I was provided with a 3.0.35 linux kernel for an arm i.mx6 board that uses the older "board file" format, as well as an older (2013.02) buildroot repo that has been used to generate the proper images and rootfs.
My goal is to use the latest buildroot public repo commit so that in the future it will be easier to keep packages up to date. Currently, I have to manually edit package files (OpenSSL, lighttpd, etc) to make the latest version available via buildroot.
I tried replicating my board configuration within the latest buildroot (post-2016.05). Everything remained more or less the same, except the toolchain had to change to support the newer systemd (Linaro 2013.01 -> CodeBench ARM 2014.05). Results:
Buildroot: build succeeds
U-boot: image works
Kernel: image causes a kernel panic
My questions really are:
Can I use my older kernel with the newer buildroot/toolchain, or is this an incompatibility? Do certain toolchains not support older kernels?
If it is an incompatiblity, is there an easier way to keep my older buildroot's packages up to date?
If both above are not options, is there any sort of tool to help migrate from a board file to device tree? Is it easy to convert to dts, or is this a long project?
EDIT:
Changed to Linaro 2014.09 toolchain. I was previously using systemd 202 as my init system. Since the newer buildroot requires a toolchain built against kernel headers >= 3.10 for systemd, I had to switch my init system to systemv. Here is the crash I'm receiving:
Starting kernel ...
Linux version 3.0.35 (eschumacher#ubuntu) (gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) ) #1 SMP PREEMPT Tue Jun 21 11:01:40 PDT 2016
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: i.MX 6Quad/DualLite/Solo SMARC CPU Board
Memory policy: ECC disabled, Data cache writealloc
CPU identified as i.MX6DL/SOLO, silicon rev 1.1
PERCPU: Embedded 7 pages/cpu #8bc06000 s5440 r8192 d15040 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 84992
Kernel command line: console=ttymxc3,115200 root=/dev/mmcblk0p2 rootwait rw
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 336MB = 336MB total
Memory: 327580k/327580k available, 196708k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xf4600000 - 0xffe00000 ( 184 MB)
vmalloc : 0xa0800000 - 0xf2000000 (1304 MB)
lowmem : 0x80000000 - 0xa0000000 ( 512 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x80039000 ( 196 kB)
.text : 0x80039000 - 0x80af9538 (11010 kB)
.data : 0x80afa000 - 0x80b53be0 ( 359 kB)
.bss : 0x80b53c04 - 0x80ba775c ( 335 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:624
MXC GPIO hardware
sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
Set periph_clk's parent to pll2_pfd_400M!
arm_max_freq=800MHz
MXC_Early serial console at MMIO 0x21f0000 (options '115200')
bootconsole [ttymxc3] enabled
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
Brought up 1 CPUs
SMP: Total of 1 processors activated (1581.05 BogoMIPS).
devtmpfs: initialized
print_constraints: dummy:
NET: Registered protocol family 16
print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal
print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal
print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal
print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal
print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal
print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal
hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.
hw-breakpoint: maximum watchpoint size is 4 bytes.
L310 cache controller enabled
l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x02050000, Cache size: 524288 B
bio: create slab <bio-0> at 0
mxs-dma mxs-dma-apbh: initialized
print_constraints: vmmc: 3300 mV
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Freescale USB OTG Driver loaded, $Revision: 1.55 $
imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)
MIPI CSI2 driver module loaded
Advanced Linux Sound Architecture Driver Version 1.0.24.
Bluetooth: Core ver 2.16
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP socket layer initialized
Bluetooth: SCO socket layer initialized
i2c-core: driver [max17135] using legacy suspend method
i2c-core: driver [max17135] using legacy resume method
Switching to clocksource mxc_timer1
cfg80211: Calling CRDA to update world regulatory domain
Unable to handle kernel NULL pointer dereference at virtual address 00000040
pgd = 80004000
[00000040] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 Not tainted (3.0.35 #1)
PC is at kmem_cache_alloc+0xa4/0x108
LR is at con_insert_unipair+0xb8/0x104
pc : [<800f40c0>] lr : [<80299574>] psr: 60000093
sp : 9202fef0 ip : 9202e000 fp : 00000001
r10: 00000000 r9 : 0bbcf000 r8 : 20000013
r7 : 000000d0 r6 : 92002300 r5 : 00000040 r4 : 80b0fcc8
r3 : 8003a5a0 r2 : 80b0fcc8 r1 : 000024ac r0 : 00000001
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c53c7d Table: 1000404a DAC: 00000015
Process swapper (pid: 1, stack limit = 0x9202e2f0)
Stack: (0x9202fef0 to 0x92030000)
fee0: 00002665 921bcee4 920f4900 00000003
ff00: 80b2fee8 80b2fee6 00000003 80299574 00000000 00000001 920f4900 00000003
ff20: 80b2fee8 8029a1a4 00000000 80b30143 92003000 80b729d8 00000136 00000001
ff40: 00000014 80b72bfc 00000001 00000002 00000004 00000000 8001fce4 8001f214
ff60: 00000000 80b72ad8 00000001 8001f714 80a695d4 00000000 80b725d4 00000000
ff80: 8003fb04 00000013 00000000 00000000 00000000 8001eb68 80a37670 00000000
ffa0: 80b53c20 80b53c20 9202e030 800395c0 000001df 00000013 00000000 00000000
ffc0: 00000039 00000000 00000270 8002fb14 8002ffa0 8003fb04 00000013 00000000
ffe0: 00000000 00000000 00000000 8000898c 00000000 8003fb04 c38ac389 c38dc38b
[<800f40c0>] (kmem_cache_alloc+0xa4/0x108) from [<80299574>] (con_insert_unipair+0xb8/0x104)
[<80299574>] (con_insert_unipair+0xb8/0x104) from [<8029a1a4>] (con_set_default_unimap+0xe8/0x178)
[<8029a1a4>] (con_set_default_unimap+0xe8/0x178) from [<8001f214>] (console_map_init+0x44/0x50)
[<8001f214>] (console_map_init+0x44/0x50) from [<8001f714>] (vty_init+0x18c/0x19c)
[<8001f714>] (vty_init+0x18c/0x19c) from [<8001eb68>] (tty_init+0x12c/0x144)
[<8001eb68>] (tty_init+0x12c/0x144) from [<800395c0>] (do_one_initcall+0x114/0x16c)
[<800395c0>] (do_one_initcall+0x114/0x16c) from [<8000898c>] (kernel_init+0xc0/0x144)
[<8000898c>] (kernel_init+0xc0/0x144) from [<8003fb04>] (kernel_thread_exit+0x0/0x8)
Code: 1afffff3 e596a014 e2811004 e3a00001 (e795a00a)
---[ end trace 1b75b31a2719ed1c ]---
Kernel panic - not syncing: Attempted to kill init!
