WiiUBrew

Changes

Hardware/eFuse (view source)

Revision as of 23:37, 2 December 2024

1,079 bytes added ,  23:37, 2 December 2024
→‎Contents
Line 1: Line 1:  +
= General =
 +
Both the [[#Hardware/Latte|Latte]] and the [[#Hardware/Espresso|Espresso]] hardware use eFuses for holding an assortment of read-only data, including the console's encryption/decryption keys.
 +
 +
= Latte =
 
{{Infobox MMIO
 
{{Infobox MMIO
 
| partof = [[Hardware/Latte Registers|Latte Registers]]
 
| partof = [[Hardware/Latte Registers|Latte Registers]]
Line 6: Line 10:  
| bits = 32
 
| bits = 32
 
}}
 
}}
−
  −
== General ==
  −
The '''O'''ne '''T'''ime '''P'''rogrammable memory is programmed sometime during the factory process and can never be changed afterwards. The Wii U's OTP is much larger than the Wii's (1KB split across 8 banks of 128 bytes each) and contains an assortment of read-only data, including the console's encryption/decryption keys.
      
== Register List ==
 
== Register List ==
−
{{reglist|Latte GPIOs}}
+
{{reglist|eFuse}}
−
{{rla|0x0d8001ec|32|LT_OTP_COMMAND|OTP command}}
+
{{rla|0x0d8001ec|32|HW_EFUSEADDR|eFuse address}}
−
{{rla|0x0d8001f0|32|LT_OTP_DATA|OTP data}}
+
{{rla|0x0d8001f0|32|HW_EFUSEDATA|eFuse data}}
 +
{{rla|0x0d800510|32|LT_EFUSEPROT|eFuse access control}}
 
|}
 
|}
   −
== General Registers ==
+
== Register Details ==
−
{{reg32 | LT_OTP_COMMAND | addr = 0x0d8001ec | hifields = 2 | lofields = 2 |
+
{{reg32 | HW_EFUSEADDR | addr = 0x0d8001ec | hifields = 2 | lofields = 4 |
 
|1|15|
 
|1|15|
 
|R/W|U|
 
|R/W|U|
 
|RD|||
 
|RD|||
−
|5|11|
+
|5|3|3|5|
−
|U|R/W|
+
|U|R/W|U|R/W|
−
||ADDR|
+
||BANK||ADDR|
 
}}
 
}}
 
{{regdesc
 
{{regdesc
−
|RD|Set to one to execute a read command. If clear, then the data in LT_OTP_DATA is unchanged.
+
|RD|Set to one to execute a read command. If clear, then the data in HW_EFUSEDATA is unchanged.
−
|ADDR|Word address to read. 0x00 to 0x1F (32 4byte words) ORed with the bank's number (0x000 to 0x700).  
+
|BANK|Bank's number (0x0 to 0x7).
 +
|ADDR|Word address to read, 0x00 to 0x1F (32 4byte words).
 
}}
 
}}
−
This register contains the command sent to the OTP. It is unknown whether is register is also used during the factory process to program the OTP.
+
This register contains the address sent to the eFuse driver.
−
----
  −
{{regsimple|LT_OTP_DATA|addr=0x0d8001f0|bits=32|access=R}}
  −
This register contains the output data for the last issued OTP read command. The execution of a read operation via the LT_OTP_COMMAND register immediately changes this register without any delay.
     −
== IOSU ==
  −
The Wii U's IOSU interacts with the OTP by setting it's respective Latte registers. In addition to this, the IOS-CRYPTO process is also able to access the OTP indirectly through syscall 0x22, which takes the OTP word index, a buffer to store the result and the requested size as parameters. The IOS-KERNEL then converts the word index:
  −
int read_otp_internal(int index, void* out_buf, u32 size)
  −
{
  −
  int i_res = disable_interrupts();
  −
 
  −
  if (size != 0)
  −
  {
  −
    int step = 0;
  −
   
  −
    while (step < size)
  −
    {
  −
      int word_addr = index + (step >> 2);
  −
      int word_offset = word_addr & 0x1F;      // Each OTP bank has 0x20 * 4 = 0x80 bytes. Valid word indexes go from 0x00 to 0x1F.
  −
      word_addr = word_addr << 3;
  −
      word_offset = word_offset | 0x80000000;  // Set OTP read flag.
  −
      word_addr = word_addr & 0x700;          // OTP bank goes from 0x000 to 0x700.
  −
      word_addr = word_addr | word_offset;
  −
     
