jffs2 Empty Flash warning - pengutronics BSP

miniarm

2012-10-05 07:18:25

Hi,

I am using Pengutronics BSP for mini2440. I have ported all component
(rootfs, kernel, bootloader) successfully. but before mounting I am getting
Empty flash warning.

Please check the kernel log below.

dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
IP-Config: Complete:
     device=eth0, addr=192.168.1.156, mask=255.255.255.0, gw=192.168.1.1,
     host=192.168.1.156, domain=, nis-domain=(none),
     bootserver=192.168.1.232, rootserver=192.168.1.232, rootpath=

Empty flash at 0x0171c2ec ends at 0x0171c800

VFS: Mounted root (jffs2 filesystem) on device 31:3.
devtmpfs: mounted
Freeing init memory: 104K

As I am trying to use this board in industrual environment, will this
warning will be harmfull?

Is there any way to get rid out of this warning?

Please let me know further.

--
miniarm

davef

2012-10-05 08:29:01

Suggest you give us the whole boot log.  Maybe, something is wrong before
your quoted text as it all looks the same as mine . . . except I don't get
the:

Empty flash line

Juergen Beisert

2012-10-05 09:22:21

Take a look:

|<---------- whole flash partition ------------->|
|<---- jffs2 image ----->|<---- still empty ---->|

If you erase the whole flash partition and then write the jffs2 image to
the flash, only a part of the empty space contains the image. What you see
is the message because JFFS2 finds the end of the image and then more
"unformatted" space behind it. You can ignore this message, as JFFS2 than
starts automatically to add the empty space the filesystem.

miniarm

2012-10-05 10:13:32

@davef, @juergen,

Thank you for the time and explanation. I did the same step as mentioned in
 pdf.

Please find the complete log.


CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: MINI2440
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, Copyright 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: console=ttySAC0,115200 mini2440=1tbc
ip=192.168.1.156:192.168.1.232:192.168.1.1:255.255.255.0:::
root=/dev/mtdblock3 rootfstype=jffs2 n)
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 62144k/62144k available, 3392k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    DMA     : 0xffc00000 - 0xffe00000   (   2 MB)
    vmalloc : 0xc4800000 - 0xf6000000   ( 792 MB)
    lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
    modules : 0xbf000000 - 0xc0000000   (  16 MB)
      .text : 0xc0008000 - 0xc026ad0c   (2444 kB)
      .init : 0xc026b000 - 0xc0285000   ( 104 kB)
      .data : 0xc0286000 - 0xc029fd80   ( 104 kB)
       .bss : 0xc029fda4 - 0xc02b9fcc   ( 105 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:85
irq: clearing pending ext status 00000080
irq: clearing subpending status 00000002
Calibrating delay loop... 201.52 BogoMIPS (lpj=503808)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
NET: Registered protocol family 16
MINI2440: Option string mini2440=1tbc
MINI2440: LCD
 0:240x320
 [1:800x480]
 2:1024x768
 3:240x320
 4:640x480
 5:240x320
 6:320x240
 7:480x272

