Boot from USB with separate /boot /root partitions

[alasrati]

Hello.

I have a Dockstar on which I want to run Arch and I want my root filesystem to be ext3. The dockstar can't boot from ext3 so I need to have a separate /boot partition formatted with ext2. However, I cannot make this work.

I have a USB HDD formatted with 4 partitions:

ext2 /boot
swap
ext3 /
ext3 /home

I have taken the dumb approach of untarring ArchLinuxARM-armv5te-latest.tar.gz
to the / partition then copying the /boot dir to the /boot partition. I have an attached serial cable so can debug.

U-Boot loads the uImage from the first partition, a kernel loads but init fails and it kernel panics. I assume I need to change some of the boot parameters but I am unsure how to go about doing this and would really appreciate it if someone can set me on the right track.

Boot sequence:

$this->bbcode_second_pass_code('', 'U-Boot 2010.06-00695-gbd23130-dirty (Aug 30 2010 - 23:04:56)
Marvell-Dockstar/Pogoplug by Jeff Doozan

SoC: Kirkwood 88F6281_A0
DRAM: 128 MiB
NAND: 256 MiB
In: serial
Out: serial
Err: serial
Net: egiga0
88E1116 Initialized on egiga0
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... 1 Storage Device(s) found
Loading file "/rescueme" from usb device 0:1 (usbda1)
** File not found /rescueme
reading /rescueme.txt

** Unable to read "/rescueme.txt" from usb 0:1 **
Creating 1 MTD partitions on "nand0":
0x000002500000-0x000010000000 : "mtd=3"
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size: 131072 bytes (128 KiB)
UBI: logical eraseblock size: 129024 bytes
UBI: smallest flash I/O unit: 2048
UBI: sub-page size: 512
UBI: VID header offset: 512 (aligned 512)
UBI: data offset: 2048
UBI: fixable bit-flip detected at PEB 224
UBI: fixable bit-flip detected at PEB 225
UBI: fixable bit-flip detected at PEB 226
UBI: fixable bit-flip detected at PEB 227
UBI error: ubi_read_volume_table: the layout volume was not found
UBI error: ubi_init: cannot attach mtd1
UBI error: ubi_init: UBI error: cannot initialize UBI, error -22
UBI init error -22
Loading file "/boot/uImage" from usb device 0:1 (usbda1)
1 bytes read
Found bootable drive on usb 0:1
Loading file "/boot/uImage" from usb device 0:1 (usbda1)
2821160 bytes read
Loading file "/boot/uInitrd" from usb device 0:1 (usbda1)
** File not found /boot/uInitrd
## Booting kernel from Legacy Image at 00800000 ...
Image Name: Linux-3.1.4-1-ARCH
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2821096 Bytes = 2.7 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[ 5.276317] rtc-mv rtc-mv: internal RTC not ticking
[ 5.286769] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 15.299684] Kernel panic - not syncing: No init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[ 15.312242] [<c000d264>] (unwind_backtrace+0x0/0xe0) from [<c03c463c>] (panic+0x58/0x194)
[ 15.320517] [<c03c463c>] (panic+0x58/0x194) from [<c03c434c>] (init_post+0xa0/0xc4)
[ 15.328235] [<c03c434c>] (init_post+0xa0/0xc4) from [<c0529860>] (kernel_init+0xec/0x114)

')

UBoot config:

$this->bbcode_second_pass_code('', 'Marvell>> printenv
ethact=egiga0
bootdelay=3
baudrate=115200
arcNumber=2097
mainlineLinux=yes
console=ttyS0,115200
led_init=green blinking
led_exit=green off
led_error=orange blinking
mtdparts=mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)
mtdids=nand0=orion_nand
partition=nand0,2
rescue_installed=0
rescue_set_bootargs=setenv bootargs console=$console ubi.mtd=2 root=ubi0:rootfs ro rootfstype=ubifs $mtdparts $rescue_custom_params
rescue_bootcmd=if test $rescue_installed -eq 1; then run rescue_set_bootargs; nand read.e 0x800000 0x100000 0x400000; bootm 0x800000; else run pogo_bootcmd; fi
pogo_bootcmd=if fsload uboot-original-mtd0.kwb; then go 0x800200; fi
force_rescue=0
force_rescue_bootcmd=if test $force_rescue -eq 1 || ext2load usb 0:1 0x1700000 /rescueme 1 || fatload usb 0:1 0x1700000 /rescueme.txt 1; then run rescue_bootcmd; fi
ubifs_mtd=3
ubifs_set_bootargs=setenv bootargs console=$console ubi.mtd=$ubifs_mtd root=ubi0:rootfs rootfstype=ubifs $mtdparts $ubifs_custom_params
ubifs_bootcmd=run ubifs_set_bootargs; if ubi part data && ubifsmount rootfs && ubifsload 0x800000 /boot/uImage && ubifsload 0x1100000 /boot/uInitrd; then bootm 0x800000 0x1100000; fi
usb_scan=usb_scan_done=0;for scan in $usb_scan_list; do run usb_scan_$scan; if test $usb_scan_done -eq 0 && ext2load usb $usb 0x800000 /boot/uImage 1; then usb_scan_done=1; echo "Found bootable drive on usb $usb"; setenv usb_device $usb; setenv usb_root /dev/$dev; fi; done
usb_scan_list=1 2 3 4
usb_scan_1=usb=0:1 dev=sda1
usb_scan_2=usb=1:1 dev=sdb1
usb_scan_3=usb=2:1 dev=sdc1
usb_scan_4=usb=3:1 dev=sdd1
usb_init=run usb_scan
usb_device=0:1
usb_rootfstype=ext2
usb_rootdelay=10
usb_set_bootargs=setenv bootargs console=$console root=$usb_root rootdelay=$usb_rootdelay rootfstype=$usb_rootfstype $mtdparts $usb_custom_params
usb_bootcmd=run usb_init; run usb_set_bootargs; run usb_boot
usb_boot=mw 0x800000 0 1; ext2load usb $usb_device 0x800000 /boot/uImage; if ext2load usb $usb_device 0x1100000 /boot/uInitrd; then bootm 0x800000 0x1100000; else bootm 0x800000; fi
bootcmd=usb start; run force_rescue_bootcmd; run ubifs_bootcmd; run usb_bootcmd; usb stop; run rescue_bootcmd; run pogo_bootcmd; reset
ethaddr=00:10:75:1A:C8:AB
stdin=serial
stdout=serial
stderr=serial
usb_root=/dev/sda1')

Many thanks for any help anyone can provide

[hydro]

$this->bbcode_second_pass_quote('alasrati', 'I') assume I need to change some of the boot parameters

[alasrati]

Joy! It works.

Many thanks.

PS Perhaps that guide could be linked to from this page? http://archlinuxarm.org/platforms/armv5 ... e-dockstar
under "Install FAQ => Can I use ext3/4?"