Back in 2010,
I wrote how to put Fedora 12 on a GuruPlug. Now in 2012, I find myself wanting a more modern operating system. Knowing that a Fedora 17 image is available, I want to prepare my GuruPlug to boot Fedora 17. One goal that I didn't achieve last time was to boot using an initrd so that I could have LVM volume management (and presumably encryption) of the root filesystem. At the time, the uboot code to support loading an image from MMC was not yet available, so instead I opted to use the GuruPlug flash for the kernel (using a non-Fedora kernel) and boot directly to the partitioned ext3 formatted root.
I was having to use a non-Fedora kernel which was less than optimal. Also, having the kernel in nand made it harder to update. If we have it on the micro SD card, its easy to update using standard update utilities (yum).
Now the uboot image is available, and we can load both uImage and uInitrd from MMC, so I'm going to do some upgrades.
First item is to get that updated uboot code loaded. Again, we are lucky that someone else had done the work of compiling for us.
On this page, you can download the updated uboot 2011.12 (Jan 08 2012) image (
u-boot.kwb). In my previous explanation of upgrading, I explained tftp loading of the images. This time, I'm going to use a usb stick. Newer uboots seem much less finicky.
Be sure and printenv a copy of your environment as you will lose all these settings on upgrade.
U-Boot 2010.03-01161-gd91b0a9 (Apr 22 2010 - 03:24:41)
Marvell-GuruPlug
SoC: Kirkwood 88F6281_A0
DRAM: 512 MB
NAND: 512 MiB
In: serial
Out: serial
Err: serial
Net: egiga0, egiga1
88E1121 Initialized on egiga0
88E1121 Initialized on egiga1
Hit any key to stop autoboot: 0
Marvell>> printenv
bootcmd=${x_bootcmd_usb}; ${x_bootcmd_kernel}; setenv bootargs ${x_bootargs} ${x_bootargs_root}; bootm 0x6400000
bootdelay=3
baudrate=115200
x_bootcmd_usb=usb start
x_bootcmd_kernel=nand read.e 0x6400000 0x100000 0x400000
x_bootargs=console=ttyS0,115200
ethact=egiga0
ethaddr=01:02:03:04:05:06
eth1addr=01:02:03:04:05:07
x_bootargs_root=ubi.mtd=2 root=0811 rootdelay=10
stdin=serial
stdout=serial
stderr=serial
Environment size: 412/131068 bytes
Marvell>> usb start
(Re)start USB...
USB: Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 3 USB Device(s) found
scanning bus for storage devices... Device NOT ready
Request Sense returned 02 3A 00
1 Storage Device(s) found
Marvell>> usb part
## Unknown partition table
Partition Map for USB device 1 -- Partition Type: DOS
Partition Start Sector Num Sectors Type
1 63 15794113 c
## Unknown partition table
## Unknown partition table
## Unknown partition table
Marvell>> fatload usb 1:1 0x0800000 u-boot.kwb
reading u-boot.kwb
......................
227200 bytes read
Marvell>> nand erase 0x0 0x60000
NAND erase: device 0 offset 0x0, size 0x60000
Erasing at 0x40000 -- 100% complete.
OK
Marvell>> nand write 0x0800000 0x0 0x60000
NAND write: device 0 offset 0x0, size 0x60000
393216 bytes written: OK
Marvell>> reset
resetting ...
U-Boot 2011.12 (Jan 08 2012 - 21:46:50)
Marvell-GuruPlug
SoC: Kirkwood 88F6281_A0
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: 512 MiB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: egiga0, egiga1
88E1121 Initialized on egiga0
88E1121 Initialized on egiga1
Hit any key to stop autoboot: 0
Marvell>>
Note that I searched for partitions and uboot told me that my USB FAT filesystem was on USB (for GuruPlug MMC appears as USB) device 1, parition 1, or 1:1.
Now we need to fix the environment that was lost.