[<8004631c>] (unwind_backtrace+0x0/0xec) from [<80569100>] (panic+0x80/0x19c)
[<80569100>] (panic+0x80/0x19c) from [<80075934>] (complete_and_exit+0x0/0x1c)
[<80075934>] (complete_and_exit+0x0/0x1c) from [<00000001>] (0x1)
EDIT 2:
I changed buildroot config to build my own toolchain using my kernel headers. I still receive a similar kernel panic. Output:
Starting kernel ...
Linux version 3.0.35 (eschumacher#ubuntu) (gcc version 4.9.3 (Buildroot 2016.08- git-00508-geba9c44-dirty) ) #1 SMP PREEMPT Tue Jun 21 16:41:35 PDT 2016
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: i.MX 6Quad/DualLite/Solo SMARC CPU Board
Memory policy: ECC disabled, Data cache writealloc
CPU identified as i.MX6DL/SOLO, silicon rev 1.1
PERCPU: Embedded 7 pages/cpu #8bc06000 s5440 r8192 d15040 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 84992
Kernel command line: console=ttymxc3,115200 root=/dev/mmcblk0p2 rootwait rw
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 336MB = 336MB total
Memory: 327564k/327564k available, 196724k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xf4600000 - 0xffe00000 ( 184 MB)
vmalloc : 0xa0800000 - 0xf2000000 (1304 MB)
lowmem : 0x80000000 - 0xa0000000 ( 512 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x80039000 ( 196 kB)
.text : 0x80039000 - 0x80afd458 (11026 kB)
.data : 0x80afe000 - 0x80b57bc0 ( 359 kB)
.bss : 0x80b57be4 - 0x80bab73c ( 335 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:624
MXC GPIO hardware
sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
Set periph_clk's parent to pll2_pfd_400M!
arm_max_freq=800MHz
MXC_Early serial console at MMIO 0x21f0000 (options '115200')
bootconsole [ttymxc3] enabled
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
Brought up 1 CPUs
SMP: Total of 1 processors activated (1581.05 BogoMIPS).
devtmpfs: initialized
print_constraints: dummy:
NET: Registered protocol family 16
print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal
print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal
print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal
print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal
print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal
print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal
hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.
hw-breakpoint: maximum watchpoint size is 4 bytes.
L310 cache controller enabled
l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x02050000, Cache size: 524288 B
bio: create slab <bio-0> at 0
mxs-dma mxs-dma-apbh: initialized
print_constraints: vmmc: 3300 mV
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Freescale USB OTG Driver loaded, $Revision: 1.55 $
imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)
MIPI CSI2 driver module loaded
Advanced Linux Sound Architecture Driver Version 1.0.24.
Bluetooth: Core ver 2.16
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP socket layer initialized
Bluetooth: SCO socket layer initialized
i2c-core: driver [max17135] using legacy suspend method
i2c-core: driver [max17135] using legacy resume method
Switching to clocksource mxc_timer1
cfg80211: Calling CRDA to update world regulatory domain
Unable to handle kernel NULL pointer dereference at virtual address 00000040
pgd = 80004000
[00000040] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 Not tainted (3.0.35 #1)
PC is at kmem_cache_alloc+0xa4/0x108
LR is at con_insert_unipair+0xb8/0x104
pc : [<800f3bbc>] lr : [<80298a88>] psr: 60000093
sp : 9202fef8 ip : 9202e000 fp : 00000001
r10: 00000000 r9 : 0bbcf000 r8 : 20000013
r7 : 000000d0 r6 : 92002300 r5 : 00000040 r4 : 80b13cc8
r3 : 8003a5a0 r2 : 80b13cc8 r1 : 000024ac r0 : 00000001
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c53c7d Table: 1000404a DAC: 00000015
Process swapper (pid: 1, stack limit = 0x9202e2f0)
Stack: (0x9202fef8 to 0x92030000)
fee0: 00002665 921bcee4
ff00: 920f4900 00000003 80b33ec8 80b33ec6 00000003 80298a88 80b34123 00000000
ff20: 00000001 920f4900 00000003 802996b8 00000001 80b34123 92003000 80b769b8
ff40: 8001fc40 00000001 00000014 80b76bdc 00000002 00000004 00000000 00000000
ff60: 8001fc40 8001f168 00000000 80b76ab8 00000001 8001f668 80a684a4 8014768c
ff80: 80b765b4 00000000 8003fac4 00000013 00000000 8001eac4 80a36540 00000000
ffa0: 80b57c00 80b57c00 9202e030 800395b8 000001df 00000013 00000000 00000000
ffc0: 00000039 00000000 00000270 8002fa74 8002ff00 8003fac4 00000013 00000000
ffe0: 00000000 00000000 00000000 8000898c 00000000 8003fac4 e345c1eb e0c32c90
[<800f3bbc>] (kmem_cache_alloc+0xa4/0x108) from [<80298a88>] (con_insert_unipair +0xb8/0x104)
[<80298a88>] (con_insert_unipair+0xb8/0x104) from [<802996b8>] (con_set_default_ unimap+0xe8/0x178)
[<802996b8>] (con_set_default_unimap+0xe8/0x178) from [<8001f168>] (console_map_ init+0x44/0x50)
[<8001f168>] (console_map_init+0x44/0x50) from [<8001f668>] (vty_init+0x18c/0x19 c)
[<8001f668>] (vty_init+0x18c/0x19c) from [<8001eac4>] (tty_init+0x12c/0x144)
[<8001eac4>] (tty_init+0x12c/0x144) from [<800395b8>] (do_one_initcall+0x114/0x1 6c)
[<800395b8>] (do_one_initcall+0x114/0x16c) from [<8000898c>] (kernel_init+0xc0/0 x144)
[<8000898c>] (kernel_init+0xc0/0x144) from [<8003fac4>] (kernel_thread_exit+0x0/ 0x8)
Code: 1afffff3 e596a014 e2811004 e3a00001 (e795a00a)
---[ end trace 1b75b31a2719ed1c ]---
Kernel panic - not syncing: Attempted to kill init!
[<800462c8>] (unwind_backtrace+0x0/0xec) from [<80567fcc>] (panic+0x80/0x19c)
[<80567fcc>] (panic+0x80/0x19c) from [<800757e0>] (complete_and_exit+0x0/0x1c)
[<800757e0>] (complete_and_exit+0x0/0x1c) from [<00000001>] (0x1)
As I stated in a comment, the crash looks very similar to the one in Freescale 3.0.35 kernel crash. If so, the crash happens in memset.S. The top two commits in memset.S in upstream kernel whose SHA1 begins with c2459d3 and 1bd4678, respectively, should solve that issue.
