Req help - Panic in VFS mount(Cramfs)

[KARTHIK SEKURU]

Hi,



I'm doing kernel porting to arm926 based FPGA board, with very minimal
setup.

Only UART and timer devices are available as part of FPGA.



Board details –



Using ARM926e-js processor with 128MB SDRAM., Clock-33Mhz

SDRAM Size = 128M



CONFIG_PAGE_OFFSET = 0xc0000000

CONFIG_PHYS_OFFSET= 0x80000000



Loading the cramfs  at 0x82000000

Start address for kernel is 0x80008000

Commandline(atags address)   is 0x80000100



Kernel Lowmem = 32M

HighMEM is not configured.



Vmalloc_start =      0xC40000000

VMALLOC_END =  Vmalloc_start + 64M  = 0xC8000000



After mounting the CRAMFS filesystem, we are expecting a login prompt. But
we are getting kernel panic message as shown below.

Please help me in fix the issue.

Kindly let me know if further information is needed.



*Console message:*

VFS: Mounted root (cramfs filesystem) readonly on device 1:0.

Freeing init memory: 76K

Error -3 while decompressing!

c018b094(3087)->c016f000(4096)

Error -5 while decompressing!

c018bca3(3740)->c0170000(4096)

Error -5 while decompressing!

c018cb3f(3116)->c0171000(4096)

Error -5 while decompressing!

c018e76b(5370)->c0172000(4096)

Error -3 while decompressing!

c018b094(3087)->c016f000(4096)

Failed to execute /linuxrc.  Attempting defaults...

Error -3 while decompressing!

c018e8d8(3946)->c0173000(4096)

Error -5 while decompressing!

c018f842(4930)->c0174000(4096)

Error -5 while decompressing!

c0190b84(4854)->c0175000(4096)

Error -3 while decompressing!

c018e8d8(3946)->c0173000(4096)

Error -3 while decompressing!

c018b094(3087)->c016f000(4096)

*Panic meaasge:*

Kernel panic - not syncing: No init found.  Try passing init= option to
kernel. See Linux Documentation/init.txt for guidance.

Backtrace:

[<c000c378>] (dump_backtrace+0x0/0x10c) from [<c000c49c>]
(dump_stack+0x18/0x1c)

 r6:c001afb4 r5:c0183760 r4:c0183780 r3:60000013

[<c000c484>] (dump_stack+0x0/0x1c) from [<c00179d4>] (panic+0x64/0x1b0)

[<c0017970>] (panic+0x0/0x1b0) from [<c0008804>] (init_post+0xb0/0xd4)

 r3:c3824000 r2:c383a100 r1:c0204740 r0:c014595c

 r7:00000013

[<c0008754>] (init_post+0x0/0xd4) from [<c0163918>] (kernel_init+0xfc/0x12c)

[<c016381c>] (kernel_init+0x0/0x12c) from [<c001afb4>] (do_exit+0x0/0x694)




Karthik.
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