I follow the instructions in http://elinux.org/Suspend_To_Disk_For_ARM
download source and remodify kernel
(https://github.com/russdill/linux/commit/49d80fe10f549f83c2b8225e4571b490e506c515)
Here is my step .
1. create a swap partition /dev/mmcblk0p3
(p1 is u-boot, p2 is filesystem)
/dev/mmcblk0p1 * 63 144584 72261 c W95 FAT32 (LBA)
/dev/mmcblk0p2 144585 1269134 562275 83 Linux
/dev/mmcblk0p3 1269135 15523839 7127352+ 82 Linux swap / Solars
2. swap
root@am335x-evm:/media/card# mkswap /dev/mmcblk0p3
Setting up swapspace version 1, size = 7298404864 bytes
root@am335x-evm:/media/card# swapon /dev/mmcblk0p3
[ 2638.347900] Adding 7127348k swap on /dev/mmcblk0p3. Priority:-1 extents:1 aS
root@am335x-evm:/media/card#
3.set resume in uEnv.txt
root@am335x-evm:/media# cat uEnv.txt
resume=/dev/mmcblk0p3
root@am335x-evm:/media#
4. suspend to disk
root@am335x-evm:/media# echo disk > /sys/power/state
[ 2797.956970] PM: Syncing filesystems ... done.
[ 2797.962249] Freezing user space processes ... (elapsed 0.01 seconds) done.
[ 2797.985748] PM: Preallocating image memory... done (allocated 7286 pages)
[ 2798.103729] PM: Allocated 29144 kbytes in 0.11 seconds (264.94 MB/s)
[ 2798.110382] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) do.
[ 2798.136047] Suspending console(s) (use no_console_suspend to debug)
[ 2798.145355] PM: freeze of devices complete after 2.716 msecs
[ 2798.145721] PM: late freeze of devices complete after 0.335 msecs
[ 2798.147216] PM: Creating hibernation image:
[ 2798.248565] PM: Need to copy 7227 pages
[ 2798.498382] PM: Hibernation image created (7227 pages copied)
[ 2798.500366] PM: early thaw of devices complete after 0.274 msecs
[ 2798.516387] PM: thaw of devices complete after 15.930 msecs
[ 2798.558715] PM: Using 1 thread(s) for compression.
[ 2798.558746] PM: Compressing and saving image data (7235 pages) ... 0%
[ 2798.5893 1%
[ 2798.6116 2%
[ 2798.6337 3%
[ 2798.6659 4%
[ 2798.6880 5%
[ 2798.7102 6%
[................
[ 2800.2537 93%
[ 2800.2727100%
[ 2801.4912done
[ 2801.493560] PM: Wrote 28940 kbytes in 2.92 seconds (9.91 MB/s)
[ 2802.159545] PM: S
[ 2802.164916] |
[ 2802.195098] Suspending console(s) (use no_console_suspend to debug)
5. after that , the system is suspended, I unplug an plug power.....
but it not work. it boot normal without resume the suspending system.
U-Boot SPL 2013.04-dirty (Jul 10 2013 - 14:02:53)
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
OMAP SD/MMC: 0
mmc_send_cmd : timeout: No status update
reading u-boot.img
reading u-boot.img
U-Boot 2013.04-dirty (Jul 10 2013 - 14:02:53)
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
gpio: pin 53 (gpio 53) value is 1
mmc0 is current device
micro SD card found
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 0
reading uEnv.txt
22 bytes read in 10 ms (2 KiB/s)
Loaded environment from uEnv.txt
Importing environment from mmc ...
gpio: pin 55 (gpio 55) value is 1
3152520 bytes read in 377 ms (8 MiB/s)
gpio: pin 56 (gpio 56) value is 1
** File not found /boot/am335x-boneblack.dtb **
Booting from mmc ...
## Booting kernel from Legacy Image at 80007fc0 ...
Image Name: Linux-3.2.0-12581-g8ed7d75-dirty
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3152456 Bytes = 3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
U-Boot#
U-Boot SPL 2013.01.01 (Jun 25 2013 - 16:42:52)
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img
U-Boot 2013.01.01 (Jun 25 2013 - 16:42:52)
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
mmc0 is current device
SD/MMC found on device 0
reading uEnv.txt
22 bytes read in 10 ms (2 KiB/s)
Loaded environment from uEnv.txt
Importing environment from mmc ...
reading uImage
3152520 bytes read in 311 ms (9.7 MiB/s)
Booting from mmc ...
## Booting kernel from Legacy Image at 80007fc0 ...
Image Name: Linux-3.2.0-12581-g8ed7d75-dirty
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3152456 Bytes = 3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
XIP Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Linux version 3.2.0-12581-g8ed7d75-dirty (kuso@veda) (gcc versio4
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instructie
[ 0.000000] Machine: am335xevm
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] AM335X ES2.0 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pa8
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 e
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 512MB = 512MB total
[ 0.000000] Memory: 513240k/513240k available, 11048k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff000000 ( 488 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0591000 (5668 kB)
[ 0.000000] .init : 0xc0591000 - 0xc05ce000 ( 244 kB)
[ 0.000000] .data : 0xc05ce000 - 0xc062e6e8 ( 386 kB)
[ 0.000000] .bss : 0xc062e70c - 0xc065b824 ( 181 kB)
[ 0.000000] NR_IRQS:399
[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrus
[ 0.000000] Total of 128 interrupts on 1 active controller
[ 0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
[ 0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 1s
[ 0.000000] Console: colour dummy device 80x30
[ 0.000122] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[ 0.089263] pid_max: default: 32768 minimum: 301
[ 0.089355] Security Framework initialized
[ 0.089416] Mount-cache hash table entries: 512
[ 0.089721] CPU: Testing write buffer coherency: ok
[ 0.089935] Setting up static identity map for 0x8041ea60 - 0x8041eaa8
[ 0.108947] omap_hwmod: pruss: failed to hardreset
[ 0.109893] print_constraints: dummy:
[ 0.110168] NET: Registered protocol family 16
[ 0.111785] OMAP GPIO hardware version 0.1
[ 0.113769] omap_mux_init: Add partition: #1: wkup, flags: 0
[ 0.113952] omap_mux_init: Add partition: #2: per, flags: 0
[ 0.115264] omap_i2c.1: alias fck already exists
[ 0.115936] omap2_mcspi.1: alias fck already exists
[ 0.116088] omap2_mcspi.2: alias fck already exists
[ 0.116271] edma.0: alias fck already exists
[ 0.116302] edma.0: alias fck already exists
[ 0.116302] edma.0: alias fck already exists
[ 0.135559] bio: create slab <bio-0> at 0
[ 0.137268] SCSI subsystem initialized
[ 0.138519] usbcore: registered new interface driver usbfs
[ 0.138732] usbcore: registered new interface driver hub
[ 0.138885] usbcore: registered new device driver usb
[ 0.139129] registerd cppi-dma Intr @ IRQ 17
[ 0.139129] Cppi41 Init Done Qmgr-base(e087a000) dma-base(e0878000)
[ 0.139129] Cppi41 Init Done
[ 0.139160] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
[ 0.139434] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
[ 0.159271] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[ 0.160369] tps65910 1-002d: could not be detected
[ 0.161224] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.162078] Switching to clocksource gp timer
[ 0.173553] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 0.173706] musb-hdrc musb-hdrc.0: dma type: dma-cppi41 ......
What's wrong with my process? or miss some step..
Thanks.
