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NCCH: Difference between revisions

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TimmSkiller (talk | contribs)
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Small refactor, add form type and content type, fix ncchflags[5]
 
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=== NCCH Flags ===
=== NCCH Flags ===
==== Content Type ====
{| class="wikitable" border="1"
|-
! Value !! Description
|-
| 0 || Unspecified
|-
| 1 || System Update
|-
| 2 || Instruction Manual
|-
| 3 || Download Play Child
|-
| 4 || Trial (Demo)
|-
| 5 || Extended System Update
|}
==== Form Type ====
{| class="wikitable" border="1"
|-
! Value !! Description
|-
| 0 || Not Assigned
|-
| 1 || Simple Content
|-
| 2 || Executable without RomFS
|-
| 3 || Executable
|}
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
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|-
|-
|  5
|  5
|  Content Type Bit-masks: Data = 0x1, Executable = 0x2, SystemUpdate = 0x4, Manual = 0x8, Child = (0x4<nowiki>|</nowiki>0x8), Trial = 0x10. When 'Data' is set, but not 'Executable', NCCH is a CFA. Otherwise when 'Executable' is set, NCCH is a CXI.
|  bits 0-1: [[NCCH#Form_Type|Content Form Type]]
bits 2-7: [[NCCH#Content_Type|Content Type]]
|-
|-
|  6
|  6
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CXIs NCCH header signature is verified using the RSA modulus stored in the exheader, while CFAs NCCH header is verified with a fixed RSA modulus. The public exponent is 65537 for both.
CXIs NCCH header signature is verified using the RSA modulus stored in the exheader, while CFAs NCCH header is verified with a fixed RSA modulus. The public exponent is 65537 for both.


==== NCCH header example for Lego Starwars III ====
== Examples ==
 
=== NCCH header example for Lego Starwars III ===
  Signature:              720FF8F83F2A1E998322A026D1434165
  Signature:              720FF8F83F2A1E998322A026D1434165
                         ED19642ABC1CB2722135AA202BEAD60A
                         ED19642ABC1CB2722135AA202BEAD60A
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  Note: Offsets and sizes in media units have been converted to byte sizes.
  Note: Offsets and sizes in media units have been converted to byte sizes.


==== Plain region example for Lego Starwars III ====
=== Plain region example for Lego Starwars III ===
  0004a00: 5b 53 44 4b 2b 4e 49 4e 54 45 4e 44 4f 3a 43 54  [SDK+NINTENDO:CT    [SDK+NINTENDO:CTR_SDK-0_14_23_200_none]
  0004a00: 5b 53 44 4b 2b 4e 49 4e 54 45 4e 44 4f 3a 43 54  [SDK+NINTENDO:CT    [SDK+NINTENDO:CTR_SDK-0_14_23_200_none]
  0004a10: 52 5f 53 44 4b 2d 30 5f 31 34 5f 32 33 5f 32 30  R_SDK-0_14_23_20
  0004a10: 52 5f 53 44 4b 2d 30 5f 31 34 5f 32 33 5f 32 30  R_SDK-0_14_23_20
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  0004ae0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  0004ae0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................


==== Example dependency list from the extended header ====
=== Example dependency list from the extended header ===
  00850 41 50 54 3A 55 00 00 00 24 68 69 6F 46 49 4F 00 APT:U...$hioFIO.
  00850 41 50 54 3A 55 00 00 00 24 68 69 6F 46 49 4F 00 APT:U...$hioFIO.
  00860 24 68 6F 73 74 69 6F 30 24 68 6F 73 74 69 6F 31 $hostio0$hostio1
  00860 24 68 6F 73 74 69 6F 30 24 68 6F 73 74 69 6F 31 $hostio0$hostio1
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