[#4615] kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on.

Question

Accepted Answer

[#4615] kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on.

Submitted By: Mingquan Pan

Open Date

2008-11-06 05:22:24 Close Date

2009-01-16 09:38:04

Priority:

Medium Assignee:

Michael Hennerich

Status:

Closed Fixed In Release:

N/A

Found In Release:

N/A Release:

Category:

N/A Board:

N/A

Processor:

N/A Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Rejected

Uboot version or rev.:

Toolchain version or rev.:

Oct 10

App binary format:

N/A

Summary: kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on.

Details:

kernel boot up fails with CPUFreq items, on BF548 EZKIT, BF527-EZKIT, BF561-EZKIT.

On the BF548-EZKIT, it stops at:

bfin> boote

Loading .text @ 0x00001000 (1823920 bytes)

Loading .rodata @ 0x001be4c0 (501028 bytes)

Loading .init.rodata @ 0x002389e4 (156 bytes)

Loading __ksymtab @ 0x00238a80 (18704 bytes)

Loading __ksymtab_gpl @ 0x0023d390 (7736 bytes)

Loading __ksymtab_strings @ 0x0023f1c8 (61001 bytes)

Loading __init_rodata @ 0x0024e014 (172 bytes)

Loading __param @ 0x0024e0c0 (1660 bytes)

Clearing .bss @ 0x0024e740 (95324 bytes)

Loading .data @ 0x00265b9c (107620 bytes)

Loading .init.text @ 0x00280000 (143544 bytes)

Loading .init.data @ 0x002a30b8 (28912 bytes)

Loading .init.setup @ 0x002aa1a8 (608 bytes)

Loading .initcall.init @ 0x002aa408 (788 bytes)

Loading .con_initcall.init @ 0x002aa71c (8 bytes)

Loading .init.ramfs @ 0x002aa724 (3766930 bytes)

Loading .text_l1 @ 0xffa00000 (5852 bytes)

sh_addr: FFA00000, p_paddr: 006421B6

Loading from: 0262C000 to 006421B6, size: 5852

Loading .data_l1 @ 0xff800000 (224 bytes)

sh_addr: FF800000, p_paddr: 00643892

Loading from: 0262E000 to 00643892, size: 224

## Starting application at 0x00295550 ...

On BF527-ezkit , it shows panic:

bfin> run addip

bfin> bootelf

Loading .text @ 0x00001000 (1171440 bytes)

Loading .rodata @ 0x0011f000 (302884 bytes)

Loading .init.rodata @ 0x00168f24 (156 bytes)

Loading __ksymtab @ 0x00168fc0 (16184 bytes)

Loading __ksymtab_gpl @ 0x0016cef8 (5432 bytes)

Loading __ksymtab_strings @ 0x0016e430 (48430 bytes)

Loading __init_rodata @ 0x0017a160 (172 bytes)

Loading __param @ 0x0017a20c (560 bytes)

Clearing .bss @ 0x0017a440 (63952 bytes)

Loading .data @ 0x00189e10 (66032 bytes)

Loading .init.text @ 0x0019a000 (99396 bytes)

Loading .init.data @ 0x001b2444 (20516 bytes)

Loading .init.setup @ 0x001b7468 (632 bytes)

Loading .initcall.init @ 0x001b76e0 (512 bytes)

Loading .con_initcall.init @ 0x001b78e0 (4 bytes)

Loading .init.ramfs @ 0x001b78e4 (3167244 bytes)

Loading .text_l1 @ 0xffa00000 (5740 bytes)

sh_addr: FFA00000, p_paddr: 004BCCF0

Loading from: 024AE000 to 004BCCF0, size: 5740

Loading .data_l1 @ 0xff800000 (224 bytes)

sh_addr: FF800000, p_paddr: 004BE35C

Loading from: 024B0000 to 004BE35C, size: 224

## Starting application at 0x001a73d0 ...

Linux version 2.6.26.5-ADI-2009R1-pre-svn5497 (test@uclinux60-bf527-std) (gcc version 4.1.2 (ADI svn)) #5 Wed Oct 29 09:04:23 CST 2008

