Talk:SC EEPROM: Difference between revisions

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|-
|-
! System Info !! 0x200 !! {{no}}
! System Info !! 0x200 !! {{no}}
| 0x2600 || 0x2600 || ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x200 ||  ||  
| 0x2600 || 0x2600 || ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x200 ||  ||  
|- {{cellcolors|#ffffcc}}
|- {{cellcolors|#ffffcc}}
! Patch 1 !! 0x400 !! {{No}}
! Patch 1 !! 0x400 !! {{No}}
| 0x2800 || 0x2800 || <abbr title="On Sherwood the patch isn't even stored in the emulated eeprom, it's stored inside the firmware (0x2000-0x2FFF)>0x2000 ?</abbr> || {{exploitable}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x400 || [[Syscon_Firmware#Syscon_patches|Syscon Firmware Patch]] (top half) Encrypted ||  
| 0x2800 || 0x2800 || <abbr title="On Sherwood the patch isn't even stored in the emulated eeprom, it's stored inside the firmware (0x2000-0x2FFF)>0x2000 ?</abbr> || {{exploitable}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x400 || [[Syscon_Firmware#Syscon_patches|Syscon Firmware Patch]] (top half) Encrypted ||  
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x300 !! {{No}}
! - !! 0x300 !! {{No}}
| 0x2C00 || 0x2C00 || 0x0B00 ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x300 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x2C00 || 0x2C00 || 0x0B00 ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x300 || style="text-align:center" | ''not used'' || Filled with FF's
|-
|-
! Industry Area !! 0x100 !! {{no}}
! Industry Area !! 0x100 !! {{no}}
Line 103: Line 103:
|-
|-
! Platform Config !! 0x100 !! {{yes}}
! Platform Config !! 0x100 !! {{yes}}
| 0x3100 || 0x3100 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 ||  ||  
| 0x3100 || 0x3100 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 ||  ||  
|-
|-
! Hardware Config !! 0x100 !! {{yes}}
! Hardware Config !! 0x100 !! {{yes}}
| 0x3200 || 0x3200 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 ||  ||  
| 0x3200 || 0x3200 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 ||  ||  
|-
|-
! Thermal Config !! 0x200 !! {{yes}}
! Thermal Config !! 0x200 !! {{yes}}
| 0x3300 || 0x3300 || 0x0250 || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x200 || [[Syscon_Thermal_Config/structs|Data table]]. See: [[Syscon Thermal Config]] ||  
| 0x3300 || 0x3300 || 0x0250 || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x200 || [[Syscon_Thermal_Config/structs|Data table]]. See: [[Syscon Thermal Config]] ||  
|-
|-
! On/Off Count/Time !! 0x200 !! {{no}}
! On/Off Count/Time !! 0x200 !! {{no}}
| 0x3500 || 0x3500 || 0x0800 ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x200 || Data table ||  
| 0x3500 || 0x3500 || 0x0800 ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x200 || Data table ||  
|-
|-
! Error Log !! 0x100 !! {{no}}
! Error Log !! 0x100 !! {{no}}
| 0x3700 || 0x3700 || 0x0900 || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 || Data table. See: [[Syscon Error Codes]] ||  
| 0x3700 || 0x3700 || 0x0900 || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 || Data table. See: [[Syscon Error Codes]] ||  
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x100 !! {{No}}
! - !! 0x100 !! {{No}}
| 0x3800 || 0x3800 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x3800 || 0x3800 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 || style="text-align:center" | ''not used'' || Filled with FF's
|-
|-
! Board Config !! 0x100 !! {{yes}}
! Board Config !! 0x100 !! {{yes}}
| 0x3900 || 0x3900 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 ||  ||  
| 0x3900 || 0x3900 || 0x0000~ ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 ||  ||  
|-
|-
! HDMI/DVE Config !! 0x100 !! {{no}}
! HDMI/DVE Config !! 0x100 !! {{no}}
| 0x3A00 || 0x3A00 || 0x0A00 ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 ||  ||  
| 0x3A00 || 0x3A00 || 0x0A00 ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 ||  ||  
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x100 !! {{No}}
! - !! 0x100 !! {{No}}
| 0x3B00 || 0x3B00 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x100 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x3B00 || 0x3B00 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x100 || style="text-align:center" | ''not used'' || Filled with FF's
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x200 !! {{yes}}
! - !! 0x200 !! {{yes}}
| 0x3C00 || 0x3C00 || 0x0400~ ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x200 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x3C00 || 0x3C00 || 0x0400~ ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x200 || style="text-align:center" | ''not used'' || Filled with FF's
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x200 !! {{yes}}
! - !! 0x200 !! {{yes}}
| 0x3E00 || 0x3E00 || 0x0600 ? || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x200 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x3E00 || 0x3E00 || 0x0600 ? || {{yes}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x200 || style="text-align:center" | ''not used'' || Filled with FF's
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x400 !! {{No}}
! - !! 0x400 !! {{No}}
| 0x4000 || 0x7000 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x400 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x4000 || 0x7000 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x400 || style="text-align:center" | ''not used'' || Filled with FF's
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0xB00 !! {{No}}
! - !! 0xB00 !! {{No}}
| 0x4400 || 0x7400 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0xB00 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x4400 || 0x7400 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0xB00 || style="text-align:center" | ''not used'' || Filled with FF's
|- {{cellcolors|lightgrey}}
|- {{cellcolors|lightgrey}}
! - !! 0x2000 !! {{No}}
! - !! 0x2000 !! {{No}}
| 0x5000 || 0x5000 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0x2000 || style="text-align:center" | ''not used'' || Filled with FF's
| 0x5000 || 0x5000 || N/A ? || {{yes}} ? || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0x2000 || style="text-align:center" | ''not used'' || Filled with FF's
|-
|-
! System Config ? !! 0x100 !! {{no}}
! System Config ? !! 0x100 !! {{no}}
Line 157: Line 157:
|- {{cellcolors|#ffffcc}}
|- {{cellcolors|#ffffcc}}
! Patch 2 !! 0xC00 !! {{No}}
! Patch 2 !! 0xC00 !! {{No}}
| 0x7400 || 0x4400 || <abbr title="On Sherwood the patch isn't even stored in the emulated eeprom, it's stored inside the firmware (0x2000-0x2FFF)>0x2400 ?</abbr> || {{exploitable}} || {{no}} || {{no}} || {{no}} || {{no}} || ? || 0xC00 || [[Syscon_Firmware#Syscon_patches|Syscon Firmware Patch]] (bottom half) Encrypted ||
| 0x7400 || 0x4400 || <abbr title="On Sherwood the patch isn't even stored in the emulated eeprom, it's stored inside the firmware (0x2000-0x2FFF)>0x2400 ?</abbr> || {{exploitable}} || {{no}} || {{no}} || {{patchable}} ? || {{patchable}} ? || ? || 0xC00 || [[Syscon_Firmware#Syscon_patches|Syscon Firmware Patch]] (bottom half) Encrypted ||
|}
|}

