FAQ: [#6916] BF537-STAMP kernel fails to boot up with RTS/CTS enabled(2011)

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[#6916] BF537-STAMP kernel fails to boot up with RTS/CTS enabled

Submitted By: Vivi Li

Open Date

2011-12-01 02:27:52     Close Date

2011-12-06 03:38:02

Priority:

Medium High     Assignee:

Sonic Zhang

Status:

Closed     Fixed In Release:

N/A

Found In Release:

2011R1     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.:

gcc4.3-2011R1-RC2

App binary format:

N/A     

Summary: BF537-STAMP kernel fails to boot up with RTS/CTS enabled

Details:

 

BF537-STAMP kernel fails to boot up with RTS/CTS enabled.

This is found in 2011 branch.

 

--

U-Boot 2011.09-svn2741 (ADI-2011R1) (Nov 10 2011 - 12:06:38)

 

CPU:   ADSP bf537-0.2 (Detected Rev: 0.2) (bypass boot)

Board: ADI BF537 stamp board

       Support: http://blackfin.uclinux.org/

Clock: VCO: 500 MHz, Core: 500 MHz, System: 125 MHz

RAM:   64 MiB

Flash: 4 MiB

MMC:

In:    serial

Out:   serial

Err:   serial

KGDB:  [on serial] ready

Net:   bfin_mac

Hit any key to stop autoboot:  0

bfin> run ramboot

Using bfin_mac device

TFTP from server 10.100.4.174; our IP address is 10.100.4.50

Filename 'uImage'.

Load address: 0x1000000

Loading: T #################################################################

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

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

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

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

done

Bytes transferred = 4768707 (48c3c3 hex)

## Booting kernel from Legacy Image at 01000000 ...

   Image Name:   bf537-0.2-3.0.8-ADI-2011R1-svn10

   Created:      2011-12-01   6:10:40 UTC

   Image Type:   Blackfin Linux Kernel Image (gzip compressed)

   Data Size:    4768643 Bytes = 4.5 MiB

   Load Address: 00001000

   Entry Point:  001b3c48

   Verifying Checksum ... OK

   Uncompressing Kernel Image ... OK

Starting Kernel at = 001b3c48

Linux version 3.0.8-ADI-2011R1-svn10231 (test@linux73-bf537-wt-adxl) (gcc version 4.3.5 (ADI-2011R1-RC2) ) #93 Thu Dec 1 14:10:31

register early platform devices

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart0] enabled

early printk enabled on early_BFuart0

Limiting kernel memory to 56MB due to anomaly 05000263

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x001284d8

  rodata    = 0x001284d8-0x00188b98

  bss       = 0x00189000-0x00198b28

  data      = 0x00198b28-0x001ac000

    stack   = 0x001aa000-0x001ac000

  init      = 0x001ac000-0x008d5000

  available = 0x008d5000-0x03800000

  DMA Zone  = 0x03f00000-0x04000000

Hardware Trace active and enabled

Boot Mode: 0

Blackfin support (C) 2004-2010 Analog Devices, Inc.

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

  External memory: cacheable in instruction cache

Data Cache Enabled for CPU0

  External memory: cacheable (write-back) in data cache

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 14224

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 ip=10.100.4.50f

PID hash table entries: 256 (order: -2, 1024 bytes)

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

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

Memory available: 47692k/65536k RAM, (7332k init code, 1181k kernel code, 527k data, 1024k dma, 7780k reserved)

NR_IRQS:146

Configuring Blackfin Priority Driven Interrupts

console [ttyBF0] enabled, bootconsole disabled

console [ttyBF0] enabled, bootconsole disabled

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

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

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

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

Blackfin L1 Instruction SRAM: 48 KB (35 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

stamp_init(): registering device resources

bio: create slab <bio-0> at 0

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

Switching to clocksource bfin_cs_cycles

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

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

debug-mmrs: setting up Blackfin MMR debugfs

msgmni has been set to 93

io scheduler noop registered (default)

bfin-uart: Blackfin serial driver

bfin-uart.0: 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=24)@sclk=125MHz)

bfin_mac bfin_mac.0: eth0: Blackfin on-chip Ethernet MAC driver, Version 1.1

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 1970-01-03 18:12:10 UTC (238330)

