sd_boot fail

[aplumafreak500]

SDI ACMD6 isn't implemented, which causes a panic in the emulator when sd_boot runs (possibly other retail IOSes too)

[AndrewPiroli]

Thanks. So far what's implemented now has been working for retail released IOSes and mini/StarStruck but I haven't thoroughly tested all IOS codepaths or anything.

I'll take a look at what is required to implement this command.

[AndrewPiroli]

Looks like it's a set bus width command... we are not implementing the SD bus physical layer so I've just added a stub implementation. I think this is enough to get past but I don't have sd boot to test it, do you mind confirming this works or at least gets farther along in the process? Thanks.

[aplumafreak500]

Tested just now, it stops later on when it DMAs the contents of the card. (SDHC DMA logic error)

It also halts if there's no card inserted (that part is intended behavior).

[AndrewPiroli]

Do you have an sdboot guide? I have an image, please don't link any downloads, just wondering the process to install.

Sounds like there are multiple bugs.

[aplumafreak500]

sd_boot is stored on NAND the same way retail boot2 is. You'll need the WAD for sd_boot itself and an SD card image as well

[AndrewPiroli]

I'm remembering now, SD Boot doesn't work with SDHC cards does it? Currently the emulator is set up to only emulate an SDHC card, even if the size of the image is < 4GB. I did that for simplicity since several quirks were removed in the later versions of the spec. I meant to go back and clean it up but nothing other than SD boot really requires legacy support so I forgot.

[AndrewPiroli]

I may have the fix for this.

I have SDSC cards working in IOS & mini. I have an SD Boot image applied to my nand and appear to be launching into SD Boot. SD Boot is reading 2 blocks from the SD card and then hanging. I've tried a few different official factory images that supposedly work with SD Boot but I haven't made it through yet. Either I have a bug still or I'm not using the image correctly. I don't have the files for the SD Boot exploit that lets you launch BootMii, still have to look into that. Going to keep working, but it shouldn't be long now.