[ELDK] EBC error

[Zaahir Khan]

Hello All,


I am using customized board based on sequoia(ppc440epx).


FPGA is connected EBC @C0000000 on board.

at CS2


#define CFG_EBC_PB2AP         0x24814580
#define CFG_EBC_PB2CR          (CFG_FPGA_BASE | 0x9C000) //16MB & 32-bit Bus

In uboot when I tried

#md C0000000

getting some data and CS2 pulsating.

I written the driver for FPGA in kernel.

Did request_mem_region and ioremap.

When trying to access the remapped address getting traces(below).

Did I missed some thing?


In the same driver,

FLASH base address ioremap instead of FPGA,

FLASH Connected on EBC @FFA00000 8MB CS0

When accessed virtual address getting some thing but no crash and CS0
pulsating.


Please suggest !!

Thanks & regards,

Zaahir Khan


Trace:::


bash-3.2# ./VLOG_APP
[VLogic] open
Remap address e1900000
VLOGIC_DEV_READ
Machine check in kernel mode.
Instruction 0xa0000000
Data Read PLB Error
OPB to PLB3: BSTAT= 0x00000000
PLB3 to PLB4: BEAR=0xdff7ffffffffeefb BESR0=0x00000000 BESR1=0x00000000
PLB4 to PLB3: BEAR=0x44662a7a17fbfdd3 BESR0=0x00000000 BESR1=0x00000000
PLB3 to OPB: BEAR=0xd7fffeff BESR0=0x00000000 BESR1=0x00000000
PLB3 arbiter: BEAR=0x57e7efff ACR=0x90000000 BESR=0x00000000
PLB4 to OPB1: BEAR=0x0000000fffbfffef BESR0=0x00000000 BESR1=0x00000000
PLB40 Arbiter: BEAR=0x00000000c0000028 ACR=0xde000000 BESR0=0x0f000000
PLB41 Arbiter: BEAR=0xff7fefffd7f7fffe ACR=0xdf000000 BESR0=0x00000000
POB0: BEAR=0xc27e3194d7fffeff BESR0=0x00000000 BESR1=0x00000000
OPB0: BEAR=0x0000000000000000 BSTAT=0x00000000
Oops: machine check, sig: 7 [#1]
NIP: c001a034 LR: c016087c CTR: c0165be8
REGS: c034cf50 TRAP: 0202   Not tainted  (2.6.24.2)
MSR: 00029000 <EE,ME>  CR: 20000022  XER: 00000004
TASK = df869090[271] 'VLOG_APP' THREAD: df876000
GPR00: df877eb8 df877e70 df869090 c02cce28 df877e78 00000000 c0168790
0000000d
GPR08: 00000000 df877e88 0000157d c0165be8 249020e7 10048b00 100f0000
00000000
GPR16: 101103f8 1009e4f0 100f0000 100f7998 00000000 1010a3f0 101103e8
00000000
GPR24: 3000e870 00000001 7fc20e44 c0350000 c02cce14 c02cce28 0000000a
00000028
NIP [c001a034] printk+0x34/0x60
LR [c016087c] VLogic_Ioctl+0x74/0xdc
Call Trace:
[df877e70] [c001a050] printk+0x50/0x60 (unreliable)
[df877eb0] [c016087c] VLogic_Ioctl+0x74/0xdc
[df877ed0] [c0072794] do_ioctl+0x94/0x98
[df877ee0] [c0072a54] vfs_ioctl+0x2bc/0x420
[df877f10] [c0072bf8] sys_ioctl+0x40/0x74
[df877f40] [c0001a80] ret_from_syscall+0x0/0x3c
Instruction dump:
7c0802a6 91210030 90010044 39200000 38000001 9081001c 98010008 99210009
38010048 39210018 38810008 9001000c <90a10020> 90c10024 90e10028 9101002c