[#6047] Kernel can not wake up from mem in latest trunk
Submitted By: Vivi Li
Open Date
2010-05-31 00:12:45 Close Date
2010-06-23 06:08:52
Priority:
Medium Assignee:
Michael Hennerich
Status:
Closed Fixed In Release:
N/A
Found In Release:
2010R1 Release:
Category:
Drivers Board:
N/A
Processor:
ALL Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Fixed
Uboot version or rev.:
Toolchain version or rev.:
trunk-2010_Apr_07
App binary format:
N/A
Summary: Kernel can not wake up from mem in latest trunk
Details:
Kernel can not wake up from mem. Standby mode is OK.
Last passed version:
--
kernel: Linux release 2.6.34-ADI-2010R1-pre-svn8855, build #127 Thu May 27 20:01:42 GMT 2010
toolchain: bfin-uclinux-gcc release gcc version 4.3.4 (ADI-trunk/svn-3951)
user-dist: release svn-9648, build #1464 Thu May 27 20:00:25 GMT 2010
--
First failed version:
--
kernel: Linux release 2.6.34-ADI-2010R1-pre-svn8860, build #131 Sat May 29 02:51:28 GMT 2010
toolchain: bfin-uclinux-gcc release gcc version 4.3.4 (ADI-trunk/svn-3951)
user-dist: release svn-9649, build #1548 Sat May 29 02:50:23 GMT 2010
--
Bellow is the log:
--
Linux version 2.6.34-ADI-2010R1-pre-svn8862 (test@uclinux58-mmc-usblan-btuart) (gcc version 4.3.4 (ADI-trunk/svn-3951) ) #135 Su0
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 = 0x00001000-0x00117c68
rodata = 0x00117c68-0x001764e0
bss = 0x00177000-0x001875e0
data = 0x001875e0-0x0019a000
stack = 0x00198000-0x0019a000
init = 0x0019a000-0x007ef000
available = 0x007ef000-0x03800000
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: 48652k/65536k RAM, (6484k init code, 1115k kernel code, 521k data, 1024k dma, 7740k reserved)
Hierarchical RCU implementation.
NR_IRQS:138
Configuring Blackfin Priority Driven Interrupts
console [ttyBF0] enabled, bootconsole disabled
console [ttyBF0] enabled, bootconsole disabled
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 (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
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
msgmni has been set to 95
io scheduler noop registered
io scheduler cfq 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: 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
IP-Config: Complete:etting system clock to 2014-11-12 14:38:36 UTC (1415803116)
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 @ 0x02850000 - 256 pages at 0x03f00000
Freeing unused kernel memory: 6484k freed
_____________________________________
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 v1.16.1 (2010-05-30 09:37:25 GMT) hush - the humble shell
root:/> PHY: 0:01 - Link is Up - 100/Full
root:/>
root:/>
root:/> rtcwake -s 10 -m mem
wakeup from "mem" at Wed Nov 12 14:38:53 2014
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)
--
Follow-ups
--- Michael Hennerich 2010-06-16 04:37:49
This bug is caused by commit svn:8859 => 8860 (bfin: allow cache funcs to be
in L1 for anomaly 491)
The resume code restores L1 content in bf53x_resume_l1_mem().
It therefore uses dma_memcpy().
However dma_memcpy() calls blackfin_dcache_flush_range() which is also in L1,
but not present.
Since caches are off while this happens, a solution is to provide a
dma_memcpy() that doesn't do flush/invalidate.
early_dma_memcpy() could be an option however it is marked __init section.
Mike what do you think?
--- Michael Hennerich 2010-06-16 05:10:57
New function dma_memcpy_nocache()
Fixed on svn trunk.
--- Vivi Li 2010-06-23 06:06:06
OK. Close it.
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File Name File Type File Size Posted By
config.power application/octet-stream 35782 Vivi Li