stephen pearce wrote:
Hi
1/
Could someone tell me or direct me to a description of howto update the
olpc development board bios from Insy... to linuxbios?
It's pretty complicated at present.
First you need to install Fedora on the development board.
http://wiki.laptop.org/go/Installing_Fedora_Core
That's not trivial. In order to do it, you need a lot of USB devices -
hub, keyboard, mouse, memory stick, network adapter, and hard drive. I
know from experience that some USB network adapters don't work. You
also need a network server and the know-how to set it up to deliver the
Fedora installation set.
To build LinuxBIOS, follow these instructions:
http://wiki.laptop.org/go/LinuxBIOSHowto
To install LinuxBIOS, boot Fedora on the devel board and do this:
http://wiki.laptop.org/go/Flashing_LinuxBIOS
2/
What is the part number/ description for the socketed flash rom which
goes into the development board so I can obtain one
SST 49LF008A . It's a 1 MByte (8 Mbit) part that implements the LPC
(Low Pin Count) interface (also known as FWH - Firmware Hub - although,
strictly speaking, there are some small differences between the LPC and
FWH protocols).
3/
Can the red hat image be writen to usb flash rom and then used to boot
the development board ..
The Fedora installation procedure described above wants to install to a
USB hard disk. I don't know if a USB flash device would be big enough.
if so apart from copying the image .. dd to a
usb flash drive what else is necessary to make a bootable image ..
also is the source available for this so one could produce a reduced
image by removing some of the code
I have got puppylinux to boot on a 512 MB Cosair memory stick .. I
tried a number of other memory sticks unsuccessfully suggesting some
incompatibility amongst the usb interfaces on these sticks .. (same
problems on a non olpc pc .. so I don't think it is an aberation of
the olpc platfom
I had good luck with two different SanDisk Cruzer-Mini 1.0 GB sticks.
But I had to put them in the USB sockets on the left side of the board.
The Insyde BIOS wouldn't recognize the stick when it was in the
right-side socket.
The Insyde BIOS is known to be unreliable with respect to USB operations
on the OLPC devel board. (It was a quick port that was done on a
donated-time basis.)
I got PuppyLinux 2.02 to boot from the Cruzer-mini. But I had to use a
Mac USB keyboard; my Belkin USB keyboard wouldn't work.
I was unable to use PuppyLinux to reflash the SST FLASH part, because
the procedure requires you to set the MSR register to a specific value.
PuppyLinux lacks the special file "/dev/cpu/0/msr", so the "wrmsr"
program won't work.
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