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PS4 southbridge contains two processors named EMC and EAP on the same die that are mainly used on boot, during rest mode and for servicing.
= Components =
== Southbridge processors ==
The two processors are on the same die. It is a SoC (System on Chip).
=== EMC ===
EMC could stand for External Micro Controller. EMC was named MediaCon by some people when its name was still unknown.
The role of EMC is to load EMC Initial Program Loader, to be an interface for icc for the main [[APU]] kernel and [[Syscon]] and to offer a debug interface via UART that does not rely on [[Syscon]] or main APU. EMC runs its own FreeBSD kernel. It is a Marvell Armada, an ARM-based SoC. Sony stuck a [[PCIe]] bridge on it. It exposes ARM peripherals to the x86 side. There is some extra stuff (e.g. HPET, ACPI stuff).
EMC cpuid = 412FC231 (ARM Cortex-M3 r2p1). CPU clock: maybe about 100MHz.
==== EMC Initial Program Loader ====
EMC Initial Program Loader is stored encrypted in a SLB2 container in PS4 Serial Flash. Its role is to launch both EAP Kernel Boot Loader and AMD bootROM.
=== EAP ===
EAP could stand for External Application Processor.
The role of EAP is to handle media (online [[Wireless]]/[[GbLAN]], [[Bluray Drive]] and [[HDD SSD|HDD/SSD]]) even when the PS4 is in standby mode. EAP runs its own FreeBSD kernel in standby mode, activated to handle tasks such as downloading games updates while the PS4 is in standby.
It handles several tasks to offload the [[APU]]:
* Network connections: [[Wireless]] and [[GbLAN]], including background downloading and [[PlayGo]]
* File handling ([[Bluray Drive]], [[Harddrive]] and [[USB 3.0]]), including background caching
* Main serial flash handling
EAP consists of Marvell PJ4C B0 rev 1 cores, ARMv7 CORTEX-A8 running FreeBSD 9 kernel. CPU clock: 500MHz. DDR clock: 800MHz.
As EAP Core software is unsigned, unencrypted and easily replaceable on PS4 HDD with a PS4 kernel exploit, it is possible to run homebrew code on EAP processor. See [https://github.com/psxdev/eapdev eapdev by Bigboss (psxdev)].
==== EAP Kernel Boot Loader ====
EAP Kernel Boot Loader is stored encrypted in a SLB2 container in PS4 Serial Flash. The role of EAP Kernel Boot Loader is to decrypt then uncompress the EAP Kernel. The encrypted EAP Kernel is stored at virtual address 0xC1000000 and the decrypted and uncompressed EAP Kernel is located at virtual address 0xC3000000.
==== EAP Kernel ====
EAP Kernel is located at virtual address 0xC3000000. Encrypted EAP Kernel is mounted on device da0x2 along with minila file.
==== minila ====
minila is an ELF file stored in /minila/ folder in EAP virtual filesystem (packed along with EAP Kernel). Minila is "AMD SceSysCore mini" equivalent for EAP.
==== EAP Core ====
EAP Core is the only usermode executable running on EAP. It is stored unencrypted as SceEapCore.elf in PS4 HDD.
==== EAP Filesystem from EAP Kernel binary ====
<pre>
/dev/
/eap_tmp/
/eap_user/
/eap_vsh/
/minila/
/minila/minila
/rescue/
/update/
/user/
</pre>
==== EAP files on HDD ====
* da0x2 HDD partition is mounted to /eap_kern/ but is encrypted. Only EMC Kernel Boot Loader reads and decrypts this partition then loads it in EAP DDR3 memory and launches EMC Kernel.
* da0x3 HDD partition is mounted to /eap_vsh/.
<pre>
<pre>
/eap_vsh/common/
Aeolia SAA-XXX (and previous), SAB
/eap_vsh/common/cert/
Belize SAC,SAD
/eap_vsh/common/cert/CA_list.cer
Belize 2 SAE NVA-001
/eap_vsh/etc/
Baikal
/eap_vsh/etc/bgdc/
/eap_vsh/etc/bgdc/config.xml
/eap_vsh/etc/timezone.dat
/eap_vsh/SceEapCore.elf
</pre>
</pre>
==== EAP files on Serial Flash ====


<pre>
<pre>
sflash0s0x33: SLB2 container
Aeolia 1000 (and previous), 1100
sflash0s0x33/C0010001: EMC Kernel Boot Loader
Belize 1200,2000
sflash0s0x33/C0018001: EMC Kernel Boot Loader Information
Belize 2 2100 7000
Baikal
</pre>
</pre>
== Southbridge RAM ==
Southbridge chip is connected to its own DDR3 SDRAM. It is named "sbram" as abbreviation for SouthBridge RAM.
