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Date: Thu, 05 Feb 2009 10:40:48 -0800
From: Alex Vinogradovs <avinogradovs@clearpathnet.com>
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Subject: cfi causes vm_fault on IXP435
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Guys,

I've enabled cfi driver, specifying 0x50000000 as the address in hints 
(like for AVILA board),
and that causes vm_fault.

Here is what redboot reports about flash :

FLASH: 0x50000000 - 0x50800000, 128 blocks of 0x00010000 bytes each.

and here are the messages :

subsystem 3800000
   xdr_sizeof(0)... done.
   taskqueue_start_threads(0)... done.
   taskqueue_create(0)... done.
   taskqueue_create(0)... done.
   module_register_init(0xc04a20a8)... done.
   module_register_init(0xc04a5b50)... done.
   knlist_init(0)... done.
   taskqueue_create_fast(0)... done.
   xdr_sizeof(0)... ixp0: <Intel IXP4XX> on motherboard
ixp0: 37fff<RCOMP,USB,HASH,AES,DES,HDLC,AAL,HSS,UTOPIA,ETH0,ETH1,PCI>
ixpclk0: <IXP4XX Timer> on ixp0
ixpiic0: <IXP4XX GPIO-Based I2C Interface> on ixp0
iicbb0: <I2C bit-banging driver> on ixpiic0
iicbus0: <Philips I2C bus> on iicbb0 master-only
iic0: <I2C generic I/O> on iicbus0
iicbus0: <unknown card> at addr 0x5a
ad74180: <Analog Devices AD7418 ADC> at addr 0x50 on iicbus0
ds16720: <Dallas Semiconductor DS1672 RTC> at addr 0xd0 on iicbus0
ixpwdog0: <IXP4XX Watchdog Timer> on ixp0
uart0: <Non-standard ns8250 class UART with FIFOs> on ixp0
uart0: [FILTER]
uart0: console (115200,n,8,1)
ixpqmgr0: <IXP4XX Q-Manager> on ixp0
ixpqmgr0: [ITHREAD]
ixpqmgr0: [ITHREAD]
npe0: <IXP NPE-C> on ixp0
npe0: [ITHREAD]
npe0: MAC at 0xc800a000
npe0: MII at 0xc800a000
npe0: load fw image IXP425.NPE-C Func 0x5 Rev 2.1
miibus0: <MII bus> on npe0
ukphy0: <Generic IEEE 802.3u media interface> PHY 1 on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
npe0: Ethernet address: 00:03:47:df:32:a8

vm_fault(0xc0781000, fd000000, 2, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0xc00fbc40
FSR=000000f5, FAR=fd0000aa, spsr=600000d3
r0 =00000000, r1 =fd000000, r2 =000000aa, r3 =00000098
r4 =00000010, r5 =c1146600, r6 =c119b280, r7 =c1145580
r8 =00000001, r9 =c04aa9a4, r10=c119b2bc, r11=c00fbc98
r12=c04c0c0c, ssp=c00fbc8c, slr=c0221a9c, pc =c03fe5fc

[thread pid 0 tid 100000 ]
Stopped at      generic_armv4_bs_w_2:   strh    r3, [r1, r2]
db>