  −
      *(u32*)0x0D8001EC = word_addr;                    // Write to LT_OTPCMD
  −
        u32 temp = *(u32*)0x0D8001EC;                    // Read from LT_OTPCMD (sync?)
  −
     
  −
      *(u32*)(out_buf + step) = *(u32*)0x0D8001F0;      // Copy from LT_OTPDATA
  −
     
  −
      step += 4;
  −
    }
  −
  }
  −
 
  −
  enable_interrupts(i_res);
  −
  return 0;
  −
}
     −
syscall_0x22(index, out_buf, size)
+
{{regsimple|HW_EFUSEDATA|addr=0x0d8001f0|bits=32|access=R}}
−
{
+
This register contains the output data for the last issued eFuse read command. The execution of a read operation via the HW_EFUSEADDR register immediately changes this register without any delay.
−
  // Do some permission checks.
+
 
−
  ...
+
 
−
 
+
{{reg32 | LT_EFUSEPROT | addr = 0x0d800510 | hifields = 1 | lofields = 1 |
−
  // Internal IOS-KERNEL function.
+
|16          |
−
  read_otp_internal(index, out_buf, size);
+
|R/W          |
−
}
+
|            ||
 +
|16          |
 +
|R/W          |
 +
|            |
 +
}}
 +
This register is a bitmask for locking out chunks of eFuses. Each bit clears out 0x20 bytes starting from the bottom (bank 7 is 0xF0000000) to the top (bank 0 is 0x0000000F).
   −
== OTP Contents ==
+
== Contents ==
−
The following things are stored inside the OTP and requested by the IOSU kernel at some point:
+
All data here is written during manufacturing. Items listed as reserved are not known to be used and are either empty or random.
 
{| style="border: 1px solid #bbb; border-collapse: collapse; background-color: #eef; padding: 0.2em 0.2em 0.2em 0.2em;" border="1" cellpadding="2"
 
{| style="border: 1px solid #bbb; border-collapse: collapse; background-color: #eef; padding: 0.2em 0.2em 0.2em 0.2em;" border="1" cellpadding="2"
 
|- style="background-color: #ddd;"
 
|- style="background-color: #ddd;"
Line 84: Line 58:  
! Description
 
! Description
 
|-
 
|-
−
| 0 (Wii bank) || 0x000 (0x00 * 4) || 0x14 bytes || Wii boot1 SHA-1 hash.
+
| 0 || 0x000 (0x00 * 4) || 0x14 bytes || Wii boot1 SHA-1 hash
 +
|-
 +
| 0 || 0x014 (0x05 * 4) || 0x10 bytes || Wii common key
 +
|-
 +
| 0 || 0x024 (0x09 * 4) || 0x04 bytes || Wii device ID
 +
|-
 +
| 0 || 0x028 (0x0A * 4) || 0x1C bytes || Wii device private key
 +
|-
 +
| 0 || 0x044 (0x11 * 4) || 0x14 bytes || Wii NAND HMAC key (overlaps with device private key)
 +
|-
 +
| 0 || 0x058 (0x16 * 4) || 0x10 bytes || Wii NAND key
 +
|-
 +
| 0 || 0x068 (0x1A * 4) || 0x10 bytes || Wii backup key
 +
|-
 +
| 0 || 0x078 (0x1E * 4) || 0x08 bytes || Reserved
 +
|-
 +
| 1 || 0x080 (0x20 * 4) || 0x04 bytes || [[#FuseType|FuseType]]
 +
Production: 0x90000000
 +
Development: 0x88000000
 +
Evaluation: 0x00000000
 +
|-
 +
| 1 || 0x084 (0x21 * 4) || 0x04 bytes || IOStrength configuration flags
 +
Production: 0x00000000
 +
 +
Flag 0x00008000 sets register HW_IOSTRCTRL0.
 +
Flags 0x00000008, 0x00000080, 0x00000800, 0x00002000 set register HW_IOSTRCTRL1.
 +
|-
 +
| 1 || 0x088 (0x22 * 4) || 0x04 bytes || Pulse length for SEEPROM manual CLK
 +
Production: 0x00000000 (defaults to 0xFA in boot0)
 +
|-
 +
| 1 || 0x08C (0x23 * 4) || 0x04 bytes || Signature type?
 +
Production: 0x00010000
 +
Development: 0x00000000
 
|-
 
|-
−
| 0 (Wii bank) || 0x014 (0x05 * 4) || 0x10 bytes || Wii common key.
+
| 1 || 0x090 (0x24 * 4) || 0x10 bytes || Starbuck ancast key
 
