Re: [fedora-arm] How to debug: Initramfs unpacking failed: junk in compressed archive

[Alex Villací­s Lasso]

El 22/10/13 18:41, Jon escribió:
>  Here is how I generate the ramdisk
>
>  mkimage -A arm -O linux -T ramdisk -C none -a 0x00000000 -e 0x00000000
>  -n "ramdisk" -d /boot/initramfs-X.YY.Z-foo.fcNN.armv5.img /tmp/uImage
>
>  Note the address and entry point are zeros.
>
>  On your board's u-boot environment just run the 'bdi' command (board
>  info) to findout the start addr and size.
>  You can workout load addr's that make your boot happy.
>
>  I would advise loading the ramdisk first, in the begining space of the
>  memory... then load the kernel.
>  That way if there is any overlap it will be the ramdisk that is
>  corrupted, not the  kernel memory.
>
>  Regards,
>  -Jon Disnard
>
>  On Tue, Oct 22, 2013 at 4:06 PM, Alex Villací­s Lasso
>  <a_villacis(a)palosanto.com&gt; wrote:
> > I am working on this davinci-based ARMv5 board. This board runs Fedora 15
> > armv5tel with a kernel package I compiled myself for the board. The boot SD
> > contains a FAT partition with the uImage kernel, and a ext4 filesystem that
> > contains the root filesystem. Up to now, I can run the kernel and boot the
> > system without an initramfs by adding "root=/dev/mmcblk0p2 rw rootwait" to
> > the kernel command line. So far, it works fine.
> >
> > [root@elx ~]# cat /proc/cpuinfo
> > Processor    : ARM926EJ-S rev 5 (v5l)
> > BogoMIPS    : 227.32
> > Features    : swp half thumb fastmult edsp java
> > CPU implementer    : 0x41
> > CPU architecture: 5TEJ
> > CPU variant    : 0x0
> > CPU part    : 0x926
> > CPU revision    : 5
> >
> > Hardware    : DaVinci DA850/OMAP-L138/AM18x EVM
> > Revision    : 0000
> > Serial        : 0000000000000000
> >
> >
> > Now, I want to change the filesystem layout. I want to put all of /usr in a
> > separate partition, and mount this read-only. For this, I want to boot the
> > board using an initramfs. So, I ran the following command with the FAT
> > partition mounted on /uboot:
> >
> >
> > [root@avillacis arm]# mkimage -A arm -T ramdisk -C none -a 0xc2000000 -n
> > "mcuzone-initramfs-3.5.6-1.fc17" -d
> > /run/media/alex/rootfs/boot/initramfs-3.5.6-1.elastixarm.fc17.armv5tel.mcuzone.img
> > /run/media/alex/BOOT/initramfs-mcuzone.img
> > Image Name:   mcuzone-initramfs-3.5.6-1.fc17
> > Created:      Tue Oct 22 14:23:48 2013
> > Image Type:   ARM Linux RAMDisk Image (uncompressed)
> > Data Size:    7861729 Bytes = 7677.47 kB = 7.50 MB
> > Load Address: c2000000
> > Entry Point:  c2000000
> >
> > BTW, the kernel uImage is set to load at 0xc0008000. The board has system
> > RAM from 0xc0000000 to 0xd0000000.
> >
> > In the bootloader, after a few experiments, I found out that, while it will
> > load the initramfs uImage, the bootlader will not add an ATAG describing the
> > initramfs in any way. I checked:
> >
> > [root@elx ~]# hexdump -C /proc/atags
> > 00000000  05 00 00 00 01 00 41 54  00 00 00 00 00 00 00 00
> > |......AT........|
> > 00000010  00 00 00 00 03 00 00 00  07 00 41 54 00 00 00 00
> > |..........AT....|
> > 00000020  04 00 00 00 02 00 41 54  00 00 00 10 00 00 00 c0
> > |......AT........|
> > 00000030  13 00 00 00 09 00 41 54  72 6f 6f 74 3d 2f 64 65
> > |......ATroot=/de|
> > 00000040  76 2f 6d 6d 63 62 6c 6b  30 70 32 20 72 77 20 72 |v/mmcblk0p2 rw
> > r|
> > 00000050  6f 6f 74 77 61 69 74 20  69 70 3d 6f 66 66 20 69  |ootwait ip=off
> > i|
> > 00000060  6e 69 74 72 64 3d 30 78  63 30 38 30 30 30 30 30
> > |nitrd=0xc0800000|
> > 00000070  2c 37 38 36 31 37 32 39  00 00 00 00 00 00 00 00
> > |,7861729........|
> > 00000080  00 00 00 00                                       |....|
> > 00000084
> >
> >
