[#5338] cat string from target to host through sport uart would lost chars

Submitted By: Mingquan Pan

Open Date

2009-07-10 06:37:06 Close Date

2009-08-09 23:18:31

Priority:

Medium Assignee:

Sonic Zhang

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:

Not reproducible

Uboot version or rev.:

Toolchain version or rev.:

09r1-rc1

App binary format:

N/A

Summary: cat string from target to host through sport uart would lost chars

Details:

cat string from target to host through sport uart would lost chars.

## Booting kernel from Legacy Image at 02000000 ...

Image Name: Linux-2.6.28.10-ADI-2009R1-svn69

Created: 2009-07-10 4:14:23 UTC

Image Type: Blackfin Linux Kernel Image (gzip compressed)

Data Size: 5255269 Bytes = 5 MB

Load Address: 00001000

Entry Point: 0018889c

Verifying Checksum ... OK

Uncompressing Kernel Image ... OK

Starting Kernel at = 0018889c

Linux version 2.6.28.10-ADI-2009R1-svn6950 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #83 Fri Jul 10 12:14:09 CST 2009

bootconsole [early_shadow0] enabled

bootconsole [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 = 0x00001000-0x00105010

rodata = 0x00105010-0x00156238

bss = 0x00157000-0x00168720

data = 0x00168720-0x0017a000

stack = 0x00178000-0x0017a000

init = 0x0017a000-0x0099e000

available = 0x0099e000-0x037ff000

DMA Zone = 0x03f00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 0

Reset caused by Software reset

Compiled for ADSP-BF537 Rev 0.2

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 500 MHz core clock and 125 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 ip=10.100.4.50 ip=10.100.4.50:10.100.4.174:192.168.0.1:255.255.255.0:bf537-stamp:eth0:off

Configuring Blackfin Priority Driven Interrupts

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

console handover:boot [early_BFuart0] boot [early_shadow0] -> real [ttyBF0]

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

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

Memory available: 46924k/65536k RAM, (8336k init code, 1040k kernel code, 468k data, 1024k dma, 7744k reserved)

Calibrating delay loop... 995.32 BogoMIPS (lpj=1990656)

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 (37 KB free)

net_namespace: 288 bytes

NET: Registered protocol family 16

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 91

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

bfin-sport-uart.0: ttySS0 at MMIO 0xffc00800 (irq = 12) is a SPORT0

bfin-sport-uart.1: ttySS1 at MMIO 0xffc00900 (irq = 14) is a SPORT1

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=24)@sclk=125MHz)

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 1970-01-02 01:30:10 UTC (91810)

IP-Config: Gateway not on directly connected network.

Freeing unused kernel memory: 8336k freed

dma_alloc_init: dma_page @ 0x0099b000 - 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| - http://blackfin.uclinux.org/

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

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

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

Have a lot of fun...

BusyBox v1.13.4 (2009-07-09 12:02:20 CST) built-in shell (msh)

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

root:/> verPHY: 0:01 - Link is Up - 100/Full

sion

kernel: Linux release 2.6.28.10-ADI-2009R1-svn6950, build #83 Fri Jul 10 12:14:09 CST 2009

toolchain: bfin-uclinux-gcc release gcc version 4.1.2 (ADI svn)

user-dist: release svn-8468, build #40 Fri Jul 10 12:13:21 CST 2009

root:/>

root:/> cat /proc/cmdline > ccc

root:/> stty -F /dev/ttySS0 cs7 ispeed 57600 ospeed 57600 -icrnl igncr min 1 tim

e 0

Warning: If you don\'t want to get rx underflow whenreceive rx

data on sport, don\'t use 8 bit uart mode.

root:/> cat /dev/ttySS0 > aaa

spawn /bin/sh

sh-3.00$ rcp root@10.100.4.50:/ccc .

sh-3.00$ stty -F /dev/ttyUSB0 cs7 ispeed 57600 ospeed 57600 -icrnl -ixon igncr -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoke -hupcl -echoctl min 1 time 0

sh-3.00$ cat ccc > /dev/ttyUSB0

sh-3.00$

Still wait.