Revision as of 00:17, 3 December 2021

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: 

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

EEPROM Dumps

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

0x1000-0x1FFF:PTCH Region (patch written here)

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

Round 2
Area SPI / UART Syscall 863 Data Name Wikitable builder Notes (temporal)
Name Size csum Mullion Sherwood whitelist Block ID
NVS Region		 whitelist Offset Size
CXR713 CXR714 SW/2/3(emu) EEP lv1/DM UM SCM
System Info 0x200 No 0x2600 0x2600 ? Yes ? No No  Patch  ?  Patch  ? ? 0x200
Patch 1 0x400 No 0x2800 0x2800 0x2000 ?  Exploit  No No  Patch  ?  Patch  ? ? 0x400 Syscon Firmware Patch (top half) Encrypted
- 0x300 No 0x2C00 0x2C00 0x0B00 ? Yes No No  Patch  ?  Patch  ? ? 0x300 not used Filled with FF's
Industry Area 0x100 No 0x2F00 0x2F00 0x0E00 Yes 0x10  Patch  Yes Yes 0x02F00 This wikitable row needs to be splitted up to 20+ rows
Customer Service Area 0x100 No 0x3000 0x3000 0x0F00 Yes 0x20  Patch  Yes Yes 0x03000 0x100 Filled with FF's ?
Platform Config 0x100 Yes 0x3100 0x3100 0x0000~ ? Yes No No  Patch  ?  Patch  ? ? 0x100
Hardware Config 0x100 Yes 0x3200 0x3200 0x0000~ ? Yes No No  Patch  ?  Patch  ? ? 0x100
Thermal Config 0x200 Yes 0x3300 0x3300 0x0250 Yes No No  Patch  ?  Patch  ? ? 0x200 Data table. See: Syscon Thermal Config
On/Off Count/Time 0x200 No 0x3500 0x3500 0x0800 ? Yes No No  Patch  ?  Patch  ? ? 0x200 Data table
Error Log 0x100 No 0x3700 0x3700 0x0900 Yes No No  Patch  ?  Patch  ? ? 0x100 Data table. See: Syscon Error Codes
- 0x100 No 0x3800 0x3800 N/A ? Yes ? No No  Patch  ?  Patch  ? ? 0x100 not used Filled with FF's
Board Config 0x100 Yes 0x3900 0x3900 0x0000~ ? Yes No No  Patch  ?  Patch  ? ? 0x100
HDMI/DVE Config 0x100 No 0x3A00 0x3A00 0x0A00 ? Yes ? No No  Patch  ?  Patch  ? ? 0x100
- 0x100 No 0x3B00 0x3B00 N/A ? Yes ? No No  Patch  ?  Patch  ? ? 0x100 not used Filled with FF's
- 0x200 Yes 0x3C00 0x3C00 0x0400~ ? Yes No No  Patch  ?  Patch  ? ? 0x200 not used Filled with FF's
- 0x200 Yes 0x3E00 0x3E00 0x0600 ? Yes No No  Patch  ?  Patch  ? ? 0x200 not used Filled with FF's
- 0x400 No 0x4000 0x7000 N/A ? Yes ? No No  Patch  ?  Patch  ? ? 0x400 not used Filled with FF's
- 0xB00 No 0x4400 0x7400 N/A ? Yes ? No No  Patch  ?  Patch  ? ? 0xB00 not used Filled with FF's
- 0x2000 No 0x5000 0x5000 N/A ? Yes ? No No  Patch  ?  Patch  ? ? 0x2000 not used Filled with FF's
System Config ? 0x100 No 0x7000 0x4000 0x1000 Yes 0x0  Patch  ? Yes 0x48000 0x100 Filled with FF's ?
Hypervisor Config ? 0x100 No 0x7100 0x4100 0x1100 Yes 0x1  Patch  ? Yes 0x48800 Header + Data table ?
Flags and Tokens 0x100 No 0x7200 0x4200 0x1200 Yes 0x2  Patch  {{yes}} or {{patchable}} Yes 0x48C00 This wikitable row needs to be splitted up to 50+ rows
System Data ? 0x100 No 0x7300 0x4300 0x1300 Yes 0x3  Patch  ? Yes 0x48D00 0x100 Filled with FF's ?
Patch 2 0xC00 No 0x7400 0x4400 0x2400 ?  Exploit  No No  Patch  ?  Patch  ? ? 0xC00 Syscon Firmware Patch (bottom half) Encrypted
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