IP-Config: Complete:

     device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

     host=bf537-stamp, domain=, nis-domain=(none),

     bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

dma_alloc_init: dma_page @ 0x02947000 - 256 pages at 0x03f00000

------------[ cut here ]------------

WARNING: at drivers/gpio/gpiolib.c:101 _gpio_ensure_requested+0x5a/0xbc()

autorequest GPIO-22

Modules linked in:

Hardware Trace:

   0 Target : <0x00128294> { _dump_stack + 0x0 }

     Source : <0x000113e2> { _warn_slowpath_common + 0x46 } CALL pcrel

   1 Target : <0x000113e2> { _warn_slowpath_common + 0x46 }

     Source : <0x00032472> { _print_modules + 0x4e } RTS

   2 Target : <0x0003246c> { _print_modules + 0x48 }

     Source : <0x00128468> { _printk + 0x14 } RTS

   3 Target : <0x00128464> { _printk + 0x10 }

     Source : <0x00012034> { _vprintk + 0x164 } RTS

   4 Target : <0x00012028> { _vprintk + 0x158 }

     Source : <0x0001201a> { _vprintk + 0x14a } IF CC JUMP pcrel

   5 Target : <0x00012012> { _vprintk + 0x142 }

     Source : <0x00012142> { _vprintk + 0x272 } JUMP.S

   6 Target : <0x00012142> { _vprintk + 0x272 }

     Source : <0x00011c38> { _console_unlock + 0x1a8 } RTS

   7 Target : <0x00011c30> { _console_unlock + 0x1a0 }

     Source : <0x00011c22> { _console_unlock + 0x192 } IF CC JUMP pcrel

   8 Target : <0x00011c12> { _console_unlock + 0x182 }

     Source : <0x00011c04> { _console_unlock + 0x174 } IF CC JUMP pcrel (BP)

   9 Target : <0x00011bfc> { _console_unlock + 0x16c }

     Source : <0x0002868e> { _up + 0x3e } RTS

  10 Target : <0x00028688> { _up + 0x38 }

     Source : <0x0002867a> { _up + 0x2a } IF CC JUMP pcrel (BP)

  11 Target : <0x00028650> { _up + 0x0 }

     Source : <0x00011bf8> { _console_unlock + 0x168 } CALL pcrel

  12 Target : <0x00011bd6> { _console_unlock + 0x146 }

     Source : <0x00011aee> { _console_unlock + 0x5e } IF CC JUMP pcrel

  13 Target : <0x00011ac2> { _console_unlock + 0x32 }

     Source : <0x00011b24> { _console_unlock + 0x94 } IF CC JUMP pcrel (BP)

  14 Target : <0x00011b1c> { _console_unlock + 0x8c }

     Source : <0x00011606> { __call_console_drivers + 0x62 } RTS

  15 Target : <0x00011600> { __call_console_drivers + 0x5c }

     Source : <0x000115da> { __call_console_drivers + 0x36 } IF CC JUMP pcrel

Stack info:

SP: [0x0201bca0] <0x0201bca0> /* kernel dynamic memory */

FP: (0x0201bdf8)

Memory from 0x0201bca0 to 0201c000

0201bca0:[0201bcec] 000113e6  0201bcec  00166b00  00000000  00166b00  00000065  000a0a9e

0201bcc0: 00011450  00199804  00000016  0000ffff  00000016  00000000  0019ec08  00000000

0201bce0: 001890fc  00000009  0201bcec <00166b84> 0201bd04  000a0a9e  00036e5e  0293b8e0