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x0011eff0

rodata = 0x0011f000-0x0017a43c

bss = 0x0017a440-0x00189e10

data = 0x00189e10-0x0019a000

stack = 0x00198000-0x0019a000

init = 0x0019a000-0x004bf000

available = 0x004bf000-0x03eff000

DMA Zone = 0x03f00000-0x04000000

Hardware Trace Active and Enabled

Reset caused by Software reset

Compiled for ADSP-BF527 Rev 0.0

ERROR: Not running on ADSP-BF527: unknown CPUID 0x27e0 Rev 0.0

Blackfin Linux support by blackfin.uclinux.org/

Processor Speed: 500 MHz core clock and 100 MHz System Clock

NOMPU: setting up cplb tables for global access

Instruction Cache Enabled

Data Cache Enabled (write-through)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 16001

Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600 ip=10.100.4.50:10.100.4.174:10.100.4.174:255.255.255.0:bf527-ezkit:eth0:off

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

console handover: boot [early_BFuart0] -> real [ttyBF0]

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 59068k/65536k RAM, (3220k init code, 1143k kernel code, 493k data, 1024k dma, 584k reserved)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (15 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (42 KB free)

net_namespace: 192 bytes

NET: Registered protocol family 16

Blackfin GPIO Controller

Blackfin DMA Controller

stamp_init(): registering device resources

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

musb_hdrc: version 6.0, pio, host, debug=0

musb_hdrc: USB Host mode controller at ffc03800 using PIO, IRQ 59

musb_hdrc musb_hdrc.0: MUSB HDRC host driver

musb_hdrc musb_hdrc.0: new USB bus registered, assigned bus number 1

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

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

NET: Registered protocol family 1

Kernel panic - not syncikernel panic detected... trying to recover from it

On BF561-EZKIT, it is also panic.

config file for bf548 is attached.

Follow-ups

--- Michael Hennerich 2008-11-06 06:56:03

I think this is not related to CPUfreq.

Can you turn off CONFIG_BFIN_KERNEL_CLOCK and try again?

Kernel without CPUfreq and only with CONFIG_BFIN_KERNEL_CLOCK fails to boot.

-Michael

--- Mingquan Pan 2008-11-07 00:43:38

Yes, you are right. It is because the CONFIG_BFIN_KERNEL_CLOCK item is selected

that cause this problem.

On bf548 ezkit, the log is the same.

And on bf527 ezkit, more info can see like the following:

CPU: ADSP bf527-0.0 (Detected Rev: 0.0)

Board: ADI BF527 EZ-Kit board

Support: blackfin.uclinux.org/

Clock: VCO: 525 MHz, Core: 525 MHz, System: 131 MHz

RAM: 64 MB

Flash: 4 MB

In: serial

Out: serial

Err: serial

Net: Blackfin EMAC

MAC: 00:E0:22:FE:B8:11

Hit any key to stop autoboot: 0

bfin>

bfin> tftp 0x2000000 linux

Using Blackfin EMAC device

TFTP from server 10.100.4.174; our IP address is 10.100.4.50

Filename 'linux'.

Load address: 0x2000000

Loading: #################################################################

#################################################################

################

done

Bytes transferred = 8067695 (7b1a6f hex)

bfin> boote

Loading .text @ 0x00001000 (1197040 bytes)

Loading .rodata @ 0x00125400 (296296 bytes)

Loading .init.rodata @ 0x0016d968 (156 bytes)

Loading __ksymtab @ 0x0016da04 (16680 bytes)

Loading __ksymtab_gpl @ 0x00171b2c (5736 bytes)

Loading __ksymtab_strings @ 0x00173194 (50369 bytes)

Loading __init_rodata @ 0x0017f658 (172 bytes)

Loading __param @ 0x0017f704 (640 bytes)

