MPC8641 based custom board kernel Bug
Ashish Khetan
curieux.khetan at gmail.com
Fri Dec 27 00:20:00 EST 2013
I am using the defconfig from linux kernel tree and for CCSR in u-boot its
F8000000 so the same i am using in device tree... so my question is - is it
unable to parse device tree ? or in device tree some thing need to modify
in device tree or in kernel source...
please give some light on this...
Thanks & Regards
Ashish Khetan
On Fri, Dec 27, 2013 at 4:21 AM, Sri Ram Vemulpali
<sri.ram.gmu06 at gmail.com>wrote:
> Why do not you use deconfig from linux kernel tree. Modify only base
> address of CCSR (soc node) for child nodes of root in device tree.
> arch/powerpc/boot/dts/mpc8641_hpcn.dts.
>
> Sri
>
>
> On Thu, Dec 26, 2013 at 3:48 AM, Ashish Khetan <curieux.khetan at gmail.com>wrote:
>
>> i tried to dig more inside mpic_alloc fails. the function
>> of_find_matching_node calls inside from mpic_alloc() should return the node
>> at which pic is connected but it returns NULL. but why? In device tree i am
>> using the following.. may be it will helpful.
>> /dts-v1/;
>>
>> / {
>> model = "MPC8641HPCN";
>> compatible = "fsl,mpc8641hpcn";
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>>
>> aliases {
>> ethernet0 = "/soc8641 at f8000000/ethernet at 24000";
>> ethernet1 = "/soc8641 at f8000000/ethernet at 25000";
>> ethernet2 = "/soc8641 at f8000000/ethernet at 26000";
>> ethernet3 = "/soc8641 at f8000000/ethernet at 27000";
>> serial0 = "/soc8641 at f8000000/serial at 4500";
>> };
>>
>> cpus {
>> #address-cells = <0x1>;
>> #size-cells = <0x0>;
>>
>> PowerPC,8641 at 0 {
>> device_type = "cpu";
>> reg = <0x0>;
>> d-cache-line-size = <0x20>;
>> i-cache-line-size = <0x20>;
>> d-cache-size = <0x8000>;
>> i-cache-size = <0x8000>;
>> timebase-frequency = <0x0>;
>> bus-frequency = <0x0>;
>> clock-frequency = <0x0>;
>> };
>> };
>>
>> memory {
>> device_type = "memory";
>> reg = <0x0 0x20000000>;
>> };
>>
>> localbus at f8005000 {
>> #address-cells = <0x2>;
>> #size-cells = <0x1>;
>> compatible = "fsl,mpc8641-localbus", "simple-bus";
>> reg = <0xf8005000 0x1000>;
>> interrupts = <0x13 0x2>;
>> interrupt-parent = <0x1>;
>> ranges = <0x0 0x0 0xff000000 0x1000000>;
>>
>> flash at 0,0 {
>> compatible = "cfi-flash";
>> reg = <0x0 0x0 0x800000>;
>> bank-width = <0x2>;
>> device-width = <0x2>;
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> };
>> };
>>
>> soc8641 at f8000000 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> device_type = "soc";
>> compatible = "simple-bus";
>> ranges = <0x0 0xf8000000 0x100000>;
>> bus-frequency = <0x0>;
>>
>> mcm-law at 0 {
>> compatible = "fsl,mcm-law";
>> reg = <0x0 0x1000>;
>> fsl,num-laws = <0xa>;
>> };
>>
>> mcm at 1000 {
>> compatible = "fsl,mpc8641-mcm", "fsl,mcm";
>> reg = <0x1000 0x1000>;
>> interrupts = <0x11 0x2>;
>> interrupt-parent = <0x1>;
>> };
>>
>> dma at 21300 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> compatible = "fsl,mpc8641-dma", "fsl,eloplus-dma";
>> reg = <0x21300 0x4>;
>> ranges = <0x0 0x21100 0x200>;
>> cell-index = <0x0>;
>>
>> dma-channel at 0 {
>> compatible = "fsl,mpc8641-dma-channel",
>> "fsl,eloplus-dma-channel";
>> reg = <0x0 0x80>;
>> cell-index = <0x0>;
>> interrupt-parent = <0x1>;
>> interrupts = <0x14 0x2>;
>> };
>>
>> dma-channel at 80 {
>> compatible = "fsl,mpc8641-dma-channel",
>> "fsl,eloplus-dma-channel";
>> reg = <0x80 0x80>;
