[#4988] run ./traps_test # sometimes wouldn't echo the new line on some BF537 and BF533 stamp boards

Submitted By: Mingquan Pan

Open Date

2009-03-13 05:21:35 Close Date

2009-05-31 06:10:49

Priority:

Medium High Assignee:

Graf Yang

Status:

Closed Fixed In Release:

N/A

Found In Release:

N/A Release:

Category:

N/A Board:

N/A

Processor:

BF537 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

Jan 17 2009

App binary format:

N/A

Summary: run ./traps_test # sometimes wouldn't echo the new line on some BF537 and BF533 stamp boards

Details:

run ./traps_test # sometimes wouldn't echo the new line on some BF537 and BF533 stamp boards.

bfin> bootm

## Booting image at 02000000 ...

Image Name: Linux-2.6.28.7-ADI-2009R1-pre-sv

Created: 2009-03-09 23:12:27 UTC

Image Type: Blackfin Linux Kernel Image (gzip compressed)

Data Size: 4089976 Bytes = 3.9 MB

Load Address: 00001000

Entry Point: 0018a3c4

Verifying Checksum ... OK

Uncompressing Kernel Image ... OK

Starting Kernel at = 18a3c4

Linux version 2.6.28.7-ADI-2009R1-pre-svn6161 (test@uclinux52-ad73311-lcd) (gcc version 4.1.2 (ADI svn)) #6 Tue Mar 10 07:12:13 CST 2009

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Warning: limiting memory to 56MB due to hardware anomaly 05000263

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x0010a5b0

rodata = 0x0010a5b0-0x0015c810

bss = 0x0015c810-0x0016b2c4

data = 0x0016b2c4-0x0017c000

stack = 0x0017a000-0x0017c000

init = 0x0017c000-0x007a7000

available = 0x007a7000-0x037ff000

DMA Zone = 0x03f00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 0

Compiled for ADSP-BF537 Rev 0.2

Blackfin Linux support by blackfin.uclinux.org/

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

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

Data Cache Enabled for CPU0 (write-back)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 14223

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: 48924k/65536k RAM, (6316k init code, 1061k kernel code, 455k data, 1024k dma, 7756k reserved)

Calibrating delay loop... 997.37 BogoMIPS (lpj=1994752)

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 (41 KB free)

PDA for CPU0 reserved at 0015d8f8

net_namespace: 288 bytes

NET: Registered protocol family 16

Blackfin GPIO Controller

Blackfin DMA Controller

stamp_init(): registering device resources

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

msgmni has been set to 95

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler cfq registered

Serial: Blackfin serial driver

bfin-uart.1: ttyBF0 at MMIO 0xffc00400 (irq = 18) is a BFIN-UART

brd: module loaded

bfin_mii_bus: probed

bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=19)@sclk=100MHz)

bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@7

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 1970-02-26 01:46:25 UTC (4844785)

Freeing unused kernel memory: 6316k freed

dma_alloc_init: dma_page @ 0x007a3000 - 256 pages at 0x03f00000

_____________________________________

a8888b. / Welcome to the uClinux distribution \

d888888b. / _ _ \

8P"YP"Y88 / | | |_| __ __ (TM) |

8|o||o|88 _____/ | | _ ____ _ _ \ \/ / |

8' .88 \ | | | | _ \| | | | \ / |

8`._.' Y8. \ | |__ | | | | | |_| | / \ |

d/ `8b. \ \____||_|_| |_|\____|/_/\_\ |

dP . Y8b. \ For embedded processors including |

d8:' " `::88b \ the Analog Devices Blackfin /

d8" 'Y88b \___________________________________/

:8P ' :888

8a. : _a88P For further information, check out:

._/"Yaa_: .| 88P| - blackfin.uclinux.org/

\ YP" `| 8P `. - docs.blackfin.uclinux.org/

/ \.___.d| .' - www.uclinux.org/

`--..__)8888P`._.' jgs/a:f - www.analog.com/blackfin

Have a lot of fun...

BusyBox v1.13.2 (2009-03-10 05:22:36 CST) built-in shell (msh)

Enter 'help' for a list of built-in commands.

root:/>

root:/> cd bin/

root:/bin>

root:/bin> ./traps_test #

21root:/bin>

root:/bin> ./traps_test #

On this specific bf537 board,

failed version: uclinux-dist:7856, linux:6161

passed version: uclinux-dist:7833, linux:6155

This uImage is attached.

Follow-ups

--- Graf Yang 2009-04-09 07:15:00

I can see this bug in your passed version: uclinux-dist:7833, linux:6155

So, it maybe exist for longer time.

--- Mike Frysinger 2009-04-09 07:20:57

are you actually running "traps_test #" ? or just

"traps_test" ?

the code is pretty simple ... if this is broken, it sounds like everything is

screwed up ...

int main(int argc, char *argv[])

{

if (argc == 1) {

printf("%li\n", ARRAY_SIZE(bad_funcs) - 1);

return EXIT_SUCCESS;

}

.....

--- Graf Yang 2009-04-09 07:31:36

I do just tested "traps_test".

But I also tested "traps_test #", just now.

The same result.

--- Graf Yang 2009-04-15 03:44:26

Add a SSYNC() into bfin_serial_dma_tx_chars() to ensure DMA registers are

written with new data.

This bug is not related with traps_test, echo a char into /dev/ttyBF0 also can

reproduce this bug.

PIO mode is OK.

--- Mingquan Pan 2009-05-31 06:10:49

This issue is not seen now. So close.

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[#4988] run ./traps_test # sometimes wouldn't echo the new line on some BF537 and BF533 stamp boards