[Samsung Galaxy Tab Plus] jackqin:
I recently installed ubuntu on GT-P6210, it works fine until i tried to port some drivers from Linaro Origen source, as I couldnt see anything from bootloaders and kernel, it's hard to get off the reboot loop,

So I made a serial cable, thanks for Technomancer's post here:http://xdaforums.com/showthread.php?t=1010314

and the following are those outputs from bootloaders, maybe it's helpful to someone:

Welcome to Samsung Primitive Bootloader.

build time: Jan 5 2012 22:13:07

current time: 0/1/3 0:9:30

[set_mmc_ocr] Sector Mode

[hsmmc_init] MMC card is detected

Product Name : MAG4FA

<display_card_info:1009> ext_csd

<display_card_info:1011>card_size: 15028

Total Card Size: 15029 MByte

mmc_init: card initialization completed!

pbl found bootable sbl in #49152.

jump to sbl 0x4d400000.

init_fuel_gauge - Start!!

init_fuel_gauge - CGAIN=0x3cd5

check_battery_type: fuel_temp = 34, adc_temp = 40

set_fuel_gauge_parameter: battery_type = 1

init_fuel_gauge - Already initialized!! (SDI type)

fuel_gauge_test_read - addr(0x00), data(0x0000)

fuel_gauge_test_read - addr(0x01), data(0xff00)

fuel_gauge_test_read - addr(0x02), data(0x7f80)

fuel_gauge_test_read - addr(0x03), data(0xff01)

fuel_gauge_test_read - addr(0x04), data(0x0000)

fuel_gauge_test_read - addr(0x05), data(0x1e4c)

fuel_gauge_test_read - addr(0x06), data(0x5f6c)

fuel_gauge_test_read - addr(0x07), data(0x4d58)

fuel_gauge_test_read - addr(0x08), data(0x224c)

fuel_gauge_test_read - addr(0x09), data(0xca7a)

fuel_gauge_test_read - addr(0x0a), data(0xf5f3)

fuel_gauge_test_read - addr(0x0b), data(0xec06)

fuel_gauge_test_read - addr(0x0d), data(0x48e6)

fuel_gauge_test_read - addr(0x0e), data(0x5f5f)

fuel_gauge_test_read - addr(0x0f), data(0x1e4d)

fuel_gauge_test_read - addr(0x10), data(0x1fc0)

fuel_gauge_test_read - addr(0x11), data(0x0bfb)

fuel_gauge_test_read - addr(0x12), data(0x7d5a)

fuel_gauge_test_read - addr(0x14), data(0x021f)

fuel_gauge_test_read - addr(0x16), data(0x2055)

fuel_gauge_test_read - addr(0x17), data(0x0d70)

fuel_gauge_test_read - addr(0x18), data(0x290a)

fuel_gauge_test_read - addr(0x19), data(0xc859)

fuel_gauge_test_read - addr(0x1a), data(0x2716)

fuel_gauge_test_read - addr(0x1b), data(0xd099)

fuel_gauge_test_read - addr(0x1c), data(0x23e9)

fuel_gauge_test_read - addr(0x1d), data(0x2210)

fuel_gauge_test_read - addr(0x1e), data(0x0520)

fuel_gauge_test_read - addr(0x1f), data(0x1def)

fuel_gauge_test_read - addr(0x21), data(0x0092)

fuel_gauge_test_read - addr(0x23), data(0x2934)

fuel_gauge_test_read - addr(0x24), data(0x1400)

fuel_gauge_test_read - addr(0x25), data(0x2305)

fuel_gauge_test_read - addr(0x27), data(0x6d46)

fuel_gauge_test_read - addr(0x29), data(0x87a4)

fuel_gauge_test_read - addr(0x2a), data(0x506b)

fuel_gauge_test_read - addr(0x2b), data(0x0010)

fuel_gauge_test_read - addr(0x2c), data(0xe3e1)

fuel_gauge_test_read - addr(0x2d), data(0x290e)

fuel_gauge_test_read - addr(0x2e), data(0x3cd5)

fuel_gauge_test_read - addr(0x2f), data(0x0000)

fuel_gauge_test_read - addr(0x32), data(0x0800)

fuel_gauge_test_read - addr(0x33), data(0x0000)

fuel_gauge_test_read - addr(0x36), data(0x0100)

fuel_gauge_test_read - addr(0x37), data(0x05e0)