> > Therefore, I am forced to specify the initramfs location via a initrd=
> > kernel parameter. However, I am getting this "junk in compressed archive"
> > and the initramfs gets ignored. I am not sure why the initramfs becomes
> > invalid. The bootloader loads the uImage at 0xc1000000 and extracts the
> > contents at 0xc2000000, 16 MiB higher, and way past the places where the
> > kernel is extracted. Specifying the exact byte size instead of 8M makes no
> > difference. I tried to use the keepinitrd boot parameter, but once I get to
> > a prompt, I do not find a place where I can inspect the initramfs as seen by
> > the kernel. I ran "gzip -t" on the original initramfs, and it checks out
> > fine. Could you give me suggestions on how to debug this?
> >
> > U-Boot > setenv bootargs root=/dev/mmcblk0p2 rw rootwait ip=off
> > initrd=0xc2000000,8M; mmc rescan 0; fatload mmc 0 0xc0700000 uImage; fatload
> > mmc 0 0xc1000000 initramfs-mcuzone.img; bootm c0700000 c1000000;
> > reading uImage
> >
> > 3448120 bytes read
> > reading initramfs-mcuzone.img
> >
> > 7861793 bytes read
> > ## Booting kernel from Legacy Image at c0700000 ...
> >     Image Name:   mcuzone-3.5.6-1.fc17
> >     Image Type:   ARM Linux Kernel Image (uncompressed)
> >     Data Size:    3448056 Bytes = 3.3 MiB
> >     Load Address: c0008000
> >     Entry Point:  c0008000
> >     Verifying Checksum ... OK
> > ## Loading init Ramdisk from Legacy Image at c1000000 ...
> >     Image Name:   mcuzone-initramfs-3.5.6-1.fc17
> >     Image Type:   ARM Linux RAMDisk Image (uncompressed)
> >     Data Size:    7861729 Bytes = 7.5 MiB
> >     Load Address: c2000000
> >     Entry Point:  c2000000
> >     Verifying Checksum ... OK
> >     Loading Kernel Image ... OK
> > OK
> >
> > Starting kernel ...
> >
> > Uncompressing Linux... done, booting the kernel.
> > [    0.000000] Booting Linux on physical CPU 0
> > [    0.000000] Initializing cgroup subsys cpuset
> > [    0.000000] Initializing cgroup subsys cpu
> > [    0.000000] Linux version 3.5.6-1.elastixarm.fc17.armv5tel.mcuzone
> > (palosanto(a)rpmbuild-arm.elastix.palosanto.com) (gcc version 4.7.2 20120921
> > (Red Hat 4.7.2-2) (GCC) ) #1 Fri Mar 29 07:20:14 ECT 2013
> > [    0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
> > [    0.000000] CPU: VIVT data cache, VIVT instruction cache
> > [    0.000000] Machine: DaVinci DA850/OMAP-L138/AM18x EVM
> > [    0.000000] Memory policy: ECC disabled, Data cache writeback
> > [    0.000000] BUG: mapping for 0xffff0000 at 0xfffe0000 out of vmalloc
> > space
> > [    0.000000] DaVinci da850/omap-l138/am18x variant 0x1
> > [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total
> > pages: 65024
> > [    0.000000] Kernel command line: root=/dev/mmcblk0p2 rw rootwait ip=off
> > initrd=0xc2000000,8M
> > [    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
> > [    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072
> > bytes)
> > [    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
> > [    0.000000] allocated 524288 bytes of page_cgroup
> > [    0.000000] please try 'cgroup_disable=memory' option if you don't
> want
> > memory cgroups
> > [    0.000000] Memory: 256MB = 256MB total
> > [    0.000000] Memory: 243340k/243340k available, 18804k reserved, 0K
> > highmem
> > [    0.000000] Virtual kernel memory layout:
> > [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> > [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> > [    0.000000]     vmalloc : 0xd0800000 - 0xff000000   ( 744 MB)
> > [    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
> > [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
> > [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
> > [    0.000000]       .text : 0xc0008000 - 0xc0622f68   (6252 kB)
