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Zealot
Posts: 147
Karma: 20
Join Date: Jul 2019
Device: Kindle Touch (K5) Wi-Fi x 2, Kindle (7th Gen, KT2), Paperwhite 3rd Gen
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Quote:
Originally Posted by smindux
Quite. He explains enabling debugging for QEMU and it is giving me some output ... not very helpful though.
CFLAGS is for enabling u-boot debugging and LOGLEVEL=8 should be quite verbose as per documentation.
Maybe trying this setup for i386 just for verification is sound idea, but this is an exercise for another day.
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Hi again! I've been really busy, and finding time to crunch keys is getting quite difficult.
This is dmesg from sabrelite with kernel version 4.1.15 (Kindle tree):
Code:
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.1.15-lab126 (waseem@my-awesome-slabtop) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #1 SMP PREEMPT Fri Oct 11 02:01:27 EEST 2019
[ 0.000000] CPU: ARMv7 Processor [410fc090] revision 0 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[ 0.000000] Machine model: Lab126 i.MX6SLL Board
[ 0.000000] #### Error!! BIOS area is not in a memory region!!
[ 0.000000] log_goal_location: 0x9be00000
[ 0.000000] Unable to change over to statically positioned printk buffer!
[ 0.000000] Printk log placed at 0x00000000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] PERCPU: Embedded 12 pages/cpu @9fbd6000 s17472 r8192 d23488 u49152
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
[ 0.000000] Kernel command line: console=ttymxc0 root=/dev/mmcblk0p1
[ 0.000000] log_buf_len: 262144 bytes
[ 0.000000] early log buf free: 260364(99%)
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 506520K/524288K available (8196K kernel code, 550K rwdata, 3064K rodata, 368K init, 574K bss, 17768K reserved, 0K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xa0800000 - 0xff000000 (1512 MB)
lowmem : 0x80000000 - 0xa0000000 ( 512 MB)
modules : 0x7f000000 - 0x80000000 ( 16 MB)
.text : 0x80008000 - 0x80b0739c (11261 kB)
.init : 0x80b08000 - 0x80b64000 ( 368 kB)
.data : 0x80b64000 - 0x80bedac8 ( 551 kB)
.bss : 0x80bf0000 - 0x80c7facc ( 575 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] L2C-310 erratum 769419 enabled
[ 0.000000] L2C-310 full line of zeros enabled for Cortex-A9
[ 0.000000] L2C-310 cache controller enabled, 8 ways, 64 kB
[ 0.000000] L2C-310: CACHE_ID 0x00000000, AUX_CTRL 0x00000000
[ 0.000000] Division by zero in kernel.
[ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.15-lab126 #1
[ 0.000000] Hardware name: Freescale i.MX6 SoloLite (Device Tree)
[ 0.000000] [<80016f64>] (unwind_backtrace) from [<80013730>] (show_stack+0x10/0x14)
[ 0.000000] [<80013730>] (show_stack) from [<807c3ac8>] (dump_stack+0x9c/0xdc)
[ 0.000000] [<807c3ac8>] (dump_stack) from [<802b60e0>] (Ldiv0_64+0x8/0x18)
[ 0.000000] [<802b60e0>] (Ldiv0_64) from [<800233bc>] (clk_pllv3_generic_recalc_rate+0x50/0x58)
[ 0.000000] [<800233bc>] (clk_pllv3_generic_recalc_rate) from [<8059ca48>] (clk_register+0x350/0x73c)
[ 0.000000] [<8059ca48>] (clk_register) from [<8002376c>] (imx_clk_pllv3+0xf0/0x270)
[ 0.000000] [<8002376c>] (imx_clk_pllv3) from [<80b15a38>] (imx6sll_clocks_init+0x330/0x2b14)
[ 0.000000] [<80b15a38>] (imx6sll_clocks_init) from [<80b3ab18>] (of_clk_init+0x100/0x190)
[ 0.000000] [<80b3ab18>] (of_clk_init) from [<80b0c550>] (time_init+0x28/0x30)
[ 0.000000] [<80b0c550>] (time_init) from [<80b08b50>] (start_kernel+0x284/0x3c8)
[ 0.000000] [<80b08b50>] (start_kernel) from [<1000807c>] (0x1000807c)
[ 0.000000] mxc_clocksource_init 3000000
[ 0.000000] Switching to timer-based delay loop, resolution 333ns
[ 0.000244] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 715827882841ns
[ 0.000507] clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns
[ 0.011742] Console: colour dummy device 80x30
[ 0.016149] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
[ 0.016304] pid_max: default: 32768 minimum: 301
[ 0.017530] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.017580] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.029661] CPU: Testing write buffer coherency: ok
[ 0.038498] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.039247] Setting up static identity map for 0x10008280 - 0x100082d8
[ 0.098013] Brought up 1 CPUs
[ 0.098186] SMP: Total of 1 processors activated (6.00 BogoMIPS).
