Thank you coplate, I didn't know this and it was quite helpful in getting the kernel boot log (which was not otherwise printed out, although I managed to get a near identical readout by booting using the diags kernel). It looks like this:
Code:
U-Boot 2009.08-lab126 (Apr 23 2014 - 01:01:24)
CPU: Freescale i.MX6 family TO0.0 at 996 MHz
Temperature: 30 C, calibration data 0x5654e35f
mx6sl pll1: 996MHz
mx6sl pll2: 528MHz
mx6sl pll3: 480MHz
mx6sl pll8: 50MHz
ipg clock : 66000000Hz
ipg per clock : 66000000Hz
uart clock : 80000000Hz
cspi clock : 60000000Hz
ahb clock : 132000000Hz
axi clock : 198000000Hz
emi_slow clock: 22000000Hz
ddr clock : 396000000Hz
usdhc1 clock : 198000000Hz
usdhc2 clock : 198000000Hz
usdhc3 clock : 198000000Hz
usdhc4 clock : 198000000Hz
MMC: FSL_ESDHC: 0,FSL_ESDHC: 1,FSL_ESDHC: 2
Board: Pinot WFO 2GB
Boot Reason: [ POR ]
Boot Device: NAND
Board Id: XXXX
S/N: XXXXXX
I2C: ready
DRAM: 256 MB
Using default environment
In: serial
Out: serial
Err: serial
Quick Memory Test 0x80000000, 0xfff0000
POST done in 59 ms
Battery voltage: 3868 mV
Hit any key to stop autoboot: 0
## Booting kernel from Legacy Image at 80800000 ...
Image Name: Linux-3.0.35-lab126
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2426044 Bytes = 2.3 MB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
[ 0.095374]
[ 0.265782] LPDDR2 MfgId: 0x1 [Samsung]
[ 0.269678]
[ 0.269681] just text: vaddr 0xc011e9bc, va 0xc011e200 pa 0x801000c3 attr 0x6
[ 0.278148]
[ 0.278151] nmx6sl_wfi_iram: vaddr 0xd081a000, va 0xd081a200 pa 0x902043 attr 0x2
[ 0.287122]
[ 0.287124] mx6sl_ddr: vaddr 0xd0852000, va 0xd0852200 pa 0x903043 attr 0x2
[ 0.295583]
[ 0.295585] mx6sl_iomux: vaddr 0xf40e0000, va 0xf40e0200 pa 0x20110c3 attr 0x149
[ 0.304478]
[ 0.304481] ANATOP: vaddr 0xf40c8000, va 0xf40c8200 pa 0x20110c3 attr 0x149
[ 0.312939]
[ 0.312941] CCM: vaddr 0xf40c4000, va 0xf40c4200 pa 0x20110c3 attr 0x149
[ 0.321138]
[ 0.321140] MMDC_P0: vaddr 0xf41b0000, va 0xf41b0200 pa 0x21110c3 attr 0x149
[ 0.329685]
[ 0.329688] L2: vaddr 0xf2a02000, va 0xf2a02200 pa 0xa02043 attr 0x149
[ 0.337710]
[ 0.337713] arm perif: vaddr 0xf2a00000, va 0xf2a00200 pa 0xa00043 attr 0x149
[ 0.367437] max77696-adc max77696-adc.0: adc conversion timed out
[ 0.427948] max77696-adc max77696-adc.0: adc conversion timed out
3.0.35-lab126 #1 Wed Apr 23 01:26:01 PDT 2014 armv7l
Press [ENTER] for recovery menu... 0 /|/
=== kernel printk buffer (17617 bytes) ===
<5>[ 0.000000] Linux version 3.0.35-lab126 (jenkins-official@sjc10-jbuild10) (collect2: ld returned 1 exit status) #1 Wed Apr 23 01:26:01 PDT 2014
<4>[ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
<4>[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
<4>[ 0.000000] Machine: Freescale i.MX 6SoloLite based Wario Board
<6>[ 0.000000] Will try to place printk log at 8fffc000
<4>[ 0.000000] Memory policy: ECC disabled, Data cache writeback
<6>[ 0.000000] CPU identified as i.MX6SoloLite, silicon rev 1.2
<7>[ 0.000000] On node 0 totalpages: 65536
<7>[ 0.000000] free_area_init_node: node 0, pgdat c04e0f2c, node_mem_map c2000000