> > [    0.000000]       .init : 0xc0623000 - 0xc066adbc   ( 288 kB)
> > [    0.000000]       .data : 0xc066c000 - 0xc06c6a90   ( 363 kB)
> > [    0.000000]        .bss : 0xc06c6ab4 - 0xc079e6bc   ( 864 kB)
> > [    0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0,
> > CPUs=1, Nodes=1
> > [    0.000000] NR_IRQS:245
> > [    0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every
> > 178956ms
> > [    0.000000] Console: colour dummy device 80x30
> > [    0.000320] Calibrating delay loop... 227.32 BogoMIPS (lpj=1136640)
> > [    0.080067] pid_max: default: 32768 minimum: 301
> > [    0.080536] Security Framework initialized
> > [    0.080666] SELinux:  Initializing.
> > [    0.081482] Mount-cache hash table entries: 512
> > [    0.083324] Initializing cgroup subsys cpuacct
> > [    0.083374] Initializing cgroup subsys memory
> > [    0.083479] Initializing cgroup subsys devices
> > [    0.083511] Initializing cgroup subsys freezer
> > [    0.083534] Initializing cgroup subsys net_cls
> > [    0.083553] Initializing cgroup subsys blkio
> > [    0.083569] Initializing cgroup subsys perf_event
> > [    0.083937] CPU: Testing write buffer coherency: ok
> > [    0.084169] ftrace: allocating 18656 entries in 37 pages
> > [    0.156178] Setting up static identity map for 0xc0469cc0 - 0xc0469d18
> > [    0.164684] devtmpfs: initialized
> > [    0.168005] DaVinci: 144 gpio irqs
> > [    0.169473] atomic64 test passed
> > [    0.170251] NET: Registered protocol family 16
> > [    0.206674] da850_evm_usb_init: before cfgchip2=0x0001ef00
> > [    0.206709] da850_evm_usb_init: after cfgchip2=0x0001af02
> > [    0.223659] bio: create slab <bio-0> at 0
> > [    0.226056] SCSI subsystem initialized
> > [    0.227728] usbcore: registered new interface driver usbfs
> > [    0.227984] usbcore: registered new interface driver hub
> > [    0.228572] usbcore: registered new device driver usb
> > [    0.233488] NetLabel: Initializing
> > [    0.233532] NetLabel:  domain hash size = 128
> > [    0.233550] NetLabel:  protocols = UNLABELED CIPSOv4
> > [    0.233703] NetLabel:  unlabeled traffic allowed by default
> > [    0.234102] Switching to clocksource timer0_1
> > [    0.315460] NET: Registered protocol family 2
> > [    0.316158] IP route cache hash table entries: 2048 (order: 1, 8192
> > bytes)
> > [    0.317484] TCP established hash table entries: 8192 (order: 4, 65536
> > bytes)
> > [    0.317834] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
> > [    0.318060] TCP: Hash tables configured (established 8192 bind 8192)
> > [    0.318080] TCP: reno registered
> > [    0.318117] UDP hash table entries: 256 (order: 0, 4096 bytes)
> > [    0.318168] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
> > [    0.318977] NET: Registered protocol family 1
> > [    0.319845] Unpacking initramfs...
> > [    0.319937] Initramfs unpacking failed: junk in compressed archive
> > [    0.354933] Freeing initrd memory: 8192K
> > [    0.356001] EMAC: RMII PHY configured, MII PHY will not be functional
> > [    0.358747] audit: initializing netlink socket (disabled)
> > [    0.358942] type=2000 audit(0.330:1): initialized
> >
> > _______________________________________________
> > arm mailing list
> > arm(a)lists.fedoraproject.org
> > https://admin.fedoraproject.org/mailman/listinfo/arm
>
>  
U-Boot > bdinfo
arch_number = 0x0000086D
boot_params = 0xC0000100
DRAM bank   = 0x00000000
-> start    = 0xC0000000
-> size     = 0x10000000
ethaddr     = 08:00:3e:26:0a:13
ip_addr     = 0.0.0.0
baudrate    = 115200 bps
TLB addr    = 0xCFFF0000
relocaddr   = 0xCFF63000
reloc off   = 0x0EEE3000
irq_sp      = 0xCFE32F70
sp start    = 0xCFE32F68
FB base     = 0x00000000
U-Boot >

