Editing Talk:SC EEPROM

== Memory test diagnosis NVS flag ==

There is a NVS flag which enables a special diagnostic mode at startup. This flag is enabled on Proto/DECR. It allows memtest diagnose.

Pseudo-code:
<source lang="python">
def check_bootrom_diag_mode(mode, param)
        diag_mode = get_eeprom_bootrom_diag()
        if diag_mode & 0x1:
                if diag_mode & 0x100:
                        return 0
                mode = (diag_mode >> 3) & 0x1
                param = (diag_mode >> 3) & 0x1
        else:
                mode = (diag_mode >> 1) & 0x1
                param = -1
        return 1
</source>

== EEPROM Dumps ==

* https://mega.co.nz/#!Bk1ESBZT!pqAB6riHhZSCPAftvjm2MFf3j0It61huT3WT2AbWS-A -> DEAD LINK

== EEPROM Strings (CP memory dump, DECR) ==

http://pastie.org/private/usd2zi8mw3igycsh1a395q -> DEAD LINK

== Bus Pirate stuff ==

http://i.imgur.com/48rbR51.png

(needs more wikifying)

== On standby ==

* Note: during this time the plaintext EEPROM is never read even once!
* Additionally, the areas 0x26B0, 0x26D0 are not read

* Checks status
* Unlocks Write Command
* Reads PATCH top half region
* Reads PATCH bottom half region
* Reads 0x2790?(0x20)
* Reads 0x27B0?(0x10)
* Reads 0x26D0 (0x10)
* Reads some configs? (around >0x31XX area)
* Reads 0x0 (0x10)
* Reads some configs?
* Reads 0x10(0x280) (EID1)?
* Reads 0x3A00 (0x1)
* Reads 0x290 (0x10) (EID1 CMAC?)
* Reads 0x2A0 (0x20)
* Reads 0x2C0 (0x20)
* Reads 0x2E0 (0x20)
* Writes some stuff to 0x2C0/0x2E0/0x2A0 (mostly ff's)
* ReReads EID1 and CMAC
* Reads 0x360
* Reads 0x370
* Writes (again) mostly ff's to 0x360 and 0x370
* ReReads EID1 and CMAC
* Does same process with 0x460 and 0x470
* Reads 0x2710 and 0x2730 (0x20,0x10) ???
* Reads 0x2700 (0x10)
* fini!

= MemoryMap Syscon BB Chip =

<pre>
0x1000-0x1FFF:PTCH Region (patch written here)
</pre>

= Nice read about Syscon EEPROM =

http://rmscrypt.wordpress.com/2011/02/01/lets-look-at-syscon/

= Experimental table =
The goal is to join together all the "memory map" info in a single table

{| class="wikitable" style="line-height:110%; font-size:95%"
|-
! rowspan="3" | Area<br>Name !! colspan="3" | [[Syscon_Hardware|SPI / UART]] !! colspan="8" | Syscall 863 !! rowspan="3" | Value Name !! rowspan="3" | Description
|-
! colspan="2" | [[Mullion]] !! [[Sherwood]] !! rowspan="2" | [[SC_Communication#Syscon_Services|SERV_NVS]]<br>Region !! rowspan="2" | Block ID !! colspan="2" | [[Update_Manager|UM Whitelist]] !! colspan="2" | [[SC_Manager|SCM Whitelist]] !! rowspan="2" | Offset !! rowspan="2" | Size
|-
! [[Syscon_CXR713_Series|CXR713]] !! [[Syscon_CXR714_Series|CXR714]] !! [[Syscon_SW_Series|SW]]/[[Syscon_SW2_Series|SW2]]/[[Syscon_SW3_Series|SW3]] !! Read !! Write !! Read !! Write
|-
| rowspan="6" | <span style="writing-mode:vertical-lr; transform:rotate(180deg);">Industry Area<br>a.k.a.<br>OS Version Area</span> || rowspan="6" | 0x2F00-0x2FFF || rowspan="6" | 0x2F00-0x2FFF || rowspan="6" | 0xE00-0xEFF || rowspan="6" | 0x20 || rowspan="6" | 0x10 || {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02F00 || 0x08 || Manufacturing Update Release Version String || 
|-
| {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02F08 || 0x10 || Manufacturing Update Build Version + Build Date String || 
|-
| {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02F20 || 0x08 || Manufacturing Update Build Target ID || 
|-
| {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02F28 || 0xD0 || Undocumented || 
|-
| {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02FF8 || 0x01 || Factory Bit || 
|-
| {{yes}} || {{yes}} || {{yes}} || {{yes}} || 0x02FF9 || 0x07 || Undocumented || 
|}