S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C24XX DMA Driver, Copyright 2003-2006 Simtec Electronics
DMA channel 0 at c4804000, irq 33
DMA channel 1 at c4804040, irq 34
DMA channel 2 at c4804080, irq 35
DMA channel 3 at c48040c0, irq 36
S3C244X: Clock Support, DVS off
s3c24xx-pwm s3c24xx-pwm.0: tin at 98876, tdiv at 98876, tin=divclk, base 0
S3C24XX CPU Frequency driver, s3c244x cpu support
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c-i2c s3c2440-i2c: slave address 0x10
s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (extended precision)
s3c-adc s3c24xx-adc: attached adc driver
JFFS2 version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
msgmni has been set to 121
io scheduler noop registered
io scheduler cfq registered (default)
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
console [ttySAC0] enabled
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 16 bytes/write
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c24xx-nand s3c2440-nand: Tacls=1, 9ns Twrph0=3 29ns, Twrph1=2 19ns
s3c24xx-nand s3c2440-nand: NAND hardware ECC
s3c24xx-nand s3c2440-nand: Using flash based BBT
NAND device: Manufacturer ID: 0xec, Chip ID: 0xd3 (Samsung NAND 1GiB 3,3V
8-bit)
4 cmdlinepart partitions found on MTD device nand
Creating 4 MTD partitions on "nand":
0x000000000000-0x000000080000 : "barebox"
0x000000080000-0x0000000e0000 : "bareboxenv"
0x0000000e0000-0x0000002e0000 : "kernel"
0x0000002e0000-0x000040000000 : "root"
s3c24xx-nand s3c2440-nand: clock idle support enabled
dm9000 Ethernet Driver, V1.31
dm9000 dm9000: eth%d: Invalid ethernet MAC address. Please set using
ifconfig
eth0: dm9000e at c487a300,c487c304 IRQ 51 MAC: a6:27:9f:53:9d:ac (random)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
samsung-ts s3c2440-ts: driver attached, registering input device
input: S3C24XX TouchScreen as /devices/virtual/input/input0
input: pwm-beeper as
/devices/platform/s3c24xx-pwm.0/pwm-beeper/input/input1
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
cpuidle: using governor ladder
s3c-sdi s3c2440-sdi: powered down.
s3c-sdi s3c2440-sdi: mmc0 - using pio, hw SDIO IRQ
TCP cubic registered
NET: Registered protocol family 17
s3c-rtc s3c2410-rtc: setting system clock to 2000-01-04 02:05:54 UTC
(946951554)
dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
IP-Config: Complete:
     device=eth0, addr=192.168.1.156, mask=255.255.255.0, gw=192.168.1.1,
     host=192.168.1.156, domain=, nis-domain=(none),
     bootserver=192.168.1.232, rootserver=192.168.1.232, rootpath=
VFS: Mounted root (jffs2 filesystem) on device 31:3.
devtmpfs: mounted
Freeing init memory: 104K
init started: BusyBox v1.18.5 (2012-10-03 17:51:06 IST)
starting pid 267, tty '/dev/console': '/etc/init.d/rcS'
mounting filesystems...done.
running rc.d services...
Starting telnetd...
starting network interfaces...
ip: RTNETLINK answers: File exists
loading modules
/etc/rc.d/S99startup: line 12: /usr/bin/qt4-demo: not found
starting pid 291, tty '/dev/console': '/sbin/getty -L 115200 ttySAC0 vt100'


Here is the complete log.

I am using mini2440 1GB nand Flash. I have chosen 128M configuration in
pengutronics. 

One more thing I wanted to know is How to run led program with the newer
kernel? for ex. I want to test led/pwm, linux from friendly arm comes with
the sample example. If I try to compile the same program then it gives me
ioctl error, as ioctl has been removed in newer kernel.

--ioctl error --
190:5: error: unknown field 'ioctl' specified in initializer

All my intention is to use pengutronics BSP for mini2440 and at the same
time I want to run led and pwm example from user space using ioctl method,
to turn led on/off rathar than from /sys/class interface.

Please guide me in right direction.

Thank You for your time.

akka

2013-10-23 10:20:27

Dear all,

I need help from you all.
I am new and started working on board/kit (ARM9
s3c2410,smdk2410,ARM902T,64MB Flash.)
I am trying to transplant U-boot 2012.10 to this samsung s3c2410 board.
I am not able to do this.
Can you help me with any doucment how to do this.
Can you provide if you have any U-boot.bin file for this board.
Any Uboot source code modified to run on this board.

kindly help me i am struggling for one year for this.

mail id:aprakash@ueic.com

Juergen Beisert

2013-10-23 18:08:07

Hard to help you with non FriendlyARM hardware...
You should ask your board vendor instead.