So it seems that the board has no memory at 0x00000000, only at 0xc0000000 through
0xd00000000. I already noted this in the previous email. Lets try this anyway:

mkimage -A arm -T ramdisk -C none -a 0x00000000 -e 0x00000000 -n
"mcuzone-initramfs-3.5.6-1.fc17" -d
/run/media/alex/rootfs/boot/initramfs-3.5.6-1.elastixarm.fc17.armv5tel.mcuzone.img
/run/media/alex/BOOT/initramfs-mcuzone.img

The bootloader accepts the load of the initramfs uImage at 0xc1000000 through the fatload
command, but on attempting to boot the kernel with "initrd=0x00000000,8M", it
shows the message:

[    0.000000] INITRD: 0x00000000+0x00800000 is not a memory region - disabling initrd

So the kernel will not accept specifying this as the initrd address.

If I specify the uImage load address instead, I get the "junk in compressed
archive" message, as before:

AM1808 initialization passed!
Booting TI User Boot Loader
     UBL Version: 1.65
     UBL Flashtype: SPI
Starting SPI Memory Copy...
Valid magicnum, 0x55424CBB, found at offset 0x00010000.
    DONE
Jumping to entry point at 0xC1080000.
[xiameihua] 2012-12-31 PM 16:12
NAND:  No NAND device found!!!
0 MiB
MMC:   davinci: 0
*** Warning - readenv() failed, using default environment

In:    serial
Out:   serial
Err:   serial
ARM Clock : 456000000 Hz
DDR Clock : 150000000 Hz
SF: Unsupported manufacturer ef
  Error - unable to probe SPI flash.
[xiameihua] mac addr : 00 00 00 00 0c 00Net:   phy_act_state = 1
Ethernet PHY: GENERIC(1cc816) @ 0x00
DaVinci-EMAC
Hit any key to stop autoboot:  0
U-Boot > setenv bootargs root=/dev/mmcblk0p2 rw rootwait ip=off initrd=0xc2000000,8M
U-Boot > mmc rescan 0
U-Boot > fatload mmc 0 0xc2000000 initramfs-mcuzone.img
reading initramfs-mcuzone.img