Clearing .bss @ 0x0017f9a0 (66712 bytes)

Loading .data @ 0x0018fe38 (74184 bytes)

Loading .init.text @ 0x001a2000 (100864 bytes)

Loading .init.data @ 0x001baa00 (20648 bytes)

Loading .init.setup @ 0x001bfaa8 (584 bytes)

Loading .initcall.init @ 0x001bfcf0 (640 bytes)

Loading .con_initcall.init @ 0x001bff70 (4 bytes)

Loading .init.ramfs @ 0x001bff74 (5640817 bytes)

Loading .text_l1 @ 0xffa00000 (5756 bytes)

sh_addr: FFA00000, p_paddr: 007211E5

Loading from: 02712000 to 007211E5, size: 5756

Loading .data_l1 @ 0xff800000 (224 bytes)

sh_addr: FF800000, p_paddr: 00722861

Loading from: 02714000 to 00722861, size: 224

## Starting application at 0x001af3a8 ...

Linux version 2.6.28-rc2-ADI-2009R1-pre-svn5588 (test@uclinux60-bf527-std) (gcc

version 4.1.2 (ADI svn)) #32 Fri Nov 7 13:36:54 CST 2008

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x001253f0

rodata = 0x00125400-0x0017f984

bss = 0x0017f9a0-0x0018fe38

data = 0x0018fe38-0x001a2000

stack = 0x001a0000-0x001a2000

init = 0x001a2000-0x00723000

available = 0x00723000-0x03eff000

DMA Zone = 0x03f00000-0x04000000

Hardware Trace Active and Enabled

Reset caused by Software reset

Compiled for ADSP-BF527 Rev 0.0

ERROR: Not running on ADSP-BF527: unknown CPUID 0x27e0 Rev 0.0

Blackfin Linux support by blackfin.uclinux.org/

Processor Speed: 500 MHz core clock and 100 MHz System Clock

NOMPU: setting up cplb tables for global access

Instruction Cache Enabled

Data Cache Enabled (write-through)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 16001

Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

console handover: boot [early_BFuart0] -> real [ttyBF0]

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 56620k/65536k RAM, (5636k init code, 1168k kernel code, 500k

data, 1024k dma, 584k reserved)

Calibrating delay loop... 993.28 BogoMIPS (lpj=1986560)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (15 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (42 KB free)

net_namespace: 288 bytes

NET: Registered protocol family 16

Blackfin GPIO Controller

Blackfin DMA Controller

stamp_init(): registering device resources

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

musb_hdrc: version 6.0, pio, host, debug=0

musb_hdrc: USB Host mode controller at ffc03800 using PIO, IRQ 59

musb_hdrc musb_hdrc.0: MUSB HDRC host driver

musb_hdrc musb_hdrc.0: new USB bus registered, assigned bus number 1

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

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

NET: Registered protocol family 1

Kernel panic - not syncing: junk in compressed archive

kernel config for bf527 ezkit is attached.

--- Mingquan Pan 2008-11-07 01:09:41

It is strange that if select that CONFIG_BFIN_KERNEL_CLOCK item and set

CONFIG_VCO_MULT to 16, the kernel is still booting ok on bf527-ezkit. Only when

you turn CONFIG_BFIN_KERNEL_CLOCK on and remain CONFIG_VCO_MULT to 20, that

makes the bug shows up.

This time show more info on bf527-ezkit:

fin> boote

Loading .text @ 0x00001000 (1197120 bytes)

Loading .rodata @ 0x00125440 (296220 bytes)

Loading .init.rodata @ 0x0016d95c (156 bytes)

Loading __ksymtab @ 0x0016d9f8 (16680 bytes)

Loading __ksymtab_gpl @ 0x00171b20 (5736 bytes)

Loading __ksymtab_strings @ 0x00173188 (50369 bytes)

Loading __init_rodata @ 0x0017f64c (172 bytes)

Loading __param @ 0x0017f6f8 (640 bytes)

Clearing .bss @ 0x0017f980 (63128 bytes)

