| OLPC XO Laptops |
| =============== |
| |
| This document explains how to build and run images that run on the OLPC |
| XO laptops. |
| |
| Supported models |
| ---------------- |
| |
| * OLPC XO-1 |
| The original NS Geode based OLPC laptop, uses the x86 architecture. |
| |
| * OLPC XO-7.5 |
| The ARM-based laptop. Needs a recent enough firmware to provide a good |
| enough flattened device tree to the kernel. |
| |
| Configure and build |
| =================== |
| |
| $ make olpc_xo1_defconfig # Configure for XO-1 |
| |
| or: |
| |
| $ make olpc_xo175_defconfig # Configure for XO-1.75 |
| |
| Then: |
| |
| $ make menuconfig # Customize the build configuration |
| $ make # Build |
| |
| Create the bootable media |
| ========================= |
| |
| When the build is finished, the resulting image file will be called |
| "sdcard.img". It can be written directly to a SD-card or and USB flash stick. |
| |
| Please double check that you're using the right device (e.g. with "lsblk" |
| command). Doing the following will DESTROY ALL DATA that's currently on the |
| media. |
| |
| # cat output/images/sdcard.img >/dev/<device> |
| |
| Preparing the machine |
| ===================== |
| |
| Firmware security |
| ----------------- |
| |
| Most OLPC machines were shipped with the security system that disallows |
| booting unsigned software. If this is the case with your machine, in order |
| to run the image you've built on it you'll need to get a developer key and |
| deactivate the security system. |
| |
| The procedure is descriped in the OLPC wiki: |
| http://wiki.laptop.org/go/Activation_and_Developer_Keys |
| |
| Firmware upgrade |
| ---------------- |
| |
| It is always preferrable to use an up to date firmware. The firmware images |
| are available at http://wiki.laptop.org/go/Firmware. For the XO-1.75 laptop |
| to boot the mainline kernel a firmware Q4E00JA or newer is needed. You can |
| get it at http://dev.laptop.org/~quozl/q4e00ja.rom. |
| |
| To update the firmware, place the .rom file on to your bootable media, |
| connect a charged battery pack and a wall adapter, and enter the Open |
| Firmware prompt by pressing ESC during the early boot (needs an unlocked |
| laptop -- see "Firmware security" above). Then use the "flash" command |
| to update the firmware: |
| |
| ok flash ext:\q4e00ja.rom \ Flash the "q4e00ja.rom" from the SD card |
| ok flash u:\q4e00ja.rom \ Flash the "q4e00ja.rom" from USB stick |
| |
| Booting the machine |
| =================== |
| |
| Once your machine is unlocked, it will automatically boot from your media |
| wherever it will detect it attached to the USB bus or the SD card slot. |
