how to Acess memory in embedded linux Based cobra5329 BSP ??

[zawii87]

Hello Members,

Can any one please explain me that how can we access the in built memory to save our program on embedded Linux based cobra5329 board support package which is based on MCF5329 coldfire processor.

Also there is option to put extra memory card into the board . How Can I access this and save my program on to it because every time I shut down my system I have to download the program again to my board. This is too much time consuming and also rubbish !

There is no manual support comes with this board that how to do this . Can any one please explain me and guide me about this.

Thanks

[atreyu]

Hello Members,

Can any one please explain me that how can we access the in built memory to save our program on embedded Linux based cobra5329 board support package which is based on MCF5329 coldfire processor.

By built-in memory, do you mean the on-board Flash memory (typically 16MB upgradable to 64MB)? That should be as easy as just saving files directly to the filesystem.

Also there is option to put extra memory card into the board . How Can I access this and save my program on to it because every time I shut down my system I have to download the program again to my board.

I assume it is an SDCard interface? If so, when you insert the card, a block device should be created for it by the kernel (hopefully) and will appear as /dev/mmcblk0 or something. Look at the output of dmesg after you insert it. On one of my ARM boards, my SD Card was represented as /dev/mmcblk0 and the first partition was mccblk0p1, which I formatted as VFAT.

Once I had a mountable partition, it was as simple as putting this in /etc/fstab:

/dev/mmcblk0p1 /mnt/sdcard vfat defaults 1 2

Make sure the dir exists:

mkdir -p /mnt/sdcard

Then test it out:

mount -a

That should mount the card (if that is truly the device name and it is formatted, etc.).

hth

[zawii87]

yes talking about the in built flash memory on the board . How to access it and how to store my downloaded application to my in built flash memory ?

The file system in the "dev" folder appears like this

# ls
zero ttyp3 sda1 ram3 ptyp5 mtdr0 mem
urandom ttyp2 sda ram2 ptyp4 mtdblock6 kmem
ttypf ttyp1 rtc ram1 ptyp3 mtdblock5 i2c0
ttype ttyp0 rom9 ram0 ptyp2 mtdblock4 fb0
ttypd ttyS1 rom8 ptypf ptyp1 mtdblock3 cua1
ttypc ttyS0 rom7 ptype ptyp0 mtdblock2 cua0
ttypb tty3 rom6 ptypd psaux mtdblock1 console
ttypa tty2 rom5 ptypc null mtd6 can0
ttyp9 tty1 rom4 ptypb mtdr6 mtd5 adc1
ttyp8 tty0 rom3 ptypa mtdr5 mtd4 adc0
ttyp7 tty rom2 ptyp9 mtdr4 mtd3 mtdblock0
ttyp6 sda4 rom1 ptyp8 mtdr3 mtd2
ttyp5 sda3 rom0 ptyp7 mtdr2 mtd1
ttyp4 sda2 random ptyp6 mtdr1 mtd0



Also there is an MMC card slot in the board and when i insert it the the file list in the dev folder remains same as I checked

# ls
zero ttyp3 sda1 ram3 ptyp5 mtdr0 mem
urandom ttyp2 sda ram2 ptyp4 mtdblock6 kmem
ttypf ttyp1 rtc ram1 ptyp3 mtdblock5 i2c0
ttype ttyp0 rom9 ram0 ptyp2 mtdblock4 fb0
ttypd ttyS1 rom8 ptypf ptyp1 mtdblock3 cua1
ttypc ttyS0 rom7 ptype ptyp0 mtdblock2 cua0
ttypb tty3 rom6 ptypd psaux mtdblock1 console
ttypa tty2 rom5 ptypc null mtd6 can0
ttyp9 tty1 rom4 ptypb mtdr6 mtd5 adc1
ttyp8 tty0 rom3 ptypa mtdr5 mtd4 adc0
ttyp7 tty rom2 ptyp9 mtdr4 mtd3 mtdblock0
ttyp6 sda4 rom1 ptyp8 mtdr3 mtd2
ttyp5 sda3 rom0 ptyp7 mtdr2 mtd1
ttyp4 sda2 random ptyp6 mtdr1 mtd0

the output of the dmsg looks like this

Linux version 2.6.17-uc0 (root@bserv) (gcc version 3.4.3 (Emlix Linux 3.4.3-6))
#1 Tue Nov 14 12:34:36 UTC 2006