Loading .data @ 0x0018f018 (69608 bytes)

Loading .init.text @ 0x001a0000 (100864 bytes)

Loading .init.data @ 0x001b8a00 (20648 bytes)

Loading .init.setup @ 0x001bdaa8 (584 bytes)

Loading .initcall.init @ 0x001bdcf0 (640 bytes)

Loading .con_initcall.init @ 0x001bdf70 (4 bytes)

Loading .init.ramfs @ 0x001bdf74 (5641092 bytes)

Loading .text_l1 @ 0xffa00000 (5796 bytes)

sh_addr: FFA00000, p_paddr: 0071F2F8

Loading from: 02711000 to 0071F2F8, size: 5796

Loading .data_l1 @ 0xff800000 (224 bytes)

sh_addr: FF800000, p_paddr: 0072099C

Loading from: 02713000 to 0072099C, size: 224

## Starting application at 0x001ad3a8 ...

Linux version 2.6.28-rc2-ADI-2009R1-pre-svn5588 (test@uclinux60-bf527-std) (gcc

version 4.1.2 (ADI svn)) #44 Fri Nov 7 14:05:07 CST 2008

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x00125440

rodata = 0x00125440-0x0017f978

bss = 0x0017f980-0x0018f018

data = 0x0018f018-0x001a0000

stack = 0x0019e000-0x001a0000

init = 0x001a0000-0x00721000

available = 0x00721000-0x03eff000

DMA Zone = 0x03f00000-0x04000000

Hardware Trace Active and Enabled

Compiled for ADSP-BF527 Rev 0.0

ERROR: Not running on ADSP-BF527: unknown CPUID 0x27e0 Rev 0.0

Blackfin Linux support by blackfin.uclinux.org/

Processor Speed: 500 MHz core clock and 100 MHz System Clock

NOMPU: setting up cplb tables for global access

Instruction Cache Enabled

Data Cache Enabled (write-through)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 16001

Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

console handover: boot [early_BFuart0] -> real [ttyBF0]

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

NULL pointer access

Kernel OOPS in progress

Deferred Exception context

No Valid process in current context

return address: [0x00030a22]; contents of:

0x00030a00: e800 0004 b3b1 0d44 183e 326b 6005 6004

0x00030a10: 0000 9128 4870 a0ae a12b 1139 0000 3255

0x00030a20: 0c03 [a057] 600b cc00 c209 912a 0000 060b

0x00030a30: 640e 0c07 6000 0603 564e 5641 e180 9ce1

SEQUENCER STATUS: Not tainted

SEQSTAT: 00060027 IPEND: 8030 SYSCFG: 0006

EXCAUSE : 0x27

physical IVG15 asserted : <0xffa00e04> { _evt_system_call + 0x0 }

logical irq 6 mapped : <0xffa0040c> { _timer_interrupt + 0x0 }

RETE: <0x00000000> { _do_one_initcall + 0xfffff000 }

RETN: <0x0019ff28> /* kernel dynamic memory */

RETX: <0x00000480> /* Maybe fixed code section */

RETS: <0x001b005c> { _free_all_bootmem_core + 0x134 }

PC : <0x00030a22> { ___free_pages_ok + 0x2e }

DCPLB_FAULT_ADDR: <0x00000004> /* Maybe null pointer? */

ICPLB_FAULT_ADDR: <0x0000ffff> { _do_exit + 0x8f }

PROCESSOR STATE:

