ptypf

random

rtc

tty

ttyS0

ttyS1

ttyS2

ttyS3

ttyp0

ttyp1

ttyp2

ttyp3

ttyp4

ttyp5

ttyp6

ttyp7

ttyp8

ttyp9

ttypa

ttypb

ttypc

ttypd

ttype

ttypf

urandom

zero

'flash':

all

boot

bootarg

config

ethmac

image

jffs2

spare

'etc':

config

default

fstab

group

inetd.conf

init.d

inittab

mtab

passwd

rc.d

resolv.conf

'default':

inittab

passwd

start

'init.d':

flatfsd

hostname

'rc.d':

S02flatfsd

S30hostname

'lib':

modules

Directory data: 3144 bytes

185.71% (+13 bytes) [

0.39% (+120 bytes) agetty

1.38% (+15 bytes) basename

0.00% (+0 bytes) busybox

0.44% (+16 bytes) cat

0.46% (+63 bytes) chmod

0.42% (+62 bytes) cmp

0.41% (+61 bytes) cp

0.45% (+32 bytes) date

0.38% (+181 bytes) dhcpcd

2.26% (+17 bytes) echo

0.39% (+2 bytes) false

0.39% (+136 bytes) flatfsd

0.40% (+61 bytes) free

-0.29% (-185 bytes) ftpd

0.38% (+90 bytes) hd

0.45% (+18 bytes) hostname

0.40% (+153 bytes) ifconfig

0.39% (+75 bytes) init

0.43% (+61 bytes) kill

0.43% (+62 bytes) ln

0.38% (+122 bytes) login

1.21% (+16 bytes) mkdir

0.42% (+62 bytes) mv

0.35% (+215 bytes) netflash

0.40% (+121 bytes) passwd

0.37% (+134 bytes) ping

0.40% (+77 bytes) ps

0.96% (+16 bytes) pwd

0.44% (+78 bytes) reboot

1.32% (+17 bytes) rm

0.42% (+107 bytes) sh

0.43% (+63 bytes) shutdown

0.34% (+97 bytes) telnetd

-0.27% (-150 bytes) thttpd

1.54% (+15 bytes) touch

1.16% (+6 bytes) true

1.73% (+17 bytes) uname

0.40% (+62 bytes) version

71.43% (+15 bytes) inittab

-21.57% (-22 bytes) passwd

-3.45% (-3 bytes) start

100.00% (+12 bytes) fstab

100.00% (+12 bytes) group

-22.73% (-20 bytes) inetd.conf

-26.11% (-41 bytes) flatfsd

-12.00% (-12 bytes) hostname

9.68% (+6 bytes) inittab

118.18% (+13 bytes) mtab

115.38% (+15 bytes) passwd

-35.07% (-121 bytes) rc

68.42% (+13 bytes) S02flatfsd

60.00% (+12 bytes) S30hostname

55.56% (+10 bytes) resolv.conf

300.00% (+12 bytes) sbin

150.00% (+12 bytes) tmp

Everything: 836 kilobytes

Super block: 76 bytes

CRC: 2fa74770

………………………………………………………………………………………………

……………………………output of hyper terminal is as………………………………

Bootloader: Processed (0x)00018a84 S-records

Executing program starting at address: 24000000

Linux version 2.4.32-uc0 (root@localhost) (gcc version 3.4.1 ( Xilinx EDK 8.1 Bu

ild EDK_I.17 121005 )) #43 Fri Mar 24 09:08:29 IST 2006

On node 0 totalpages: 16384

zone(0): 16384 pages.

zone(1): 0 pages.

zone(2): 0 pages.

CPU: MICROBLAZE

Kernel command line: rootfstype=romfs root=/dev/mtd/9

Console: xmbserial on UARTLite

Calibrating delay loop... 33.07 BogoMIPS

Memory: 64MB = 64MB total

Memory: 63124KB available (662K cod

Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)

Inode cache hash table entries: 4096 (order: 3, 32768 bytes)

Mount cache hash table entries: 512 (order: 0, 4096 bytes)

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

Page-cache hash table entries: 16384 (order: 4, 65536 bytes)

POSIX conformance testing by UNIFIX

Linux NET4.0 for Linux 2.4

Based upon Swansea University Computer Society NET3.039

Microblaze UARTlite serial driver version 1.00

ttyS0 at 0x40600000 (irq = 8) is a Microblaze

Starting kswapd

devfs: v1.12c (20020818) Richard Gooch (rgooch@xxxxxxxxxxxxx)

devfs: devfs_debug: 0x0

devfs: boot_options: 0x1

RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize

uclinux[mtd]: RAM probe address=0x240d7668 size=0xd2000

mtd: Giving out device 0 to RAM

uclinux[mtd]: root filesystem index=0

MicroBlaze auto-config flash probe(0x22000000,8388608,4): 800000 at 22000000

cfi_cmdset_0001: Erase suspend on write enabled

0: offset=0x0,size=0x40000,blocks=32

Using buffer write method

Creating 8 MTD partitions on "Flash":

0x00000000-0x00004000 : "Bootloader"

mtd: partition "Bootloader" doesn't end on an erase block -- force read-only

mtd: Giving out device 1 to Bootloader

0x00004000-0x00008000 : "Bootargs"

mtd: partition "Bootargs" doesn't start on an erase block boundary -- force read-only

mtd: Giving out device 2 to Bootargs

0x00008000-0x0000c000 : "MAC"

mtd: partition "MAC" doesn't start on an erase block boundary -- force read-only

mtd: Giving out device 3 to MAC

0x00010000-0x00020000 :

mtd: partition "Config" doesn't start on an erase block boundary -- force read-only

mtd: Giving out device 4 to Config

0x0000c000-0x00010000 : "Spare"

mtd: partition "Spare" doesn't start on an erase block boundary -- force read-only

mtd: Giving out device 5 to Spare

0x00100000-0x00400000 : "Image"

mtd: Giving out device 6 to Image

0x00400000-0x00800000 : "JFFS2"

mtd: Giving out device 7 to JFFS2

0x00000000-0x00800000 : "Flash"

mtd: Giving out device 8 to Flash

MicroBlaze auto-config ram probe(0x240d7668,860160,

Creating 1 MTD partitions on "RAM":

0x00000000-0x000d2000 : "Romfs"

mtd: Giving out device 9 to Romfs

******* debug code written by us (not in the source) *****

VFS: test name = </dev/root>

VFS: fs_name = <romfs>

VFS: root name <1f:09>

VFS: tried fs_name = <romfs> err= 0

************** end of our debug code *******************

VFS: Mounted root (romfs filesystem) readonly.

Mounted devfs on /dev

Freeing init memory: 44K

Mounting proc:

Mounting var:

Populating /var:

Running local start scripts.

Mounting /etc/config:

Populating /etc/config:

flatfsd: Nonexistent or bad flatfs (-48), creating new one...

flatfsd: Failed to write flatfs (-48): No such file or directory

flatfsd: Created 3 configuration files (142 bytes)

Setting hostname:

tuy

init: /bin/agetty respawning too fast

Waiting for your help.

Thanking you.

-- Pallav Joshi

[microblaze-uclinux] Queries regarding booting uClinux kernel on ML402 board of xilinx with microblaze