2008-09-26 13:00:16 JFFS2 on SPI NOR Flash kernel panic
Harvey Sugar (UNITED STATES)
Message: 62805
I am trying to bring up uClinux on a BF536 based board with SPI FLASH. I have had uClinux running out of RAM just fine.
For the partitioning I am using the partitions as defined in stamp.c for the BF537 stamp board. Here is the result I get when booting my kernel for SPI flash:
printenv bootargs
bootargs=root=/dev/mtdblock2 rw rootfstype=jffs2
bfin> eeprom read 1000000 120000 2
EEPROM @0x0 read: addr 01000000 off 120000 count 2 ... done
bfin> md.b 1000000 2
01000000: 85 19 ..
bfin> eeprom read 1000000 40000 e0000
EEPROM @0x0 read: addr 01000000 off 40000 count 917504 ... ..............done
bfin> bootm 1000000
## Booting image at 01000000 ...
Image Name: Linux-2.6.22.18-ADI-2008R1-svn
Created: 2008-09-26 15:39:40 UTC
Image Type: Blackfin Linux Kernel Image (gzip compressed)
Data Size: 847522 Bytes = 827.7 kB
Load Address: 00001000
Entry Point: 00166000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Starting Kernel at = 166000
Linux version 2.6.22.18-ADI-2008R1-svn (hsugar@sasha) (gcc version 4.1.2 (ADI svn)) #12 Fri Sep 26 11:39:37 EDT 2008
Hardware Trace Active and Enabled
Warning: limiting memory to 56MB due to hardware anomaly 05000263
Blackfin support (C) 2004-2007 Analog Devices, Inc.
Compiled for ADSP-BF536 Rev 0.2
Blackfin Linux support by http://blackfin.uclinux.org/
Processor Speed: 400 MHz core clock and 100 MHz System Clock
Board Memory: 64MB
Kernel Managed Memory: 64MB
Memory map:
text = 0x00001000-0x00104f50
rodata = 0x00105000-0x00154840
data = 0x00155000-0x00166000
stack = 0x00156000-0x00158000
init = 0x00166000-0x0017c000
bss = 0x0017c000-0x0018ae30
available = 0x0018ae30-0x037ff000
DMA Zone = 0x03f00000-0x04000000
Instruction Cache Enabled
Data Cache Enabled (write-through)
Built 1 zonelists. Total pages: 14224
Kernel command line: root=/dev/mtdblock2 rw rootfstype=jffs2
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory available: 55184k/65536k RAM, (88k init code, 1039k kernel code, 448k data, 1024k dma, 7756k reserved)
Blackfin Scratchpad data SRAM: 4 KB
Blackfin Data B SRAM: 16 KB (16 KB free)
Blackfin Instruction SRAM: 48 KB (39 KB free)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512
NET: Registered protocol family 16
Blackfin GPIO Controller
Blackfin DMA Controller
stamp_init(): registering device resources
Generic PHY: Registered new driver
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
JFFS2 version 2.2. (NAND) 
2001-2006 Red Hat, Inc.
JFFS2: default compression mode: priority
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler cfq registered
bfin-wdt: initialized: timeout=20 sec (nowayout=0)
Serial: Blackfin serial driver
bfin-uart.1: ttyBF0 at MMIO 0xffc02000 (irq = 20) is a BFIN-UART
SMSC LAN83C185: Registered new driver
bfin_mac_mdio: probed
bfin_mac: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=19)@sclk=100MHz)
bfin_mac: Version 1.1, Blackfin BF53[67] BF527 on-chip Ethernet MAC driver
m25p80 spi0.1: m25p64 (8192 Kbytes)
mtd .name = m25p80, .size = 0x00800000 (8M) .erasesize = 0x00010000 (64K) .numeraseregions = 0
m25p80 spi0.1: ignoring 3 default partitions on m25p80
mtd: Giving out device 0 to m25p80
bfin-spi bfin-spi.0: Blackfin BF5xx on-chip SPI Contoller Driver, Version 1.0, regs_base@ffc00500, dma channel@7
rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
rtc-bfin rtc-bfin: setting the system clock to 1970-01-09 00:03:57 (691437)
MTDSB: dev_name "/dev/root"
MTDSB: path_lookup() returned 0, inode 0028f5e0
List of all partitions:
1f00 8192 mtdblock0 (driver?)
No filesystem could mount root, tried: jffs2
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
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2008-09-26 13:30:10 Re: JFFS2 on SPI NOR Flash kernel panic
Mike Frysinger (UNITED STATES)
Message: 62807
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