Fedora ARM Secondary Architecture/SheevaPlug

SheevaPlug Specifications

Sheeva CPU Core

1.2 GHz operation

L1 Cache: 16K Instruction + 16K Data

L2 Cache: 256KB

Memory

DDR2 400MHz, 16-bit bus

512MB DDR2: 1Gb x8, 4 devices

Power efficient Samsung devices

NAND FLASH Controller, 8-bit bus

512MB NAND FLASH: 4Gb x8, direct boot

128-bit eFuse Memory

Power

Power input: 100-240VAC/50-60Hz 19W DC Consumption: 5V/3.0A High efficiency POL DC-DC converters

Development Interface

System Development Board JTAG and Console Interface via USB SDIO expansion JTAG OpenOCD support via USB High Speed I/O & Peripherals

GE, USB 2.0 Host RTC w/ Battery

UL/CE/FCC certified

For more information

Accessing SheevaPlug from a Windows 7 box

Step 1: Connect the device using the mini USB -> USB cable.

Step 2: Chances are Windows will struggle to find drivers for the device so just use the SheevaPlug_Host_SWsupportPackageWindowsHost.zip file that is included in the DevKit CD. Unzip it and use Device Manager to browse for the TeraTerm Drivers (located as a sub directory in the zip file you just extracted).

Step 3: Windows will find 2 devices (USB Converter A and B) A = JTAG port B = serial port. We want to connect to the serial port.

Step 4: Click on Port B, select properties and in the Advance tab ensure LOAD VCP is selected.

Step 5: Unplug the device, and plug it back in.

Step 6: Using PuTTY, connect to the COM port of "PORT B" and make sure the SPEED is set to 115200.

Step 7: You might need to press ENTER once or twice to get the prompt to actually show (sounds silly but it took me a while to figure that out lol).

Step 8: Login using the default authentication information (username = root ) (password = nosoup4u)

Another HOW-TO for connecting to the SheevaPlug

Installing F12 on an SD

Step 1: Plug an ethernet cable into the SheevaPlug and connect it to your router.

Step 2: Check the DHCP table on the router to find out the IP that was assigned to the SheevaPlug (i.e. 192.168.15.109)

Step 3: SSH root@<ip address> (i.e. 192.168.15.109)

Step 4: Insert the SD card into the SheevaPlug's card reader slot.

Step 5: dmesg | tail (shows the mount point) (i.e. /dev/mmc1)

Step 6: Partition the SD card using fdisk /dev/mmc1 (Delete any existing partitions)

Step 7: Create a new partition (C) accept the defaults, make it bootable (a), verify it (p) and write the new partition table (w)

Step 8: Create the file system using mkfs.ext3 /dev/mmc1

Step 9: Get the Kernel wget http://ftp.linux.org.uk/pub/linux/arm/fedora/platforms/sheevaplug/uImage-2.6.30-sheevaplug and Distro http://ftp.linux.org.uk/pub/linux/arm/fedora/rootfs/rootfs-f12.tar.bz2

• NOTE: WGET may not be installed on the SheevaPlug so run "yum install wget"
  • NOTE: If you are not connected to the internet run route add default gw <ip address> and add the name server to /etc/resolv.conf

Step 10: Create a mount point using mkdir /media/flash. Mount the SD card using /dev/mmc1 /media/flash. Uncompress the file system using tar -jxf rootfs-f12.tar.bz2. Copy the filesystem over to the SD card using cp -r rootfs-f12/* /media/flash. Copy the the kernel over to the SD card using cp uImage-2.6.30-sheevaplug/media/flash/boot

Booting F12(on the SD) from SheevaPlug

In order boot from the SD card, u-boot must be configured. Depending on what version of u-boot you have, you might have to take an extra step in upgrading u-boot. Use the link below for the upgrade procedures.

[How-TO on Upgrading U-Boot]

If you have the newest version or have finished upgrading continue to the following steps:

Step 1: Reboot the SheevaPlug, and during the countdown, interrupt it by pressing any key.

Step 2: Run the following commands:

• Marvell>> setenv mainlineLinux yes
• Marvell>> setenv arcNumber 2097
• Marvell>> setenv bootargs_console console=ttyS0,115200
• Marvell>> setenv bootargs_root 'rw root=/dev/mmcblk0p1 rootdelay=10 rootfstype=ext2'
• Marvell>> setenv bootcmd_mmc 'mmcinit; ext2load mmc 0 0x800000 /boot/uImage-2.6.30-sheevaplug'
• Marvell>> setenv bootcmd 'setenv bootargs $(bootargs_console) $(bootargs_root); run bootcmd_mmc; bootm 0x0800000'
• Marvell>> saveenv
• Marvell>> reset

Step 3: Once the device reboots, you should be prompted with the fedora-arm login. Login using "root" and the password is "fedoraarm"