R0 : 00004af8 R1 : 00000020 R2 : 00000000 R3 : 00000000

R4 : 00000000 R5 : 00000001 R6 : ffffffff R7 : 00000000

P0 : 00774800 P1 : 00774800 P2 : 00000000 P3 : 00774800

P4 : 00000020 P5 : 00774820 FP : 0019ff38 SP : 0019fe4c

LB0: 0008b9ec LT0: 0008b9ec LC0: 00000000

LB1: 0008aeee LT1: 0008aee2 LC1: 00000000

B0 : ffffffe0 L0 : 00000000 M0 : 00000000 I0 : 0000000a

B1 : 00181b40 L1 : 00000000 M1 : 00000000 I1 : 00000000

B2 : 00000040 L2 : 00000000 M2 : 00000000 I2 : 00000000

B3 : 00000000 L3 : 00000000 M3 : 00000000 I3 : 00000000

A0.w: 01e84800 A0.x: 00000000 A1.w: 00000f86 A1.x: 00000000

USP : 001a0000 ASTAT: 02003025

Hardware Trace:

0 Target : <0x000049d8> { _trap_c + 0x0 }

Source : <0xffa00770> { _exception_to_level5 + 0x9c } CALL pcrel

1 Target : <0xffa006d4> { _exception_to_level5 + 0x0 }

Source : <0xffa00556> { _bfin_return_from_exception + 0x6 } RTX

2 Target : <0xffa00550> { _bfin_return_from_exception + 0x0 }

Source : <0xffa0062c> { _ex_trap_c + 0x6c } JUMP.S

3 Target : <0xffa005c0> { _ex_trap_c + 0x0 }

Source : <0xffa007f8> { _trap + 0x28 } JUMP (P4)

4 Target : <0xffa007d0> { _trap + 0x0 }

Source : <0x00030a20> { ___free_pages_ok + 0x2c } 0x0c03

5 Target : <0x00030a20> { ___free_pages_ok + 0x2c }

Source : <0x00030c8e> { ___free_pages_ok + 0x29a } JUMP.S

6 Target : <0x00030c8c> { ___free_pages_ok + 0x298 }

Source : <0x00030a1a> { ___free_pages_ok + 0x26 } IF !CC JUMP

7 Target : <0x00030a10> { ___free_pages_ok + 0x1c }

Source : <0x00030a7c> { ___free_pages_ok + 0x88 } IF CC JUMP

8 Target : <0x00030a6a> { ___free_pages_ok + 0x76 }

Source : <0x00030a62> { ___free_pages_ok + 0x6e } IF CC JUMP

9 Target : <0x00030a5c> { ___free_pages_ok + 0x68 }

Source : <0x00030a54> { ___free_pages_ok + 0x60 } IF CC JUMP

10 Target : <0x000309f4> { ___free_pages_ok + 0x0 }

Source : <0x0003113e> { ___free_pages + 0x26 } JUMP.L

11 Target : <0x00031118> { ___free_pages + 0x0 }

Source : <0x001b89ee> { ___free_pages_bootmem + 0x56 } JUMP.L

12 Target : <0x001b89d2> { ___free_pages_bootmem + 0x3a }

Source : <0x001b89fa> { ___free_pages_bootmem + 0x62 } IF CC JUMP

13 Target : <0x001b89f2> { ___free_pages_bootmem + 0x5a }

Source : <0x001b89e4> { ___free_pages_bootmem + 0x4c } IF !CC JUMP

14 Target : <0x001b89b6> { ___free_pages_bootmem + 0x1e }

Source : <0x001b89fc> { ___free_pages_bootmem + 0x64 } JUMP.S

15 Target : <0x001b89f2> { ___free_pages_bootmem + 0x5a }

Source : <0x001b89e4> { ___free_pages_bootmem + 0x4c } IF !CC JUMP

Kernel Stack

Stack info:

