JFFS2 kernel support

Hello eyguacel !!!!

i have the same problem.....:(

do you solve it ?????

tks

The solution is here:

http://www.alterawiki.com/wiki/jffs2_for_linux

So you have to install these mentioned package on your linux desktop system.

Urmel

Thanks very much Urmel !!!!!!! \o/

i have success compiling the kernel ..........

i add this file system in config.c => mtd_partition nios2_partitions[]

{

.name = "fpga",

.size = 0x0200000,

.offset = 0x0,

},

{

.name = "nios_baremetal",

.size = 0x0200000,

.offset = 0x01C00000,

},

{

.name = "uImage1",

.size = 0x00400000,

.offset = 0x02000000,

},

{

.name = "romfs",

.size = 0x01400000,

.offset = 0x04400000,

}

but in uClinux booting i have this problem

physmap platform flash device: 04000000 at 0c000000

physmap-flash physmap-flash.0: map_probe failed

do you have any ideia ????????

thank you so much !!!!!

Hi Franz,

you are welcome.

Can you also post the complete boot message concerning the implementation of the jffs2? For example the block size (16 or 8 bit) could be a reason.

But for simplicity I would just add only one or two partitions so it is easier to look for a possible error in flash size and offset.

Urmel

Hello Urmel!!!! hw r u???

i have success mounting the filesystem .......

when linux booting from a ram i have this result take a look

/> Uncompressing Linux... Ok, booting the kernel.
Linux version 2.6.30 (franz@franz-desktop) (gcc version 3.4.6)# 754 PREEMPT Mon May 2 09:37:56 BRT 2011
uClinux/Nios II
Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 32512
Kernel command line: root=/dev/mtdblock2 rw rootfstype=jffs2
NR_IRQS:32
PID hash table entries: 512 (order: 9, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory available: 128108k/1825k RAM, 0k/0k ROM (1554k kernel code, 270k data)
Calibrating delay loop... 31.02 BogoMIPS (lpj=155136)
Mount-cache hash table entries: 512
net_namespace: 264 bytes
NET: Registered protocol family 16
init_BSP(): registering device resources
bio: create slab <bio-0> at 0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler deadline registered (default)
Device /dev/lcd16207 registered
ttyS0 at MMIO 0x8002140 (irq = 2) is a Altera UART
console  enabled
eth0: Open Ethernet Core Version 1.0
  oeth_probe: 62500 Khz Nios: 16 RX, 16 TX buffs
              NO Custom HW ALIGN.
              CONFIG_NIOS2_HW_MULX    NOT defined.
              CONFIG_NIOS2_HW_MUL_OFF NOT defined.
              BMCR = ffffh.
physmap platform flash device: 04000000 at 0c000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
 Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: 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.
cmdlinepart partition parsing not available
RedBoot partition parsing not available
Using physmap partition information
Creating 9 MTD partitions on "physmap-flash.0":
0x000000000000-0x000002800000 : "userspace"
0x000002800000-0x000002900000 : "U-Boot"
0x000002900000-0x000002d00000 : "uImage1"
0x000002d00000-0x000003100000 : "uImage2"
0x000003100000-0x000003500000 : "uImage3"
0x000003500000-0x000003880000 : "DEFAULT_MMU"
0x000003880000-0x000003c00000 : "MAXIMUM_MMU"
0x000003c00000-0x000003f80000 : "USER_IMAGE"
0x000003f80000-0x000003fa0000 : "options-bits"
TCP cubic registered
NET: Registered protocol family 17
Empty flash at 0x0000fffc ends at 0x00010000
CLEANMARKER node found at 0x00010000, not first node in block (0x00000000)
CLEANMARKER node found at 0x00030000, not first node in block (0x00020000)
CLEANMARKER node found at 0x00050000, not first node in block (0x00040000)
CLEANMARKER node found at 0x00070000, not first node in block (0x00060000)
CLEANMARKER node found at 0x00090000, not first node in block (0x00080000)
Empty flash at 0x000afffc ends at 0x000b0000
CLEANMARKER node found at 0x000b0000, not first node in block (0x000a0000)
Empty flash at 0x000cfffc ends at 0x000d0000
CLEANMARKER node found at 0x000d0000, not first node in block (0x000c0000)
VFS: Mounted root (jffs2 filesystem) on device 31:2.
Freeing unused kernel memory: 56k freed (0x1ba000 - 0x1c7000)
Shell invoked to run file: /etc/rc
Command: hostname uClinux
Command: mount -t proc proc /proc -o noexec,nosuid,nodev
Command: mount -t sysfs sysfs /sys -o rw
Command: mount -t devpts devpts /dev/pts -o noexec,nosuid
Command: mkdir /var/tmp
/var/tmp: File exists
Command: mkdir /var/log
/var/log: File exists
Command: mkdir /var/run
/var/run: File exists
Command: mkdir /var/lock
/var/lock: File exists
Command: mkdir /var/empty
/var/empty: File exists
Command: ifconfig lo 127.0.0.1
Command: route add -net 127.0.0.0 netmask 255.0.0.0 lo
Command: ifconfig eth0 192.168.100.137 netmask 255.255.255.0
oeth_phymac_synch:eth0  MR1: 0x0000FFFF
                               Jabber
                               Remote Fault
                               Autoneg'd
             Link OK: MODER: 0x0000A040
             FullD
             100BASE-TX
Command: boa &
Command: cat /etc/motd
Welcome to
          ____ _  _
         /  __| ||_|
    _   _| |  | | _ ____  _   _  _  _
   | | | | |  | || |  _ \| | | |\ \/ /
   | |_| | |__| || | | | | |_| |/    
   |  ___\____|_||_|_| |_|\____|\_/\_/
   | |
   |_|
For further information check:
http://www.uclinux.org/
Command:
Execution Finished, Exiting
Sash command shell (version 1.1.1)
/>  boa: server version Boa/0.94.14rc21
 boa: server built Apr 29 2011 at 14:45:45.
 boa: starting server pid=25, port 80

