Kernel panic on boot with CFI flash device on physical memory, MTD, and JFFS2 enabled
- From: smayadewi@xxxxxxxxx
- Date: 17 May 2007 10:29:12 -0700
Hi all,
I have been trying to make the MTD partition working on Montavista
Linux 2.4.20 because I need to mount JFFS2 (writeable and persistent)
file system on ramdisk based file system. I have enabled the CFI flash
device on physical memory on the kernel configuration. Since there is
no option to specify the start address of flash memory, the length and
the bus width on the configuration, I added them manually to physmap.c
and config_probe.c. Is it okay to do this? Otherwise, Linux will try
to map to address 0 with size 0, which is not right either.
However, during Linux boot, when it reaches map_copy_from(map, buf,
adr, len) in cfi_cmdset_0002.c, it gets Kernel Panic. My flash base
address is 0xe8000000 to 0xebffffff. But I want to mount the JFFS2
file system starting at address 0xeba00000. The error message is
attached below. What did I do wrong? Any help will be greatly
appreciated. Thank you.
Shirley
..
..
..
$Id: ftl.c,v 1.50 2003/05/21 10:49:47 dwmw2 Exp $
cfi_amdstd_init
map_rom_init
physmap flash device: ffff at eba00000
genprobe_new_chip
CFIDEV_BUSWIDTH_4
CFIDEV_INTERLEAVE_1
cfi_probe_chip ************ //my own comment
About to probe //my own comment
About to cfi_send_gen_cmd //my own comment
cfi->device_type = 4
NO QRY response
CFIDEV_INTERLEAVE_2
CFI_DEVICETYPE_X16
cfi_probe_chip ************ //my own comment
About to probe //my own comment
About to cfi_send_gen_cmd //my own comment
cfi->device_type = 2
mtd_info cfi_cmdset_0002
Amd/Fujitsu Extended Query Table v1.3 at 0x0040
mtd info, about to allocate kernel memory for mtd
number of CFI chips: 1
cfi_cmdset_0002: Disabling fast programming due to code brokenness.
cfi_amdstd_read //my own comment
do_read_onechip //my own comment
after spin_lock //my own comment
adr = 0x00001030 //my own comment
buf = 0xC02D8000 //my own comment
len = 0x00001000 //my own comment
Oops: kernel access of bad area, sig: 11
NIP: C001192C XER: 00000000 LR: C00EBC38 SP: C029DE60 REGS: c029ddb0
TRAP: 0800
Not tainted
MSR: 00009030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DEAR: C9061000, ESR: 00000000
TASK = c029c000[1] 'swapper' Last syscall: 120
last math 00000000 last altivec 00000000
GPR00: 00000000 C029DE60 C029C000 C02D8000 C9060FFC 00001000 C02D7FFC
00000200
GPR08: 00000000 C01A0000 00000034 C029DD80 C01A0000 00005128 04004F00
00000000
GPR16: 00000001 00000001 FFFFFFFF 007FFF00 00001000 C02D8000 C00EBC14
C01A0000
GPR24: C0170000 C01A0000 00000000 03FE0000 C02DBADC C02DBAF4 C01A7040
00000000
Call backtrace:
C02DBAF4 C00E68D8 C00E4D3C C00DB70C C00DB5CC C019B0A4 C0191634
C0002458 C0006F9C
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
<0>Rebooting in 180 seconds..
.
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