Related
I've managed to compile a driver for an ARM based device, but the driver crashed when I try to load it.
here is the output from cpuinfo:
Processor : ARMv7 Processor rev 2 (v7l)
BogoMIPS : 999.42
Features : swp half thumb fastmult vfp edsp neon vfpv3
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc08
CPU revision : 2
Here is the uname -r output
2.6.37
modinfo driver.ko
filename: cp210x.ko
description: Silicon Labs CP210x RS232 serial adaptor driver
license: GPL
vermagic: 2.6.37 mod_unload ARMv7
vermagic: 2.6.37 mod_unload modversions ARMv5
parm: debug:Enable verbose debugging messages
As you can I've added an extra vermagic (2.6.37 mod_unload ARMv7) so it will match the target system.
So if I understand this correct, I've compiled this module for an ARMv5 cpu, while the target is v7. Could this be the cause of the device driver crashing?
The device has this driver, but its embedded into an other driver package from the hw producer. This package also load some drivers that we cannot use. This driver package is not load, but I guess this indicate that this driver should work on this hardware some how.
here is the crash log
modprobe cp210x.ko
Unable to handle kernel NULL pointer dereference at virtual address 0000000a
pgd = ca1fc000
[0000000a] *pgd=870dd031, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1]
last sysfs file: /sys/kernel/uevent_seqnum
Modules linked in: dahdi_dummy dahdi cmemk syslink ipt_MASQUERADE nf_nat iptable_filter ip_tables ipt_LOG xt_state nf_conntrack_ftp nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 xt_recent xt_mac xt_limit work_led reset_button ipv6
CPU: 0 Not tainted (2.6.37 #1)
PC is at sys_init_module+0xfe0/0x1460
LR is at sys_init_module+0xe7c/0x1460
pc : [<c00836e8>] lr : [<c0083584>] psr: 20000013
sp : cc5e9ed0 ip : bf3828dc fp : cc5e8000
r10: bf385ca8 r9 : cf3bcb4e r8 : 000000c5
r7 : 00000027 r6 : bf382544 r5 : bf38266c r4 : bf385ca8
r3 : 00000000 r2 : c7c9f000 r1 : 0000000a r0 : 0000000a
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 8a1fc019 DAC: 00000015
Process modprobe (pid: 2676, stack limit = 0xcc5e82e8)
Stack: (0xcc5e9ed0 to 0xcc5ea000)
9ec0: bf382544 00000001 000ac048 bf382550
9ee0: 000000c5 cf3bd5a4 cf3b8000 000055f4 cf3bd20c cf3bd128 cf3bc2a0 c7c9f000
9f00: 0000266c 000028dc 00000000 00000000 00000017 00000018 00000010 0000000d
9f20: 00000009 00000000 6e72656b 00006c65 00000000 00000000 00000000 00000000
9f40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9f60: 00000000 00000000 c9a19540 00000000 ca2403c0 00000006 c9a19540 00000000
9f80: ca2403c0 000055f4 00000000 00000006 00000080 c0037c28 cc5e8000 00000000
9fa0: 00000001 c0037a80 000055f4 00000000 000ac998 000055f4 000ac048 000ac978
9fc0: 000055f4 00000000 00000006 00000080 000ac008 000ac028 000ac998 00000001
9fe0: bebaf968 bebaf958 00017764 40214740 60000010 000ac998 c1e38bcc 03de8ad9
[<c00836e8>] (sys_init_module+0xfe0/0x1460) from [<c0037a80>] (ret_fast_syscall+0x0/0x30)
Code: e7923103 e1a03133 e3130001 15963128 (17d33000)
---[ end trace 6e8943127db36208 ]---
Segmentation fault
I hade to change the cp210x.c file and comment out where there was any use of mutex. this was the only place:
static void cp210x_close(struct usb_serial_port *port)
{
dbg("%s - port %d", __func__, port->number);
usb_serial_generic_close(port);
/* mutex_lock(&port->serial->disc_mutex);*/
if (!port->serial->disconnected)
cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
/* mutex_unlock(&port->serial->disc_mutex);*/
}
Are you trying to load a kernel module that was compiled for one kernel into another kernel? Linux modules (what you call drivers) are only supposed to be loaded into the kernel that they were compiled for. Even the same version of the kernel with different configuration or compiler settings could render the module incompatible. So playing with version magic is very dangerous.
The reason your driver is crashing is because it is trying to access kernel data structures using incorrect layout, so it is not actually reading the attributes it thinks it should be reading.
Changing architecture from ARMv7 to ARMv5 is very drastic configuration change that will completely change the memory layout of kernel data structures.
Unlike some other operating systems like Windows, Linux does not have an abstraction layer or fixed memory layouts that let you load the same loadable module into different versions of the kernel.
I have an issue regarding the execution of a custom Openwrt system with Linux 3.12.17 in Qemu 2.0.0. During the boot process, I have a message telling me that the bootloader cannot find my root partition device, which is /dev/sda as you can see in the following image :
Shell:~$ sudo fdisk -l
[sudo] password for :
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000f25bd
Device Boot Start End Blocks Id System
/dev/sda1 * 16065 1028159 506047+ 83 Linux
/dev/sda2 1028160 41592284 20282062+ 83 Linux
/dev/sda3 41592285 976773167 467590441+ f W95 Ext'd (LBA)
/dev/sda5 41608350 45608534 2000092+ 82 Linux swap / Solaris
/dev/sda6 45620266 976773167 465576451 83 Linux
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdb: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 500118191 250059095+ ee GPT
Here is the command that I use to launch the Qemu emulator :
qemu-system-x86_64 -m 512 \
-kernel bin/x86/openwrt-x86-sgc_qemu-vmlinuz \
--append "root=/dev/sda rw" \
-nographic -usb \
-hda bin/x86/openwrt-x86-sgc_qemu-rootfs-ext4.img
Here is the full boot log :
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Initializing cgroup subsys cpuacct
Linux version 3.12.17 (g602882#rmm-p1303101) (gcc version 4.5.2 (GCC) ) #4 SMP PREEMPT Wed Mar 8 15:47:13 CET 2017
e820: BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x000000001fffdfff] usable
BIOS-e820: [mem 0x000000001fffe000-0x000000001fffffff] reserved
BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel!