root:/>

root:/> diff -u ccc aaa

root:/>

Case 1 ...PASS

stty -F /dev/ttySS0 cs7 ispeed 57600 ospeed 57600 -icrnl igncr min 1 ti

me 0

root:/> ls

bbb build_serial_uart_kernel.exp ccc serial_uart_test.exp sport_uart_test.exp

build_serial_kernel.exp build_sport_uart_kernel.exp serial_test.exp serial_uart_test_log

sh-3.00$ stty -F /dev/ttyUSB0 cs7 ispeed 57600 ospeed 57600 -icrnl igncr min 1 time 0

sh-3.00$ cat /dev/ttyUSB0 > bbb

wait for receiving data...

cat ccc > /dev/ttySS0

root:/>

Still wait.

sh-3.00$ diff -u ccc bbb

--- ccc 2009-07-10 18:23:26.000000000 +0800

+++ bbb 2009-07-10 18:24:33.000000000 +0800

@@ -1 +1 @@

-root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600 ip=10.100.4.50 ip=10.100.4.50:10.100.4.174:192.168.0.1:255.255.255.0:bf537-stamp:eth0:off

+oot=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600 ip=10.100.4.50 ip=10.100.4.50:10.100.4.174:192.168.0.1:255.255.255.0:bf537-stamp:eth0:off

sh-3.00$

*******************************************************************

Follow-ups

--- Sonic Zhang 2009-07-13 02:40:04

Can't replicate.

root:/> vPHY: 0:01 - Link is Up - 100/Full

ersion

kernel: Linux release 2.6.28.10-ADI-2009R1-svn6924, build #42 Mon Jul 13

14:22:21 CST 2009

toolchain: bfin-uclinux-gcc release gcc version 4.1.2 (ADI svn)

user-dist: release svn-8416, build #21 Mon Jul 13 14:21:48 CST 2009

root:/>

root:/> cat /proc/kallsyms > ccc

root:/> stty -F /dev/ttySS0 cs7 ispeed 57600 ospeed 57600 -icrnl igncr min 1

tim

e 0

Warning: If you don't want to get rx underflow whenreceive rx

data on sport, don't use 8 bit uart mode.

root:/> cat /dev/ttySS0 > aaa

spawn /bin/sh

eight:~/projects/uClinux-dist/testsuites/serial # rcp root@10.100.4.50:/ccc .

eight:~/projects/uClinux-dist/testsuites/serial # stty -F /dev/ttyUSB0 cs7

ispeed 57600 ospeed 57600 -icrnl -ixon igncr -opost -onlcr -isig -icanon -iexten

-echo -echoe -echok -echoke -hupcl -echoctl min 1 time 0

eight:~/projects/uClinux-dist/testsuites/serial # cat ccc > /dev/ttyUSB0

eight:~/projects/uClinux-dist/testsuites/serial #

Still wait.

root:/>

root:/> diff -u ccc aaa

root:/>

Case 1 ...PASS

stty -F /dev/ttySS0 cs7 ispeed 57600 ospeed 57600 -icrnl igncr min 1 ti

me 0

root:/> ls

.svn build_serial_kernel.exp build_sport_uart_kernel.exp

serial_test.exp serial_uart_test_log

bbb build_serial_uart_kernel.exp ccc

serial_uart_test.exp sport_uart_test.exp

eight:~/projects/uClinux-dist/testsuites/serial # stty -F /dev/ttyUSB0 cs7

ispeed 57600 ospeed 57600 -icrnl igncr min 1 time 0

eight:~/projects/uClinux-dist/testsuites/serial # cat /dev/ttyUSB0 > bbb

wait for receiving data...

cat ccc > /dev/ttySS0

root:/>

Still wait.

eight:~/projects/uClinux-dist/testsuites/serial # diff -u ccc bbb

eight:~/projects/uClinux-dist/testsuites/serial #

Case 2 ...PASS

--- Mingquan Pan 2009-08-10 04:18:41

The cases can pass at the first time when the USB UART line is pluged into my

host machine. This issue has something related to my host machine. So close

here.

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