Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 22, 2024 01:11AM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 22, 2024 01:43AM |
Registered: 5 weeks ago Posts: 60 |
$ scripts/config --disable MODULE_COMPRESS_NONE $ scripts/config --enable MODULE_COMPRESS $ scripts/config --enable MODULE_COMPRESS_XZThat reduces the disk space for the modules from ~90 MB to ~30 MB!
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 22, 2024 04:50PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 04:09AM |
Registered: 5 weeks ago Posts: 60 |
https://billauer.co.il/blog/2020/04/ftrace-printk-tracing-debugging/ https://www.kernel.org/doc/html/v5.0/trace/ftrace.html https://docs.kernel.org/trace/boottime-trace.html https://docs.kernel.org/admin-guide/kernel-parameters.html#kernelparametersI rebuilt my UBIFS enabled version of your 6.10.11 kernel with the kernel configuration options to enable the function_graph and function tracers:
$ cd ~/linux-kernels/linux-6.10.11 $ ARCH=arm CROSS_COMPILE=arm-none-eabi- make mrproper $ cp ../config-6.10.11-kirkwood-UBIFS-2 .config $ scripts/config --set-str LOCALVERSION "-kirkwood-UBIFS-ftrace" $ scripts/config --enable LOCALVERSION_AUTO $ scripts/config --disable MODULE_COMPRESS_NONE $ scripts/config --enable MODULE_COMPRESS $ scripts/config --enable MODULE_COMPRESS_XZ $ scripts/config --enable FUNCTION_TRACER $ scripts/config --enable FUNCTION_GRAPH_TRACER $ scripts/config --enable STACK_TRACER $ scripts/config --enable DYNAMIC_FTRACE $ ARCH=arm CROSS_COMPILE=arm-none-eabi- make oldconfig $ cp .config ../config-6.10.11-kirkwood-UBIFS-ftraceI made sure usb_disconnect() could be traced:
# grep usb_disconnect /sys/kernel/debug/tracing/available_filter_functions usb_disconnectI enabled tracing calls to usb_disconnect():
root@comlogger:~# echo usb_disconnect > /sys/kernel/debug/tracing/set_ftrace_filter root@comlogger:~# echo function > /sys/kernel/debug/tracing/current_tracer root@comlogger:~# echo > /sys/kernel/debug/tracing/traceThen I unplugged the USB stick and reinserted it into my Nimbus.
root@comlogger:~# less /sys/kernel/debug/tracing/trace # tracer: function # # entries-in-buffer/entries-written: 0/0 #P:1 # # _-----=> irqs-off/BH-disabled # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / _-=> migrate-disable # |||| / delay # TASK-PID CPU# ||||| TIMESTAMP FUNCTION # | | | ||||| | | /sys/kernel/debug/tracing/trace (END)I am guessing that it is the USB hub itself built into the Nimbus that has been disabled by Linux. By the time I am able to trace calls to usb_disconnect(), it is too late.
# cat /proc/cmdline console=ttyS0,115200 cmdlinepart.mtdparts=orion_nand:1m@0m(u-boot),4m@1m(kernel),5m@5m(pluginfo),-(rootfs) ubi.mtd=rootfs rootfstype=ubifs root=ubi0:rootfs rw earlyprintk=serial ftrace=function ftrace_filter="usb_disconnect"
# cat /proc/cmdline console=ttyS0,115200 cmdlinepart.mtdparts=orion_nand:1m@0m(u-boot),4m@1m(kernel),5m@5m(pluginfo),-(rootfs) ubi.mtd=rootfs rootfstype=ubifs root=ubi0:rootfs rw earlyprintk=serial kernel.ftrace=function kernel.ftrace_filter="usb_disconnect"That didn't work either. That is, there is nothing in the trace buffer for either cmdline.