but i have problem when i try booting from a flash ........ i have this error

Uncompressing Linux...
ERROR
invalid compressed format (err=2)
 -- System halted

i don´t know what cause this...........

my flash is at 0x0c000000 to 0x0fffffff in sopc builder

my linux cpu reset vector offset is 0x02000000 (start at 0x0e000000)

in make menuconfig i put 0x02000000 offset

i will post the commands i use to program the flash ok!!!

do you know what can i do to fix this????

thank you very much

Franz Wagner

Hello all !!!! good news!!!!!!!!

now i have success booting from the flash ....!!!! \o/

i use this commands

elf2flash --base=0x0c000000 --end=0x10000000 --reset=0xe000000 --boot=~/altera/10.1/nios2eds/components/altera_nios2/boot_loader_cfi.srec --input=zImage --output=zImage.flash --verbose

and

nios2-flash-programmer --base=0xc000000 zImage.flash --instance=0 -g

and it works !!!!!

and now another problem.......

my system is a multicore system ........ i have 2 cpus in my project

i one cpu i running the uClinux... and another cpu i running nios2 with the an374 from altera......

its everything works fine .....

but now i have to writing in flash the nios2 software...........

another cpu have a reset vector with offset 0x1c00000

how can i write the software without loose linux software...?????

thank you very much ....

Franz Wagner

Are you suggesting that the other CPU does not use an OS at all ?

If the CPUs don't share any resources this should work. Of course here the second CPU needs its own dedicated address spaces on the Avalon bus and accordingly a different reset vector.

If the CPUs are supposed to share any addresses (and thus be able to communicate), things will get more complicated and you should start a new forum thread on this.

-Michael

Hi Michael !!!! thanks for reply....!!!

well the 2 cpus share many things but this is work fine !!!!

i have success doing the uclinux boot from the flash but now i

tying to download to flash a software of another cpu where run the an374....

i do that but now the uclinux cant start......... the an374 starts but another cpu show this...

Uncompressing Linux....
  ERROR
crc error
--System halted

I think it might be the mapping memory in config.c......

what do you think???

i use the default parameters....

    {
     .name = "userspace",
     .size =   0x02800000, /* 40Mb */
     .offset = 0x00000000,
    },
    {
     .name = "U-Boot",
     .size =   0x00100000, 
     .offset = 0x02800000,
    },
    {
     .name = "uImage1",
     .size =   0x00400000, 
     .offset = 0x02900000,
    },
    {
     .name = "uImage2",
     .size =   0x00400000, 
     .offset = 0x02d00000,
    },
    {
     .name = "uImage3",
     .size =   0x00400000, 
     .offset = 0x03100000,
    },
    
    {
     .name = "DEFAULT_MMU",
     .size =   0x00380000,
     .offset = 0x03500000,
     },
    {
     .name = "MAXIMUM_MMU",
     .size =   0x00380000,
     .offset = 0x03880000,
     },
    {
     .name = "USER_IMAGE",
     .size =   0x00380000,
     .offset = 0x03c00000,
     },
    {
      .name = "options-bits",
      .size =   0x00020000,
      .offset = 0x03f80000,
    }

thank you very much!!!!!!

sorry for my poor english.......

Franz Wagner

If both CPUs try to start Linux, things are going very wrong. This can't work as the NIOS Linux is not SMP enabled and will not be in forseeable future, as the NIOS CPU lacks many features necessary for SMP support.

There might be some threads on multiple CPUs here, you might want to read them.

And for questions you should start a thread with an appropriate subject line.

-Michael

Hi Michael!!! thanks to reply........

do you have a cyclone iii developer board??? if yes i will send to you the .sof zImage and .elf of project to you see how that is working..........

i will post a new thead

thank you

Franz Wagner