SP: [0x001a0000] <0x001a0000> { __edata + 0x0 }

Memory from 0x001a0000 to 001a2000

001a0000:[0017e14a] e10a6008 9310f988 00000010 0019e14a e10a6050 93101768

00106000

001a0020: 0019e14a e10a6020 93101768 00106000 0017e14a f994e10a 0018e149

e1099310

001a0040: 6000fbc4 e0b268fa 92082002 00106008 0017e14a f998e10a 0018e149

e1099310

001a0060: 6000fbc4 e0b268fa 92082002 00106008 00000000 00000000 00000010

00000000

001a0080: 00000000 00000010 6fa60167 e141b130 30460019 1768e101 e3f76480

6c662fb7

001a00a0: 01276000 00000010 0c0105f3 0004e800 30393218 e3f7181b 304b4f6f

32285001

001a00c0: 304d6c0d 18b3080f 08076410 321710e6 e69061e8 3007fffe 4f5ee3f7

300f3010

001a00e0: 3045640a 5c38e3f7 e14c307d e10c001b 6006dab0 323b2012 99505abb

1c370c00

001a0100: 080861e9 e14a1834 6c64001b dcf0e10a 103509d4 00000000 91650000

e3f73045

001a0120: 0c004f3b 1c113018 3010324b 98299808 10080808 10070208 0c0267fa

600013f8

001a0140: 52082002 17e00c00 a0a00000 17d40c00 0c42ac62 304b1871 00625019

1fd40c00

001a0160: 90776c86 01276000 001005b3 001be14a e10a6c64 09d4dcf0 1fcf600e

17f10c06

001a0180: 61713043 4edce3f7 18050c00 18420c07 14400a07 0017e14c f99ce10c

0c009120

001a01a0: 0c0717e0 00001855 0018e14f fb34e10f 0c42917a 30431849 326f52c7

0015e146

001a01c0: 0017e147 6c256800 3750e106 f9a0e107 0c03201a 324b183a 98083013

08089811

001a01e0: 02081008 67fa1007 13f80c02 20026000 0c005208 0000182a 00000000

6c08906a

001a0200: 18230c42 08486901 320f17e5 934b9326 e1402fe1 304b0015 3728e100

6df8e3f3

001a0220: 90776c86 01276000 001005b3 61e8320f ffffe688 e1402f5b 91210015

3700e100

001a0240: 6de6e3f3 68002f8e 93535e87 e1482f8a e1080018 9100fbc0 18380c00

0017e14d

001a0260: f9a0e10d 91293250 68016002 91106c22 6c090c00 6907180d 18030879

2ff86c22

001a0280: 0015e142 e102304b 6c223770 93292ff1 5e889322 2f659353 21f4e3f3

0012e140

001a02a0: 5440e100 e141b0f0 e1400015 e1000015 e10136cc e12236ec e3f30113

e1406da9

001a02c0: e1000015 e3f336f8 68016b0b 00002fe3 e14d05fd e10d001b 912f8c00

0c070167

001a02e0: 14226f66 001be140 001be141 8c04e101 0200e122 8a00e100 4ff8e3f7

001ae140

001a0300: 0400e100 e141b130 e140001b e1000015 e1013790 cc008a00 b0f7c412

e3f30000

001a0320: 6008ddcb 6ca69328 05bd0127 00000010 016704c3 60086f86 a0f0b0f0

4d683046

001a0340: 32084f68 0019e14a 2ac0e10a 001be14c dcf4e10c b1119109 304c914a

0042e410

001a0360: 0018e14a 844ce10a e1409310 e100001b 0988dcf0 0000100a 32280000

90280000

001a0380: 0640e3f3 1ffb09e5 001be14b df70e10b 6cace300 71fee300 71cae300

9ad6e300

001a03a0: 5a8ee3f4 100c09dc e14d0000 e10d001b 0000dcf4 e3f39028 09dd0625

e14d1ffb

001a03c0: e10d0017 e3f3f998 9128d645 18120c00 60019128 ddbce3f4 1c050c00

93286000

001a03e0: 03d6e300 06cee3f3 01276c86 04836000 e1400010 e1000015 93283840

00002fea

001a0400: 322805f3 001be147 001be140 dab0e100 dcf0e107 e80009b8 30310003

32181044

001a0420: 0015e14c 0015e14f 3890e10c 3898e10f 0000201a 324d915a 98119808

10040808

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001a1a80: 60009042 93105e93 b2b06038 60006981 b0f06942 5a71b130 30435ab2