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 02:47PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 03:06PM |
Admin Registered: 13 years ago Posts: 19,014 |
md.l 0xF1010100 1 md.l 0xF1010140 1 usb info usb tree md.l 0xF1010100 1 md.l 0xF1010140 1
md.l 0xF1010100 1 md.l 0xF1010140 1 usb reset usb info usb tree md.l 0xF1010100 1 md.l 0xF1010140 1
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 04:06PM |
Registered: 5 weeks ago Posts: 60 |
Marvell>> md.l 0XF1010100 1 00000000: 08008000 .... Marvell>> md.l 0XF1010140 1 00000000: 08008000 .... Marvell>> usb info USB is stopped. Please issue 'usb start' first. Marvell>> usb start (Re)start USB... USB: Register 10011 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... 1 USB Device(s) found scanning bus for storage devices... 0 Storage Device(s) found Marvell>> usb info 1: Hub, USB Revision 2.0 - u-boot EHCI Host Controller - Class: Hub - PacketSize: 64 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 1.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Setting 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms Marvell>> usb tree Device Tree: 1 Hub (480 Mb/s, 0mA) u-boot EHCI Host Controller Marvell>> md.l 0XF1010100 1 00000000: 08008000 .... Marvell>> md.l 0XF1010140 1 00000000: 08008000 ....> Attach the Lexar USB drive, and
Marvell>> md.l 0XF1010100 1 00000000: 08008000 .... Marvell>> md.l 0XF1010140 1 00000000: 08008000 .... Marvell>> usb reset (Re)start USB... USB: Register 10011 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... 2 USB Device(s) found scanning bus for storage devices... 1 Storage Device(s) found Marvell>> usb info 1: Hub, USB Revision 2.0 - u-boot EHCI Host Controller - Class: Hub - PacketSize: 64 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 1.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Setting 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms 2: Mass Storage, USB Revision 2.0 - LEXAR JD FIREFLY 1069A704000328051007 - Class: (from Interface) Mass Storage - PacketSize: 64 Configurations: 1 - Vendor: 0x05dc Product 0xa701 Version 17.0 Configuration: 1 - Interfaces: 1 Bus Powered 100mA Interface: 0 - Alternate Setting 0, Endpoints: 2 - Class Mass Storage, Transp. SCSI, Bulk only - Endpoint 1 In Bulk MaxPacket 512 - Endpoint 2 Out Bulk MaxPacket 512 Marvell>> usb tree Device Tree: 1 Hub (480 Mb/s, 0mA) | u-boot EHCI Host Controller | +-2 Mass Storage (480 Mb/s, 100mA) LEXAR JD FIREFLY 1069A704000328051007 Marvell>> md.l 0XF1010100 1 00000000: 08008000 .... Marvell>> md.l 0XF1010140 1 00000000: 08008000 ....Larry Baker
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 04:07PM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 04:39PM |
Admin Registered: 13 years ago Posts: 19,014 |
> Marvell>> md.l 0XF1010100 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010140 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010100 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010140 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010100 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010140 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010100 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010140 1 > 00000000: 08008000 ....
U-Boot 2011.03-rc1 (Jun 23 2011 - 14:26:27) IONICS-PlugComputer NIMBUS E0 SoC: Kirkwood 88F6281_A0 DRAM: 512 MiB NAND: 512 MiB In: serial Out: serial Err: serial Net: egiga0 88E1116 Initialized on egiga0 Hit any key to stop autoboot: 3 0 Marvell>> md.l 0xF1010000 8 f1010000: 01111111 11113322 00001111 00100000 ...."3.......... f1010010: 00000000 00000000 00000000 00000000 ................ Marvell>> md.l 0xF1010100 1 f1010100: dfff ffff .... Marvell>> md.l 0xF1010140 1 f1010140: fffdffff ....
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 05:31PM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 06:11PM |
Admin Registered: 13 years ago Posts: 19,014 |
> Marvell>> md.l 0XF1010100 1 > 00000000: 08008000 .... > Marvell>> md.l 0XF1010140 1 > 00000000: 08008000 ....
Bank 1: GPIO 27 GPIO 15 Bank 2: 27 15 (therefore GPIO 59 and 47) ---- GPIO 47 should be for the SD slot.
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 06:36PM |
Registered: 5 weeks ago Posts: 60 |
Marvell>> md.l 0xF1010100 1 f1010100: dfffffff .... Marvell>> md.l 0xF1010140 1 f1010140: fffdffff ....Use 0X instead of 0x:
Marvell>> md.l 0XF1010100 1 00000000: 08008000 .... Marvell>> md.l 0XF1010400 1 00000000: 08008000 ....Go figure.
