Jump to content
  • 0

Zybo tutorial - RAMDISK not found



I get the following error in the boot log when I boot the board as in step (4) of secton (5.2)

RAMDISK: Couldn't find valid RAM disk image starting at 0.

The complete boot log follows :

U-Boot 2014.01-00005-gc29bed9 (May 21 2015 - 10:27:14)

I2C:   ready
Memory: ECC disabled
DRAM:  512 MiB
MMC:   zynq_sdhci: 0
SF: Detected S25FL128S_64K with page size 256 Bytes, erase size 64 KiB, total 16 MiB
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   Gem.e000b000
Hit any key to stop autoboot:  3  2  1  0 
Device: zynq_sdhci
Manufacturer ID: 27
OEM: 5048
Name: SD04G 
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 3.7 GiB
Bus Width: 4-bit
reading uEnv.txt
** Unable to read file uEnv.txt **
Copying Linux from SD to RAM...
reading uImage
3459312 bytes read in 308 ms (10.7 MiB/s)
reading devicetree.dtb
7430 bytes read in 17 ms (426.8 KiB/s)
reading uramdisk.image.gz
3694388 bytes read in 328 ms (10.7 MiB/s)
## Booting kernel from Legacy Image at 03000000 ...
   Image Name:   Linux-3.18.0-xilinx-46110-gd627f
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3459248 Bytes = 3.3 MiB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 02000000 ...
   Image Name:   
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    3694324 Bytes = 3.5 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 02a00000
   Booting using the fdt blob at 0x2a00000
   Loading Kernel Image ... OK
   Loading Ramdisk to 1f7a9000, end 1fb2eef4 ... OK
   Loading Device Tree to 1f7a4000, end 1f7a8d05 ... OK

Starting kernel ...