609a6099

001a1aa0: bdb2bd71 fc6ce3ff 0c453228 0c4d1c07 30381bbd 68072f08 ae312fd5

aeb2adf0

001a1ac0: 5b086004 0012e149 55d4e109 95155c91 191b0a6c 0987a2b0 e14f102a

e10f0017

001a1ae0: 2014f9b8 0017e148 f9ace108 30419142 5a916408 93389911 1ae40c81

40b84348

001a1b00: 64475786 0a38a2b0 e14a1812 e10a0017 9151f9b8 0017e148 f9b4e108

30499100

001a1b20: 1fe10981 f950e3ff 2fe73008 a3315435 50084f18 b2f03210 e4906079

40460001

001a1b40: 4e38cc04 0000a490 14080a08 ce825eab 9310c800 6c0d0000 60822fbc

18910810

001a1b60: 08086089 0e371847 e14f102a e1440017 e10f0017 e104f9b8 2010f9ac

30413204

001a1b80: 91426408 99115a91 0c819338 43481a9b 644740b8 57860e37 e14a1012

e10a0017

001a1ba0: 9151f9b8 0017e148 f9b4e108 30499100 1fe50981 f908e3ff 2fe83008

007fe120

001a1bc0: 64595446 500a3055 09823054 67cf4e3e 1b2f67a9 64503001 18370c38

60025eab

001a1be0: 0c3867f8 17fd9212 60043201 6c5d5b45 0e172f70 e14f102c e1440017

e10f0017

001a1c00: e104f9b8 2010f9ac 30413204 91426408 99115a91 0c819338 43481a55

644740b8

001a1c20: 57860e17 e1481014 e1080017 9141f9b8 0017e14a f9b4e10a 30499110

1fe50981

001a1c40: f8c2e3ff 2fe83008 2f436004 54466038 30556419 3054500a 4e1e0982

67e967ef

001a1c60: 30011ae8 0c386410 5eab1bf0 67f86002 92120c38 320117fd 5b456004

2f296c1d

001a1c80: 10290e0f 0017e14f f9b8e10f e1482013 e1080017 9142f9ac 64083041

99115a91

001a1ca0: 0c819338 43481a0f 644740b8 57860e0f e1481012 e1080017 9141f9b8

0017e14a

001a1cc0: f9b4e10a 30499110 1fe20981 f87ce3ff 2fe83008 54466018 30556419

3054500a

001a1ce0: 4e160982 67e967f7 30011aa4 0c386410 5eab1af0 0c3867f8 17fd9214

5b683201

001a1d00: 2ee76c1d 2ebb6809 e3ffa330 6048f8ed e149b2b0 e14a0017 e1400017

e1090012

001a1d20: e10af9d4 e100f9d8 930e55f6 b0f09317 0012e140 5634e100 304eb130

65803046

001a1d40: b1706541 3043b1b1 e122a1f1 e3ff0101 0c00fb17 0c081805 30381a63

60302db4

001a1d60: e140b270 e1000012 adf05672 e140b0f0 e1000012 b13056ae 65603046

b1705e83

001a1d80: b1b067c0 3042a231 e3ff6002 0c00faf9 18103038 140a0c08 0015e140

3ca8e100

001a1da0: f7fae3ff e3ffa2f0 a330f89f f89ce3ff a2732d8a a2f1a330 b0f3a2b2

f8a8e3ff

001a1dc0: 16370c00 e3ffa330 a2f0f88f f88ce3ff 2d796007 e14a0568 01670019

4fa0e10a

001a1de0: e4106ea6 e1210019 e3f400d0 0c00c393 18863038 60416000 0090e129

1005e0b2

001a1e00: 32125087 93116420 0240e120 32085007 0400e120 50076049 0070e12a

2002e0b2

001a1e20: 32089209 603868c2 2002e0b2 e1209208 50070460 0118e121 68423208

2004e0b2

001a1e40: 92086040 60386409 e140b230 e1000012 b0f055f6 0012e140 5634e100

3046b130

001a1e60: b1706540 b1b067c0 0101e122 e3ff3007 0c00fa87 102e3028 60296000

e0b268f1

001a1e80: 50b81005 64203212 e1409311 e1000012 b0f05672 0012e140 56aee100

3046b130

001a1ea0: b1706520 b1f167c0 60f1b1b0 60023007 fa66e3ff 30300d08 a2b01815

f814e3ff

001a1ec0: e3f43007 302ec043 01276d66 05283005 30070010 c03ae3f4 01276d66

05283005