Marvell>> reset resetting ... U-Boot 2011.03-rc1 (Jun 23 2011 - 14:26:27) IONICS-PlugComputer NIMBUS E0 SoC: Kirkwood 88F6281_A0 DRAM: 512 MiB NAND: 512 MiB In: serial Out: serial Err: serial Net: egiga0 88E1116 Initialized on egiga0 Hit any key to stop autoboot: 0 Marvell>>Nothing plugged in to the USB port:
Marvell>> md.l 0xF1010100 1 f1010100: dfffffff .... Marvell>> md.l 0xF1010140 1 f1010140: fffdffff ....Plug in the USB drive:
Marvell>> md.l 0xF1010100 1 f1010100: dfffffff .... Marvell>> md.l 0xF1010140 f1010140: fffdffff .... Marvell>> usb start (Re)start USB... USB: Register 10011 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... 2 USB Device(s) found scanning bus for storage devices... 1 Storage Device(s) found Marvell>> usb info 1: Hub, USB Revision 2.0 - u-boot EHCI Host Controller - Class: Hub - PacketSize: 64 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 1.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Setting 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms 2: Mass Storage, USB Revision 2.0 - LEXAR JD FIREFLY 1069A704000328051007 - Class: (from Interface) Mass Storage - PacketSize: 64 Configurations: 1 - Vendor: 0x05dc Product 0xa701 Version 17.0 Configuration: 1 - Interfaces: 1 Bus Powered 100mA Interface: 0 - Alternate Setting 0, Endpoints: 2 - Class Mass Storage, Transp. SCSI, Bulk only - Endpoint 1 In Bulk MaxPacket 512 - Endpoint 2 Out Bulk MaxPacket 512 Marvell>> usb tree Device Tree: 1 Hub (480 Mb/s, 0mA) | u-boot EHCI Host Controller | +-2 Mass Storage (480 Mb/s, 100mA) LEXAR JD FIREFLY 1069A704000328051007 Marvell>> md.l 0xF1010100 1 f1010100: dfffffff .... Marvell>> md.l 0xF1010140 1 f1010140: fffdffff ....Sorry,
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 07:12PM |
Admin Registered: 13 years ago Posts: 19,014 |
ver md.l 0xF1010100 1 md.l 0xF1010140 1 init_ionics mode bootup md.l 0xF1010100 1 md.l 0xF1010140 1
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 08:57PM |
Registered: 5 weeks ago Posts: 60 |
Marvell>> ver U-Boot 2011.03-rc1 (Jun 23 2011 - 14:26:27) IONICS-PlugComputer NIMBUS E0 arm-none-linux-gnueabi-gcc (GCC) 4.2.1 GNU ld (GNU Binutils) 2.18.50.20070820 Marvell>> md.l 0xF1010100 1 f1010100: dfffffff .... Marvell>> md.l 0xF1010140 1 f1010140: fffdffff .... Marvell>> init_ionics mode bootup Marvell>> md.l 0xF1010100 1 f1010100: fffdffff .... Marvell>> md.l 0xF1010140 1 f1010140: dfffffff ....The bits changed! You are clever. :)
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 09:56PM |
Registered: 5 weeks ago Posts: 60 |
Marvell>> ver U-Boot 1.1.4 (Dec 27 2009 - 22:03:21) Marvell version: 3.4.27 - pingtoo patch.01 Marvell>> md.l 0xF1010100 1 f1010100: 20000000 ... Marvell>> md.l 0xF1010140 1 f1010140: fffc7fff ....USB drive inserted:
Marvell>> md.l 0xF1010100 1 f1010100: 20000000 ... Marvell>> md.l 0xF1010140 1 f1010140: fffc7fff .... Marvell>> usb start (Re)start USB... USB: scanning bus for devices... 2 USB Device(s) found Waiting for storage device(s) to settle before scanning... 1 Storage Device(s) found Marvell>> usb info 1: Hub, USB Revision 2.0 - Marvell EHCI - Class: Hub - PacketSize: 64 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 1.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Settings 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms 2: Mass Storage, USB Revision 2.0 - LEXAR JD FIREFLY 1069A704000328051007 - Class: (from Interface) Mass Storage - PacketSize: 64 Configurations: 1 - Vendor: 0x05dc Product 0xa701 Version 17.0 Configuration: 1 - Interfaces: 1 Bus Powered 100mA Interface: 0 - Alternate Settings 0, Endpoints: 2 - Class Mass Storage, Transp. SCSI, Bulk only - Endpoint 1 In Bulk MaxPacket 512 - Endpoint 2 Out Bulk MaxPacket 512 Marvell>> usb tree Device Tree: 1 Hub (480MBit/s, 0mA) | Marvell EHCI | +-2 Mass Storage (480MBit/s, 100mA) LEXAR JD FIREFLY 1069A704000328051007 Marvell>> md.l 0xF1010100 1 f1010100: 20000000 ... Marvell>> md.l 0xF1010140 1 f1010140: fffc7fff ....Larry Baker
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 10:21PM |
Admin Registered: 13 years ago Posts: 19,014 |
fffd ffff = fff 1101 ffff GPIO 16 18 19
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 10:25PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 10:26PM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 10:41PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 11:32PM |
Registered: 5 weeks ago Posts: 60 |