uClinux/COLDFIRE(m532x)
COLDFIRE port done by Greg Ungerer, gerg@snapgear.com
Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne
On node 0 totalpages: 4064
Normal zone: 4064 pages, LIFO batch:0
Built 1 zonelists
Kernel command line: rootfstype=romfs console=tty1 console=ttyS0,115200 video=m5
32xfb:mode:320x240@60,yres_virt:720
PID hash table entries: 64 (order: 6, 256 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
Memory available: 10240k/16256k RAM, (1546k kernel code, 315k data)
Calibrating delay loop... 158.92 BogoMIPS (lpj=794624)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
USB-MCF532x: (HOST module) EHCI device is registered
USB-MCF532x: (OTG module) EHCI device is registered
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
NET: Registered protocol family 2
IP route cache hash table entries: 128 (order: -3, 512 bytes)
TCP established hash table entries: 512 (order: -1, 2048 bytes)
TCP bind hash table entries: 256 (order: -2, 1024 bytes)
TCP: Hash tables configured (established 512 bind 256)
TCP reno registered
JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc.
io scheduler noop registered (default)
Initing M532x Framebuffer
Console: switching to colour frame buffer device 40x30
fb0: M532x FB frame buffer device
ISA-Philips-Basic-CAN memory mapped CAN Driver 3.0_ColdFire_FlexCAN (c) Nov 14 2
006 12:34:06
ColdFire internal UART serial driver version 1.00
ttyS0 at 0xfc060000 (irq = 90) is a builtin ColdFire UART
ttyS1 at 0xfc064000 (irq = 91) is a builtin ColdFire UART
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
FEC ENET Version 0.2
fec: PHY @ 0x1, ID 0x20005c90 -- DP83848
eth0: ethernet ac:de:48:53:29:01
uclinux[mtd]: RAM probe address=0x401f188c size=0x3e7000
Creating 1 MTD partitions on "RAM":
0x00000000-0x003e7000 : "ROMfs"
uclinux[mtd]: set ROMfs to be root filesystem
Cobra5329 flash device: 2000000 at 0
COBRA5329Flash: Found 1 x16 devices at 0x0 in 16-bit bank
COBRA5329Flash: Found an alias at 0x1000000 for the chip at 0x0
Amd/Fujitsu Extended Query Table at 0x0040
COBRA5329Flash: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
Creating 3 MTD partitions on "COBRA5329Flash":
0x00000000-0x00100000 : "bootloader"
0x00100000-0x00700000 : "kernel"
0x00700000-0x01000000 : "data"
QSPI: spi->max_speed_hz 9600000
QSPI: Baud set to 4
COLDFIRE-QSPI: probed and master registered
ADC122S101 registered
usbmon: debugfs is not available
MCF532x USB EHCI: is found. ID=0x5 Rev=0x41
ehci ehci.1: EHCI Host Controller
ehci ehci.1: new USB bus registered, assigned bus number 1
ehci ehci.1: irq 176, io mem 0xfc0b4000
ehci ehci.1: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
MCF532x USB EHCI: is found. ID=0x5 Rev=0x41
ehci ehci.0: EHCI Host Controller
ehci ehci.0: new USB bus registered, assigned bus number 2
ehci-mcf532x: can't find transceiver!
ehci ehci.0: can't setup
ehci ehci.0: USB bus 2 deregistered
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
x1205 0-006f: chip found, driver version 1.0.7
x1205 0-006f: rtc intf: dev (254:0)
x1205 0-006f: rtc core: registered x1205 as rtc0
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
x1205 0-006f: setting the system clock to 2496-12-17 00:20:22 (3744420934)
VFS: Mounted root (romfs filesystem) readonly.
Freeing unused kernel memory: 72k freed (0x401bb000 - 0x401cc000)
eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX.
VFS: Can't find a romfs filesystem on dev mtdblock3.

[atreyu]

Regarding your onboard flash, just try making a directory somewhere (like "mkdir -p /opt/myfiles/") and saving your files there (how you get the on there is another question perhaps - scp, ftp, etc.).

As to the MMC card:
1. did you run that dmesg command AFTER you inserted the card?

2. do you know that this board/kernel supports MMC cards?

3. do you know that MMC card to be good?

[zawii87]

when I do mkdir it gives me the following reply

BusyBox v1.00 (2006.11.14-12:36+0000) multi-call binary

Usage: mkdir [OPTION] DIRECTORY...

but I don't how to create my own folder to save my file there ??

[zawii87]

As to the MMC card:
1. did you run that dmesg command AFTER you inserted the card?

2. do you know that this board/kernel supports MMC cards?

