This is a drop-in replacement for the Acekard+ system menu that will boot directly to /boot.nds on the SD card.
- Copy
akmenu2_fat.ndsto the root of your SD card - Copy your homebrew of choice to the root of your SD card and rename to
boot.nds - Boot and enjoy
The Acekard+ bootloader will only load the ARM9 binary of akmenu2_fat.nds. This means that the ARM9 in that file is responsible for loading the remaining ARM7 binary.
This works by using Acekard's custom IPC implementation. It is a full-duplex IPC system; IPC_ARM9 at 0x02FFF200 is for the ARM9's message to ARM7, while IPC_ARM7 at 0x02FFF20C is the other way around.
When the ARM7 receives 1 from the ARM9, it performs a BIOS-provided soft reset. That soft reset, among other things, will execute the address in the ROM header, which is located at 0x02FFFE00.
Thus, what this abomination does, is embed nds-miniboot's ARM7 and ARM9 binaries directly (so that the bootloader will load both at once), repoint the header's ARM7 addresses to the embedded nds-miniboot ARM7, instruct the existing ARM7 to reset, then jump straight to the embedded nds-miniboot ARM9.
- BlocksDS for the toolchain used in this project
- asiekierka for nds-miniboot, as well as linkerscripts from that repository that was shamelessly stolen
This application is provided under the terms of the Zlib license. See LICENSE.txt for details.
Additionally nds-miniboot, provided with the application, is subject to a number of licenses; see nds-miniboot/LICENSE for details.