# # # NO USB DRIVE PLUGGED IN # # lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub # # # PLUG IN USB DRIVE # # # NOTHING # # # POKE GPIO PIN 16 # # /bin/echo 16 > /sys/class/gpio/export # /bin/echo "out" > /sys/class/gpio/gpio16/direction # /bin/echo 1 > /sys/class/gpio/gpio16/value # dmesg | tail [ 15.482971] systemd[1]: Finished modprobe@efi_pstore.service - Load Kernel Module efi_pstore. [ 15.543749] systemd[1]: Started systemd-journald.service - Journal Service. [ 16.393551] systemd-journald[154]: Received client request to flush runtime journal. [ 16.436478] systemd-journald[154]: File /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal corrupted or uncleanly . [ 18.741204] random: crng init done [ 21.952223] orion_wdt: Initial timeout 21 sec [ 22.567239] marvell-cesa f1030000.crypto: CESA device successfully registered [ 26.608641] mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled [ 38.689928] systemd-journald[154]: Oldest entry in /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal is older tha. [ 38.741231] systemd-journald[154]: /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal: Journal header limits reach. # /bin/echo 0 > /sys/class/gpio/gpio16/value # /bin/echo 16 > /sys/class/gpio/unexport # # # POKE GPIO PIN 18 # # /bin/echo 18 > /sys/class/gpio/export # /bin/echo "out" > /sys/class/gpio/gpio18/direction # /bin/echo 1 > /sys/class/gpio/gpio18/value # dmesg | tail [ 15.482971] systemd[1]: Finished modprobe@efi_pstore.service - Load Kernel Module efi_pstore. [ 15.543749] systemd[1]: Started systemd-journald.service - Journal Service. [ 16.393551] systemd-journald[154]: Received client request to flush runtime journal. [ 16.436478] systemd-journald[154]: File /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal corrupted or uncleanly . [ 18.741204] random: crng init done [ 21.952223] orion_wdt: Initial timeout 21 sec [ 22.567239] marvell-cesa f1030000.crypto: CESA device successfully registered [ 26.608641] mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled [ 38.689928] systemd-journald[154]: Oldest entry in /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal is older tha. [ 38.741231] systemd-journald[154]: /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal: Journal header limits reach. # /bin/echo 0 > /sys/class/gpio/gpio18/value # /bin/echo 18 > /sys/class/gpio/unexport # # # POKE GPIO PIN 19 # # /bin/echo 19 > /sys/class/gpio/export # /bin/echo "out" > /sys/class/gpio/gpio19/direction # /bin/echo 1 > /sys/class/gpio/gpio19/value # dmesg | tail [ 15.482971] systemd[1]: Finished modprobe@efi_pstore.service - Load Kernel Module efi_pstore. [ 15.543749] systemd[1]: Started systemd-journald.service - Journal Service. [ 16.393551] systemd-journald[154]: Received client request to flush runtime journal. [ 16.436478] systemd-journald[154]: File /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal corrupted or uncleanly . [ 18.741204] random: crng init done [ 21.952223] orion_wdt: Initial timeout 21 sec [ 22.567239] marvell-cesa f1030000.crypto: CESA device successfully registered [ 26.608641] mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled [ 38.689928] systemd-journald[154]: Oldest entry in /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal is older tha. [ 38.741231] systemd-journald[154]: /var/log/journal/21927d5753f772dd477263aa6718016e/system.journal: Journal header limits reach. # /bin/echo 0 > /sys/class/gpio/gpio19/value # /bin/echo 19 > /sys/class/gpio/unexportNothing seems to have happened. :(
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 23, 2024 11:50PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 12:22AM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 12:37AM |
Registered: 5 weeks ago Posts: 60 |
https://drive.google.com/file/d/1dGnPQuPU-7rBPw_mr9_GyrzOvZdlE8q9/view?usp=sharingLarry Baker
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 01:07AM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 03:18AM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 12:27PM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 01:19PM |
Admin Registered: 13 years ago Posts: 19,014 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 02:09PM |
Registered: 5 weeks ago Posts: 60 |
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 02:32PM |
Admin Registered: 13 years ago Posts: 19,014 |
Quote
Unbricking with Serial Console & JTAG console
How to unbrick your box using serial console with kwboot (Zyxel NAS pinouts and examples)
Quote
uboot.2017.07-tld-2.sheevaplug.bodhi.tar or
https://www.dropbox.com/s/h2nmofkd15dd7um/uboot.2017.07-tld-1.sheevaplug.bodhi.tar
md5
0fcae49e99ca3e7d24da31177c230c93
sha256
a645a6602f987b0c938e52c87fd3044b12c810299977a1899309a6ce28e6ae8c
Re: Please add built-in kernel UBIFS support for Kirkwood and any other boards with on-board eMMC flash October 24, 2024 02:59PM |
Registered: 5 weeks ago Posts: 60 |
U-Boot 2023.01+dfsg-2+deb12u1 (Apr 18 2024 - 22:00:21 +0000) Marvell-Sheevaplug SoC: Kirkwood 88F6281_A0 DRAM: 512 MiB Core: 14 devices, 11 uclasses, devicetree: separate NAND: 512 MiB MMC: mvsdio@90000: 0 Loading Environment from NAND... OK In: serial Out: serial Err: serial Net: eth0: ethernet-controller@72000 Hit any key to stop autoboot: 0 =>Also attached are my notes (Backup and Restore Debian Linux.docx) for using the Nimbus OpenOCD tools to completely wipe out and restore the flash.