[ 0.098304] CPU: All CPU(s) started in SVC mode.
[ 0.117198] devtmpfs: initialized
[ 0.141477] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0
[ 0.162446] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.170117] pinctrl core: initialized pinctrl subsystem
[ 0.192318] NET: Registered protocol family 16
[ 0.195938] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.226214] cpuidle: using governor ladder
[ 0.246219] cpuidle: using governor menu
[ 0.309822] imx_mmdc_probe: failed to enable automatic power saving
[ 0.309984] imx-mmdc: probe of 21b0000.mmdc failed with error -16
[ 0.318230] failed to find fsl,imx6sl-iomux-gpr regmap
[ 0.320124] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.331189] imx6sll-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[ 0.416624] SCSI subsystem initialized
[ 0.419901] usbcore: registered new interface driver usbfs
[ 0.421636] usbcore: registered new interface driver hub
[ 0.423149] usbcore: registered new device driver usb
[ 0.533186] bd71827 0-004b: bd71827_i2c_probe(): Read BD71827_REG_DEVICE failed!
[ 0.538582] bd71827: probe of 0-004b failed with error -110
[ 0.540583] i2c i2c-0: IMX I2C adapter registered
[ 0.541007] i2c i2c-0: can't use DMA
[ 0.544978] i2c i2c-1: IMX I2C adapter registered
[ 0.545119] i2c i2c-1: can't use DMA
[ 0.548952] i2c i2c-2: IMX I2C adapter registered
[ 0.549017] i2c i2c-2: can't use DMA
[ 0.549316] Linux video capture interface: v2.00
[ 0.549875] pps_core: LinuxPPS API ver. 1 registered
[ 0.549916] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.550081] PTP clock support registered
[ 0.553110] MIPI CSI2 driver module loaded
[ 0.555032] Advanced Linux Sound Architecture Driver Initialized.
[ 0.565011] Bluetooth: Core ver 2.20
[ 0.565242] NET: Registered protocol family 31
[ 0.565277] Bluetooth: HCI device and connection manager initialized
[ 0.565467] Bluetooth: HCI socket layer initialized
[ 0.565567] Bluetooth: L2CAP socket layer initialized
[ 0.565868] Bluetooth: SCO socket layer initialized
[ 0.571715] Switched to clocksource mxc_timer1
[ 0.582220] cfg80211: World regulatory domain updated:
[ 0.582285] cfg80211: DFS Master region: unset
[ 0.582331] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 0.582494] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 0.582651] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 0.582678] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[ 0.582704] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 0.582751] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 0.582775] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 0.582798] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 0.582820] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[ 0.610284] idme_init:can't find idme node in DT
[ 0.613811] NET: Registered protocol family 2
[ 0.618543] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.618732] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.618951] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.619412] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.619554] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.620795] NET: Registered protocol family 1
[ 0.623848] RPC: Registered named UNIX socket transport module.
[ 0.623915] RPC: Registered udp transport module.
[ 0.623945] RPC: Registered tcp transport module.