|-
 
|-
−
| 0 (Wii bank) || 0x024 (0x09 * 4) || 0x04 bytes || Wii NG ID.
+
| 1 || 0x0A0 (0x28 * 4) || 0x10 bytes || SEEPROM key
 
|-
 
|-
−
| 0 (Wii bank) || 0x028 (0x0A * 4) || 0x1D bytes || Wii NG private key.
+
| 1 || 0x0B0 (0x2C * 4) || 0x10 bytes || Reserved
 
|-
 
|-
−
| 0 (Wii bank) || 0x044 (0x11 * 4) || 0x14 bytes || Wii NAND HMAC (overlaps with NG private key).
+
| 1 || 0x0C0 (0x30 * 4) || 0x10 bytes || Reserved
 
|-
 
|-
−
| 0 (Wii bank) || 0x058 (0x16 * 4) || 0x10 bytes || Wii NAND key.
+
| 1 || 0x0D0 (0x34 * 4) || 0x10 bytes || vWii common key
 
|-
 
|-
−
| 0 (Wii bank) || 0x068 (0x1A * 4) || 0x10 bytes || Wii RNG key.
+
| 1 || 0x0E0 (0x38 * 4) || 0x10 bytes || Wii U common key
 
|-
 
|-
−
| 0 (Wii bank) || 0x078 (0x1E * 4) || 0x08 bytes || Unknown.
+
| 1 || 0x0F0 (0x3C * 4) || 0x10 bytes || Reserved
 
|-
 
|-
−
| 1 (Wii U bank) || 0x080 (0x20 * 4) || 0x04 bytes || Security level flag.
+
| 2 || 0x100 (0x40 * 4) || 0x10 bytes || Reserved
−
Retail: 0x90000000; Debug: 0x08000000; Factory: 0x00000000.
  −
Flag 0x40000000 causes an error in boot0.
  −
Flag 0x00000000 makes boot0 use empty SEEPROM and boot1 keys.
  −
Flag 0x08000000 tells boot0 to use rsa_pub0 (debug).
  −
Flag 0x90000000 or 0x10000000 tells boot0 to use rsa_pub1 (retail).
   
|-
 
|-
−
| 1 (Wii U bank) || 0x084 (0x21 * 4) || 0x04 bytes || Some flag for IOStrength configurations.
+
| 2 || 0x110 (0x44 * 4) || 0x10 bytes || Reserved
−
Flag 0x00008000 sets register 0x0D8001E0.
  −
Flags 0x00000008, 0x00000080, 0x00000800, 0x00002000 set register 0x0D8001E4.
  −
Should be 0x00000000 in retail units.
   
|-
 
|-
−
| 1 (Wii U bank) || 0x088 (0x22 * 4) || 0x04 bytes || Pulse length for SEEPROM manual CLK.
+
| 2 || 0x120 (0x48 * 4) || 0x10 bytes || SSL RSA key encryption key
−
Should be 0x00000000 in retail units (defaults to 0xFA in boot0).
   
|-
 
|-
−
| 1 (Wii U bank) || 0x08C (0x23 * 4) || 0x04 bytes || Unknown (0x00010000).
+
| 2 || 0x130 (0x4C * 4) || 0x10 bytes || IVS key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x090 (0x24 * 4) || 0x10 bytes || Wii U Starbuck ancast key.
+
| 2 || 0x140 (0x50 * 4) || 0x10 bytes || Wii media title key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0A0 (0x28 * 4) || 0x10 bytes || Wii U SEEPROM key.
+
| 2 || 0x150 (0x54 * 4) || 0x10 bytes || XOR key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0B0 (0x2C * 4) || 0x10 bytes || Unknown.
+
| 2 || 0x160 (0x58 * 4) || 0x10 bytes || Wii U backup key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0C0 (0x30 * 4) || 0x10 bytes || Unknown.
+
| 2 || 0x170 (0x5C * 4) || 0x10 bytes || SLC NAND key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0D0 (0x34 * 4) || 0x10 bytes || vWii common key.
+
| 3 || 0x180 (0x60 * 4) || 0x10 bytes || MLC NAND key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0E0 (0x38 * 4) || 0x10 bytes || Wii U common key.
+
| 3 || 0x190 (0x64 * 4) || 0x10 bytes || SHDD key
 
|-
 
|-
−
| 1 (Wii U bank) || 0x0F0 (0x3C * 4) || 0x10 bytes || Unknown.
+
| 3 || 0x1A0 (0x68 * 4) || 0x10 bytes || DRH WLAN data key
 