<7>[ 0.000000] DMA zone: 64 pages used for memmap
<7>[ 0.000000] DMA zone: 0 pages reserved
<7>[ 0.000000] DMA zone: 8128 pages, LIFO batch:0
<7>[ 0.000000] Normal zone: 448 pages used for memmap
<7>[ 0.000000] Normal zone: 56896 pages, LIFO batch:15
<7>[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
<7>[ 0.000000] pcpu-alloc: [0] 0
<4>[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
<5>[ 0.000000] Kernel command line: rootwait log_pos_goal=0x8fffc000 console=ttymxc0,115200 root=/dev/mmcblk0p1 ro ip=off quiet video=mxcepdcfb:E60,bpp=8,x_mem=3M
<4>[ 0.000000] Prink buffer will be relocated to physical address: 8fff2000
<6>[ 0.000000] log_buf_len: 32768
<6>[ 0.000000] early log buf free: 31341(95%)
<6>[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
<6>[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
<6>[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
<6>[ 0.000000] Memory: 256MB = 256MB total
<5>[ 0.000000] Memory: 254640k/254640k available, 7504k reserved, 0K highmem
<5>[ 0.000000] Virtual kernel memory layout:
<5>[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
<5>[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
<5>[ 0.000000] DMA : 0xfde00000 - 0xffe00000 ( 32 MB)
<5>[ 0.000000] vmalloc : 0xd0800000 - 0xf2000000 ( 536 MB)
<5>[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
<5>[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
<5>[ 0.000000] .init : 0xc0008000 - 0xc010c000 (1040 kB)
<5>[ 0.000000] .text : 0xc010c000 - 0xc04ae000 (3720 kB)
<5>[ 0.000000] .data : 0xc04ae000 - 0xc04e1a60 ( 207 kB)
<5>[ 0.000000] .bss : 0xc04e1a84 - 0xc05072a0 ( 151 kB)
<6>[ 0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
<6>[ 0.000000] NR_IRQS:624
<6>[ 0.000000] MXC GPIO hardware
<6>[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
<6>[ 0.000000] arm_max_freq=1GHz
<6>[ 0.000000] MXC_Early serial console at MMIO 0x2020000 (options '115200')
<6>[ 0.000000] bootconsole [ttymxc0] enabled
<6>[ 0.000000] Console: colour dummy device 80x30
<6>[ 0.000267] Calibrating delay loop... 1987.37 BogoMIPS (lpj=9936896)
<6>[ 0.060112] pid_max: default: 32768 minimum: 301
<6>[ 0.060375] Mount-cache hash table entries: 512
<6>[ 0.060736] CPU: Testing write buffer coherency: ok
<6>[ 0.060877] hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
<6>[ 0.067851] print_constraints: dummy:
<6>[ 0.068018] NET: Registered protocol family 16
<6>[ 0.072030] print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal
<6>[ 0.072324] print_constraints: vddcore: 725 <--> 1300 mV at 1475 mV fast normal
<6>[ 0.072625] print_constraints: vddsoc: 725 <--> 1300 mV at 1475 mV fast normal
<6>[ 0.072924] print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal
<6>[ 0.073263] print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal
<6>[ 0.073574] print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal
<4>[ 0.075164] LAB126 Board id - XXXXXX
<6>[ 0.079361] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
<6>[ 0.079375] hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.
<6>[ 0.079389] hw-breakpoint: maximum watchpoint size is 4 bytes.
