OLPC Firmware Q2B20

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OLPC Firmware B2 Pre-production Release Q2B20 - 2007-01-12

This is the firmware for the pre-production test build of the B2 boards.

File:Olpc-Q2B20.rom

MD5: 74ad97ed495d7975c6bb85272c33a207 olpc-Q2B20.rom

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Changes since Q2B18

• OFW: Update to r90
• OFW: B2 DCon timing fix
• OFW: Device tree reports revision correctly
• OFW: Performance improvements for NAND driver.
• OFW: Support for version 2 DCON chips.
• OFW: Added kbd-led-on/off

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Installation Caveats

• If you have a B1 system:

1. Perform the auto-reinstall procedure at http://wiki.laptop.org/go/Autoreinstallation_image before upgrading to this firmware version
2. DO NOT use olpcflash to write new firmware images. Doing so will erase the manufacturing data that was added at the factory.

• After you reflash, you must power cycle by physically removing power from the system. A warm-start or button-induced restart is not sufficient. Please remove both the battery pack and wall adapter for 10 seconds.

ATest users only: If you use olpcflash to write this image, you must use the --brick option.
Example: olpcflash --brick -w image.rom
This will update your EC code.

Known issues

• Auto-repeat is slow on some USB keyboards
• NVRAM storage for configuration variables is not yet implemented.
• JFFS2 does not handle ECC
• The boot menu is incomplete
• Directory symlinks have a problem.

ATest -- Infineon RAMs only

This is a special purpose image. Do not use except on A-test boards with Infineon RAMS.

For more info see Upgrading_to_LinuxBIOS#Checking_your_DRAM_type

File:Olpc-Q2B20 CL2.5.rom

MD5: ff2d5a6792fcd6151e1c661c76e36e87 olpc-Q2B20_CL2.5.rom