OLPC Firmware q7c02

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Contents

Summary

Works on XO-4 B1 and later only.

Breaks compatibility with all previous kernels, do not use without clear instructions. A known working kernel can be found here.

  • reduce display noise during diagonal gradient display test,
  • refine dual core kernel support.
Download q7c02.rom
Build date time 2015-01-08 22:16:15 (UTC)
Source revision 3761
EC version EC 0.5.01
CForth version 1c6dcd2
WLAN 8686 version 9.0.7.p2
WLAN 8787 version 14.66.09.p80

Changes

Open Firmware

  • 3760 OLPC XO-4 - dcon-setup, order of register writes found to be important, on affected units in factory. See also r3758. ticket #12852.
  • 3759 OLPC XO-4 - mmp3-gic, remove IRQ changes to three I2C devices, matching commit 917d648bb by Darshan Prajapati. ticket #12297.
  • 3758 OLPC XO-4 - dcon-setup, lower drive strength for DETTL clock and data signals. ticket #12852.
  • 3757 OLPC XO-4 - trim enable-smp based on kernel patch f37e149 on arm-3.5-volansys branch by Darshan Prajapati; remove early initialisation instructions from spin, remove storage LED GPIO set, and don't enable all peripheral clocks. ticket #12297.

CForth

  • none.

EC

  • none

Touchscreen

  • none.
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