<6>[ 0.079407] L310 cache controller enabled
<6>[ 0.079418] l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x02030000, Cache size: 262144 B
<6>[ 0.087864] bio: create slab <bio-0> at 0
<6>[ 0.091693] max77696> regulator init
<6>[ 0.092595] spi_imx imx6q-ecspi.0: probed
<6>[ 0.092966] usbcore: registered new interface driver usbfs
<6>[ 0.093083] usbcore: registered new interface driver hub
<6>[ 0.093219] usbcore: registered new device driver usb
<4>[ 0.095345] Reboot Reason - Metric Framework Reporting
<6>[ 0.095360] kernel: kernel_metric_generic,0,counter,event_recorder,ercflags,SFT_PRSTRT,1,
<4>[ 0.095368] Reboot Reason - Legacy Metric Reporting
<3>[ 0.095374]
<6>[ 0.098444] MAX77696 TOPSYS 1.0.0 Installed
<6>[ 0.101346] max77696-gpio max77696-gpio.0: gpio#0 -- -- func-0 in
<6>[ 0.102826] max77696-gpio max77696-gpio.0: gpio#1 -- -- func--1 in
<6>[ 0.104299] max77696-gpio max77696-gpio.0: gpio#3 -- -- func-0 in
<6>[ 0.106162] MAX77696 GPIO Driver 1.0.0 Installed
<4>[ 0.107103] buck mode: 4
<4>[ 0.107847] buck mode: 4
<6>[ 0.108796] print_constraints: max77696_buck1: 900 <--> 1300 mV at 1250 mV fast normal idle standby
<4>[ 0.109337] buck mode: 4
<6>[ 0.110364] print_constraints: max77696_buck1dvs: 600 <--> 1300 mV at 900 mV fast normal idle standby
<4>[ 0.110935] buck mode: 4
<4>[ 0.111678] buck mode: 4
<6>[ 0.112625] print_constraints: max77696_buck2: 900 <--> 1300 mV at 1200 mV fast normal idle standby
<4>[ 0.113148] buck mode: 4
<6>[ 0.114099] print_constraints: max77696_buck2dvs: 600 <--> 1300 mV at 900 mV fast normal idle standby
<6>[ 0.114638] print_constraints: max77696_buck3: 600 <--> 3387 mV at 1300 mV fast normal idle standby
<4>[ 0.115349] buck mode: 4
<4>[ 0.116091] buck mode: 4
<6>[ 0.116832] print_constraints: max77696_buck4: 1200 mV fast normal idle standby
<4>[ 0.117357] buck mode: 4
<6>[ 0.118307] print_constraints: max77696_buck5: 600 <--> 3387 mV at 1800 mV fast normal idle standby
<4>[ 0.118839] buck mode: 4
<6>[ 0.119787] print_constraints: max77696_buck6: 600 <--> 3387 mV at 3200 mV fast normal idle standby
<6>[ 0.119827] MAX77696 Buck Regulators Driver 1.0.1 Installed
<6>[ 0.120724] print_constraints: max77696_ldo1: 800 <--> 3950 mV at 3300 mV normal idle standby
<6>[ 0.121290] print_constraints: max77696_ldo2: 800 <--> 3950 mV at 3000 mV normal idle standby
<6>[ 0.121844] print_constraints: max77696_ldo3: 800 <--> 3950 mV at 2500 mV normal idle standby
<6>[ 0.122391] print_constraints: max77696_ldo4: 800 <--> 2375 mV at 1800 mV normal idle standby
<6>[ 0.122924] print_constraints: max77696_ldo5: 800 <--> 2375 mV at 1800 mV normal idle standby
<6>[ 0.123483] print_constraints: max77696_ldo6: 800 <--> 3950 mV at 3200 mV normal idle standby
<6>[ 0.124036] print_constraints: max77696_ldo7: 800 <--> 3950 mV at 3200 mV normal idle standby
<6>[ 0.124579] print_constraints: max77696_ldo8: 800 <--> 2375 mV at 1100 mV normal idle standby
<6>[ 0.125120] print_constraints: max77696_ldo9: 800 <--> 2375 mV at 1100 mV normal idle standby
<6>[ 0.125677] print_constraints: max77696_ldo10: 2400 <--> 5550 mV at 5200 mV normal idle standby
<6>[ 0.126469] MAX77696 Linear Regulators Driver 1.0.2 Installed
<6>[ 0.127088] print_constraints: max77696_lsw1:
<6>[ 0.127422] print_constraints: max77696_lsw2:
<6>[ 0.127743] print_constraints: max77696_lsw3:
<6>[ 0.128049] print_constraints: max77696_lsw4:
<6>[ 0.128094] MAX77696 Load Switches Driver 1.0.0 Installed
<6>[ 0.129313] print_constraints: max77696-display:
<6>[ 0.130052] print_constraints: max77696-vcom:
<6>[ 0.130608] print_constraints: max77696-vee:
<6>[ 0.130944] print_constraints: max77696-vneg:
<6>[ 0.131279] print_constraints: max77696-vpos:
<6>[ 0.131588] print_constraints: max77696-vddh:
<6>[ 0.132598]
<6>[ 0.132602] EPD vreg probe complete!