001a1ee0: a1f30010 a271a2b0 b0f3a232 f810e3ff 1c0c0c00 e3f43007 600dc029

6d662fe6

001a1f00: 0127601d 05283005 30070010 c01ee3f4 e3ffa2b0 a270f7e9 f7e6e3ff

00002fd6

001a1f20: e80005e3 3220000b 007ce120 0020e6b0 e6b06178 61680021 0022e6b0

005ce120

001a1f40: 0023e6b0 0015e140 3cc4e100 60026011 cc4ee3f4 b1300c80 3044188e

60026001

001a1f60: cc46e3f4 30280c80 e1481993 e1080019 e14a4fa0 e10a001b e4008edc

e1210013

001a1f80: 911700d0 c2c6e3f4 0c453228 e121185d e12200e5 e3f70200 323d4d17

8857c682

001a1fa0: 6002300c e3f43005 304ddbd1 e1223005 e3f40200 9928dc45 080860f9

0000196c

001a1fc0: e1410000 91286d6f 722de101 198b0808 00000000 28cde143 e1039128

08183d45

001a1fe0: e1211974 504c0400 30056002 dbaee3f4 3005304d 0200e122 dc22e3f4

e121a628

001a2000: 0808137f

Return addresses in stack:

address : <0x00109910> { _arp_ioctl + 0x50 }

address : <0x00002fd4> { _do_signal + 0x400 }

Modules linked in:

Kernel panic - not syncing: Kernel exception

--- Michael Hennerich 2008-11-10 07:25:16

Preferably I like to remove CONFIG_BFIN_KERNEL_CLOCK option entirely.

The timing parameters we generate are not accurate.

-Any objections?

Michael

--- Sonic Zhang 2008-11-10 23:18:43

But some driver test suite need to change core clock when kernel boots, such as

IDE test, CF test, etc. How about mark it (EXPERIMENTAL) in Kconfig.

--- Michael Hennerich 2008-11-21 05:09:32

Well – I reworked the Clocks and SDRAM memory initialization. However I think

this particular issue is BF527-EZKIT HW related.

VCO Mult = 20, SCLK Div = 5 fails while it works reliably with VCO Mult = 19

and below.

BTW – my board does not even print a single kernel line. As soon as we

release SDRAM Self Refresh and return execution from L1 Instruction back to

SDRAM.

The memory at the return address is already garbage. Something must have caused

the SDRAM to release Self Refresh. The issue sounds similar to the Hibernate

EZKIT HW bug, where we also lose SDRAM data integrity, while turning the PLL

down.

I checked with a CM-BF527 Bluetechnix Board – It was constantly rebooting

several thousand times with VCO Mult = 20, SCLK Div = 5.

No issues at all.

-Michael

--- Michael Hennerich 2008-11-21 05:38:52

I should also mention that as soon as I put Scope Probes onto CLKOUT and SCKE

the issue disappears.

I will follow up the EZKIT HW designers.

It’s definitely not a SW Bug and therefore Rejected.

-Michael

--- Michael Hennerich 2009-01-16 09:38:04

Here we go ...

"SCKELOW is intended to hold SCKE low between RESET deasserting and the

memory controller being configured to put the DRAM in self-refresh.

All pins are intentionally tri-stated when IVDD is removed so that an external

device can access the memory.

A pull down is needed to hold the DRAM in self-refresh."

This Pull-Down is apparently missing on all Blackfin EZKITs.

Close this issue now…

-Michael

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