Hi Greg,
>-----Original Message-----
>From: Greg Ungerer [mailto:gregunge...@westnet.com.au]
>Sent: Wednesday, January 23, 2013 1:17 PM
>To: uClinux development list
>Cc: Christian Gieseler
>Subject: Re: [uClinux-dev] ROMFS: bad initial checksum
>
>Hi Christian,
>
>On 01/23/2013 06:45 PM, Christian Gieseler wrote:
>> I am migrating our coldfire 5329 board to linux 3.6.
>> I am stuck now with mounting of romfs having a bad initial checksum of
>> the first 512 bytes. The system hangs after this message.
>> Even if the functions in fs/romfs/inode.c have moved a bit from 2.6.25
>> to super.c and friends from what I can see the routines to calculate
>> the checksum are basically the same. Genromfs (0.5.1) on the host has
>> not changed. Has the new Kernel any configuration option that has to
>> be changed to generate a proper romfs.img?
>
>No, nothing has changed in this area. I have run 3.6 kernels on ColdFire
boards using romfs setups the same as every kernel before.
>
Are there critical configuration options that I should check another time?
>
>> Or is the checksum
>> tested on a wrong value because I misconfigured an address.
>> Does someone have a hint how to solve this or where to look for a
solution?
>> The bootmessages are attached for reference.
>
>Can you send the entire boot sequence?
>I want to see all the load segment addresses that are earlier in the boot
output.
Linux version 3.6.0-uc0 (christian@cglinux) (gcc version 4.6.1 (Sourcery
CodeBench Lite 2011.09-23) ) #154 PREEMPT Wed Jan 23 14:04:49 CET 2013
uClinux/COLDFIRE(m532x)
COLDFIRE port done by Greg Ungerer, g...@snapgear.com
Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne
Built 1 zonelists in Zone order, mobility grouping off. Total pages: 2024
Kernel command line: rootfstype=romfs console=tty1 console=ttyS0,115200
PID hash table entries: 2048 (order: 0, 8192 bytes)
Dentry cache hash table entries: 2048 (order: 0, 8192 bytes)
Inode-cache hash table entries: 2048 (order: 0, 8192 bytes)
Memory available: 11992k/16256k RAM, (1831k kernel code, 508k data)
NR_IRQS:256
Calibrating delay loop... 154.62 BogoMIPS (lpj=77312)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
Switching to clocksource tmr
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 8192 bytes)
TCP bind hash table entries: 2048 (order: 0, 8192 bytes)
TCP: Hash tables configured (established 1024 bind 2048)
TCP: reno registered
UDP hash table entries: 512 (order: 0, 8192 bytes)
UDP-Lite hash table entries: 512 (order: 0, 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.
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 23
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
ColdFire internal UART serial driver
ttyS0 at MMIO 0xfc060000 (irq = 90) is a ColdFire UART
console [ttyS0] enabled
ttyS1 at MMIO 0xfc064000 (irq = 91) is a ColdFire UART
ttyS2 at MMIO 0xfc068000 (irq = 92) is a ColdFire UART
uclinux[mtd]: RAM probe address=0x4026924c size=0x19c000
uclinux[mtd]: set ROMfs to be root filesystem
Creating 1 MTD partitions on "RAM":
0x000000000000-0x00000019c000 : "ROMfs"
el5329 flash device: 1000000 at 0
el5329 flash: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer
ID
0x000001 Chip ID 0x002101
Amd/Fujitsu Extended Query Table at 0x0040
Amd/Fujitsu Extended Query version 1.3.
number of CFI chips: 1
Creating 5 MTD partitions on " el5329 flash":
0x000000000000-0x000000020000 : "vectors"
0x000000020000-0x000000060000 : "parameters"
0x000000060000-0x000000100000 : "bootloader"
0x000000100000-0x000000700000 : "image"
0x000000700000-0x000001000000 : "user_data"
libphy: fec_enet_mii_bus: probed
TCP: cubic registered
NET: Registered protocol family 17
ROMFS: bad initial checksum on dev romfs.
>How do you load the kernel and romfs into RAM?
I use dbug as bootloader and copy image.bin via tftp and then execute from
ram:
Power-on Reset
ColdFire MCF532x
Firmware v4a.1a.1b.0100_1616 (Built on Nov 5 2009 15:47:58)
Copyright 2005 Freescale Semiconductor, Inc.
Enter 'help' for help.
dBUG> dn
Downloading Image 'image.bin' from 192.168.10.254
TFTP transfer completed
Read 3228676 bytes (6307 blocks)
dBUG> go 0x40020000
>Are you positive that the romfs is entirely loaded at the address you think
it should be?
Yes I think the romfs is entirely loaded, but I am not sure about the
address. I thought this is calculated in the vendor Makefile
Is that right?
genromfs -v -V "ROMdisk" -f $(ROMFSIMG) -d $(ROMFSDIR)
$(CROSS)objcopy -O binary $(ROOTDIR)/$(LINUXDIR)/linux \
$(IMAGEDIR)/linux.bin
cat $(IMAGEDIR)/linux.bin $(ROMFSIMG) > $(IMAGE)
$(ROOTDIR)/tools/cksum -b -o 2 $(IMAGE) >> $(IMAGE)
[ -n "$(NO_BUILD_INTO_TFTPBOOT)" ] || cp $(IMAGE) /var/lib/tftpboot
[ -n "$(NO_BUILD_INTO_TFTPBOOT)" ] || cp $(ROMFSIMG)
/var/lib/tftpboot
BSS=`$(CROSS)objdump --headers $(ROOTDIR)/$(LINUXDIR)/linux | \
grep .bss` ; \
ADDR=`set -- $${BSS} ; echo 0x$${4}` ; \
$(CROSS)objcopy --add-section=.romfs=$(ROMFSIMG) \
--adjust-section-vma=.romfs=$${ADDR} --no-adjust-warnings \
--set-section-flags=.romfs=alloc,load,data \
$(ROOTDIR)/$(LINUXDIR)/linux $(ELFIMAGE) 2> /dev/null
>
>Regards
>Greg
Thanks for your help.
Regards
Christian
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