=== PS4 Fat and Slim ===
PS4 Fat and Slim Southbridge has access to one 2Gb DDR3 chip, for a total of 256MB of memory.
=== PS4 Pro ===
PS4 Pro Southbridge has access to two 4Gb DDR3 chips, for a total of 1GB of memory.
== Serial Flash ==
Southbridge contains a 256MB Serial flash.
[[Aeolia]] has Macronix [[MX25L25635FMI-10G]].
== Auxiliary components ==
Southbridge is connected to the main [[APU]] by [[PCIe|PCI-Express x4]] and to [[Syscon]] by SPI.
[[Aeolia]] has SATA bridge [[MB86C311B]], [[GbLAN]] controller [[88EC060-NN82]].
= Southbridge revisions =
There are three major hardware revisions of the PS4 southbridge, named Aeolia, Belize and Baikal.
See also [[Aeolia]].
== Motherboards per Southbridge revisions ==
{| class="wikitable sortable"
|-
! Southbridge Codename !! Southbridge Labeling !! Motherboards
|-
| [[Aeolia]] || [[CXD90025G]] ||
[[CVN-K12]]<br />
[[SAA-001]]<br />
[[SAB-001]]
|-
| [[Belize]] || [[CXD90036G]] ||
[[SAC-001]]<br />
[[SAD-001]]<br />
[[SAD-003]] (1-981-769-11)<br />
[[HAC-001]]<br />
[[NVA-001]]
|-
| [[Belize 2]] || [[CXD90046GG]] ||
[[NVB-003]]<br />
[[NVG-001]]<br />
?[[SAD-003]] (1-981-769-21, 1-981-769-31)?<br />
[[SAE-001]]<br />
[[SAE-003]]<br />
[[SAF-003]]<br />
[[SAF-005]]
|-
| [[Baikal]] || [[CXD90042GG]] ||
[[NVB-004]]<br />
[[NVG-002]]<br />
[[NVG-004]]<br />
[[SAD-002]]<br />
[[SAE-002]]<br />
[[SAE-004]]<br />
[[SAF-004]]<br />
[[SAF-006]]
|}
== Southbridge revisions per chassis ==
{| class="wikitable sortable"
|-
! Model (chassis) !! Motherboards !! Southbridge Codename !! Oldest Manufacturing Date !! Newest Manufacturing Date
|-
| D1000 || All CVN || Aeolia || ||
|-
| 1000 || All SAA || Aeolia || ||
|-
| 1100 || All SAB || Aeolia || ||
|-
| 1200 || All SAC || Belize || 2015-10 ||
|-
| 2000 || SAD-001, SAD-003 (1-981-769-11) || Belize || 2016-04 ||
|-
| 2000 || SAD-002 || Baikal || 2016-09 ||
|-
| 2000 || SAD-003 (1-981-769-21, 1-981-769-31) || ?Belize or Belize 2? || 2016-08 ||
|-
| D7000 || HAC-001 || Belize || ||
|-
| 7000 || NVA-001 || Belize || 2017-05 ||
|-
| 2100 || SAE-001, SAE-003 || Belize 2 || 2017-11 || 2017-12
|-
| 2100 || SAE-002, SAE-004 || Baikal || 2017-06 || 2017-12
|-
| 7100 || NVB-003 || Belize 2 || 2018-05 || 2018-08
|-
| 7100 || NVB-004 || Baikal || 2017-11 ||
|-
| 2200 || SAF-003, SAF-005 || Belize 2 || 2018-06 || 2018-09
|-
| 2200 || SAF-004, SAF-006 || Baikal || 2018-03 || 2020-05
|-
| 7200 || NVG-001, NVG-003 || Belize 2 || 2018-11 || 2019-05
|-
| 7200 || NVG-002, NVG-004 || Baikal || 2018-09 || 2019-06
|}
= EMC IPL/EAP KBL Structure =
<pre>
magic:          0x%08x
version:        0x%04x
type:            0x%04x
headerSize:      0x%08x
bodySize:        0x%08x
entryPoint:      0x%08x
baseAddr:        0x%08x
</pre>
= EMC UART Debug Communication =
== Aeolia ==
{| class="wikitable"
! Command/Action !! Description !! Notes
|-
| '''_hdmi''' ||  ||
|-
| '''boot''' || || boots the console