<6>[ 0.133198] print_constraints: max77696_vddq: 240 <--> 984 mV at 600 mV
<6>[ 0.133252] MAX77696 LPDDR2 Termination Supply Driver 1.0.1 Installed
<6>[ 0.134560] MAX77696 I2C Driver 1.0.0 Installed
<4>[ 0.137111] i2c-core: driver [max17135] using legacy suspend method
<4>[ 0.137122] i2c-core: driver [max17135] using legacy resume method
<6>[ 0.137157] Switching to clocksource mxc_timer1
<6>[ 0.147929] NET: Registered protocol family 2
<6>[ 0.148022] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
<6>[ 0.148209] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
<6>[ 0.148323] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
<6>[ 0.148382] TCP: Hash tables configured (established 8192 bind 8192)
<6>[ 0.148390] TCP reno registered
<6>[ 0.148399] UDP hash table entries: 256 (order: 0, 4096 bytes)
<6>[ 0.148415] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
<6>[ 0.148752] NET: Registered protocol family 1
<6>[ 0.148932] RPC: Registered named UNIX socket transport module.
<6>[ 0.148942] RPC: Registered udp transport module.
<6>[ 0.148950] RPC: Registered tcp transport module.
<6>[ 0.148956] RPC: Registered tcp NFSv4.1 backchannel transport module.
<4>[ 0.153043] etb: probe of etb failed with error -2
<4>[ 0.153300] etm: probe of etm.0 failed with error -2
<6>[ 0.153607] Static Power Management for Freescale i.MX6
<6>[ 0.153617] wait mode is enabled for i.MX6
<6>[ 0.153773] cpaddr = d0820000 suspend_iram_base=d081c000
<6>[ 0.153829] PM driver module loaded
<6>[ 0.154091] IMX usb wakeup probe
<7>[ 0.154113] the wakeup pdata is 0xce298080
<6>[ 0.154448] IMX usb wakeup probe
<7>[ 0.154466] the wakeup pdata is 0xce298200
<6>[ 0.154626] cpu regulator mode:ldo_bypass
<6>[ 0.155025] i.MXC CPU frequency driver
<6>[ 0.169241] squashfs: version 4.0 (2009/01/31) Phillip Lougher
<6>[ 0.170245] msgmni has been set to 497
<6>[ 0.170630] io scheduler noop registered
<6>[ 0.170709] io scheduler cfq registered (default)
<6>[ 0.171151] MAX77696 Backlight Driver 1.0.0 Installed
<6>[ 0.171909] imx-sdma imx-sdma: loaded firmware 1.1
<6>[ 0.176371] imx-sdma imx-sdma: initialized
<6>[ 0.178579] Serial: IMX driver
<6>[ 0.178693] imx-uart.0: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX
<6>[ 0.178722] console [ttymxc0] enabled, bootconsole disabled
<6>[ 0.182461] loop: module loaded
<6>[ 0.182696] MAX77696 32kHz Oscillator Driver 1.0.0 Installed
<6>[ 0.183263] input: max77696-onkey as /devices/platform/imx-i2c.0/i2c-0/0-003c/max77696-onkey.0/input/input0
<6>[ 0.186455] MAX77696 ONKEY Driver 1.0.0 Installed
<6>[ 0.208600] max77696-rtc max77696-rtc.0: rtc core: registered max77696-rtc.0 as rtc0
<6>[ 0.228519] max77696-rtc max77696-rtc.0: rtc core: registered max77696-rtc.1 as rtc1
<6>[ 0.247818] MAX77696 RTC Driver 1.0.2 Installed
<6>[ 0.248524] snvs_rtc snvs_rtc.0: rtc core: registered snvs_rtc as rtc2
<6>[ 0.248680] i2c /dev entries driver
