[#6647] bf561-ezkit SMP kernel sometimes can't wake up from standby mode through uart
Submitted By: Vivi Li
Open Date
2011-06-15 06:33:52 Close Date
2011-07-24 23:10:27
Priority:
Medium Assignee:
steven miao
Status:
Closed Fixed In Release:
N/A
Found In Release:
2011R1 Release:
Category:
N/A Board:
N/A
Processor:
BF561 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Out of Date
Uboot version or rev.:
Toolchain version or rev.:
gcc4.3-2010_Dec_09
App binary format:
N/A
Summary: bf561-ezkit SMP kernel sometimes can't wake up from standby mode through uart
Details:
On bf561-ezkit SMP kernel, can't wake up from standby mode through uart sometimes.
--
Linux version 2.6.39.1-ADI-2011R1-pre-svn9931 (test@uclinux65-561-SMP) (gcc version 4.3.5 (ADI-trunk/svn-5013) ) #6 SMP Tue Jun 1
register early platform devices
bootconsole [early_shadow0] enabled
bootconsole [early_BFuart0] enabled
early printk enabled on early_BFuart0
Board Memory: 64MB
Kernel Managed Memory: 60MB
Memory map:
fixedcode = 0x00000400-0x00000490
text = 0x00001000-0x001313f0
rodata = 0x00131400-0x0018c5d4
bss = 0x0018d000-0x0019f288
data = 0x0019f2a0-0x001b2000
stack = 0x001b0000-0x001b2000
init = 0x001b2000-0x00707000
available = 0x00707000-0x03b00000
DMA Zone = 0x03b00000-0x03c00000
Hardware Trace active and enabled
Boot Mode: 0
Blackfin support (C) 2004-2010 Analog Devices, Inc.
Compiled for ADSP-BF561 Rev 0.5
Blackfin Linux support by http://blackfin.uclinux.org/
Processor Speed: 600 MHz core clock and 100 MHz System Clock
NOMPU: setting up cplb tables
NOMPU: setting up cplb tables
Instruction Cache Enabled for CPU0
External memory: cacheable in instruction cache
L2 SRAM : uncacheable in instruction cache
Data Cache Enabled for CPU0
External memory: cacheable (write-through) in data cache
L2 SRAM : uncacheable in data cache
PERCPU: Embedded 7 pages/cpu @0078c000 s4480 r8192 d16000 u32768
Built 1 zonelists in Zone order, mobility grouping off. Total pages: 14986
Kernel command line: root=/dev/mtdblock0 rw clkin_hz=30000000 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 mem=60M max_mef
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: 52580k/61440k RAM, (5460k init code, 1216k kernel code, 516k data, 1024k dma, 644k reserved)
Hierarchical RCU implementation.
NR_IRQS:153
Configuring Blackfin Priority Driven Interrupts
console [ttyBF0] enabled, bootconsole disabled
console [ttyBF0] enabled, bootconsole disabled
Calibrating delay loop... 1185.79 BogoMIPS (lpj=2371584)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Booting Core B.
Brought up 2 CPUs
Instruction Cache Enabled for CPU1
External memory: cacheable in instruction cache
L2 SRAM : uncacheable in instruction cache
Data Cache Enabled for CPU1
External memory: cacheable (write-through) in data cache
L2 SRAM : uncacheable in data cache
SMP: Total of 2 processors activated (0.00 BogoMIPS).
Blackfin Scratchpad data SRAM: 4 KB
Blackfin Scratchpad data SRAM: 4 KB
Blackfin L1 Data A SRAM: 16 KB (16 KB free)
Blackfin L1 Data A SRAM: 16 KB (16 KB free)
Blackfin L1 Data B SRAM: 16 KB (16 KB free)
Blackfin L1 Data B SRAM: 16 KB (16 KB free)
Blackfin L1 Instruction SRAM: 16 KB (15 KB free)
Blackfin L1 Instruction SRAM: 16 KB (15 KB free)
Blackfin L2 SRAM: 128 KB (127 KB free)
NET: Registered protocol family 16
Blackfin DMA Controller
ezkit_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_base@ffc00500, dma channel@16
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: 2, 16384 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 128 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
NET: Registered protocol family 1
debug-mmrs: setting up Blackfin MMR debugfs
msgmni has been set to 102
io scheduler noop registered (default)
bfin-uart: Blackfin serial driver
bfin-uart.0: ttyBF0 at MMIO 0xffc00400 (irq = 35) is a BFIN-UART
brd: module loaded
physmap platform flash device: 00800000 at 20000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000020 Chip ID 0x0022ed
Amd/Fujitsu Extended Query Table at 0x0040
Amd/Fujitsu Extended Query version 1.3.
physmap-flash.0: Swapping erase regions for top-boot CFI table.
number of CFI chips: 1
RedBoot partition parsing not available
Using physmap partition information
Creating 5 MTD partitions on "physmap-flash.0":
0x000000000000-0x000000040000 : "bootloader(nor)"
0x000000040000-0x000000200000 : "linux kernel(nor)"
0x000000200000-0x0000007f0000 : "file system(nor)"
0x0000007f0000-0x0000007fe000 : "config(nor)"
0x0000007fe000-0x000000800000 : "u-boot env(nor)"
smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>
eth0: SMC91C11xFD (rev 2) at 2c010300 IRQ 82 [nowait]
eth0: Ethernet addr: 00:e0:22:fe:ba:2a
bfin-wdt: initialized: timeout=20 sec (nowayout=0)
TCP cubic registered
NET: Registered protocol family 17
smc91x smc91x.0: eth0: link down
IP-Config: Complete:
device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,
host=bf561-ezkit, domain=, nis-domain=(none),
bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=
Freeing unused kernel memory: 5460k freed
smc91x smc91x.0: eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
_____________________________________
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 - https://www.analog.com/blackfin
Have a lot of fun...
BusyBox v1.18.4 (2011-06-14 15:58:16 GMT) hush - the humble shell
root:/> echo enabled > /sys/class/tty/ttyBF0/power/wakeup
root:/> cat /sys/class/tty/ttyBF0/power/wakeup
enabled
root:/> echo standby > /sys/power/state
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.01 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
PM: suspend of devices complete after 4.000 msecs
PM: late suspend of devices complete after 0.001 msecs
Disabling non-boot CPUs ...
Enabling non-boot CPUs ...
Booting Core B.
Instruction Cache Enabled for CPU1
External memory: cacheable in instruction cache
L2 SRAM : uncacheable in instruction cache
Data Cache Enabled for CPU1
External memory: cacheable (write-through) in data cache
L2 SRAM : uncacheable in data cache
CPU1 is up
PM: early resume of devices complete after 0.001 msecs
smc91x smc91x.0: eth0: link down
PM: resume of devices complete after 56.000 msecs
Restarting tasks ... done.
root:/>
root:/> smc91x smc91x.0: eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
root:/>
root:/> echo standby > /sys/power/state
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.01 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.02 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
--
Follow-ups
--- Vivi Li 2011-07-24 23:05:25
In recent trunk, this bug has disappeared.
Close it.
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Duplicates
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Tags
File Name File Type File Size Posted By
config.linux.uart_wakeup application/octet-stream 29442 Vivi Li