|-
| '''bootadr''' || || <pre> cmd>bootadr
OK 00000000 FFEF 42D4 CCBE 29B9:A2
bootadr:EB
# [PSQ] boot address 00:49
OK 00000000:3A </pre>
|-
| '''bootenable''' ||  ||
|-
| '''bootmode''' ||  || <pre> cmd>bootmode
bootmode:59
# BootMode:AUTO:CF
OK 00000000:3A
cmd>bootmode 1
bootmode 1:AA
# BootMode:MANUAL:54
OK 00000000:3A
</pre>
|-
| '''buzzer''' || || beep stuff, 7 modes (?) available
|-
| '''cb''' || ||
|-
| '''cclog''' || ||  <pre> cmd>cclog
cclog:08
# ChipComm Log:OFF:AA
OK 00000000:3A
cclog 1
cclog 1:59
# ChipComm Normal Log:ON:F5
OK 00000000:3A
cclog 2
cclog 2:5A
# ChipComm Error  Log:ON:B6
OK 00000000:3A
cmd>cclog 3
cclog 3:5B
# ChipComm Normal Log:ON:F5
# ChipComm Error  Log:ON:B6
OK 00000000:3A
</pre>
|-
| '''ccom''' || || chip communications
|-
| '''ccul''' ||  ||
|-
| '''cec''' ||  ||
|-
| '''cktemprid''' ||  ||
|-
| '''csarea''' || ||
|-
| '''ddr''' || ||
|-
| '''ddrr''' || ||
|-
| ''ddrw'' || ||
|-
| '''devpm''' ||  || <pre> cmd>devpm
devpm:1C
# wlan on:F2
# hdd on:70
# usb on:8A
# bd on:06
# acdc on:CB
# pg3 on:4A
# hdmi on:E2
# gbe off:CC
# sdio off:4D
OK 00000000:3A
</pre>
|-
| '''dled''' ||  ||
|-
| '''dsarea''' ||  ||
|-
| '''ejectsw''' ||  || ps3, toggles eject switch
|-
| '''errlog''' ||  || ps3, gets error log, 32 possibilities (0-1F) <pre> errlog 0:DB
# No Code    Rtc      PowState UpCause  SeqNo    DevPm    T(SoC)  T(Exhaust):C4
# 00 C0010201 12F50C61 00FF0001 00000000 006F    0001    FFFF    2100:17
OK 00000000 C0010201 12F50C61 00FF0001 00000000 006F 0001 FFFF 2100:2E </pre>
|-
| '''etempr''' ||  || <pre> cmd>etempr get
etempr get:ED
#  Main Soc    ::E7
#          Alert Limits = 0x6000:F8
#      Alert Hysteresis = 0x0200:35
#  CriticalTempr Limits = 0x6100:34
#  Intake      ::B9
#          Alert Limits = 0x4700:FD
#      Alert Hysteresis = 0x0200:35
#  CriticalTempr Limits = 0x4800:39
#  Exhaust    ::1F
#          Alert Limits = 0x4700:FD
#      Alert Hysteresis = 0x0200:35
#  CriticalTempr Limits = 0x4800:39
OK 00000000:3A
</pre>
|-
| '''fdownmode''' || || <pre>fdownmode
fdownmode:C3
# FataldownMode:RUN:97
OK 00000000:3A
fdownmode 1
fdownmode 1:14
# FataldownMode:STOP:E8
OK 00000000:3A
</pre>
|-
| '''fduty''' ||  || <pre> fduty get
fduty get:8C
# duty=0x0100(25):67
OK 00000000:3A </pre>
|-
| '''flimit''' || || <pre> flimit get
flimit get:E5
# MainSoc    : max_duty=0x0400 min_duty=0x0100 :4A
# Environment : max_duty=0x0400 min_duty=0x00CD :DB
OK 00000000:3A </pre>
|-
| '''fmode''' || || <pre> mode
fmode:0B
# Fan Mode List:B9
# no:00 mode:AutoServo:61
# no:01 mode:Maximun:99
# no:02 mode:Minimun:98
# no:03 mode:Manual:1A
# no:04 mode:end:F4
OK 00000000:3A </pre>
|-
| '''fservo''' || || <pre> cmd>fservo get
fservo get:F5