|-
 
|-
−
| 2 (Wii U bank) || 0x100 (0x40 * 4) || 0x10 bytes || Unknown.
+
| 3 || 0x1B0 (0x6C * 4) || 0x30 bytes || Reserved
 
|-
 
|-
−
| 2 (Wii U bank) || 0x110 (0x44 * 4) || 0x10 bytes || Unknown.
+
| 3 || 0x1E0 (0x78 * 4) || 0x14 bytes || SLC NAND HMAC key
 
|-
 
|-
−
| 2 (Wii U bank) || 0x120 (0x48 * 4) || 0x10 bytes || Key to encrypt/decrypt SSL RSA key.
+
| 3 || 0x1F4 (0x7D * 4) || 0x0C bytes || Reserved
 
|-
 
|-
−
| 2 (Wii U bank) || 0x130 (0x4C * 4) || 0x10 bytes || Key to encrypt/decrypt WagonU key.
+
| 4 || 0x200 (0x80 * 4) || 0x10 bytes || Reserved
 
|-
 
|-
−
| 2 (Wii U bank) || 0x140 (0x50 * 4) || 0x10 bytes || Unknown.
+
| 4 || 0x210 (0x84 * 4) || 0x0C bytes || Reserved
 
|-
 
|-
−
| 2 (Wii U bank) || 0x150 (0x54 * 4) || 0x10 bytes || Wii U XOR key.
+
| 4 || 0x21C (0x87 * 4) || 0x04 bytes || Wii U device ID
 
|-
 
|-
−
| 2 (Wii U bank) || 0x160 (0x58 * 4) || 0x10 bytes || Wii U RNG key.
+
| 4 || 0x220 (0x88 * 4) || 0x20 bytes || Wii U device private key
 +
Only 0x1E bytes are used.
 
|-
 
|-
−
| 2 (Wii U bank) || 0x170 (0x5C * 4) || 0x10 bytes || Wii U NAND key.
+
| 4 || 0x240 (0x90 * 4) || 0x20 bytes || Wii U device unique certificate private key
 +
Only 0x1E bytes are used.
 
|-
 
|-
−
| 3 (Wii U bank) || 0x180 (0x60 * 4) || 0x10 bytes || Wii U devkit fallback key.
+
| 4 || 0x260 (0x98 * 4) || 0x10 bytes || RNG seed
 +
Only the first 0x04 bytes are used.
 
|-
 
|-
−
| 3 (Wii U bank) || 0x190 (0x64 * 4) || 0x10 bytes || Key to decrypt SEEPROM devkit key.
+
| 4 || 0x270 (0x9C * 4) || 0x10 bytes || Reserved
 
|-
 
|-
−
| 3 (Wii U bank) || 0x1A0 (0x68 * 4) || 0x10 bytes || Key to encrypt DRH WLAN data.
+
| 5 || 0x280 (0xA0 * 4) || 0x04 bytes || Wii U device unique certificate manufacturing (MS) ID
 +
Production: 0x00000012
 +
Development: 0x00000003
 
|-
 
|-
−
| 3 (Wii U bank) || 0x1B0 (0x6C * 4) || 0x30 bytes || Unknown.
+
| 5 || 0x284 (0xA1 * 4) || 0x04 bytes || Wii U device unique certificate authority (CA) ID
 +
Production: 0x00000003
 +
Development: 0x00000002
 
|-
 
|-
−
| 3 (Wii U bank) || 0x1E0 (0x78 * 4) || 0x14 bytes || Wii U NAND HMAC.
+
| 5 || 0x288 (0xA2 * 4) || 0x04 bytes || Wii U device unique certificate manufacturing date (seconds elapsed since 1950-01-01)
 
|-
 
|-
−
| 3 (Wii U bank) || 0x1F4 (0x7D * 4) || 0x0C bytes || Unknown.
+
| 5 || 0x28C (0xA3 * 4) || 0x3C bytes || Wii U device unique certificate signature
 
|-
 
|-
−
| 4 (Wii U bank) || 0x200 (0x80 * 4) || 0x10 bytes || Unknown.
+
| 5 || 0x2C8 (0xB2 * 4) || 0x18 bytes || Reserved
 
|-
 
|-
−
| 4 (Wii U bank) || 0x210 (0x84 * 4) || 0x10 bytes || Wii U WagonU seed (only the last 0x04 bytes are used).
+
| 5 || 0x2E0 (0xB8 * 4) || 0x20 bytes || Reserved (locked out by boot1)
 