fuel_gauge_test_read - addr(0x38), data(0x0089)

fuel_gauge_test_read - addr(0x39), data(0x132a)

fuel_gauge_test_read - addr(0x3a), data(0x1458)

fuel_gauge_test_read - addr(0x3b), data(0x057f)

fuel_gauge_test_read - addr(0x3d), data(0x1008)

fuel_gauge_test_read - addr(0x3f), data(0xe000)

fuel_gauge_test_read - addr(0xfb), data(0xcd7e)

fuel_gauge_test_read - addr(0xff), data(0x47ae)

fuel_gauge_read_vfsoc : VFSOC(71), data(0x47ae)

fuel_gauge_read_vcell : VCELL(4052), data(0xca9c)

calculate_sdi_table_soc: Get table SOC in case of not charging!!

calculate_sdi_table_soc: vcell(4052), table_soc(91)

[VFSOC_Patch] differ(3), table_soc(91), vfsoc(71)

fuel_gauge_read_vfsoc : VFSOC(71), data(0x47ae)

fuel_gauge_read_vcell : VCELL(4052), data(0xca9c)

calculate_sdi_table_soc: Get table SOC in case of not charging!!

calculate_sdi_table_soc: vcell(4052), table_soc(91)

[VFSOC_Patch] differ(3), table_soc(91), vfsoc(71)

fuel_gauge_read_vfsoc : VFSOC(71), data(0x47ae)

fuel_gauge_read_vcell : VCELL(4052), data(0xca9c)

fuel_gauge_read_soc : SOC(95), data(0x5f6c)

calculate_sdi_table_soc: Get table SOC in case of not charging!!

calculate_sdi_table_soc: vcell(4052), table_soc(91)

fuel_gauge_read_vfsoc : VFSOC(71), data(0x47ae)

fuel_gauge_read_soc : SOC(95), data(0x5f6c)

fuel_gauge_read_soc : SOC(95), data(0x5f6c)

init_microusb_ic: MUIC: CONTROL1:0x3f

init_microusb_ic: MUIC: CONTROL1:0x3f

init_microusb_ic: MUIC: CONTROL2:0x3a

init_microusb_ic: MUIC: CONTROL2:0x3a

Secondary Bootloader v3.1 version.

Copyright (C) 2011 System S/W Group. Samsung Electronics Co., Ltd.

Board: P4 REV 02 / Jan 5 2012 22:13:13

current time: 0/1/3 0:9:31

booting code=0x0

[set_mmc_ocr] Sector Mode

[hsmmc_init] MMC card is detected

Product Name : MAG4FA

CID:150100 4d414734 4641196e c10e81f

<display_card_info:1043> ext_csd

<display_card_info:1045>card_size: 15028

Total Card Size: 15029 MByte

Total Sector Count: 30777344

MoviNand Initialization Complete!

===== PARTITION INFORMATION =====

ID : GANG (0x0)

DEVICE : MMC

FIRST UNIT : 0

NO. UNITS : 0

=================================

ID : BOOT (0x1)

DEVICE : MMC

FIRST UNIT : 0

NO. UNITS : 0

=================================

ID : EFS (0x4)

DEVICE : MMC

FIRST UNIT : 8192

NO. UNITS : 40960

=================================

ID : SBL1 (0x2)

DEVICE : MMC

FIRST UNIT : 49152

NO. UNITS : 2560

=================================

ID : SBL2 (0x3)

DEVICE : MMC

FIRST UNIT : 53248

NO. UNITS : 2560

=================================

ID : PARAM (0x5)

DEVICE : MMC

FIRST UNIT : 57344

NO. UNITS : 16384

=================================

ID : KERNEL (0x6)

DEVICE : MMC

FIRST UNIT : 73728

NO. UNITS : 16384

=================================

ID : RECOVERY (0x7)

DEVICE : MMC

FIRST UNIT : 90112

NO. UNITS : 16384

=================================

ID : CACHE (0x8)

DEVICE : MMC

FIRST UNIT : 106496

NO. UNITS : 409600

=================================

ID : FACTORYFS (0xa)

DEVICE : MMC

FIRST UNIT : 516096

NO. UNITS : 1572864

=================================

ID : DATAFS (0xb)

DEVICE : MMC

FIRST UNIT : 2088960

NO. UNITS : 27615232

=================================

ID : HIDDEN (0xc)