#  MainSoc    ::E7
#  SetVal  = 0x00005000:9C
#  PGain  = 0x00000800:3F
#  IGain  = 0x00000080:38
#  ILimit  = 0x0FFFFFFF:2A
#  ULimit  = 0x0FFFFFFF:36
#  DLimit  = 0x0FFFFFFF:25
#  UPLimit  = 0x0FFFFFFF:86
#  DPLimit  = 0x0FFFFFFF:75
#  UILimit  = 0x0FFFFFFF:7F
#  DILimit  = 0x0FFFFFFF:6E
#  DifGain  = 0x00005000:DF
#  DifLimit = 0x00000900:43
#  DifDLimit = 0x00450000:87
#  MaxDduty = 0x00900000:61
#  Environment ::52
#  SetVal  = 0x00003B00:AC
#  PGain  = 0x00000500:3C
#  IGain  = 0x00000005:35
#  ILimit  = 0x0FFFFFFF:2A
#  ULimit  = 0x0FFFFFFF:36
#  DLimit  = 0x0FFFFFFF:25
#  UPLimit  = 0x0FFFFFFF:86
#  DPLimit  = 0x0FFFFFFF:75
#  UILimit  = 0x0FFFFFFF:7F
#  DILimit  = 0x0FFFFFFF:6E
#  DifGain  = 0x00000000:DA
#  DifLimit = 0x0FFFFFFF:D4
#  DifDLimit = 0x0FFFFFFF:18
#  MaxDduty = 0x0FFFFFFF:F2
OK 00000000:3A </pre>
|-
| '''fsstate''' ||  || <pre>
cmd>fsstate get
fsstate get:5A
# 0: ctempr=29.50(0x1D80), err=0xFFFFCD80, ierr=0x00000000, duty=0x0100(25):BD
# 1: ctempr=22.75(0x16C0), err=0xFFFFDBC0, ierr=0x00000000, duty=0x00CD(20):E6
OK 00000000:3A
</pre>
|-
| '''fstartup''' || ||
|-
| '''ftable''' ||  ||
|-
| '''halt''' || || ps3, halts the console
|-
| '''haltmode''' || ||
|-
| '''hdmir''' || ||
|-
| '''hdmis''' || ||
|-
| '''hdmistate''' || || <pre> cmd>hdmistate
hdmistate:C3
# == DP Video Setting ==:20
#      MVID          : 0x0:C5
#      NVID          : 0x0:C6
#      MISC 0        : 0:29
#      MISC 1        : 0:2A
#      H Total        : 0:F9
#      V Total        : 0:07
#      H Start        : 0:03
#      V Start        : 0:11
#      Hsync Width    : 0:32
#      Hsync Porality : High Active:F2
#      Vsync Height  : 0:79
#      Vsync Porality : High Active:00
#      Video Width    : 0:24
#      Video Height  : 0:5D
# Wait Power On State.:31
OK 00000000:3A
</pre>
|-
| '''hdmiw''' || ||
|-
| '''help''' || || <pre> help:A9
# ANY    "R16":A8
# ANY    "R32":A6
# ANY    "R8":79
# ANY    "W16":AD
# ANY    "W32":AB
# ANY    "W8":7E
# ANY    "_hdmi":F0
# ANY    "boot":A3
# ANY    "bootadr":DA
# ANY    "bootenable":0A
# ANY    "bootmode":48
# ANY    "buzzer":91
# ANY    "cb":B4
# ANY    "cclog":F7
# ANY    "ccul":96
# ANY    "cec":1A
# ANY    "cktemprid":B2
# ANY    "combuf":6B
# ANY    "comlog":70
# ANY    "csarea":5E
# ANY    "ddr":29
# ANY    "ddrc":8C
# ANY    "ddrr":9B
# ANY    "ddrw":A0
# ANY    "devpm":0B
# ANY    "dled":88
# ANY    "dsarea":5F
# ANY    "ejectsw":E4
# ANY    "errlog":7A
# ANY    "etempr":7C
# ANY    "fdownmode":B2
# ANY    "fduty":1B
# ANY    "flimit":74
# ANY    "fmode":FA
# ANY    "fservo":84
# ANY    "fsstate":E9
# ANY    "fstartup":68
# ANY    "getmacadr":97
# ANY    "halt":98
# ANY    "haltmode":3D
# ANY    "hdmir":03
# ANY    "hdmis":04
# ANY    "hdmistate":B2
# ANY    "hdmiw":08
# ANY    "help":98
# ANY    "mbu":33
# ANY    "mduty":22
# ANY    "nvscsum":FE
# ANY    "nvsinit":FA
# ANY    "nvsl2sw":CE
# ANY    "osarea":6A
# ANY    "osbootparam":96
# ANY    "osdebuginfo":84
# ANY    "osstate":F2
# ANY    "pcie":90
# ANY    "pdarea":5C
# ANY    "powcount":6E
# ANY    "powersw":06
# ANY    "powupcause":3B
# ANY    "qafinfo":D3