SMBIOS 2.4 present.
e820: last_pfn = 0x1fffe max_arch_pfn = 0x100000
PAT not supported by CPU.
found SMP MP-table at [mem 0x000f0b30-0x000f0b3f] mapped at [c00f0b30]
init_memory_mapping: [mem 0x00000000-0x000fffff]
init_memory_mapping: [mem 0x1f800000-0x1fbfffff]
init_memory_mapping: [mem 0x18000000-0x1f7fffff]
init_memory_mapping: [mem 0x00100000-0x17ffffff]
init_memory_mapping: [mem 0x1fc00000-0x1fffdfff]
ACPI: RSDP 000f09a0 00014 (v00 BOCHS )
ACPI: RSDT 1ffffbc1 00034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
ACPI: FACP 1ffff1c0 00074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
ACPI: DSDT 1fffe040 01180 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
ACPI: FACS 1fffe000 00040
ACPI: SSDT 1ffff234 008DD (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001)
ACPI: APIC 1ffffb11 00078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
ACPI: HPET 1ffffb89 00038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
511MB LOWMEM available.
mapped low ram: 0 - 1fffe000
low ram: 0 - 1fffe000
Zone ranges:
DMA [mem 0x00001000-0x00ffffff]
Normal [mem 0x01000000-0x1fffdfff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x00001000-0x0009efff]
node 0: [mem 0x00100000-0x1fffdfff]
Using APIC driver default
ACPI: PM-Timer IO Port: 0xb008
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x8086a201 base: 0xfed00000
smpboot: Allowing 1 CPUs, 0 hotplug CPUs
e820: [mem 0x20000000-0xfeffbfff] available for PCI devices
setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1
PERCPU: Embedded 13 pages/cpu #dfbed000 s30592 r0 d22656 u53248
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129948
Kernel command line: root=/dev/sda rw
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Initializing CPU#0
allocated 1048552 bytes of page_cgroup
please try 'cgroup_disable=memory' option if you don't want memory cgroups
Memory: 509692K/523888K available (4990K kernel code, 415K rwdata, 1928K rodata, 576K init, 452K bss, 14196K reserved)
virtual kernel memory layout:
fixmap : 0xfff16000 - 0xfffff000 ( 932 kB)
vmalloc : 0xe07fe000 - 0xfff14000 ( 503 MB)
lowmem : 0xc0000000 - 0xdfffe000 ( 511 MB)
.init : 0xc172b000 - 0xc17bb000 ( 576 kB)
.data : 0xc14dfc22 - 0xc172ae00 (2348 kB)
.text : 0xc1000000 - 0xc14dfc22 (4991 kB)
Checking if this processor honours the WP bit even in supervisor mode...Ok.
Preemptible hierarchical RCU implementation.
RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
NR_IRQS:2304 nr_irqs:256 16
console [ttyS0] enabled
tsc: Fast TSC calibration using PIT
tsc: Detected 3092.840 MHz processor
Calibrating delay loop (skipped), value calculated using timer frequency.. 6185.68 BogoMIPS (lpj=12371360)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Initializing cgroup subsys memory
Initializing cgroup subsys devices
Initializing cgroup subsys freezer
Initializing cgroup subsys blkio
Initializing cgroup subsys perf_event
mce: CPU supports 10 MCE banks
Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0
tlb_flushall_shift: 6
Freeing SMP alternatives memory: 24K (c17bb000 - c17c1000)
ACPI: Core revision 20130725
ACPI: All ACPI Tables successfully acquired
ftrace: allocating 25039 entries in 49 pages
Enabling APIC mode: Flat. Using 1 I/O APICs
..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
smpboot: CPU0: Intel QEMU Virtual CPU version 2.0.0 (fam: 06, model: 06, stepping: 03)
Performance Events: Broken PMU hardware detected, using software events only.
Failed to access perfctr msr (MSR c1 is 0)
Brought up 1 CPUs
smpboot: Total of 1 processors activated (6185.68 BogoMIPS)
devtmpfs: initialized
NET: Registered protocol family 16
cpuidle: using governor ladder
cpuidle: using governor menu
ACPI: bus type PCI registered
PCI: PCI BIOS revision 2.10 entry at 0xfd3c2, last bus=0
PCI: Using configuration type 1 for base access
pcimode=0x0
bio: create slab <bio-0> at 0
ACPI: Added _OSI(Module Device)
ACPI: Added _OSI(Processor Device)
ACPI: Added _OSI(3.0 _SCP Extensions)
ACPI: Added _OSI(Processor Aggregator Device)
ACPI: Interpreter enabled
ACPI: (supports S0 S5)
ACPI: Using IOAPIC for interrupt routing
PCI: Ignoring host bridge windows from ACPI; if necessary, use "pci=use_crs" and report a bug
ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
acpi PNP0A03:00: ACPI _OSC support notification failed, disabling PCIe ASPM
acpi PNP0A03:00: Unable to request _OSC control (_OSC support mask: 0x08)
acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [bus 00-ff]
pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffff]
pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
pci 0000:00:01.3: quirk: [io 0xb100-0xb10f] claimed by PIIX4 SMB
ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
ACPI: PCI Interrupt Link [LNKS] (IRQs *9)
ACPI: Enabled 16 GPEs in block 00 to 0F
vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
vgaarb: loaded
vgaarb: bridge control possible 0000:00:02.0
SCSI subsystem initialized
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti#linux.it>
PTP clock support registered
PCI: Using ACPI for IRQ routing
NET: Registered protocol family 8
NET: Registered protocol family 20
HPET: 3 timers in total, 0 timers will be used for per-cpu timer
hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
hpet0: 3 comparators, 64-bit 100.000000 MHz counter
Switched to clocksource hpet
pnp: PnP ACPI init
ACPI: bus type PNP registered
pnp: PnP ACPI: found 8 devices
ACPI: bus type PNP unregistered
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 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.
pci 0000:00:00.0: Limiting direct PCI/PCI transfers
pci 0000:00:01.0: PIIX3: Enabling Passive Release
pci 0000:00:01.0: Activating ISA DMA hang workarounds
ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11
NatSemi SCx200 Driver
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Registering unionfs 2.6 (for 3.12.26)
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
Installing knfsd (copyright (C) 1996 okir#monad.swb.de).
NTFS driver 2.1.30 [Flags: R/W].
jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
fuse init (API version 7.22)
msgmni has been set to 995
alg: No test for stdrng (krng)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 38, base_baud = 921600) is a 16550A
Linux agpgart interface v0.103
[drm] Initialized drm 1.1.0 20060810
SCSI Media Changer driver v0.25
physmap platform flash device: 08000000 at c0000000
physmap-flash physmap-flash.0: map_probe failed
Intel(R) SPI FLASH CONTROLLER Driver built on Mar 8 2017 # 15:45:49
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk#qualcomm.com>
Intel (R) UDMA Driver - 1.0.0
Copyright (c) 2012 Intel Corperation.
UDMA Network Device Driver init
e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
e100: Copyright(c) 1999-2006 Intel Corporation
e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
e1000: Copyright (c) 1999-2006 Intel Corporation.