7861793 bytes read
U-Boot > fatload mmc 0 0xc0700000 uImage
reading uImage

3448120 bytes read
U-Boot > bootm c0700000 c2000000
## Booting kernel from Legacy Image at c0700000 ...
    Image Name:   mcuzone-3.5.6-1.fc17
    Image Type:   ARM Linux Kernel Image (uncompressed)
    Data Size:    3448056 Bytes = 3.3 MiB
    Load Address: c0008000
    Entry Point:  c0008000
    Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at c2000000 ...
    Image Name:   mcuzone-initramfs-3.5.6-1.fc17
    Image Type:   ARM Linux RAMDisk Image (uncompressed)
    Data Size:    7861729 Bytes = 7.5 MiB
    Load Address: 00000000
    Entry Point:  00000000
    Verifying Checksum ... OK
    Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.000000] Booting Linux on physical CPU 0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.5.6-1.elastixarm.fc17.armv5tel.mcuzone
(palosanto(a)rpmbuild-arm.elastix.palosanto.com) (gcc version 4.7.2 20120921 (Red Hat
4.7.2-2) (GCC) ) #1 Fri Mar 29 07:20:14 ECT 2013
[    0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
[    0.000000] CPU: VIVT data cache, VIVT instruction cache
[    0.000000] Machine: DaVinci DA850/OMAP-L138/AM18x EVM
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] BUG: mapping for 0xffff0000 at 0xfffe0000 out of vmalloc space
[    0.000000] DaVinci da850/omap-l138/am18x variant 0x1
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024
[    0.000000] Kernel command line: root=/dev/mmcblk0p2 rw rootwait ip=off
initrd=0xc2000000,8M
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] allocated 524288 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want
memory cgroups
[    0.000000] Memory: 256MB = 256MB total
[    0.000000] Memory: 243340k/243340k available, 18804k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xd0800000 - 0xff000000   ( 744 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc0622f68   (6252 kB)
[    0.000000]       .init : 0xc0623000 - 0xc066adbc   ( 288 kB)
[    0.000000]       .data : 0xc066c000 - 0xc06c6a90   ( 363 kB)
[    0.000000]        .bss : 0xc06c6ab4 - 0xc079e6bc   ( 864 kB)
[    0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:245
[    0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[    0.000000] Console: colour dummy device 80x30
[    0.000321] Calibrating delay loop... 227.32 BogoMIPS (lpj=1136640)
[    0.080067] pid_max: default: 32768 minimum: 301
[    0.080536] Security Framework initialized
[    0.080665] SELinux:  Initializing.
[    0.081482] Mount-cache hash table entries: 512
[    0.083324] Initializing cgroup subsys cpuacct
[    0.083374] Initializing cgroup subsys memory
[    0.083479] Initializing cgroup subsys devices
[    0.083512] Initializing cgroup subsys freezer
[    0.083535] Initializing cgroup subsys net_cls
[    0.083553] Initializing cgroup subsys blkio
[    0.083570] Initializing cgroup subsys perf_event
[    0.083938] CPU: Testing write buffer coherency: ok
[    0.084170] ftrace: allocating 18656 entries in 37 pages
[    0.156155] Setting up static identity map for 0xc0469cc0 - 0xc0469d18
[    0.164648] devtmpfs: initialized
[    0.167942] DaVinci: 144 gpio irqs
[    0.169401] atomic64 test passed
[    0.170174] NET: Registered protocol family 16
[    0.206625] da850_evm_usb_init: before cfgchip2=0x0001ef00
[    0.206661] da850_evm_usb_init: after cfgchip2=0x0001af02
[    0.223601] bio: create slab <bio-0> at 0
[    0.225974] SCSI subsystem initialized
[    0.227663] usbcore: registered new interface driver usbfs
[    0.227927] usbcore: registered new interface driver hub
[    0.228518] usbcore: registered new device driver usb
[    0.233448] NetLabel: Initializing
[    0.233490] NetLabel:  domain hash size = 128
[    0.233507] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.233660] NetLabel:  unlabeled traffic allowed by default
[    0.234065] Switching to clocksource timer0_1
[    0.315302] NET: Registered protocol family 2
[    0.315990] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.317319] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    0.317670] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[    0.317897] TCP: Hash tables configured (established 8192 bind 8192)
[    0.317917] TCP: reno registered
[    0.317953] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.318005] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.318815] NET: Registered protocol family 1
[    0.319689] Unpacking initramfs...
[    0.319779] Initramfs unpacking failed: junk in compressed archive
[    0.354765] Freeing initrd memory: 8192K