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

[#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

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

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

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.

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