# ANY    "r16":C8
# ANY    "r32":C6
# ANY    "r8":99
# ANY    "resetsw":FC
# ANY    "rtc":38
# ANY    "runseq":8D
# ANY    "s3state":B6
# ANY    "sb":C4
# ANY    "sbnvs":1B
# ANY    "scfupdbegin":79
# ANY    "scfupddl":44
# ANY    "scfupdend":AB
# ANY    "scnvsinit":D0
# ANY    "scpdis":75
# ANY    "screset":E8
# ANY    "scversion":CB
# ANY    "sdkversion":37
# ANY    "sdnvs":1D
# ANY    "smlog":11
# ANY    "socdmode":3D
# ANY    "socuid":76
# ANY    "spoff":0D
# ANY    "spon":AF
# ANY    "sqlog":15
# ANY    "ssbdis":77
# ANY    "startwd":F8
# ANY    "state":10
# ANY    "stinfo":82
# ANY    "stopwd":90
# ANY    "stwb":AF
# ANY    "subsysid":65
# ANY    "subsysinfo":44
# ANY    "syspowdown":5C
# ANY    "task":A2
# ANY    "tempr":17
# ANY    "temprlog":59
# ANY    "testpcie":50
# ANY    "thrm":AA
# ANY    "uareq1":3E
# ANY    "uareq2":3F
# ANY    "version":F5
# ANY    "vshinfo":EC
# ANY    "w16":CD
# ANY    "w32":CB
# ANY    "w8":9E
# ANY    "wsc":3C
OK 00000000:3A </pre>
|-
| '''mbu''' || ||
|-
| '''mduty''' || || <pre>
cmd>mduty get
mduty get:93
#  MainSoc    : duty=0x0000(0):F3
#  Environment : duty=0x0000(0):5E
OK 00000000:3A
</pre>
|-
| '''nvscsum''' || || <pre> cmd>nvscsum
OK 00000000 FFEF 42D4 CCBE 29B9:A2
nvscsum:0F </pre>
|-
| '''nvsinit''' || ||
|-
| '''osarea''' || ||
|-
| '''osstate''' || ||
|-
| '''pcie''' || || <pre>
cmd>pcie
pcie:A1
# <PCIe Debug>:05
#  PHY Link                          : Up:A1
#  Data Link                          : Up:0A
# :43
# <PCIe Link Control and Status>:A4
#  Active State Link PM              : Disabled:BD
#  Read Completion Boundary(RCB)      : 64byte:FD
#  Retrain Link                      : 1:71
#  Enable Clock Power Management      : Disable:EE
#  Hardware Autonomous Width          : Enable:0C
#  Link Bandwidth Management Interrupt: Disable:DE
#  Link Autonomous Bandwidth Interrupt: Disable:1B
#  Link Speed                        : Gen1:E7
#  Link Width                        : x4:57
#  Link Traing                        : Done:76
# :43
# <Calib Value>:B5
#  LANE 0                            : 0x60:FB
#  LANE 1                            : 0x5E:10
#  LANE 2                            : 0x5D:10
#  LANE 3                            : 0x5C:10
# :43
# <PCIe Device Status>:12
#  Correctable Error                  : Yes:DE
#  Non-Fatal Error                    : No:84
#  Fatal Error                        : No:AC
#  Unsupported Request Detected      : Yes:E2
OK 00000000:3A
</pre>
|-
| '''pdarea''' || ||
|-
| '''powersw''' || || ps3, toggles power switch
|-
| '''powupcause''' || || <pre> cmd>powupcause
powupcause:4C
# 04000000 02 00 02 00 00:4B
OK 00000000:3A </pre>
|-
| '''r16''' || ||
|-
| '''R16''' || ||
|-
| '''R32''' || ||
|-
| '''r32''' || ||
|-
| '''R8''' || ||
|-
| '''r8''' || ||
|-
| '''resetsw''' || || ps3, toggles reset switch
|-
| '''rtc''' || || <pre> cmd>rtc
rtc:49
