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−{{Infobox homebrew+| title = MINI
−| type = system tool
−| author = [[Team Twiizers]]
−| source = https://github.com/fail0verflow/mini
−}}
−'''MINI''' Is Not [[IOS]] -- but it is a limited replacement that can fulfill many low-level tasks that IOS might interfere with.
−The name is an allusion to GNU, which stands for "GNU's Not Unix"
−
−It was developed alongside [[BootMii]] as a replaceable [[Starlet]] executable, however, it was made mostly redundant by the [[Homebrew Channel]] and AHBPROT. There are still a few features that cannot be achieved that way, such as arbitrary ARM execution without exploits or NAND modification.
−
−Code from MINI was later re-used for [https://github.com/AsahiLinux/m1n1 m1n1] as part of a project to boot Linux on the [https://en.wikipedia.org/wiki/Apple_M1 Apple M1].
−
−== Homebrew using MINI ==
−* [[CEIL1NG_CAT]]
−* [[HackMii Installer]]
−* [[Wii-Linux]]
−* [https://github.com/lewurm/ppcskel ppcskel], basic example code that runs alongside MINI
−
−== Features ==
−* Light-weight -- binary is approximately 50kbytes, 11,673 lines of code as of first release
−* Mostly IRQ driven :)
−* Supports debug output over the GPIO pins and [[USBGecko]]
−* Supports loading both ARM and PPC-side binaries over USBGecko (ala [[Wiiload]])
−* Allows any memory address to be peeked or poked from the PPC (via IPC)
−* Contains drivers for the following hardware:
−** OTP, SEEPROM
−** [[Hardware/AES Engine|AES Engine]]
−** SDHC (at the sector level, or can load a file from a FAT FS on SD)
−** [[NAND]] (read/write at the physical level)
−** PowerPC (can read a PPC ELF file from SD into memory, and kickstart execution on the PPC)
−* Not dependent on IOS in any way -- as long as you can run it, it can do whatever it wants, regardless of what security features Nintendo patches into newer versions of [[IOS]].
−
−== Limitations ==
−* No real kernel architecture; no threading model, but most calls are asynchronous
−* No USB support (including Bluetooth for Wiimotes)
−* No WiFi support
−* No NAND FS support
−* No audio/visual capability (hardware limitation)
−
−All registers are exposed over IPC, so some or all of the missing driver functionality could conceivably be implemented on the PPC side.
−Note that this cannot execute at the same time as IOS; you can only have one or the other executing at any point in time. Switching back and forth between the two is left as an exercise for the developer.
−
−Since the discovery of the AHBPROT register, MINI enables direct PPC access to all devices. It is often used together with [[Wii Linux]] to enable full hardware functionality and performance.
−
−== IPC documentation ==
−IPC messages take the following format:
− struct {
− u32 code;
− u32 tag;
− u32 args[6];
− }
−
−{| class="wikitable"
−! Command
−! Description
−|-
−| IPC_SYS_PING
−| Simply pings the [[Starlet]] for testing.
−|-
−| IPC_SYS_JUMP
−| Shuts down MINI and jumps to the code passed.
−|-
−| IPC_SYS_GETVERS
−| Fetches the MINI version.
−|-
−| IPC_SYS_GETGITS
−| Fetches MINI's Git version.
−|-
−| IPC_NAND_RESET
−| Disables and re-enables the [[Hardware/NAND Interface|NAND Interface]].
−|-
−| IPC_NAND_GETID
−| Retrieves the [[Hardware/NAND|NAND]]'s physical ID.
−|-
−| IPC_NAND_STATUS
−| Sends the GETSTATUS command to the NAND.
−|-
−| IPC_NAND_READ
−| Reads a raw page from the NAND.
−|-
−| IPC_NAND_WRITE
−| Writes a raw page to the NAND.
−|-
−| IPC_NAND_ERASE
−| Erases a block on the NAND.
−|-
−| IPC_NAND_SETMINPAGE
−| Changes the lowest writable page enforced by MINI to prevent accidental bricking.
−|-
−| IPC_NAND_GETMINPAGE
−| Fetches the lowest writable page enforced by MINI.
−|-
−| IPC_SDHC_DISCOVER
−| Initializes the SDHC handler.
−|-
−| IPC_SDHC_EXIT
−| Shuts off the SDHC handler.
−|-
−| IPC_SDMMC_ACK
−| Clears the "new SD card" flag, resulting in [[#IPC_SDMMC_STATE|IPC_SDMMC_STATE]] returning SDMMC_INSERTED instead of SDMMC_NEW_CARD.
−|-
−| IPC_SDMMC_READ
−| Reads raw data from the front SD card.
−|-
−| IPC_SDMMC_WRITE
−| Writes raw data to the front SD.
−|-
−| IPC_SDMMC_STATE
−| Returns whether there is no SD card (SDMMC_NO_CARD), a card inserted since the last [[#IPC_SDMMC_ACK|IPC_SDMMC_ACK]] (SDMMC_NEW_CARD), or a card inserted before the last IPC_SDMMC_ACK (SDMMC_INSERTED).
−|-
−| IPC_SDMMC_SIZE
−| Returns the number of sectors in the front SD.
−|-
−| IPC_KEYS_GETOTP
−| Returns the cached [[Hardware/OTP|OTP]] keys.
−|-
−| IPC_KEYS_GETEEP
−| Returns the cached [[Hardware/SEEPROM|SEEPROM]] keys.
−|-
−| IPC_AES_RESET
−| Sends a reset signal to the [[Hardware/AES Engine|AES engine]].
−|-
−| IPC_AES_SETIV
−| Sends the contents to be AES-decrypted to the AES engine.
−|-
−| IPC_AES_SETKEY
−| Sets the AES key used for decryption.
−|-
−| IPC_AES_DECRYPT
−| Decrypts the contents in the AES engine.
−|-
−| IPC_BOOT2_RUN
−| Shuts down MINI and launches [[boot2]].
−|-
−| IPC_BOOT2_TMD
−| Fetches the [[TMD]] of boot2.
−|-
−| IPC_PPC_BOOT
−| Reboots the [[Hardware/Broadway|Broadway]] to a location in memory.
−|-
−| IPC_PPC_BOOT_FILE
−| Similar to [[#IPC_PPC_BOOT|IPC_PPC_BOOT]], but boots a file. <!--TODO: SD or NAND? -->
−|}
−
−== Changelog ==
−
−=== v1.4 ===
−* Fixed integer overflow when calculating SD card free space
−
−=== Beta 5 (v1.2) ===
−*Compatible with more SD cards.
−
−=== Beta 3 (v1.0) ===
−* Improved the SD card compatibility
−* Enable HW_AHBPROT to fix RESET issue with [[CEIL1NG_CAT]]
−
−=== Beta 2 (v0.9) ===
−* SD card performance has been improved, decreasing the boot and the NAND backup / restore time
−* backupmii accepts fragmented SD cards now, reformatting is not performed anymore. Old NAND dumps are still compatible.
−* [[boot2]] patcher now works with [[boot2v4]]
−
−=== Beta 1 ===
−* First Public Release
−
−{{Navbox IOS|skipCat=true}}
−[[Category:IOS]]
−{{Navbox fail0verflow}}
BOOTMIX
−