[U-Boot-Users] USB-storage or NAND-flash on AMCC 440ep (bamboo)
Hi all!
Are there any known bugs for USB-storage on this CPU in u-boot?
We have a custom board based on bamboo and thinking on booting from USB instead of NAND because of the long initiation time for jffs2 on NAND-flash. At the moment JFFS2 initiation takes about 35s, and loading kernel, root-image and a fpga-image to ram take another 1m 40s.
Will it be faster if we use USB-storage instead? We are currently using USB-storage in Linux with ext3 fs.
I'll tried "usb start" command in u-boot but get the following output:
=> usb start (Re)start USB... USB: USB 1.1 Device init scanning bus for devices... 2 USB Device(s) found scanning bus for storage devices... ERROR: CTL:TIMEOUT ERROR: CTL:TIMEOUT ERROR: CTL:TIMEOUT . . . ERROR: CTL:TIMEOUT Device NOT ready Request Sense returned 00 00 00 0 blocks read: ERROR
If I then do "usb tree" I can se that the USB-storage is actually found.
=> usb tree
Device Tree: 1 Hub (12MBit/s, 0mA) | OHCI Root Hub | +-2 Mass Storage (12MBit/s, 100mA) SanDisk Corporation Cruzer Mini SNDK319F2529C8108706
"usb info" shows even more info, but "usb storage" reports no storage device.
=> usb storage No storage devices, perhaps not 'usb start'ed..?
Is USB-storage the way to go or is there a way to speed up jffs2?
Regards, André
###########################################
This message has been scanned by F-Secure Anti-Virus for Microsoft Exchange. For more information, connect to http://www.f-secure.com/
Hi Andre,
On Friday 14 October 2005 11:36, André Berggren wrote:
Are there any known bugs for USB-storage on this CPU in u-boot?
Sorry, but I never tested it. The PPC440EP USB port was done by Embedded Planet for the initial Yosemite port.
We have a custom board based on bamboo and thinking on booting from USB instead of NAND because of the long initiation time for jffs2 on NAND-flash. At the moment JFFS2 initiation takes about 35s, and loading kernel, root-image and a fpga-image to ram take another 1m 40s.
Hmmm. Why don't you partition your NAND chip and use the RAW-NAND interface (e.g. nand read...). This will bring you the fastest boot time.
Best regards, Stefan
On Friday 14 October 2005 11:47, Stefan Roese wrote:
On Friday 14 October 2005 11:36, André Berggren wrote:
Are there any known bugs for USB-storage on this CPU in u-boot?
Sorry, but I never tested it. The PPC440EP USB port was done by Embedded Planet for the initial Yosemite port.
Now, I successfully tested the USB support on Yosemite. Here the result:
=> usb reset (Re)start USB... USB: USB 2.0 Device init scanning bus for devices... 2 USB Device(s) found scanning bus for storage devices... 1 Storage Device(s) found => usb info 1: Hub, USB Revision 1.10 - OHCI Root Hub - Class: Hub - PacketSize: 8 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 0.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Settings 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 2 Interval 255ms
2: Mass Storage, USB Revision 2.0 - M-Sys DiskOnKey 010C5310120103C7 - Class: (from Interface) Mass Storage - PacketSize: 64 Configurations: 1 - Vendor: 0x08ec Product 0x0011 Version 2.0 Configuration: 1 - Interfaces: 1 Bus Powered 94mA Interface: 0 - Alternate Settings 0, Endpoints: 2 - Class Mass Storage, Transp. SCSI, Bulk only - Endpoint 2 In Bulk MaxPacket 64 - Endpoint 1 Out Bulk MaxPacket 64
=> usb storage Device 0: Vendor: M-Sys Prod.: DiskOnKey Rev: 3.04 Type: Removable Hard Disk Capacity: 31.0 MB = 0.0 GB (63616 x 512)
=> fatls usb 0:1 2389 out.gz 4856 hmi1001_eeprom.c
=> fatload usb 0:1 200000 out.gz reading out.gz
2389 bytes read => md 200000 00200000: 1f8b0808 a4d6b242 00036f75 7400edd6 .......B..out... 00200010: ef6b5df5 1900f007 7cdb372e 638375b0 .k].....|.7.c.u. 00200020: 99769339 65cd3d49 83e4cd18 55745cf7 .v.9e.=I....Ut.
The current code seems to be running without any problems on Yosemite.
Best regards, Stefan
participants (2)
-
André Berggren -
Stefan Roese