|-
 
|-
−
| 4 (Wii U bank) || 0x220 (0x88 * 4) || 0x20 bytes || vWii NG private key?
+
| 6 || 0x300 (0xC0 * 4) || 0x04 bytes || Wii U device authentication common certificate manufacturing (MS) ID
 +
Production: 0x00000002
 +
Development: 0x00000003
 
|-
 
|-
−
| 4 (Wii U bank) || 0x240 (0x90 * 4) || 0x20 bytes || Unknown.
+
| 6 || 0x304 (0xC1 * 4) || 0x04 bytes || Wii U device authentication common certificate authority (CA) ID
 +
Production: 0x00000001
 +
Development: 0x00000002
 
|-
 
|-
−
| 4 (Wii U bank) || 0x260 (0x98 * 4) || 0x10 bytes || Wii U RNG seed (only the first 0x04 bytes are used).
+
| 6 || 0x308 (0xC2 * 4) || 0x04 bytes || Wii U device authentication common certificate manufacturing date (seconds elapsed since 1950-01-01)
 
|-
 
|-
−
| 4 (Wii U bank) || 0x270 (0x9C * 4) || 0x10 bytes || Unknown.
+
| 6 || 0x30C (0xC3 * 4) || 0x3C bytes || Wii U device authentication common certificate signature
 
|-
 
|-
−
| 5 (Wii U bank) || 0x280 (0xA0 * 4) || 0x04 bytes || Wii U/vWii Root-CA version (0x00000012)?
+
| 6 || 0x348 (0xD2 * 4) || 0x10 bytes || Wii common2 key (for Korea)
 
|-
 
|-
−
| 5 (Wii U bank) || 0x284 (0xA1 * 4) || 0x04 bytes || Wii U/vWii Root-CA MS (0x00000003)?
+
| 6 || 0x358 (0xD6 * 4) || 0x08 bytes || Reserved
 
|-
 
|-
−
| 5 (Wii U bank) || 0x288 (0xA2 * 4) || 0x04 bytes || Unknown.
+
| 6 || 0x360 (0xD8 * 4) || 0x20 bytes || Wii U device authentication common certificate private key
 +
Only 0x1E bytes are used.
 
|-
 
|-
−
| 5 (Wii U bank) || 0x28C (0xA3 * 4) || 0x40 bytes || Wii U/vWii Root-CA signature?
+
| 7 || 0x380 (0xE0 * 4) || 0x20 bytes || Reserved (locked out by boot1)
 
|-
 
|-
−
| 5 (Wii U bank) || 0x2CC (0xB3 * 4) || 0x14 bytes || Unknown.
+
| 7 || 0x3A0 (0xE8 * 4) || 0x10 bytes || [[Boot1|Boot1]] key (locked out by boot0)
 
|-
 
|-
−
| 5 (Wii U bank) || 0x2E0 (0xB8 * 4) || 0x20 bytes || Empty.
+
| 7 || 0x3B0 (0xEC * 4) || 0x10 bytes || Reserved (locked out by boot0)
 
|-
 
|-
−
| 6 (Wii SEEPROM bank) || 0x300 (0xC0 * 4) || 0x60 bytes || Old Wii SEEPROM certificate data.
+
| 7 || 0x3C0 (0xF0 * 4) || 0x20 bytes || Reserved
 +
|-
 +
| 7 || 0x3E0 (0xF8 * 4) || 0x04 bytes || Reserved
 +
|-
 +
| 7 || 0x3E4 (0xF9 * 4) || 0x04 bytes || Latte package wafer X and Y positions
 +
|-
 +
| 7 || 0x3E8 (0xFA * 4) || 0x04 bytes ||
 +
|-
 +
| 7 || 0x3EC (0xFB * 4) || 0x04 bytes || Latte package revision
 +
|-
 +
| 7 || 0x3F0 (0xFC * 4) || 0x08 bytes || [[#LattePackageId|LattePackageId]]
 +
|-
 +
| 7 || 0x3F8 (0xFE * 4) || 0x04 bytes || Reserved
 +
|-
 +
| 7 || 0x3FC (0xFF * 4) || 0x04 bytes || [[#DebugType|DebugType]]
 +
|}
 +
 
