narmstrong changed the topic of #linux-amlogic to: Amlogic mainline kernel development discussion - our wiki http://linux-meson.com/ - ml linux-amlogic@lists.infradead.org - official channel moved from Freenode - publicly logged on https://libera.irclog.whitequark.org/linux-amlogic
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<GXL_BL2> i spend some time trying to understand how BL2 loads BL3x. I did some analysis with IDA as well as checked https://scm.dersco.re/amlogic/reversing-gxbb-bl2.git/
<GXL_BL2> my understanding is that, typically bl3x are encrypted with aes256 by aml_encrypt_gxl tool (flag --bl3enc) and merged with bl2 and becomes bootloader.img
<GXL_BL2> but when I check bl2'
<GXL_BL2> bl2's src, theres bl2_load_images, and aml_data_check, which checks integrity of it, but i cant find anywhere it decrypts aes.
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<f_> GXL_BL2 what bl2 src?
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<GXL_BL2> @f_ im working on GXL, so i referencex GXL/bl2.c
<GXL_BL2> Anyway, i found my problem. it was key ladder. managed to extract aes256,iv for fip, but now i need another key for bl3x hahahaha