<6>[ 0.252675] max77696-battery max77696-battery.0: Voltage alert 3400mV ... 4260mV
<6>[ 0.253089] max77696-battery max77696-battery.0: SOC alert (disabled)
<6>[ 0.253994] MAX77696 Fuel Gauge Driver 1.0.0 Installed
<6>[ 0.255878] MAX77696 USB Interface Circuit Driver 1.0.0 Installed
<6>[ 0.257657] max77696-adc max77696-adc.0: ADC average rate: 32 sample(s)
<6>[ 0.257669] max77696-adc max77696-adc.0: ADC delay: 0 nsec
<6>[ 0.257677] max77696-adc max77696-adc.0: ADC cur src: 50 uA
<6>[ 0.257689] MAX77696 ADC Driver 1.0.1 Installed
<6>[ 0.258189] imx2-wdt imx2-wdt.0: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=1)
<6>[ 0.258565] sdhci: Secure Digital Host Controller Interface driver
<6>[ 0.258574] sdhci: Copyright(c) Pierre Ossman
<6>[ 0.258683] mmc0: no vmmc regulator found
<6>[ 0.259964] mmc0: SDHCI controller on platform [sdhci-esdhc-imx.1] using DMA
<6>[ 0.261033] mmc1: no vmmc regulator found
<6>[ 0.263410] mmc1: SDHCI controller on platform [sdhci-esdhc-imx.2] using DMA
<7>[ 0.264107] Registered led device: max77696-leds.0
<6>[ 0.264118] MAX77696 LED Driver #0 1.0.0 Installed
<7>[ 0.264306] Registered led device: max77696-leds.1
<6>[ 0.264315] MAX77696 LED Driver #1 1.0.0 Installed
<6>[ 0.264829] nf_conntrack version 0.5.0 (3978 buckets, 15912 max)
<6>[ 0.265550] ip_tables: (C) 2000-2006 Netfilter Core Team
<6>[ 0.265617] TCP cubic registered
<6>[ 0.265628] NET: Registered protocol family 17
<6>[ 0.265647] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
<3>[ 0.265782] LPDDR2 MfgId: 0x1 [Samsung]
<3>[ 0.269678]
<3>[ 0.269681] just text: vaddr 0xc011e9bc, va 0xc011e200 pa 0x801000c3 attr 0x6
<3>[ 0.278148]
<3>[ 0.278151] nmx6sl_wfi_iram: vaddr 0xd081a000, va 0xd081a200 pa 0x902043 attr 0x2
<3>[ 0.287122]
<3>[ 0.287124] mx6sl_ddr: vaddr 0xd0852000, va 0xd0852200 pa 0x903043 attr 0x2
<3>[ 0.295583]
<3>[ 0.295585] mx6sl_iomux: vaddr 0xf40e0000, va 0xf40e0200 pa 0x20110c3 attr 0x149
<3>[ 0.304478]
<3>[ 0.304481] ANATOP: vaddr 0xf40c8000, va 0xf40c8200 pa 0x20110c3 attr 0x149
<3>[ 0.312939]
<3>[ 0.312941] CCM: vaddr 0xf40c4000, va 0xf40c4200 pa 0x20110c3 attr 0x149
<3>[ 0.321138]
<3>[ 0.321140] MMDC_P0: vaddr 0xf41b0000, va 0xf41b0200 pa 0x21110c3 attr 0x149
<3>[ 0.329685]
<3>[ 0.329688] L2: vaddr 0xf2a02000, va 0xf2a02200 pa 0xa02043 attr 0x149
<3>[ 0.337710]
<3>[ 0.337713] arm perif: vaddr 0xf2a00000, va 0xf2a00200 pa 0xa00043 attr 0x149
<6>[ 0.350647] Bus freq driver module loaded
<6>[ 0.350658] Bus freq driver Enabled
<6>[ 0.351644] mxc_dvfs_core_probe
<6>[ 0.351906] DVFS driver module loaded
<4>[ 0.353738] regulator_init_complete: max77696_ldo10: incomplete constraints, leaving on
<4>[ 0.354377] regulator_init_complete: max77696_ldo7: incomplete constraints, leaving on
<4>[ 0.354596] regulator_init_complete: max77696_ldo6: incomplete constraints, leaving on