3. do you know that MMC card to be good?

and yes I run the command after inserting MMC card I just again run it and that the output

# dmesg
Linux version 2.6.17-uc0 (root@bserv) (gcc version 3.4.3 (Emlix Linux 3.4.3-6))
#1 Tue Nov 14 12:34:36 UTC 2006


uClinux/COLDFIRE(m532x)
COLDFIRE port done by Greg Ungerer, gerg@snapgear.com
Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne
On node 0 totalpages: 4064
Normal zone: 4064 pages, LIFO batch:0
Built 1 zonelists
Kernel command line: rootfstype=romfs console=tty1 console=ttyS0,115200 video=m5
32xfb:mode:320x240@60,yres_virt:720
PID hash table entries: 64 (order: 6, 256 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
Memory available: 10240k/16256k RAM, (1546k kernel code, 315k data)
Calibrating delay loop... 158.92 BogoMIPS (lpj=794624)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
USB-MCF532x: (HOST module) EHCI device is registered
USB-MCF532x: (OTG module) EHCI device is registered
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
NET: Registered protocol family 2
IP route cache hash table entries: 128 (order: -3, 512 bytes)
TCP established hash table entries: 512 (order: -1, 2048 bytes)
TCP bind hash table entries: 256 (order: -2, 1024 bytes)
TCP: Hash tables configured (established 512 bind 256)
TCP reno registered
JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc.
io scheduler noop registered (default)
Initing M532x Framebuffer
Console: switching to colour frame buffer device 40x30
fb0: M532x FB frame buffer device
ISA-Philips-Basic-CAN memory mapped CAN Driver 3.0_ColdFire_FlexCAN (c) Nov 14 2
006 12:34:06
ColdFire internal UART serial driver version 1.00
ttyS0 at 0xfc060000 (irq = 90) is a builtin ColdFire UART
ttyS1 at 0xfc064000 (irq = 91) is a builtin ColdFire UART
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
FEC ENET Version 0.2
fec: PHY @ 0x1, ID 0x20005c90 -- DP83848
eth0: ethernet ac:de:48:53:29:01
uclinux[mtd]: RAM probe address=0x401f188c size=0x3e7000
Creating 1 MTD partitions on "RAM":
0x00000000-0x003e7000 : "ROMfs"
uclinux[mtd]: set ROMfs to be root filesystem
Cobra5329 flash device: 2000000 at 0
COBRA5329Flash: Found 1 x16 devices at 0x0 in 16-bit bank
COBRA5329Flash: Found an alias at 0x1000000 for the chip at 0x0
Amd/Fujitsu Extended Query Table at 0x0040
COBRA5329Flash: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
Creating 3 MTD partitions on "COBRA5329Flash":
0x00000000-0x00100000 : "bootloader"
0x00100000-0x00700000 : "kernel"
0x00700000-0x01000000 : "data"
QSPI: spi->max_speed_hz 9600000
QSPI: Baud set to 4
COLDFIRE-QSPI: probed and master registered
ADC122S101 registered
usbmon: debugfs is not available
MCF532x USB EHCI: is found. ID=0x5 Rev=0x41
ehci ehci.1: EHCI Host Controller
ehci ehci.1: new USB bus registered, assigned bus number 1
ehci ehci.1: irq 176, io mem 0xfc0b4000
ehci ehci.1: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
hub 1-0:1.0: 1 port detected
ehci ehci.0: EHCI Host Controller
ehci ehci.0: new USB bus registered, assigned bus number 2
ehci-mcf532x: can't find transceiver!
ehci ehci.0: can't setup
ehci ehci.0: USB bus 2 deregistered
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
x1205 0-006f: chip found, driver version 1.0.7
x1205 0-006f: rtc intf: dev (254:0)
x1205 0-006f: rtc core: registered x1205 as rtc0
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
x1205 0-006f: setting the system clock to 2496-12-17 00:20:22 (3744420934)
VFS: Mounted root (romfs filesystem) readonly.
Freeing unused kernel memory: 72k freed (0x401bb000 - 0x401cc000)
eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX.
VFS: Can't find a romfs filesystem on dev mtdblock3.
#

And as far as the support for the kernel is concerned I don't have any idea about it . There is nothing any document comes with it which states
anything . But if it has MMC slot in it then it should response to it !

and as far as MMC card, it's just newly opened from the pack

[atreyu]

as to the mkdir command, just leave off the "-p" (the busybox version of mkdir probably doesn't support that switch, e.g.:

mkdir /opt
mkdir /opt/mydir/

as to MMC support in the kernel: just b/c the board has an MMC interface does not mean the OS (i.e., kernel) has support - though I agree with you that I does indicate that there is a good chance that it does. can you post a website link to your exact board from the manufacturer or vendor?

unfortunately, i don't have access to the ARM board that had MMC connectivity so I can't trouble-shoot your problem myself any better.

[zawii87]

as to the mkdir command, just leave off the "-p" (the busybox version of mkdir probably doesn't support that switch, e.g.:

mkdir /opt
mkdir /opt/mydir/

This happen when I try to rum the upper command


Usage: mkdir [OPTION] DIRECTORY...

# mkdir /opt/mkdir
mkdir: Cannot create directory `/opt/mkdir': Read-only file system

[atreyu]

bummer! so their root filesystem is read-only then (or perhaps just /var or /tmp are writable?). I guess you'll have to get the SD Card working. Do you have a mfr link?

[zawii87]

How I need to make MMC card work ...That is the question .
and what mfr link ...what is this i dont have any idea about it