0201bd00: 00000049  00000016  000a0c26  00199804  00195544  00500001  00500001  020092c4

0201bd20: 000ad254  000ad26c  02009200  02906600  00500001  00000000  0287f7c0  00000026

0201bd40: 00500001  00000000  0201bd58  00000023  00167898  02009200  03f00000 <000ab86e>

0201bd60: 02009200  000a843e  00000000  00000001  0287f7c0  000ac482  02906600  02938400

0201bd80: 001a24ac  00500001  02906630  00500001  0206b164  00000001 <000a4742> 0206b160

0201bda0: 02938400  00500001  00000000  00000001  00000000  000b3a68 <000b3aa6> 0201a000

0201bdc0: 00000002  00000000  027946d4 <0004f382> 00196080  02796650  0287f7c0  00000000

0201bde0: 0200e940  00000002  00000026  02796650  0201be74  0201bdf8 (00000000)<0004bca0>

0201be00: 0287f7c0  02796650  0004f314  00000000  0201bf90  00000000  0201be74  0201bebc

0201be20: 0004be70  0287f7c0  0201bf00  0201bf00  00000000  02019660  00000000  00053602

0201be40: 02796650  00000000  02019660  00055802  02796650  027949d4  00000000  00000000

0201be60: 02073005  00000000  0201bea0  0201be74  027949d4  02796650  0201bec8  00056762

0201be80: 0201bf00  0201bf90  00000000  0201a000  00000000  0201bebc  02073000  00000000

0201bea0: 00129404  02018eb4  02073000  0201bec4  0201bedc  ffa01e00  00129404  0200e940

0201bec0: 027946d4  00000000  00000000  00056a0e  0201bf00  00000002  00000000  00000001

0201bee0: 0201bf90  ffffff9c  02073000  00000000  04000000  000000d0  0201bf90  00000041

0201bf00: 0200e940  027946d4  05b6719b  00000007  02073005  00000000  02012794  02796650

0201bf20: 00000101  00000004  00000000  00000000  001a29fc  0005deba  0201cbc0  0201cbc8

0201bf40: 0201cbc4  00000000  00000000  00000002  00000000  00000003  00000000  00000000

0201bf60: 0004ba4a  ffffff9c  00000001  00000000  00000000  02073000  00000000  00000000

0201bf80: 00000000  00000001  00000000  00000000  00000002  00000000  00000026  00000100

0201bfa0: 0004baf4  001c4864  001c4640  001c4864  00000002  00000000  00000000  00000000

0201bfc0: 001c4640  001c4864  00000000  00000000  001ac172  00000000  00000000  00000000

0201bfe0: 00000000

00000000  00000000  00000000  00000000  ffffffff  00000006

Return addresses in stack:

    address : <0x00166b84> /* kernel dynamic memory */

    address : <0x000ab86e> { _uart_startup + 0x56 }

    address : <0x000a4742> { _tty_open + 0x18e }

    address : <0x000b3aa6> { _kobj_lookup + 0x8e }

    address : <0x0004f382> { _chrdev_open + 0x6e }

   frame  1 : <0x0004bca0> { ___dentry_open + 0xcc }

    address : <0x00001556> { _kernel_thread_helper + 0x6 }

---[ end trace 20e9a1cbb779ea36 ]---

Freeing unused kernel memory: 7332k freed

PHY: 0:01 - Link is Up - 100/Full

--

 

Follow-ups

 

--- Sonic Zhang                                              2011-12-05 02:03:25

Fixed. Requesting CTS PIN only when serial device starts up.

 

--- Vivi Li                                                  2011-12-06 03:55:50

OK in latest 2011R1 branch.

Close it.

 

 

 

    Files

    Changes

    Commits

    Dependencies

    Duplicates

    Associations

    Tags

 

File Name     File Type     File Size     Posted By

config.config.rts_cts    application/octet-stream    51869    Vivi Li

config.linux.rts_cts    application/octet-stream    35830    Vivi Li

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