<4>[ 0.355855] regulator_init_complete: max77696_buck6: incomplete constraints, leaving on
<4>[ 0.356077] regulator_init_complete: max77696_buck5: incomplete constraints, leaving on
<4>[ 0.356505] regulator_init_complete: max77696_buck2dvs: incomplete constraints, leaving on
<4>[ 0.356725] regulator_init_complete: max77696_buck1dvs: incomplete constraints, leaving on
<3>[ 0.367437] max77696-adc max77696-adc.0: adc conversion timed out
<6>[ 0.387431] max77696-rtc max77696-rtc.0: setting system clock to 2000-01-01 02:18:18 UTC (946693098)
<3>[ 0.427948] max77696-adc max77696-adc.0: adc conversion timed out
<6>[ 0.434332]
<6>[ 0.434335] ADC value out of thermistor range! setting display temp to 43 deg C
<6>[ 0.434757] KERNEL: I pmic:charger chgina::charger connected
<6>[ 0.440054] MAX77696 Main Charger Driver 1.0.0 Installed
<6>[ 0.443282] MAX77696 Energy Harvester Driver 1.0.0 Installed
<6>[ 0.443847] Freeing init memory: 1040K
<6>[ 0.448117] emmc: I def:mmcpartinfo:vendor=micron, host=mmc0:
<6>[ 0.483185] mmc0: new high speed DDR MMC card at address 0001
<6>[ 0.483482] mmcblk0: mmc0:0001 MMC02G 1.83 GiB
<6>[ 0.483606] mmcblk0boot0: mmc0:0001 MMC02G partition 1 2.00 MiB
<6>[ 0.483726] mmcblk0boot1: mmc0:0001 MMC02G partition 2 2.00 MiB
<6>[ 0.485548] mmcblk0: p1 p2 p3 p4
<6>[ 0.487916] mmcblk0boot1: unknown partition table
<6>[ 0.490004] mmcblk0boot0: unknown partition table
<4>[ 0.561463] mxc_epdc_eink: module license 'proprietary' taints kernel.
<4>[ 0.563499] Disabling lock debugging due to kernel taint
<4>[ 0.563904] INFO:Loaded module /lib/modules/mxc_epdc_eink.ko (10776 bytes)
<6>[ 1.177202] add wake up source irq 104
<6>[ 2.247219] KERNEL: I pmic:fg battery id check::wario_battery_valid=0
<6>[ 2.247257] kernel: kernel_metric_high_priority,946693100,counter,kernel,fg,wario battery invalid,1,
<4>[ 3.307123] INFO:Loaded module /lib/modules/mxc_epdc_fb.ko (85104 bytes)
<4>[ 3.483921] INFO:eink initialized... (786432 bytes)
<4>[ 4.684638] INFO:Couldn't find localized image at /mnt/wfm/images/repair.raw.gz
<4>[ 6.148819] INFO:
<4>[ 6.148927] ===FL fadedown success===
<4>[ 6.149216] ERROR:
<4>[ 6.149224] === BATTERY ID IS INVALID. STOPPING BOOT ===
<6>[ 6.165696] ARC USBOTG Device Controller driver (1 August 2005)
<6>[ 6.169314] add wake up source irq 75
<4>[ 6.178597] USB Cable is already plugged in. Simulating event
<4>[ 6.183045] INFO:Loaded module /lib/modules/arcotg_udc.ko (33324 bytes)
<6>[ 6.205308] g_file_storage gadget: File-backed Storage Gadget, version: 1 September 2010
<6>[ 6.205340] g_file_storage gadget: Number of LUNs=1
<7>[ 6.205369] dr_controller_run: udc out low power mode
<6>[ 6.205387] fsl-usb2-udc: bind to driver g_file_storage
<4>[ 6.205481] INFO:Loaded module /lib/modules/g_file_storage.ko removable=1 vendor=0x1949 product=0x0004 release=0x0100 recovery_mode=1 (37756 bytes)
**** Sent "/" *****
<4>[ 10.181095] INFO:Rebooting ...