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 10
GBE working in Real Phy Mode
e1000 0000:00:03.0 eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56
e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
GBE working in Real Phy Mode
e1000 0000:00:04.0 eth1: (PCI:33MHz:32-bit) 52:54:00:12:34:57
e1000 0000:00:04.0 eth1: Intel(R) PRO/1000 Network Connection
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
GBE working in Real Phy Mode
tsc: Refined TSC clocksource calibration: 3092.828 MHz
Switched to clocksource tsc
e1000 0000:00:05.0 eth2: (PCI:33MHz:32-bit) 52:54:00:12:34:58
e1000 0000:00:05.0 eth2: Intel(R) PRO/1000 Network Connection
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
GBE working in Real Phy Mode
e1000 0000:00:06.0 eth3: (PCI:33MHz:32-bit) 52:54:00:12:34:59
e1000 0000:00:06.0 eth3: Intel(R) PRO/1000 Network Connection
GBE working in Real Phy Mode
e1000 0000:00:07.0 eth4: (PCI:33MHz:32-bit) 52:54:00:12:34:5a
e1000 0000:00:07.0 eth4: Intel(R) PRO/1000 Network Connection
GBE working in Real Phy Mode
e1000 0000:00:08.0 eth5: (PCI:33MHz:32-bit) 52:54:00:12:34:5b
e1000 0000:00:08.0 eth5: Intel(R) PRO/1000 Network Connection
GBE working in Real Phy Mode
e1000 0000:00:09.0 eth6: (PCI:33MHz:32-bit) 52:54:00:12:34:5c
e1000 0000:00:09.0 eth6: Intel(R) PRO/1000 Network Connection
e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
e1000e: Copyright(c) 1999 - 2013 Intel Corporation.
ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 3.15.1-k
ixgbe: Copyright (c) 1999-2013 Intel Corporation.
ixgb: Intel(R) PRO/10GbE Network Driver - version 1.0.135-k2-NAPI
ixgb: Copyright (c) 1999-2008 Intel Corporation.
PPP generic driver version 2.4.2
NET: Registered protocol family 24
i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mousedev: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input2
rtc_cmos 00:00: RTC can wake from S4
rtc_cmos 00:00: rtc core: registered rtc_cmos as rtc0
rtc_cmos 00:00: alarms up to one day, 114 bytes nvram, hpet irqs
softdog: Software Watchdog Timer: 0.08 initialized. soft_noboot=0 soft_margin=60 sec soft_panic=0 (nowayout=0)
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
oprofile: using NMI interrupt.
IPv4 over IPSec tunneling driver
TCP: cubic registered
Initializing XFRM netlink socket
NET: Registered protocol family 10
mip6: Mobile IPv6
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
8021q: 802.1Q VLAN Support v1.8
sctp: Hash tables configured (established 16384 bind 16384)
lib80211: common routines for IEEE802.11 drivers
Key type dns_resolver registered
Using IPI No-Shortcut mode
registered taskstats version 1
rtc_cmos 00:00: setting system clock to 2017-03-08 14:51:21 UTC (1488984681)
VFS: Cannot open root device "sda" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.17 #4
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
00000000 00000000 df45beec c14da955 df45bf34 df45bf04 c14da68e 00000000
df45bf34 fffffffa df75e000 df45bf60 c172bd4e c1605306 df45bf34 c16052b5
c1605282 c176906d df45bf34 fffffffa c16053a2 dffecbc0 00008000 6e6b6e75
Call Trace:
[<c14da955>] dump_stack+0x4b/0x7e
[<c14da68e>] panic+0x88/0x184
[<c172bd4e>] mount_block_root+0x17f/0x18f
[<c10e2a19>] ? SyS_mknod+0x1a/0x1c
[<c172be22>] mount_root+0xc4/0xce
[<c10e2b31>] ? SyS_unlink+0x15/0x17
[<c172bf3d>] prepare_namespace+0x111/0x142
[<c172ba87>] kernel_init_freeable+0x186/0x193
[<c14d7308>] kernel_init+0xd/0xb9
[<c14dea3b>] ret_from_kernel_thread+0x1b/0x30
[<c14d72fb>] ? rest_init+0x77/0x77
What is very weird is that I have the same version of OpenWRT system with a Linux 2.6.32 and it works well. Do I have additionnal kernel options to configure for linux 3.12.X for making it works with Qemu 2.0.0 ?
Thank you in advanced for your helps and comments.
There may be something wrong with your bin/x86/openwrt-x86-sgc_qemu-rootfs-ext4.img file. Where did you get that file from?
Also, you're specifying a disk device as the root filesystem for the kernel (root=/dev/sda) . This is wrong. You're suppose to specify a partition not a disk device. So you probably meant to say "root=/dev/sda1". It's safer to specify a UUID instead of a partition name (e.g. root=UUID=3552064b-7e4d-4e3a-ae48-943b333267d9 ) in case your root partition isn't actually /dev/sda1.
You can extract the UUID for your virtual root partition by creating loopback devices from your disk image:
losetup -P /dev/loop1 bin/x86/openwrt-x86-sgc_qemu-rootfs-ext4.img.
You should see new devices created called /dev/loop1p1 , /dev/loop1p2 , etc. Your virtual partition /dev/sda1 will be created as /dev/loop1p1, /dev/sda2 will be /dev/loop1p2 etc. You can then determine the UUID using parted or gparted on /dev/loop1
You may also need to specify something like "format=raw" in your qemu command, if the disk image is a raw disk image, or you may need to convert it first to a qcow2 image (qemu-image convert).
I'm attempting to get a persistent distribution (Linaro) on an SD card, up and running on the ZedBoard. I built the kernel from the linux-xlnx source, and have run into a number of issues during startup. I've managed to overcome most of the kernel hangs I've been experiencing at bootup, but I'm stuck at "Registering SWP/SWPB emulation handler".
I've noticed an option in the .config file "CONFIG_SWP_EMULATE=y", but even if I comment this out (and I don't know if I should be doing this anyway, to be honest), when I go to rebuild the kernel with "make UIMAGE_LOADADDR=0x8000 uImage", this line just gets re-enabled in the .config file for whatever reason, and the problem persists.
