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FindDevicesWithUnsignedBootloaedrs » History » Version 18

Denis 'GNUtoo' Carikli, 03/28/2020 11:54 PM

1 1 Denis 'GNUtoo' Carikli
h1. FindDevicesWithUnsignedBootloaedrs
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Given the huge number of devices out there, buying each device and checking it doesn't scale. Especially as there are multiple variants and even multiple versions of the variants.
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For instance for the Galaxy SII we have the GT-I9100 that has an Exynos4 and GT-I9100G that has an OMAP4. And for the GT-I9100G, there are multiple versions.
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h2. Making it easy for people to check the devices they have
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The first step would be to document what tools already exist to do that and the ones that are lacking.
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See [[BootloadersFreedom#Tools]] for more details.
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Notes:
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* Even with fuseegelee we might want to know if the device has restricted boot or not. See the [[BootloadersFreedom]] for more details about the limitations of fuseegelee and how to potentailly bypass them.
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* sunxi-tools: does "if sunxi => unsigned?" still stand now that there are fuses drivers? If so still mention the tool as it could detect the SOC which would then tell us that it's most probably unsigned.
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* No tools (beside devmem2 and a good datasheet) to analyze boot settings and dump registers at runtime?
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h2. Checking images at large scale
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The idea would be to find a way to get a very large number of stock images for Android devices make tests on the images and automatically check if the bootloaders are signed.
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If the bootloaders are under a free software license and are unsigned, once we get and identify the corresponding source code we could publish them.
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For the signed bootloaders under a free software license we'd better check with the FSF what is best to do as we need not to redistribute any software that is practically nonfree.
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Constraints:
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* Check with FSF lawyers how to do it legally