Thinfirm 1.5
This documents the project to create a thin firmware and libertastf driver for the XO-1.5.
Introduction
The XO-1.5 uses the Marvell 8686 module instead of the 8388 that the XO-1s used. There is thin firmware and a libertastf driver for the Marvell 8388. New firmware and modified libertastf drivers need to be written.
Project plan
Ultimately, we will deliver a thin firmware and a working libertas tf driver to go with it. These will work on XO-1.5. However, it's better to split the larger task into several smaller sub-tasks. These are outlined below (already completed sub-tasks prior to this breakdown are excluded).
| ID | Milestone | Deliverable | Tests | Status |
|---|---|---|---|---|
| 1 | Compile full firmware build | sd8686.bin | Does full firmware load on XO-1.5? | Done |
| 2 | Thin firmware specification | Initial version of specification | Readable version of spec checked in. | Done |
| 3 | wireless-testing kernel on OLPC?
Find out if wireless-testing will work on the OLPC. It's OK if some parts are broken, only concerned about booting with a command-line and full functionality of network and network tools. This will give us the ability to only work with one kernel. SDd 4/19/2010 Found out that the libertastf in the XO-1.5 kernel's working tree is in-sync with wireless-testing. I'll work with this kernel since the XO will work and it's in-sync. Still need to confirm I've got a working self-compiled version on an XO-1.5. SDd 4/20/2010 Changing the plan again->going to pull OLPC patches into a wireless-testing workspace and then work off that. SDd 4/23/2010 Done. Note that commits ac1a474d71d6cbf94bf26889da5768f5f2b0ca2b and 96021f096e5178582af296a2fbb6df7dbd6b695c on April 15th broke libertas_sdio for OLPC. Was able to revert them and got it working. Perhaps I'll fix the problem in time, but it's not in scope of my project. |
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Done |
| 3.5 | Sync libertastf debug changes with current kernel | Patches sent to wireless-testing | libertastf works with debugging turned on | Done -> patches are in wireless-testing |
| 4.1 | libertastf_sdio download and run helper firmware |
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Check that libertas_tf_sdio can load the helper firmware by checking that it is running. | Done |
| 4.2 | libertastf_sdio download and run full firmware |
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Check that libertas_tf_sdio can get through probe and load full firmware. Verify in debugger that firmware
is running. |
Done |
| 4.3 | libertastf_sdio get MAC address |
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Verify that driver can get valid MAC address during setup. | In progress |
| 4.5 | libertastf_sdio with full firmware |
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Check that 802.11 packet makes it to firmware by using break-point in debugger | In progress |
| 5 | Thin firmware |
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| 6 | Monitor interface |
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| 7 | Mesh |
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