Marvell>> setenv ethaddr 01:02:03:04:05:06
Marvell>> setenv eth1addr 01:02:03:04:05:07
Marvell>> setenv x_bootcmd_usb 'usb start'
Marvell>> setenv x_bootcmd_kernel 'nand read.e 0x6400000 0x100000 0x400000'
Marvell>> setenv x_bootargs_root 'root=ubi.mtd=2 root=0811 rootdelay=10'
Marvell>> setenv bootcmd '${x_bootcmd_usb}; ${x_bootcmd_kernel}; setenv bootargs
${x_bootargs} ${x_bootargs_root}; bootm 0x6400000'
Marvell>> saveenv
Saving Environment to NAND...
Erasing Nand...
Erasing at 0x60000 -- 100% complete.
Writing to Nand... done
Marvell>>
That gets you back to where you were, but with the updated uboot. If you want to go ahead and update to Fedora 17, you can then download the Kirkwood ARM image, copy it to a micro SD card, and then boot it by changing these variables:
bootargs=console=ttyS0,115200 root=LABEL=rootfs rootdelay=10
bootcmd=run x_bootcmd_usb; ${x_bootcmd_uimage}; ${x_bootcmd_uinitrd}; setenv bo}
x_boot_mem=bootm 0x00800000 0x01100000
x_bootargs=console=ttyS0,115200
x_bootargs_root=root=LABEL=rootfs rootdelay=10
x_bootcmd_ethernet=ping 192.168.2.1
x_bootcmd_kernel=nand read.e 0x6400000 0x100000 0x400000
x_bootcmd_uimage=fatload usb 1:1 0x00800000 uImage-kirkwood
x_bootcmd_uinitrd=fatload usb 1:1 0x01100000 uInitrd-kirkwood
x_bootcmd_usb=usb start; usb tree; usb part; fatinfo usb 1; fatls usb 1
Then your boot will look something like this:
U-Boot 2011.12 (Jan 08 2012 - 21:46:50)
Marvell-GuruPlug
SoC: Kirkwood 88F6281_A0
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: 512 MiB
In: serial
Out: serial
Err: serial
Net: egiga0, egiga1
88E1121 Initialized on egiga0
88E1121 Initialized on egiga1
Hit any key to stop autoboot: 0
(Re)start USB...
USB: Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 3 USB Device(s) found
scanning bus for storage devices... Device NOT ready
Request Sense returned 02 3A 00
2 Storage Device(s) found
Device Tree:
1 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-2 Hub (480 Mb/s, 100mA)
| USB2.0 Hub
|
+-3 Mass Storage (480 Mb/s, 500mA)
USB Storage 000000009909
## Unknown partition table
Partition Map for USB device 1 -- Partition Type: DOS
Partition Start Sector Num Sectors Type
1 2048 524288 c
2 526336 15626240 8e
Interface: USB
Device 1: Vendor: Generic Rev: 9909 Prod: STORAGE DEVICE
Type: Removable Hard Disk
Capacity: 7887.0 MB = 7.7 GB (16152576 x 512)
Partition 1: Filesystem: FAT16 "uboot "
436 readme.txt
71 boot.scr
3244464 uimage-3.3.6-3.fc17.armv5tel.kirkwood
9808824 uinitrd-3.3.6-3.fc17.armv5tel.kirkwood
3292112 uimage-kirkwood
12165177 uinitrd-kirkwood
93 klist.txt
3291896 uimage-3.4.2-3.fc17.armv5tel.kirkwood
12142387 uinitrd-3.4.2-3.fc17.armv5tel.kirkwood
3292112 uimage-3.4.3-1.fc17.armv5tel.kirkwood
12165177 uinitrd-3.4.3-1.fc17.armv5tel.kirkwood
13 file(s), 0 dir(s)
reading uImage-kirkwood
3292112 bytes read
reading uInitrd-kirkwood
12165177 bytes read
## Booting kernel from Legacy Image at 00800000 ...
Image Name: 3.4.3-1.fc17.armv5tel.kirkwood
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3292048 Bytes = 3.1 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 01100000 ...
Image Name: initramfs
Image Type: ARM Linux RAMDisk Image (uncompressed)
Data Size: 12165113 Bytes = 11.6 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Booting Linux on physical CPU 0
...
