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117 lines
5.2 KiB
Plaintext
117 lines
5.2 KiB
Plaintext
Hymod Board Database
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(C) Copyright 2001
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Murray Jensen <Murray.Jensen@csiro.au>
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CSIRO Manufacturing Science and Technology, Preston Lab
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25-Jun-01
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This stuff is a set of PHP/MySQL scripts to implement a custom board
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database. It will need *extensive* hacking to modify it to keep the
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information about your custom boards that you want, however it is a good
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starting point.
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How it is used:
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1. a board has gone through all the hardware testing etc and is
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ready to have the flash programmed for the first time - first you
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go to a web page and fill in information about the board in a form
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to register it in a database
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2. the web stuff allocates a (unique) serial number and (optionally)
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a (locally administered) ethernet address and stores the information
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in a database using the serial number as the key (can do whole
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batches of boards in one go and/or use a previously registered board
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as defaults for the new board(s))
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3. it then creates a file in the tftp area of a server somewhere
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containing the board information in a simple text format (one
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per serial number)
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4. all hymod boards have an i2c eeprom, and when U-Boot sees that
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the eeprom is unitialised, it prompts for a serial number and
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ethernet address (if not set), then transfers the file created
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in step 3 from the server and initialises the eeprom from its
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contents
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What this means is you can't boot the board until you have allocated a serial
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number, but you don't have to type it all twice - you do it once on the web
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and the board then finds the info it needs to initialise its eeprom. The
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other side of the coin is the reading of the eeprom and how it gets passed
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to Linux (or another O/S).
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To see how this is all done for the hymod boards look at the code in the
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"board/hymod" directory and in the file "include/asm/hymod.h". Hymod boards
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can have a mezzanine card which also have an eeprom that needs allocating,
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the same process is used for these as well - just a different i2c address.
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Other forms provide the following functions:
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- browsing the board database
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- editing board information (one at a time)
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- maintaining/browsing a (simple) per board event log
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You will need: MySQL (I use version 3.23.7-alpha), PHP4 (with MySQL
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support enabled) and a web server (I use Apache 1.3.x).
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I originally started by using phpMyBuilder (http://kyber.dk/phpMyBuilder)
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but it soon got far more complicated than that could handle (but I left
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the copyright messages in there anyway). Most of the code resides in the
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common defs.php file, which shouldn't need much alteration - all the work
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will be in shaping the front-end php files to your liking.
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Here's a quick summary of what needs doing to use it for your boards:
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1. get phpMyAdmin (http://phpwizard.net/projects/phpMyAdmin/) - it's an
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invaluable tool for this sort of stuff (this step is optional of course)
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2. edit "bddb.css" to your taste, if you could be bothered - I have no
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idea what is in there or what it does - I copied it from somewhere else
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("user.css" from the phpMyEdit (http://phpmyedit.sourcerforge.net) package,
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I think) - I figure one day I'll see what sort of things I can change
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in there.
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3. create a mysql database - call it whatever you like
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4. edit "create_tables.sql" and modify the "boards" table schema to
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reflect the information you want to keep about your boards. It may or
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may not be easier to do this and the next step in phpMyAdmin. Check out
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the MySQL documentation at http://www.mysql.com/doc/ in particular the
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column types at http://www.mysql.com/doc/C/o/Column_types.html - Note
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there is only support for a few data types:
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int - presented as an html text input
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char/text - presented as an html text input
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date - presented as an html text input
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enum - presented as an html radio input
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I also have what I call "enum_multi" which is a set of enums with the
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same name, but suffixed with a number e.g. fred0, fred1, fred2. These
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are presented as a number of html select's with a single label "fred"
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this is useful for board characteristics that have multiple items of
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the same type e.g. multiple banks of sdram.
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5. use the "create_tables.sql" file to create the "boards" table in the
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database e.g. mysql dbname < create_tables.sql
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6. create a user and password for the web server to log into the MySQL
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database with; give this user select, insert and update privileges
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to the database created in 3 (and delete, if you want the "delete"
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functions in the edit forms to work- I have this turned off). phpMyAdmin
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helps in this step.
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7. edit "config.php" and set the variables: $mysql_user, $mysql_pw, $mysql_db,
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$bddb_cfgdir and $bddb_label - keep the contents of this file secret - it
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contains the web servers username and password (the three $mysql_* vars
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are set from the previous step)
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8. edit "defs.php" and a. adjust the various enum value arrays and b. edit
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the function "pg_foot()" to remove my email address :-)
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9. do major hacking on the following files: browse.php, doedit.php, donew.php,
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edit.php and new.php to reflect your database schema - fortunately the
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hacking is fairly straight-forward, but it is boring and time-consuming.
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These notes were written rather hastily - if you find any obvious problems
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please let me know.
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