#linux-sunxi on 2025-05-17 — irc logs at oftc.catirclogs.org

2024-07-16 04:52 ChanServ changed the topic of #linux-sunxi to: Allwinner/sunxi development - Did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait for an answer! - This channel is logged at https://oftc.irclog.whitequark.org/linux-sunxi

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00:52 <iscle> After checking the DRAM init code for A733, I think it's much more complex than what we had for previous SoCs, probably because of DDR5

00:53 <iscle> If anyone wants to access my ghidra server with the binary already loaded, let me know and I'll send you the instructions :)

00:57 <iscle> It shares some code with sun50iw5p1, which luckily we have an static lib with symbols here: https://github.com/DongshanPI/100ASK_T113s3-SdNand_TinaSDK5/tree/master/brandy/brandy-2.0/spl-pub/board/aw1750

00:58 <iscle> Some functions like dwc_ddrphy_phyinit_G_execFW appear to be shared with other devices with ddr4 ram

01:05 <iscle> It's based on a dwc core, and looking around on github this one came up: https://github.com/AspeedTech-BMC/u-boot/blob/aspeed-master-v2023.10/drivers/ram/aspeed/dwc_ddrphy_phyinit_ddr5-3200-nodimm-train2D.c

01:05 <iscle> since ddr5 is so new, I doubt there are many variations of the dwc core for it, so it might be interesting to investigate

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06:39 <hexdump0815> iscle: any hints or pointers about how you rooted it? it might be useful for others here too wanting to work on those devices and i guess it would work in a similar way for the a523 devices too maybe?

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09:53 <iscle> hexdump0815: I just unlocked the bootloader, then downloaded the firmware package from the manufacturer's site, extracted the boot.img, patched it with magisk and flashed it via fastboot

09:53 <iscle> The typical stuff. The hardest thing was to extract the Allwinner's Firmware.img, but there are a couple of tools in github that do that

09:53 <iscle> (not very user friendly, all being said)

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11:40 <hexdump0815> iscle: thanks a lot for this info - that gives a good idea about the procedure

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