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Message
From: Richard Herveille<richard@a...>
Date: Thu Dec 11 09:36:35 CET 2003
Subject: [openrisc] Open PDA
>
> If anyone knows about how to make a core that reads EXT2 partitions
and
> can search for and load a specific file (the FPGA image), please let
me
> know.
The easiest way is to fix this image to a specific space on the
harddisk. Preferably the very first byte on the disk. Reading it from
there isn't that hard, as all parameters are fixed. You will use LBA
encoding, which is much simpler than CHS. Use a statemachine to program
the harddisk and read the data (PIO mode). Note that a single sector on
a harddisk is fixed as 512bytes.
The OS data would start at the next sector. Your OS, or the harddisk
controller, should take into account that the first sector is not
useable.
You guys should also take a look at the dragonix project. That might be
a good starting point: http://dragonix.openhardware.net
It's a Motorola Dragonball based PDA like device. The FPGA is loaded
with OpenCores IPs. OS is uClinux 2.4.
Richard
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