The original configuration was created using "make xilinx_zynq_defconfig". I then used "make menuconfig" to enable earlyprintk and low-level debugging in the kernel hacking menu (displaying the output on UART1). From there, I directly edited the .config file each time the kernel got stuck at some point. The notable changes from the "xilinx_zynq_defconfig" thus far are:
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_ZYNQ_UART1=y
CONFIG_EARLY_PRINTK=y
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_RTC_HCTOSYS is not set
CONFIG_ARM_THUMB=y
CONFIG_ARM_THUMBEE=y
Any suggestions on how to overcome this issue would be appreciated. Thank you in advance :)
U-Boot 2016.07-00057-g2931a7a-dirty (Nov 17 2016 - 02:58:29 -0500)
Model: Zynq Zed Development Board
Board: Xilinx Zynq
DRAM: ECC disabled 512 MiB
MMC: sdhci#e0100000: 0
SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
In: serial#e0001000
Out: serial#e0001000
Err: serial#e0001000
Model: Zynq Zed Development Board
Board: Xilinx Zynq
Net: ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
eth0: ethernet#e000b000
reading uEnv.txt
135 bytes read in 10 ms (12.7 KiB/s)
Importing environment from SD ...
Hit any key to stop autoboot: 0
Device: sdhci#e0100000
Manufacturer ID: 28
OEM: 4245
Name: 2$AGO
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 7.5 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
reading uEnv.txt
135 bytes read in 10 ms (12.7 KiB/s)
Loaded environment from uEnv.txt
Importing environment from SD ...
Copying Linux from SD to RAM...
## Booting kernel from Legacy Image at 02080000 ...
Image Name: Linux-4.6.0-xilinx-00040-g786228
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3828432 Bytes = 3.7 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 02020000
Booting using the fdt blob at 0x2020000
Loading Kernel Image ... OK
Loading Device Tree to 1eb0e000, end 1eb13595 ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 4.6.0-xilinx-00040-g7862283 (steven#sjk) (gcc version 4.9.2 (Sourcery CodeBench Lite 2015.05-17) ) #1 SMP PREEMPT Thu Nov 17 20:58:49 EST 2016
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: Zynq Zed Development Board
bootconsole [earlycon0] enabled
cma: Reserved 16 MiB at 0x1f000000
Memory policy: Data cache writealloc
On node 0 totalpages: 131072
free_area_init_node: node 0, pgdat c0938a80, node_mem_map debef000
Normal zone: 1024 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 131072 pages, LIFO batch:31
percpu: Embedded 12 pages/cpu #debcd000 s19776 r8192 d21184 u49152
pcpu-alloc: s19776 r8192 d21184 u49152 alloc=12*4096
pcpu-alloc: [0] 0 [0] 1
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
Kernel command line: console=ttyACM0,115200 debug root=/dev/mmcblk0p2 rw earlyprintk=serial,uart1,115200 rootfstype=ext4 rootwait devtmpfs.mount=0
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 494532K/524288K available (5303K kernel code, 229K rwdata, 1836K rodata, 1024K init, 221K bss, 13372K reserved, 16384K cma-reserved, 0K highmem)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc07f8d68 (8132 kB)
.init : 0xc0800000 - 0xc0900000 (1024 kB)
.data : 0xc0900000 - 0xc09397e0 ( 230 kB)
.bss : 0xc09397e0 - 0xc0970ee8 ( 222 kB)
Preemptible hierarchical RCU implementation.
Build-time adjustment of leaf fanout to 32.
RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=2
NR_IRQS:16 nr_irqs:16 16
efuse mapped to e0800000
slcr mapped to e0802000
L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
zynq_clock_init: clkc starts at e0802100
Zynq clock init
sched_clock: 64 bits at 333MHz, resolution 3ns, wraps every 4398046511103ns
clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x4ce07af025, max_idle_ns: 440795209040 ns
Switching to timer-based delay loop, resolution 3ns
clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 537538477 ns
timer #0 at e080a000, irq=17
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 666.66 BogoMIPS (lpj=3333333)
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
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x100000 - 0x100058
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (1333.33 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
cpuidle: using governor menu
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
zynq-ocm f800c000.ocmc: ZYNQ OCM pool: 256 KiB # 0xe0880000
zynq-pinctrl 700.pinctrl: zynq pinctrl initialized
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
media: Linux media interface: v0.10
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti#linux.it>
PTP clock support registered
EDAC MC: Ver: 3.0.0
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource arm_global_timer
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 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.
PCI: CLS 0 bytes, default 64
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
futex hash table entries: 512 (order: 3, 32768 bytes)
workingset: timestamp_bits=28 max_order=17 bucket_order=0
jffs2: version 2.2. (NAND) (SUMMARY) �© 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
dma-pl330 f8003000.dmac: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.dmac: DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
xdevcfg f8007000.devcfg: ioremap 0xf8007000 to e086c000
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
m25p80 spi0.0: found s25fl256s1, expected n25q128a11
m25p80 spi0.0: s25fl256s1 (32768 Kbytes)
5 ofpart partitions found on MTD device spi0.0
Creating 5 MTD partitions on "spi0.0":
0x000000000000-0x000000100000 : "qspi-fsbl-uboot"
0x000000100000-0x000000600000 : "qspi-linux"
0x000000600000-0x000000620000 : "qspi-device-tree"
0x000000620000-0x000000c00000 : "qspi-rootfs"
0x000000c00000-0x000001000000 : "qspi-bitstream"
CAN device driver interface
gpiod_set_value: invalid GPIO
libphy: MACB_mii_bus: probed
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 145 (00:0a:35:00:01:22)
Marvell 88E1510 e000b000.etherne:00: attached PHY driver [Marvell 88E1510] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)
e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
usbcore: registered new interface driver usb-storage
e0002000.usb supply vbus not found, using dummy regulator
ULPI transceiver vendor/product ID 0x0451/0x1507
Found TI TUSB1210 ULPI transceiver.
ULPI integrity check: passed.
ci_hdrc ci_hdrc.0: EHCI Host Controller
ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
EDAC MC: ECC not enabled
Xilinx Zynq CpuIdle Driver started
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: SDHCI controller on e0100000.sdhci [e0100000.sdhci] using DMA
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
mmc0: new high speed SDHC card at address 59b4
can: broadcast manager protocol (rev 20120528 t)
mmcblk0: mmc0:59b4 2$AGO 7.46 GiB
mmcblk0: p1 p2
can: netlink gateway (rev 20130117) max_hops=1
ThumbEE CPU extension supported.
Registering SWP/SWPB emulation handler
We have created, following the instruction on wiki-xilinx-linux web page, a system Zybo + embedded linux kernel (I want to remark that we didn't use PetaLinux but we have built all the file with the Xilinx tools).