[ 0.623966] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.635223] Bus freq driver module loaded
[ 0.638759] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.658748] VFS: Disk quotas dquot_6.6.0
[ 0.659346] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.666427] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.669396] NFS: Registering the id_resolver key type
[ 0.670232] Key type id_resolver registered
[ 0.670285] Key type id_legacy registered
[ 0.671010] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[ 0.673661] fuse init (API version 7.23)
[ 0.691330] io scheduler noop registered
[ 0.691424] io scheduler deadline registered
[ 0.691914] io scheduler cfq registered (default)
[ 0.697417] MIPI DSI driver module loaded
[ 0.697825] MIPI DSI driver module loaded
[ 0.704383] imx-sdma 20ec000.sdma: no event needs to be remapped
[ 0.705843] imx-sdma 20ec000.sdma: Timeout waiting for CH0 ready
[ 0.706187] imx-sdma 20ec000.sdma: loaded firmware 3.3
[ 0.715348] imx-sdma 20ec000.sdma: initialized
[ 0.716675] regulator-virtuals:virt-buck1 supply buck1 not found, using dummy regulator
[ 0.717265] reg-virt-consumer regulator-virtuals:virt-buck1: attached: buck1
[ 0.717414] regulator-virtuals:virt-buck2 supply buck2 not found, using dummy regulator
[ 0.717603] reg-virt-consumer regulator-virtuals:virt-buck2: attached: buck2
[ 0.717725] regulator-virtuals:virt-buck3 supply buck3 not found, using dummy regulator
[ 0.717881] reg-virt-consumer regulator-virtuals:virt-buck3: attached: buck3
[ 0.717998] regulator-virtuals:virt-buck4 supply buck4 not found, using dummy regulator
[ 0.718149] reg-virt-consumer regulator-virtuals:virt-buck4: attached: buck4
[ 0.718266] regulator-virtuals:virt-buck5 supply buck5 not found, using dummy regulator
[ 0.718497] reg-virt-consumer regulator-virtuals:virt-buck5: attached: buck5
[ 0.718619] regulator-virtuals:virt-ldo1 supply ldo1 not found, using dummy regulator
[ 0.718773] reg-virt-consumer regulator-virtuals:virt-ldo1: attached: ldo1
[ 0.718891] regulator-virtuals:virt-ldo2 supply ldo2 not found, using dummy regulator
[ 0.719058] reg-virt-consumer regulator-virtuals:virt-ldo2: attached: ldo2
[ 0.719178] regulator-virtuals:virt-ldo3 supply ldo3 not found, using dummy regulator
[ 0.719360] reg-virt-consumer regulator-virtuals:virt-ldo3: attached: ldo3
[ 0.719483] regulator-virtuals:virt-ldo4 supply ldo4 not found, using dummy regulator
[ 0.719638] reg-virt-consumer regulator-virtuals:virt-ldo4: attached: ldo4
[ 0.719759] regulator-virtuals:virt-ldo5 supply ldo5 not found, using dummy regulator
[ 0.719910] reg-virt-consumer regulator-virtuals:virt-ldo5: attached: ldo5
[ 0.720030] regulator-virtuals:virt-ldo6 supply ldo6 not found, using dummy regulator
[ 0.720208] reg-virt-consumer regulator-virtuals:virt-ldo6: attached: ldo6
[ 0.720344] regulator-virtuals:virt-ldosnvs supply ldosnvs not found, using dummy regulator
[ 0.720546] reg-virt-consumer regulator-virtuals:virt-ldosnvs: attached: ldosnvs
[ 0.724830] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 18, base_baud = 5000000) is a IMX
[ 0.786689] console [ttymxc0] enabled
[ 0.792631] 2034000.serial: ttymxc2 at MMIO 0x2034000 (irq = 19, base_baud = 5000000) is a IMX
The kernel panics, because of a division by zero before it can mount the rootfs.
While this is the dmesg from the board versatile from that same kernel tree:
Code:
Booting Linux on physical CPU 0x0
Linux version 4.1.15 (waseem@my-awesome-slabtop) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #1 Fri Oct 11 12:43:20 EEST 2019
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00093177
CPU: VIVT data cache, VIVT instruction cache
Machine: ARM-Versatile PB
log_goal_location: 0x9be00000
Unable to change over to statically positioned printk buffer!