DEVICE : MMC

FIRST UNIT : 29704192

NO. UNITS : 1048576

=================================

ID : FOTA (0xd)

DEVICE : MMC

FIRST UNIT : 30752768

NO. UNITS : 16384

=================================

loke_init: j4fs_open..fsd_reclaim 1287: MST is not recognized(mst.magic=0x72726624)

fsd_reclaim 1288: MST is not recognized

fsd_reclaim 1603: Error(nErr=0x00000000)

fsd_reclaim 1608: j4fs_rw_start is set to default value(128KB)

j4fs_open 154: Error(nErr=0x40000000)

failed

init_ddi_data: usable ddi data.

j4fs_read_file_bootloader 356: j4fs panic

nps status file does not exist..

nps status is incorrect!! set default status.(completed)

nps status=0x504d4f43

PMIC_IRQSRC = 0x00

PMIC_IRQ1 = 0x00

PMIC_IRQ2 = 0x08

PMIC_IRQ3 = 0x00

PMIC_IRQ4 = 0x11

PMIC_STATUS1 = 0x00

PMIC_STATUS2 = 0x16

PMIC_STATUS3 = 0x03

PMIC_STATUS4 = 0x00

bootloader base address=0x4d400000

LPDDR0 1st. cached=0x40000000, size=0xe400000

LPDDR0 non-cached=0x4e400000, size=0xa00000

LPDDR0 2nd. cached=0x4ee00000, size=0x1200000

RST_STAT = 0x20000000

get_hwrev() = 11

board_process_platform: MAGIC 0 at 40004000!

check_reboot: INFORM3 = 12345670

save param.blk, size: 5268

j4fs_write_file_bootloader 185: j4fs panic

mbcctrl = d4

mbcctrl = 14

mbcctrl = 14

fuel_gauge_read_vcell : VCELL(4051), data(0xca98)

pm_check_low_battery: Now, Start Booting...

check_30pin_cable: ch4. ADC value = 4095

check_30pin_cable: ch4. ADC value = 4088

check_30pin_cable: ch4. ADC value = 4093

microusb_get_attached_device: STATUS1:0x3f, 2:0x00

hw_pm_status: chg_status = 0, INFORM2 = 12345678

AST_POWERON..

......kernel is non signed binary.

div:15, FB_SOURCE_CLOCK:800000000, FB_PIXEL_CLOCK:53988360

mDNIe is enabled

check_lcdtype : adc=1135, lctype=1

Autoboot (0 seconds) in progress, press any key to stop

boot_kernel: debug level low!

checkbit (00000000)

......kernel (id 0) is non signed binary.

ATAG_CORE: 5 54410001 0 0 0

MEMCONFIG: 20e01323 20e01323

ATAG_MEM: 4 54410002 10000000 40000000

ATAG_MEM: 4 54410002 10000000 50000000

ATAG_MEM: 4 54410002 10000000 60000000

ATAG_MEM: 4 54410002 10000000 70000000

ATAG_SERIAL: 4 54410006 c10e81f 4641196e

ATAG_REVISION: 3 54410007 b

ATAG_CMDLINE: 47 54410009 'console=ttySAC2,115200 loglevel=4 sec_debug.enable=0 sec_debug.enable_user=0 c1_watchdog.sec_pet=5 sec_log=0x100000@0x5eb00000 s3cfb.bootloaderfb=0x5ec00000 lcdtype=1 consoleblank=0 lpj=3981312 vmalloc=144m an'

ATAG_NONE: 0 0

Starting kernel at 0x40008000...

default env settings:

SBL> printenv

PARAM Rev 1.3

SERIAL_SPEED : 7

LOAD_RAMDISK : 0

BOOT_DELAY : 0

LCD_LEVEL : 97

SWITCH_SEL : 1

PHONE_DEBUG_ON : 0

LCD_DIM_LEVEL : 0

LCD_DIM_TIME : 6

MELODY_MODE : 1

REBOOT_MODE : 0

NATION_SEL : 0

LANGUAGE_SEL : 0

SET_DEFAULT_PARAM : 0

FLASH_LOCK_STATUS : 1

PARAM_INT_14 : 0

VERSION : I9000XXIL

CMDLINE : console=ttySAC2,115200 loglevel=4

DELTA_LOCATION : /mnt/rsv

PARAM_STR_3 :

PARAM_STR_4 :