When we turn on the system everything works fine and this is the output at the boot time:
U-Boot 2016.07-03720-g95e11f6-dirty (Oct 17 2016 - 02:56:48 -0700)
Model: Zynq ZYBO Development Board
Board: Xilinx Zynq
I2C: ready
DRAM: ECC disabled 512 MiB
MMC: sdhci#e0100000: 0
SF: Detected S25FL128S_64K with page size 256 Bytes, erase size 64 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
In: serial#e0001000
Out: serial#e0001000
Err: serial#e0001000
Model: Zynq ZYBO Development Board
Board: Xilinx Zynq
Net: ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
I2C EEPROM MAC address read failed
eth0: ethernet#e000b000
Hit any key to stop autoboot: 0
Device: sdhci#e0100000
Manufacturer ID: 3
OEM: 8368
Name: NCard
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 3.7 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
reading uEnv.txt
** Unable to read file uEnv.txt **
Copying Linux from SD to RAM...
reading uImage
3843104 bytes read in 367 ms (10 MiB/s)
reading devicetree.dtb
10331 bytes read in 17 ms (592.8 KiB/s)
reading uramdisk.image.gz
5310018 bytes read in 504 ms (10 MiB/s)
## Booting kernel from Legacy Image at 02080000 ...
Image Name: Linux-4.6.0-xilinx-22285-g0e4e40
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3843040 Bytes = 3.7 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 04000000 ...
Image Name:
Image Type: ARM Linux RAMDisk Image (gzip compressed)
Data Size: 5309954 Bytes = 5.1 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 02000000
Booting using the fdt blob at 0x2000000
Loading Kernel Image ... OK
Loading Ramdisk to 1e601000, end 1eb11602 ... OK
Loading Device Tree to 1e5fb000, end 1e60085a ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 4.6.0-xilinx-22285-g0e4e407-dirty (leonardo#ubuntu) (gcc version 4.9.2 (Sourcery CodeBench Lite 2015.05-17) ) #1 SMP PREEMPT Mon Oct 17 03:54:44 PDT 2016
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: xlnx,zynq-7000
bootconsole [earlycon0] enabled
cma: Reserved 16 MiB at 0x1f000000
Memory policy: Data cache writealloc
percpu: Embedded 12 pages/cpu #debcc000 s19776 r8192 d21184 u49152
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
Kernel command line: console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 489332K/524288K available (5304K kernel code, 230K rwdata, 1844K rodata, 1024K init, 222K bss, 18572K reserved, 16384K cma-reserved, 0K highmem)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc07fb004 (8141 kB)
.init : 0xc0800000 - 0xc0900000 (1024 kB)
.data : 0xc0900000 - 0xc0939b60 ( 231 kB)
.bss : 0xc0939b60 - 0xc09714e8 ( 223 kB)
Preemptible hierarchical RCU implementation.
Build-time adjustment of leaf fanout to 32.
RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=2
NR_IRQS:16 nr_irqs:16 16
efuse mapped to e0800000
slcr mapped to e0802000
L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
zynq_clock_init: clkc starts at e0802100
Zynq clock init
sched_clock: 64 bits at 325MHz, resolution 3ns, wraps every 4398046511103ns
clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x4af477f6aa, max_idle_ns: 440795207830 ns
Switching to timer-based delay loop, resolution 3ns
clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 551318127 ns
timer #0 at e080a000, irq=17
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 650.00 BogoMIPS (lpj=3250000)
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
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x100000 - 0x100058
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (1300.00 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
cpuidle: using governor menu
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
zynq-ocm f800c000.ocmc: ZYNQ OCM pool: 256 KiB # 0xe0880000
zynq-pinctrl 700.pinctrl: zynq pinctrl initialized
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
media: Linux media interface: v0.10
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti#linux.it>
PTP clock support registered
EDAC MC: Ver: 3.0.0
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource arm_global_timer
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 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.
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (no cpio magic); looks like an initrd
Freeing initrd memory: 5188K (de601000 - deb12000)
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
futex hash table entries: 512 (order: 3, 32768 bytes)
workingset: timestamp_bits=28 max_order=17 bucket_order=0
jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
dma-pl330 f8003000.dmac: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.dmac: DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 143, base_baud = 6250000) is a xuartps
�console [ttyPS0] enabled
console [ttyPS0] enabled
bootconsole [earlycon0] disabled
bootconsole [earlycon0] disabled
xdevcfg f8007000.devcfg: ioremap 0xf8007000 to e086c000
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
CAN device driver interface
libphy: MACB_mii_bus: probed
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 145 (00:0a:35:00:01:22)
RTL8211E Gigabit Ethernet e000b000.etherne:00: attached PHY driver [RTL8211E Gigabit Ethernet] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)
e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
usbcore: registered new interface driver usb-storage
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
EDAC MC: ECC not enabled
Xilinx Zynq CpuIdle Driver started
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: SDHCI controller on e0100000.sdhci [e0100000.sdhci] using DMA
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
Registering SWP/SWPB emulation handler
hctosys: unable to open rtc device (rtc0)
ALSA device list:
mmc0: new high speed SDHC card at address b368
No soundcards found.
mmcblk0: mmc0:b368 NCard 3.72 GiB
mmcblk0: p1 p2
RAMDISK: gzip image found at block 0
EXT4-fs warning (device ram0): ext4_update_dynamic_rev:746: updating to rev 1 because of new feature flag, running e2fsck is recommended
EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 1:0.
Starting rcS...
++ Mounting filesystem
mount: mounting /dev/mmcblk0p1 on /mnt failed: No such file or directory
mount: mounting /dev/mmcblk0 on /mnt failed: No such file or directory
++ Setting up mdev
++ Starting telnet daemon
++ Starting http daemon
++ Starting ftp daemon
++ Starting ssh daemon
random: sshd urandom read with 1 bits of entropy available
rcS Complete
zynq>
zynq>
zynq>
The problem is that, after some instructions, the system crash with this output:
zynq> EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 179:2.
Trying to move old root to /initrd ... /initrd does not exist. Ignored.