Booting Linux on physical CPU 0x0
Linux version 3.18.0-xilinx-46110-gd627f5d (srini@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #1 SMP PREEMPT Thu May 21 11:29:27 PDT 2015
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: Xilinx Zynq
cma: Reserved 16 MiB at 0x1e400000
Memory policy: Data cache writealloc
PERCPU: Embedded 10 pages/cpu @5fbd3000 s8768 r8192 d24000 u40960
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048
Kernel command line: console=ttyPS0,115200 root=/dev/ram rw initrd=0x800000,8M init=/init earlyprintk rootwait devtmpfs.mount=1
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 484408K/524288K available (4681K kernel code, 258K rwdata, 1616K rodata, 212K init, 219K bss, 39880K reserved, 0K highmem)
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
    vmalloc : 0x60800000 - 0xff000000   (2536 MB)
    lowmem  : 0x40000000 - 0x60000000   ( 512 MB)
    pkmap   : 0x3fe00000 - 0x40000000   (   2 MB)
    modules : 0x3f000000 - 0x3fe00000   (  14 MB)
      .text : 0x40008000 - 0x4062e9b8   (6299 kB)
      .init : 0x4062f000 - 0x40664000   ( 212 kB)
      .data : 0x40664000 - 0x406a4ba0   ( 259 kB)
       .bss : 0x406a4ba0 - 0x406dbab8   ( 220 kB)
Preemptible hierarchical RCU implementation.
    Dump stacks of tasks blocking RCU-preempt GP.
    RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS:16 nr_irqs:16 16
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76360001
ps7-slcr mapped to 60804000
zynq_clock_init: clkc starts at 60804100
Zynq clock init
sched_clock: 64 bits at 325MHz, resolution 3ns, wraps every 3383112499200ns
ps7-ttc #0 at 60806000, irq=43
Console: colour dummy device 80x30
Calibrating delay loop... 1292.69 BogoMIPS (lpj=6463488)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x46c218 - 0x46c270
CPU1: Booted secondary processor
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated.
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
regulator-dummy: no parameters
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
cpuidle: using governor ladder
cpuidle: using governor menu
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
zynq-ocm f800c000.ps7-ocmc: ZYNQ OCM pool: 256 KiB @ 0x60880000
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
media: Linux media interface: v0.10
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
EDAC MC: Ver: 3.0.0
Advanced Linux Sound Architecture Driver Initialized.
Switched to clocksource arm_global_timer
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (junk in compressed archive); looks like an initrd
Freeing initrd memory: 8192K (40800000 - 41000000)
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
futex hash table entries: 512 (order: 3, 32768 bytes)
jffs2: version 2.2. (NAND) (SUMMARY)  Â© 2001-2006 Red Hat, Inc.
msgmni has been set to 994
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
dma-pl330 f8003000.ps7-dma: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.ps7-dma:     DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
xuartps e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 82, base_baud = 3125000) is a xuartps
console [ttyPS0] enabled
xdevcfg f8007000.ps7-dev-cfg: ioremap 0xf8007000 to 6086c000
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
CAN device driver interface
e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
e1000e: Copyright(c) 1999 - 2014 Intel Corporation.
libphy: XEMACPS mii bus: probed
xemacps e000b000.ps7-ethernet: pdev->id -1, baseaddr 0xe000b000, irq 54
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ULPI transceiver vendor/product ID 0x0424/0x0007
Found SMSC USB3320 ULPI transceiver.
ULPI integrity check: passed.
zynq-ehci zynq-ehci.0: Xilinx Zynq USB EHCI Host Controller
zynq-ehci zynq-ehci.0: new USB bus registered, assigned bus number 1
zynq-ehci zynq-ehci.0: irq 53, io mem 0x00000000
zynq-ehci zynq-ehci.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
usbcore: registered new interface driver usb-storage
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
Xilinx Zynq CpuIdle Driver started
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
sdhci-arasan e0100000.ps7-sdio: No vmmc regulator found
sdhci-arasan e0100000.ps7-sdio: No vqmmc regulator found
mmc0: SDHCI controller on e0100000.ps7-sdio [e0100000.ps7-sdio] using ADMA
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
zynq_pm_ioremap: no compatible node found for 'xlnx,zynq-ddrc-a05'
zynq_pm_late_init: Unable to map DDRC IO memory.
Registering SWP/SWPB emulation handler
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
ALSA device list:
  No soundcards found.
RAMDISK: Couldn't find valid RAM disk image starting at 0.
mmc0: new high speed SDHC card at address 0007
mmcblk0: mmc0:0007 SD04G 3.70 GiB 
List of all partitions:
 mmcblk0: p1
b300         3887104 mmcblk0  driver: mmcblk
  b301         1048576 mmcblk0p1 000df44c-01
No filesystem could mount root, tried:  ext3 ext2 ext4 vfat msdos
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
CPU0: stopping
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-xilinx-46110-gd627f5d #1
[<400148b8>] (unwind_backtrace) from [<40010da4>] (show_stack+0x10/0x14)
[<40010da4>] (show_stack) from [<40467a84>] (dump_stack+0x90/0xd4)
[<40467a84>] (dump_stack) from [<40013254>] (ipi_cpu_stop+0x3c/0x6c)
[<40013254>] (ipi_cpu_stop) from [<40013864>] (handle_IPI+0x64/0x84)
[<40013864>] (handle_IPI) from [<400085c8>] (gic_handle_irq+0x54/0x5c)
[<400085c8>] (gic_handle_irq) from [<40011740>] (__irq_svc+0x40/0x74)
Exception stack(0x40665f30 to 0x40665f78)
5f20:                                     410b39d4 00000000 00000018 fffffff8
5f40: 40f8c567 00000000 00000000 5fbd3f30 4069d308 4069d308 4066c4d4 00000000
5f60: 00000008 40665f78 4005e07c 403611a4 00000113 ffffffff
[<40011740>] (__irq_svc) from [<403611a4>] (cpuidle_enter_state+0x4c/0xc0)
[<403611a4>] (cpuidle_enter_state) from [<40048170>] (cpu_startup_entry+0x17c/0x204)
[<40048170>] (cpu_startup_entry) from [<4062fbc0>] (start_kernel+0x328/0x388)
[<4062fbc0>] (start_kernel) from [<00008074>] (0x8074)
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)



Link to comment
Share on other sites

2 answers to this question

Recommended Posts

On the same vein as lijieming's post, it looks like you're using a 4 GB SD card. I would recommend using an 8 GB Micro SD Card (the one we sell will not have any problems with the ZYBO, other SD cards might).


Another user came across the error below while booting:

Turns out my ZYBO_BOOT partition did not have a FAT32-32KB Cluster format. For some reason I could not do this with 1GB so I had to up it to 4GB. 


Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Create New...