 +
=== FuseType ===
 +
{| class="wikitable" border="1"
 +
|-
 +
! Bits
 +
! Description
 +
|-
 +
| 0-26
 +
| Reserved
 +
|-
 +
| 27
 +
| Development
 +
|-
 +
| 28
 +
| Production
 +
|-
 +
| 29
 +
|
 +
|-
 +
| 30
 +
| Causes an error in boot0
 +
|-
 +
| 31
 +
| Disables evaluation mode
 +
|}
 +
 
 +
=== LattePackageId ===
 +
This identifier is composed by a three digit date code, followed by two letters and three characters. The Latte SoC includes this identifier in its shield's markings, but prefixed with the number "1".
 +
 
 +
Example: 226LP734 (SoC shield's marking is 1226LP734)
 +
 
 +
"226" translates to the 26th week of year 2012, "LP" indicates the [[#MfgSite|manufacturing site]] is in Japan and "734" appears to be a lot trace code.
 +
 
 +
==== MfgSite ====
 +
{| class="wikitable"
 +
|-
 +
! Value
 +
! Description
 +
|-
 +
| LP
 +
| Japan
 +
|-
 +
| CW
 +
| Korea
 +
|-
 +
| AV
 +
| Taiwan
 +
|-
 +
| TV
 +
| Taiwan
 +
|-
 +
| UV
 +
| Taiwan
 +
|}
 +
 
 +
=== DebugType ===
 +
{| class="wikitable" border="1"
 +
|-
 +
! Bits
 +
! Description
 +
|-
 +
| 0
 +
| Set in production mode
 +
|-
 +
| 1-3
 +
| Reserved
 +
|-
 +
| 4
 +
|
 +
|-
 +
| 5
 +
|
 +
|-
 +
| 6
 +
|
 +
|-
 +
| 7
 +
| Disables JTAG
 +
|-
 +
| 8-29
 +
| Reserved
 +
|-
 +
| 30
 +
|
 +
|-
 +
| 31
 +
|
 +
|}
 +
 
 +
= Espresso =
 +
{{Infobox MMIO
 +
| arm = Full
 +
| ppc = Full
 +
| base = 0x0c320000
 +
| len = 0x40
 +
| bits = 32
 +
}}
 +
 
 +
== Contents ==
 +
All data here is written during manufacturing. Items listed as reserved are not known to be used and are either empty or random.
 +
{| style="border: 1px solid #bbb; border-collapse: collapse; background-color: #eef; padding: 0.2em 0.2em 0.2em 0.2em;" border="1" cellpadding="2"
 +
|- style="background-color: #ddd;"
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x000 || 0x10 bytes || Espresso Wii U ancast key
 +
|-
 +
| 0x010 || 0x10 bytes || Espresso vWii ancast key
 +
|-
 +
| 0x020 || 0x1C bytes || Reserved
 +
|-
 +
| 0x03C || 0x4 bytes || [[#FuseType_2|FuseType]]
 +
Production: 0xB4000001
 +
Development: 0xAC000001
 +
|}
 +
 
 +
=== FuseType ===
 +
{| class="wikitable" border="1"
 +
|-
 +
! Bits
 +
! Description
 
|-
 
|-
−
| 6 (Wii SEEPROM bank) || 0x360 (0xD8 * 4) || 0x20 bytes || Old Wii SEEPROM signature?
+
| 0
 +
|  
 
|-
 
|-
−
| 7 (boot1 bank) || 0x380 (0xE0 * 4) || 0x20 bytes || Empty.
+
| 1-25
 +
| Reserved
 
|-
 
|-
−
| 7 (boot1 bank) || 0x3A0 (0xE8 * 4) || 0x10 bytes || boot1 key.
+
| 26
 +
| Disables evaluation mode
 
|-
 
|-
−
| 7 (boot1 bank) || 0x3B0 (0xEC * 4) || 0x30 bytes || Empty.
+
| 27
 +
| Development
 
|-
 
|-
−
| 7 (boot1 bank) || 0x3E0 (0xF8 * 4) || 0x10 bytes || Unknown.
+
| 28
 +
| Production
 
|-
 
|-
−
| 7 (boot1 bank) || 0x3F0 (0xFC * 4) || 0x0C bytes || ASCII tag (unknown meaning).
+
| 29
 +
|  
 
|-
 
|-
−
| 7 (boot1 bank) || 0x3FC (0xFF * 4) || 0x04 bytes || JTAG status.
+
| 30
−
Set to 0xE1 in retail.
+
|  
−
If bit 0x80 is set, JTAG is disabled.
   
|-
 
|-
 +
| 31
 +
|
 
|}
 
|}
Retrieved from "https://wiiubrew.org/wiki/Special:MobileDiff/1731...4099"