<6>[ 10.197724] unregistered gadget driver 'g_file_storage'
<6>[ 10.202146] ARC USBOTG Device Controller driver unregistered
<4>[ 10.396595] INFO:Couldn't find localized image at /mnt/wfm/images/reboot.raw.gz
<6>[ 11.159072] Device spi0.0 removed
Unlike the diags kernel + filesystem, wario_battery_valid comes up as 0 here, triggering "BATTERY ID IS INVALID. STOPPING BOOT". I do also see the "INFO:Loaded module /lib/modules/g_file_storage.ko removable=1 vendor=0x1949 product=0x0004 release=0x0100 recovery_mode=1" which could be indicative of a filesystem check? I'm not sure at this point, but I do know the Kindle isn't drawing any power from USB while in this state, both as shown on the ammeter and as shown by the decreased voltage & charge level in subsequent reboots. If left like this, I suspect it would drain the battery.
EDIT: It's interesting to note that, whether I use the main or diags kernel with idme bootmode main (having flashed the diags kernel to the main kernel as an experiment), the battery ID check fails, whereas if idme bootmode is set to diags, the battery ID check passes and the system boots to diag.
I'm thinking this is an issue with the main rootfs, however, both reflashing mmcblk0p1.bin from
ixtab's site and running through the update_kindle_5.4.3.2.bin process (all of which succeeds, so at this point I doubt it's eMMC related) still results in the battery id check failing & the system hanging in main. At the very least I got the main kernel to spit out boot info by editing bootargs and removing 'quiet'; however, whether I add debug or not, the battery check still fails. I'm at wit's end, not sure where to go from here.
EDIT2: ?!?!?!
Now here's something quite strange. If I have bootmode set to main, then interrupt the boot process, enter bist, set bootmode to diags, and enter 'boot' instead of resetting, the Kindle boots just fine. If I run a restart from the Kindle OS, because the bootmode is diags, it boots into the diags partition. If I run a restart from the Kindle OS, interrupt boot, enter bist, set bootmode to main and reset, it fails the battery check again.
At least I've got it booting and can confirm rootfs is OK. It's nice to have made some progress, but I can't for the life of me explain this behaviour. I've diffed the early boot sections of the two kernels/boot processes (up until the battery id check) and they're basically identical. In the bootargs, two main differences:
Code:
main: rootwait log_pos_goal=0x8fffc000 console=ttymxc0,115200 root=/dev/mmcblk0p1 ro ip=off quiet video=mxcepdcfb:E60,bpp=8,x_mem=3M
diags: rootwait log_pos_goal=0x8fffc000 console=ttymxc0,115200 root=/dev/mmcblk0p2 ro ip=off debug video=mxcepdcfb:E60,bpp=8,x_mem=3M
quiet vs debug, and partition 1 vs 2. Adding 'debug' to main bootargs doesn't have an effect.
EDIT3: When booting with idme bootmode diags set, the Kindle boots the main OS in diags mode, performing a filesystem check, but then booting the interface. wario_battery_valid=1. When booting with idme bootmode normal set, the kernel log is identical up to the wario_battery_valid line, which is now 0, causing boot to stop. The battery is now fully charged at nearly 4.2v. I don't know enough about the boot process to tell where it's getting this information from & whether the relevant module can be disabled. As it stands, I can't perform restarts without serial as I need to change the bootmode back to main, reset, then interrupt and change back to diags so the battery ID check passes.