Printk log placed at 0x00000000
Memory policy: Data cache writeback
sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
Kernel command line: console=ttyAMA0
log_buf_len: 16384 bytes
early log buf free: 15064(91%)
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 255644K/262144K available (2978K kernel code, 140K rwdata, 796K rodata, 120K init, 120K bss, 6500K reserved, 0K cma-reserved)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc03b7eb4 (3776 kB)
.init : 0xc03b8000 - 0xc03d6000 ( 120 kB)
.data : 0xc03d6000 - 0xc03f9020 ( 141 kB)
.bss : 0xc03f9020 - 0xc04172c0 ( 121 kB)
NR_IRQS:224
VIC @f1140000: id 0x00041190, vendor 0x41
FPGA IRQ chip 0 "SIC" @ f1003000, 13 irqs, parent IRQ: 63
clocksource timer3: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns
Console: colour dummy device 80x30
Calibrating delay loop... 552.96 BogoMIPS (lpj=2764800)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x8400 - 0x8458
VFP support v0.3: implementor 41 architecture 1 part 10 variant 9 rev 0
clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
Serial: AMBA PL011 UART driver
dev:f1: ttyAMA0 at MMIO 0x101f1000 (irq = 44, base_baud = 0) is a PL011 rev1
console [ttyAMA0] enabled
dev:f2: ttyAMA1 at MMIO 0x101f2000 (irq = 45, base_baud = 0) is a PL011 rev1
dev:f3: ttyAMA2 at MMIO 0x101f3000 (irq = 46, base_baud = 0) is a PL011 rev1
fpga:09: ttyAMA3 at MMIO 0x10009000 (irq = 70, base_baud = 0) is a PL011 rev1
Switched to clocksource timer3
NET: Registered protocol family 2
TCP established hash table entries: 2048 (order: 1, 8192 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NetWinder Floating Point Emulator V0.97 (double precision)
futex hash table entries: 256 (order: -1, 3072 bytes)
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
pl061_gpio dev:e4: PL061 GPIO chip @0x101e4000 registered
pl061_gpio dev:e5: PL061 GPIO chip @0x101e5000 registered
pl061_gpio dev:e6: PL061 GPIO chip @0x101e6000 registered
pl061_gpio dev:e7: PL061 GPIO chip @0x101e7000 registered
clcd-pl11x dev:20: PL110 rev0 at 0x10120000
clcd-pl11x dev:20: Versatile hardware, VGA display
Console: switching to colour frame buffer device 80x60
brd: module loaded
physmap platform flash device: 04000000 at 34000000
physmap-flash.0: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer ID 0x000000 Chip ID 0x000000
Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>
smc91x smc91x.0 eth0: SMC91C11xFD (rev 1) at d0a58000 IRQ 57
[nowait]
smc91x smc91x.0 eth0: Ethernet addr: 52:54:00:12:34:56
mousedev: PS/2 mouse device common for all mice
ledtrig-cpu: registered to indicate activity on CPUs
NET: Registered protocol family 17
input: ImExPS/2 Generic Explorer Mouse as /devices/fpga:07/serio1/input/input1
VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
0100 4096 ram0 (driver?)
0101 4096 ram1 (driver?)
0102 4096 ram2 (driver?)
0103 4096 ram3 (driver?)
0104 4096 ram4 (driver?)
0105 4096 ram5 (driver?)
0106 4096 ram6 (driver?)
0107 4096 ram7 (driver?)
0108 4096 ram8 (driver?)
0109 4096 ram9 (driver?)
010a 4096 ram10 (driver?)
010b 4096 ram11 (driver?)
010c 4096 ram12 (driver?)
010d 4096 ram13 (driver?)
010e 4096 ram14 (driver?)
010f 4096 ram15 (driver?)
1f00 65536 mtdblock0 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
CPU: 0 PID: 1 Comm: swapper Not tainted 4.1.15 #1
Hardware name: ARM-Versatile PB
[<c001a8d4>] (unwind_backtrace) from [<c0017eac>] (show_stack+0x10/0x14)
[<c0017eac>] (show_stack) from [<c02d08f0>] (panic+0x84/0x1e0)
[<c02d08f0>] (panic) from [<c03b9120>] (mount_block_root+0x1a4/0x25c)
[<c03b9120>] (mount_block_root) from [<c03b93b8>] (mount_root+0xe4/0x10c)
[<c03b93b8>] (mount_root) from [<c03b9540>] (prepare_namespace+0x160/0x1b4)
[<c03b9540>] (prepare_namespace) from [<c03b8da4>] (kernel_init_freeable+0x170/0x1b4)
[<c03b8da4>] (kernel_init_freeable) from [<c02cffdc>] (kernel_init+0x8/0xec)
[<c02cffdc>] (kernel_init) from [<c0014880>] (ret_from_fork+0x14/0x34)
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
It doesn't panic (or more accurately, it panics, but justifiably, because of no root filesystem).
Last edited by WaseemAlkurdi; 10-19-2019 at 04:57 AM.
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