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NAND Boot Program: Difference between revisions

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Added info on v1.0
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looks like v1.1 doesn't have the ESP stuff
 
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The '''NAND Boot Program''' is a developer tool packaged in various titles. While its purpose is not known, it mentions many things that were probably used internally.
The '''NAND Boot Program''' is a [[DOL]] that is the boot content of every [[Broadway]] title (except the [[System Menu]]). It is linked with [[Revolution OS]], though a separate copy from the game itself. It is responsible for loading the main content from index 1 of a [[title]]; newer versions are able to apply an LZ11 decompression.


== Versions ==
Similar to the System Menu, the NAND Boot Program is governed by its own [[/BS2|BS2]] with far fewer states.
Several versions have been found: the <code>%s</code> version in [[IOS15]] and [[IOS21]], the <code>v1.1</code> version in some channels, and the <code>v1.0</code> version in [[Forecast Channel dummy]] and [[News Channel dummy]]. v1.1 has a build string of <code>release build: Oct 26 2006 16:22:40 (0x4199_60831)</code>, while %s has a build string of <code>release build: Jul 31 2007 12:29:44 (0x4199_60831)</code>. The only other differences between v1.1 and %s seem to be that %s includes patches for the [[Internet Channel]], and %s mentions RVA units.


v1.0's strings are identical to v1.1's, although the <code>RVL_SDK - OS</code> that follows has a build date of Sep 15 2006 for v1.0, and Sep 21 2006 for v1.1.
== SDK libraries ==
These libraries were taken from the version in Mii Channel v6.
 
{| class="wikitable"
! Name
! Build timestamp
|-
| [[Revolution OS|OS]]
| Aug 8 2007 02:06:24 (0x4199_60831)
|-
| EXI
| Aug 8 2007 01:59:22 (0x4199_60831)
|-
| SI
| Aug 8 2007 02:07:10 (0x4199_60831)
|-
| VI
| Aug 8 2007 02:07:17 (0x4199_60831)
|-
| DVD
| Aug 8 2007 01:59:13 (0x4199_60831)
|-
| [[NAND (SDK)|NAND]]
| Aug 8 2007 02:08:58 (0x4199_60831)
|-
| [[SC]]
| Aug 8 2007 02:09:03 (0x4199_60831)
|-
| [[PAD]]
| Aug 8 2007 02:07:08 (0x4199_60831)
|}


== ESP ==
== ESP ==
Error messages for <code>ES_InitLib</code>, <code>ES_GetTitleId</code>, <code>ESP_OpenContentFile</code>, <code>ESP_ReadContentFile</code>, <code>ESP_CloseContentFile</code>, and <code>ESP_CloseLib</code> can be found near the beginning of the strings. This suggests that ESP may have been a separate module from ES; possibly the same thing the P stands for in [[IOSP]].
Error messages for <code>ES_InitLib</code>, <code>ES_GetTitleId</code>, <code>ESP_OpenContentFile</code>, <code>ESP_ReadContentFile</code>, <code>ESP_CloseContentFile</code>, and <code>ESP_CloseLib</code> can be found in <code>BS2Tick</code> in v1.21 (and possibly v1.4). It is not clear what ESP is; the lists of function names in [[SEL]] files list all of these functions as [[ES]] functions, so it is possible that this was simply a typo, hence the inconsistency in <code>ES_InitLib</code> and <code>ESP_CloseLib</code>.
 
== RVA ==
There is a logic used to determine whether the current device is an [[Wii#RVA|RVA]] system; this is done by checking if [[:/title/00000001/00000002/data/RVA.txt]] exists.
 
== Internet Channel patches ==
Versions 1.21 and above perform a "MEM1 patch" and a "MEM2 patch" on the [[Internet Channel]]. The details of this patch are currently not known.


== Dev units ==
== Version history ==
There is a string in the %s version saying "Set Device Code : [RVA]", which probably means dev units used code RVA instead of RVL. Strings already exist in the [[System Menu]] that suggest that RVL is not used for dev units.
=== v1.4 ===
* Replaced <code>DEVELOPMENT MODE</code> in the heading string with <code>%s</code>, possibly indicating that this was meant to be the first version released
* Main binary is now uncompressed (using [[LZ11]]) before booting


There also seems to be a file called [[:/title/00000001/00000002/data/RVA.txt]] that is referenced.
=== v1.21 ===
* Replaced the version in the heading string with <code>%s</code> (with the version stored elsewhere)


== Internet Channel patches ==
=== v1.1 ===
The %s version performs a "MEM1 patch" and a "MEM2 patch" on the Internet Channel. The details of this patch are currently not known.
Found in many public [[channel]]s. Differences from v1.0 are unknown.
 
=== v1.0 ===
First release. Probably a beta version, since the only known appearance is in [[Forecast Channel dummy]] and [[News Channel dummy]] v0.


[[Category:Official software]]
[[Category:NAND Boot Program]]

Latest revision as of 05:49, 19 August 2022

The NAND Boot Program is a DOL that is the boot content of every Broadway title (except the System Menu). It is linked with Revolution OS, though a separate copy from the game itself. It is responsible for loading the main content from index 1 of a title; newer versions are able to apply an LZ11 decompression.

Similar to the System Menu, the NAND Boot Program is governed by its own BS2 with far fewer states.

SDK libraries

These libraries were taken from the version in Mii Channel v6.

Name Build timestamp
OS Aug 8 2007 02:06:24 (0x4199_60831)
EXI Aug 8 2007 01:59:22 (0x4199_60831)
SI Aug 8 2007 02:07:10 (0x4199_60831)
VI Aug 8 2007 02:07:17 (0x4199_60831)
DVD Aug 8 2007 01:59:13 (0x4199_60831)
NAND Aug 8 2007 02:08:58 (0x4199_60831)
SC Aug 8 2007 02:09:03 (0x4199_60831)
PAD Aug 8 2007 02:07:08 (0x4199_60831)

ESP

Error messages for ES_InitLib, ES_GetTitleId, ESP_OpenContentFile, ESP_ReadContentFile, ESP_CloseContentFile, and ESP_CloseLib can be found in BS2Tick in v1.21 (and possibly v1.4). It is not clear what ESP is; the lists of function names in SEL files list all of these functions as ES functions, so it is possible that this was simply a typo, hence the inconsistency in ES_InitLib and ESP_CloseLib.

RVA

There is a logic used to determine whether the current device is an RVA system; this is done by checking if /title/00000001/00000002/data/RVA.txt exists.

Internet Channel patches

Versions 1.21 and above perform a "MEM1 patch" and a "MEM2 patch" on the Internet Channel. The details of this patch are currently not known.

Version history

v1.4

  • Replaced DEVELOPMENT MODE in the heading string with %s, possibly indicating that this was meant to be the first version released
  • Main binary is now uncompressed (using LZ11) before booting

v1.21

  • Replaced the version in the heading string with %s (with the version stored elsewhere)

v1.1

Found in many public channels. Differences from v1.0 are unknown.

v1.0

First release. Probably a beta version, since the only known appearance is in Forecast Channel dummy and News Channel dummy v0.

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