[Hardware Hacking General] AdamOutler:
I think some of that UART may be mislabeled. We must find out what is triggering the I2C bus

1
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Samsung Primitive Bootloader (PBL) v3.0
Copyright (C) Samsung Electronics Co., Ltd. 2006-2010
-----------------------------------------------------------

+n1stVPN 2688
+nPgsPerBlk 64
PBL found bootable SBL: Partition(3).

Set cpu clk. from 400MHz to 800MHz.
OM=0x9, device=OnenandMux(Audi)
IROM e-fused - Non Secure Boot Version.

-----------------------------------------------------------
Samsung Secondary Bootloader (SBL) v3.0
Copyright (C) Samsung Electronics Co., Ltd. 2006-2010

Board Name: ARIES REV 03
Build On: Feb 1 2011 10:54:21
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Re_partition: magic code(0x0)
[PAM: ] ++FSR_PAM_Init
[PAM: ] OneNAND physical base address : 0xb0000000
[PAM: ] OneNAND virtual base address : 0xb0000000
[PAM: ] OneNAND nMID=0xec : nDID=0x50
[PAM: ] --FSR_PAM_Init
fsr_bml_load_partition: pi->nNumOfPartEntry = 12
partitions loading success
board partition information update.. source: 0x0
Now Read Images - ID : 1
.Done.
read 1 units.
==== PARTITION INFORMATION ====
ID : IBL+PBL (0x0)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 0
NO_UNITS : 1
===============================
ID : PIT (0x1)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 1
NO_UNITS : 1
===============================
ID : EFS (0x14)
ATTR : RW STL SLC (0x1101)
FIRST_UNIT : 2
NO_UNITS : 40
===============================
ID : SBL (0x3)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 42
NO_UNITS : 5
===============================
ID : SBL2 (0x4)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 47
NO_UNITS : 5
===============================
ID : PARAM (0x15)
ATTR : RW STL SLC (0x1101)
FIRST_UNIT : 52
NO_UNITS : 20
===============================
ID : KERNEL (0x6)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 72
NO_UNITS : 30
===============================
ID : RECOVERY (0x7)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 102
NO_UNITS : 30
===============================
ID : FACTORYFS (0x16)
ATTR : RW STL SLC (0x1101)
FIRST_UNIT : 132
NO_UNITS : 1146
===============================
ID : DBDATAFS (0x17)
ATTR : RW STL SLC (0x1101)
FIRST_UNIT : 1278
NO_UNITS : 536
===============================
ID : CACHE (0x18)
ATTR : RW STL SLC (0x1101)
FIRST_UNIT : 1814
NO_UNITS : 140
===============================
ID : MODEM (0xb)
ATTR : RO SLC (0x1002)
FIRST_UNIT : 1954
NO_UNITS : 50
===============================
loke_init: j4fs_open success..
load_lfs_parameters valid magic code and version.
reading nps status file is successfully!.
nps status=0x504d4f43
load_debug_level reading debug level from file successfully(0x574f4c44).
init_fuel_gauge: vcell = 4161mV, soc = 100
check_quick_start_condition_with_charger- Voltage: 4161.25000, Linearized[69/84/99], Capacity: 100
quick_start- quick start is executed!
init_fuel_gauge: vcell = 4185mV, soc = 99, rcomp = d01f
EXT_I2C(0) -> No ACK
EXT_I2C(0) -> No ACK
EXT_I2C(0) -> No ACK
reading nps status file is successfully!.
nps status=0x504d4f43
PMIC_IRQ1 = 0x0
PMIC_IRQ2 = 0x0
PMIC_IRQ3 = 0x0
PMIC_IRQ4 = 0x0
PMIC_STATUS1 = 0x40
PMIC_STATUS2 = 0x2c
get_debug_level current debug level is 0x574f4c44.
aries_process_platform: Debug Level Low
keypad_scan: key value ----------------->= 0x0
CONFIG_ARIES_REV:48 , CONFIG_ARIES_REV03:48
EXT_I2C(0) -> No ACK
EXT_I2C(0) -> No ACK
EXT_I2C(0) -> No ACK
check_download: micorusb_status1 = 4ff, key_value = 0
DISPLAY_PATH_SEL[MDNIE 0x1]is on
MDNIE setting Init start!!
vsync interrupt is off
video interrupt is off
[fb0] turn on
MDNIE setting Init end!!
set_boot_mode: boot mode = 1
aries_process_platform: final s1 booting mode = 1
aries_check_vf_status() ----- aver_vf_adc : 2710
main: booting stop and power off..
loke_exit: bye~ bye!
aries_power_off: TA or USB connected
aries_power_off: WDT reset

I2C stands for inter-integrated circuit. The I2C bus is the most powerful one in the phone. It would be entirely hardware driven and there must be a way to grab ahold of that bus. If we can get our hands on that, then we can reprogram the one-nand. I really belive that is the key.

I'm having problems reading that assembly language. Can you tell me what some of those handshakes are looking for? Any mention of baud rates? I2c would be at 3 or 6 mbps.

btw... I started a thread here to draw some captivate attention. http://xdaforums.com/showthread.php?p=13516608