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08:34.56 | zub | Hi. |
08:35.09 | zub | I'm trying to boot orniary linux on an android device. |
08:35.31 | zub | It's easy to build CWM recovery and some kernel for the device, so it sounds easy to run something else on it. |
08:36.14 | zub | I thought I'd just create a dummy "helloworld" initramfs - just print helloworld on the console... so that I could experiment with kernels and see it they start usespace and I get frambuffer+console on it working. |
08:36.46 | zub | So I built a static binary, a "fake init". |
08:38.01 | zub | But when I start that, I see the backlight goes off after the kernel boiots - and before or just around the time the init is run |
08:38.36 | zub | hm, maybe I should go with a more useful initramfs, but I probably won't get much running. Hm. |
08:39.09 | zub | I'm not sure how different android kernel is from vanilla linux, but probably similar enough to get e.g. debian initramfs going (?) |
08:40.05 | zub | anyway, I located the /sys node to control the backlight. Make my fake init mount sys and write a number there. - This approach works from withint he CWM (tested the inti there - run from shell) |
08:40.35 | zub | but that doesn't seem to make a difference when I run the fake-init image |
08:41.25 | zub | so, the question is - any ideas where to look for the backlight control? it's very target specific for sure, but maybe there are some "common things" to look into (?) |
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