Unmounting old root
Trying to free ramdisk memory ... failed
devtmpfs: error mounting -2
Unable to handle kernel NULL pointer dereference at virtual address 00000020
pgd = c0004000
[00000020] *pgd=00000000
Internal error: Oops - BUG: 17 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 10 Comm: migration/0 Not tainted 4.6.0-xilinx-22285-g0e4e407-dirty #1
Hardware name: Xilinx Zynq Platform
task: de060040 ti: de06a000 task.ti: de06a000
PC is at set_section_perms+0x8c/0x110
LR is at set_section_perms+0x18/0x110
pc : [<c0113404>] lr : [<c0113390>] psr: 80000093
sp : de06bec0 ip : dc4f3018 fp : 00000600
r10: 00000000 r9 : 00000000 r8 : 00000001
r7 : 00000003 r6 : c0902468 r5 : 00000000 r4 : c0908508
r3 : 00000000 r2 : c0000000 r1 : 00000003 r0 : 00000009
Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
Control: 18c5387d Table: 1c4f804a DAC: 00000051
Process migration/0 (pid: 10, stack limit = 0xde06a210)
Stack: (0xde06bec0 to 0xde06c000)
bec0: c0908508 00000003 00000001 de0db780 de0db780 de0db998 00000003 c0908508
bee0: c09065c0 00000000 00000000 c01134f4 de04df70 00000001 a0000013 de04df84
bf00: 00000003 00000000 00000000 c011355c c011354c c017c420 de04df30 debccf64
bf20: de06a000 debccf68 00000000 c017c4f8 c017c478 de06a000 de02db40 c090cd94
bf40: 00000001 c0135454 de060040 de02d9c0 00000000 de02db40 c0135218 00000000
bf60: 00000000 c0132a40 4dff1176 00000001 00000000 de02db40 00000000 00030003
bf80: de06bf80 de06bf80 00000000 00000000 de06bf90 de06bf90 de06bfac de02d9c0
bfa0: c0132968 00000000 00000000 c0106ef8 00000000 00000000 00000000 00000000
bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 dfefe0f2 77e519c8
[<c0113404>] (set_section_perms) from [<c01134f4>] (update_sections_early+0x6c/0xc4)
[<c01134f4>] (update_sections_early) from [<c011355c>] (__fix_kernmem_perms+0x10/0x1c)
[<c011355c>] (__fix_kernmem_perms) from [<c017c420>] (multi_cpu_stop+0xb0/0x108)
[<c017c420>] (multi_cpu_stop) from [<c017c4f8>] (cpu_stopper_thread+0x80/0xb0)
[<c017c4f8>] (cpu_stopper_thread) from [<c0135454>] (smpboot_thread_fn+0x23c/0x254)
[<c0135454>] (smpboot_thread_fn) from [<c0132a40>] (kthread+0xd8/0xec)
[<c0132a40>] (kthread) from [<c0106ef8>] (ret_from_fork+0x14/0x3c)
Code: e1520003 2a00001b e5943014 e1a0baa2 (e599a020)
---[ end trace 07a0838423ee7708 ]---
note: migration/0[10] exited with preempt_count 2
It is clear that there is an error with the "mounted filesystem":
zynq> EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 179:2.
Trying to move old root to /initrd ... /initrd does not exist. Ignored.
Unmounting old root
Trying to free ramdisk memory ... failed
devtmpfs: error mounting -2
Why does this happen? Why before I can do everything with the system and, suddenly, I have a crash? Yes, the system crashes when I am doing nothing on it and not when I am working with it.
Are there some advice to solve this? to not to have anymore these crashes?
From the Linux Kernel Command line I can see "root=/dev/mmcblk0p2" and also the target is started with initial ramdisk image "uramdisk.image.gz". So the init process or scripts inside ramdisk image should be responsible to mount the real file system from SD i.e. from /dev/mmcblk0p2 and remove the used memory of ramdisk. To narrow down the problem, you need to analyze the steps taken in ramdisk image to mount the real filesystem and make sure you have the proper RFS flashed inside SD in /dev/mmcblk0p2. I can also seen some missing directories to mount the /dev/mmcblk0p1 and /dev/mmcblk0.
++ Mounting filesystem
mount: mounting /dev/mmcblk0p1 on /mnt failed: No such file or directory
mount: mounting /dev/mmcblk0 on /mnt failed: No such file or directory
In simple words, check the init scripts inside the ramdisk image and make sure the RFS is mounted properly.
I am working on building an linux for powerpc 8641d board. My U-boot has been modified to recognize 1 GB of memory(RAM) and it does. But Linux 2.6.28 crashes when mem=1024M is passed as boot parameter from u-boot. I have specified the memory size as 0x40000000 (1GB) in DTS file. Can any one help me to findout the reason?
But the same Linux image works when I specify bootargs as 'mem=256M'. But OS idetifies the total memory of 256MB only but I want it to identify complete 1GB memory.
Here is the dump of linux boot: ** It hangs at this point:
CPU: 8641D, Version: 3.0, (0x80900130)
Core: E600 Core 0, Version: 2.2, (0x80040202)
Clock Configuration:
CPU:1000 MHz, MPX:400 MHz
DDR:200 MHz (400 MT/s data rate), LBC:25 MHz
L1: D-cache 32 KB enabled
I-cache 32 KB enabled
L2: 512 KB enabled
Board: Wind River SBC8641D
I2C: ready
DRAM: DDR: 1 GiB
FLASH: 16 MiB
PCI-EXPRESS 1: Configured as Host
IGAPS: PCIE link is Up
Scanning PCI bus 01
01 00 10cf 2034 0380 ff
PCI-EXPRESS 1 on bus 00 - 01
PCI-EXPRESS 2: Disabled
In: serial
Out: serial
Err: serial
IGAPS: Interrupts enabled...!!!!
Net: eTSEC1, eTSEC2, eTSEC3, eTSEC4
Hit any key to stop autoboot: 0
=> bootm 1000000 - 2000000
WARNING: adjusting available memory to 30000000
## Booting kernel from Legacy Image at 01000000 ...
Image Name: Linux-2.6.28
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 2417424 Bytes = 2.3 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 02000000
Booting using the fdt blob at 0x2000000
Uncompressing Kernel Image ... OK
Loading Device Tree to 007fb000, end 007ffb2d ... OK
WARNING: your dts/dtb is old. You must update before the next kernel release
Using MPC86xx HPCN machine description
Total memory = 1024MB; using 2048kB for hash table (at cfe00000)
Linux version 2.6.28 (TCS#localhost) (gcc version 4.5.4 (Buildroot 2012.11.1) ) #42 SMP Tue Aug 20 22:32:49 IST 2013
CPU maps initialized for 1 thread per core
console [udbg0] enabled
setup_arch: bootmem
mpc86xx_hpcn_setup_arch()
Found FSL PCI host bridge at 0x00000000f8008000. Firmware bus number: 0->1
Zone PFN ranges:
DMA 0x00000000 -> 0x00030000
Normal 0x00030000 -> 0x00030000
HighMem 0x00030000 -> 0x00040000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
0: 0x00000000 -> 0x00040000
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096
Kernel command line: console=ttyS0,115200 mem=1024M ip=172.19.180.10:172.19.180.30:172.19.180.1:255.255.255.0:sbc8641d:eth0:off rw root=/dev/nfs nfsroot=172.19.180.30:/opt/nfsRootfs
PID hash table entries: 4096 (order: 12, 16384 bytes)
clocksource: timebase mult[2800000] shift[22] registered
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1031376k/1048576k available (4632k kernel code, 16396k reserved, 144k data, 175k bss, 208k init)
Any reason why it hangs here?