# RTC Counter            : 318078913:DE
# RTC Status(0x000001FC) : OK:87
OK 00000000 12F57FC1 000001FC:F3 </pre>
|-
| '''sb''' || || <pre> sb
sb:D5
# [Active bank] : Second:E9
OK 00000000:3A
</pre>
|-
| '''sbnvs''' || || <pre> cmd>sbnvs
sbnvs:2C
# sbnvs : [partitin number]:B5
# [UCMD] Arguments err.:91
NG F0000001:4C </pre>
|-
| '''scfupdbegin''' || ||
|-
| '''scfupddl''' || ||
|-
| '''scfupdend''' || ||
|-
| '''scnvsinit''' || ||
|-
| '''scpdis''' || ||
|-
| '''screset''' || || ps3, resets syscon
|-
| '''scversion''' || || gets syscon version <pre> cmd>scversion
scversion:DC
# 1.0.0 ET r1808  p1:2D
OK 00000000 C1ET 0001 0000 0000 0710 0001:D1 </pre>
|-
| '''sdnvs''' || || <pre> cmd>sdnvs
sdnvs:2E
# sdnvs : [partitin number] [bank number] :F4
# [UCMD] Arguments err.:91
NG F0000001:4C </pre>
|-
| '''smlog''' || || <pre> cmd>smlog
smlog:22
# Packet Log:OFF:F2
OK 00000000:3A
cmd>smlog 1
smlog 1:73
# Packet Log:ON:B4
OK 00000000:3A
</pre>
|-
| '''socdmode''' || || <pre> cmd>socdmode
socdmode:4E
# [PSQ] Soc download mode : 0:1B
OK 00000000:3A </pre>
|-
| '''socuid''' || || gets socuid, also found in NVS
|-
| '''ssbdis''' || || <pre> cmd>ssbdis
ssbdis:88
# [PSQ] boot disable 00:37
OK 00000000:3A </pre>
|-
| '''startwd''' || ||
|-
| '''state''' || || <pre> cmd>state
state:21
# system:SSC_SYSTEMSTATE_SOC_UP_IDLE:95
OK 00000000 0005 FF:CB </pre>
|-
| '''stinfo''' || || <pre> cmd>stinfo
stinfo:93
# Updated Sector Adr = 0x1C5000 (table = 0x02 i=0,j=1):29
OK 00000000:3A </pre>
|-
| '''stopwd''' || ||
|-
| '''stwb''' || ||
|-
| '''syspowdown''' || || shutsdown system
|-
| '''tempr''' || || <pre> cmd>tempr get
tempr get:88
# get all:DC
#  MainSoc    : t=30.25(0x1E40):83
#  Intake      : Disable:8D
#  Exhaust    : t=24.00(0x1800):A6
OK 00000000 1E40 FFFF 1800:55 </pre>
|-
| '''testpcie''' || ||
|-
| '''thrm''' || ||
|-
| '''uareq1''' || || command to gain more privileges, rsa
|-
| '''uareq2''' || || command to gain more privileges, rsa
|-
| '''version''' || || ps3, gets emc version <pre> cmd>version
version:06
# 1.19.0 E r4336 :51
OK 00000000 E1E 0001 0013 0000 10F0:B1 </pre>
|-
| '''W16''' || ||
|-
| '''w16''' || ||
|-
| '''W32''' || ||
|-
| '''w32''' || ||
|-
| '''w8''' || ||
|-
| '''w8''' || ||
|-
| '''W8''' || ||
|-
| '''wsc''' || ||
|-
|}
See also:
* [https://fail0verflow.com/blog/2018/ps4-aeolia/].
* [https://jaicrab.org/?&a=Ps4/Tools/UART]
* [https://www.psdevwiki.com/ps3/Syscon_Hardware#Syscon_Externalised_Ports]
* [https://www.psdevwiki.com/ps3/System_Controller_Firmware#Internal_commands]
== Southbridge Patches ==
=== God Mode (All Commands Unlocked) ===
* Change ALL instances of 03 00 FD 00 to 0F 00 FD 00
* Change ALL instances of 07 00 FD 00 to 0F 00 FD 00
* Be extremely careful as this might brick your console if you try weird commands!




{{Motherboard Components}}
* TODO: Proper Table
<noinclude>
[[Category:Main]]
</noinclude>
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