Difference between revisions of "Hardware/Starlet"
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* Authentication (RSA, EC, SHA1, HMAC-SHA1) and encryption/decryption (AES, RSA, EC) | * Authentication (RSA, EC, SHA1, HMAC-SHA1) and encryption/decryption (AES, RSA, EC) | ||
* USB HCD (generic USB interface), Keyboard driver, Ethernet driver | * USB HCD (generic USB interface), Keyboard driver, Ethernet driver | ||
| − | * WiFi | + | * WiFi (both for networking and communication with Nintendo DS devices) |
| − | * TCP/IP | + | * TCP/IP and UDP |
* SD card | * SD card | ||
* GPIO (Sensor bar, drive LED, power LED, etc) | * GPIO (Sensor bar, drive LED, power LED, etc) | ||
| Line 28: | Line 28: | ||
Starlet is the first processor to run code in the Wii. | Starlet is the first processor to run code in the Wii. | ||
| − | * Starlet boots from an internal Mask ROM, BOOT0 | + | * Starlet boots from an internal Mask ROM, BOOT0 (about 1300 bytes of code out of 4K possible) |
| − | * BOOT0 decrypts, verifies, and runs the first few blocks of NAND, BOOT1 | + | * BOOT0 decrypts, verifies, and runs the first few blocks of NAND, BOOT1 (up to the first 48 pages of flash) |
* BOOT1 locates, loads, decrypts, verifies, and runs BOOT2 | * BOOT1 locates, loads, decrypts, verifies, and runs BOOT2 | ||
* The BOOT2 bootstrap then loads the embedded ELF file. | * The BOOT2 bootstrap then loads the embedded ELF file. | ||
Revision as of 04:09, 1 June 2008
The Hollywood includes an ARM9 core, nicknamed the Starlet. This is a very interesting piece of hardware, as it basically does everything that makes a Wii different from a Gamecube.
Note: this page is incomplete. Please expand it as you see fit!
Hardware
- arm926 core.
- AES and SHA-1 hardware engines
- Boot ROM
- OTP key/hash area
Tasks
The Starlet handles at least these tasks in the Wii
- NAND access / filesystem
- DVD subsystem
- Authentication (RSA, EC, SHA1, HMAC-SHA1) and encryption/decryption (AES, RSA, EC)
- USB HCD (generic USB interface), Keyboard driver, Ethernet driver
- WiFi (both for networking and communication with Nintendo DS devices)
- TCP/IP and UDP
- SD card
- GPIO (Sensor bar, drive LED, power LED, etc)
- Audio/Video encoder (I2C) bus
Boot
Starlet is the first processor to run code in the Wii.
- Starlet boots from an internal Mask ROM, BOOT0 (about 1300 bytes of code out of 4K possible)
- BOOT0 decrypts, verifies, and runs the first few blocks of NAND, BOOT1 (up to the first 48 pages of flash)
- BOOT1 locates, loads, decrypts, verifies, and runs BOOT2
- The BOOT2 bootstrap then loads the embedded ELF file.
- BOOT2 starts the IOS.
At some point, Starlet loads code into an EXI buffer and bootstraps Broadway.
Links
More information about the Starlet:
- IOS - the OS that runs on the Starlet and handles calls from the Broadway during game execution and while in the system menu.
- ARM Binaries - the formats used for Starlet executable code
- WAD Files are used for BOOT2 and the IOS