>> cell-index = <0x1>;
>> interrupt-parent = <0x1>;
>> interrupts = <0x15 0x2>;
>> };
>>
>> dma-channel at 100 {
>> compatible = "fsl,mpc8641-dma-channel",
>> "fsl,eloplus-dma-channel";
>> reg = <0x100 0x80>;
>> cell-index = <0x2>;
>> interrupt-parent = <0x1>;
>> interrupts = <0x16 0x2>;
>> };
>>
>> dma-channel at 180 {
>> compatible = "fsl,mpc8641-dma-channel",
>> "fsl,eloplus-dma-channel";
>> reg = <0x180 0x80>;
>> cell-index = <0x3>;
>> interrupt-parent = <0x1>;
>> interrupts = <0x17 0x2>;
>> };
>> };
>>
>> ethernet at 24000 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> cell-index = <0x0>;
>> device_type = "network";
>> model = "TSEC";
>> compatible = "gianfar";
>> reg = <0x24000 0x1000>;
>> ranges = <0x0 0x24000 0x1000>;
>> local-mac-address = [00 00 00 00 00 00];
>> interrupts = <0x1d 0x2 0x1e 0x2 0x22 0x2>;
>> interrupt-parent = <0x1>;
>> tbi-handle = <0x2>;
>> phy-handle = <0x3>;
>> phy-connection-type = "rgmii-id";
>>
>> mdio at 520 {
>> #address-cells = <0x1>;
>> #size-cells = <0x0>;
>> compatible = "fsl,gianfar-mdio";
>> reg = <0x520 0x20>;
>>
>> ethernet-phy at 0 {
>> interrupt-parent = <0x1>;
>> interrupts = <0xa 0x1>;
>> reg = <0x0>;
>> device_type = "ethernet-phy";
>> linux,phandle = <0x3>;
>> };
>>
>> ethernet-phy at 1 {
>> interrupt-parent = <0x1>;
>> interrupts = <0xa 0x1>;
>> reg = <0x1>;
>> device_type = "ethernet-phy";
>> linux,phandle = <0x5>;
>> };
>>
>> ethernet-phy at 2 {
>> interrupt-parent = <0x1>;
>> interrupts = <0xa 0x1>;
>> reg = <0x2>;
>> device_type = "ethernet-phy";
>> linux,phandle = <0x7>;
>> };
>>
>> ethernet-phy at 3 {
>> interrupt-parent = <0x1>;
>> interrupts = <0xa 0x1>;
>> reg = <0x3>;
>> device_type = "ethernet-phy";
>> linux,phandle = <0x9>;
>> };
>>
>> tbi-phy at 11 {
>> reg = <0x11>;
>> device_type = "tbi-phy";
>> linux,phandle = <0x2>;
>> };
>> };
>> };
>>
>> ethernet at 25000 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> cell-index = <0x1>;
>> device_type = "network";
>> model = "TSEC";
>> compatible = "gianfar";
>> reg = <0x25000 0x1000>;
>> ranges = <0x0 0x25000 0x1000>;
>> local-mac-address = [00 00 00 00 00 00];
>> interrupts = <0x23 0x2 0x24 0x2 0x28 0x2>;
>> interrupt-parent = <0x1>;
>> tbi-handle = <0x4>;
>> phy-handle = <0x5>;
>> phy-connection-type = "rgmii-id";
>>
>> mdio at 520 {
>> #address-cells = <0x1>;
>> #size-cells = <0x0>;
>> compatible = "fsl,gianfar-tbi";
>> reg = <0x520 0x20>;
>>
>> tbi-phy at 11 {
>> reg = <0x11>;
>> device_type = "tbi-phy";
>> linux,phandle = <0x4>;
>> };
>> };
>> };
>>
>> ethernet at 26000 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> cell-index = <0x2>;
>> device_type = "network";
>> model = "TSEC";
>> compatible = "gianfar";
>> reg = <0x26000 0x1000>;
>> ranges = <0x0 0x26000 0x1000>;
>> local-mac-address = [00 00 00 00 00 00];
>> interrupts = <0x1f 0x2 0x20 0x2 0x21 0x2>;
>> interrupt-parent = <0x1>;
>> tbi-handle = <0x6>;
>> phy-handle = <0x7>;
>> phy-connection-type = "rgmii-id";
>>
>> mdio at 520 {
>> #address-cells = <0x1>;
>> #size-cells = <0x0>;
>> compatible = "fsl,gianfar-tbi";
>> reg = <0x520 0x20>;
>>
>> tbi-phy at 11 {
>> reg = <0x11>;
>> device_type = "tbi-phy";
>> linux,phandle = <0x6>;
>> };
>> };
>> };
>>
>> ethernet at 27000 {
>> #address-cells = <0x1>;
>> #size-cells = <0x1>;
>> cell-index = <0x3>;
>> device_type = "network";
>> model = "TSEC";
>> compatible = "gianfar";
>> reg = <0x27000 0x1000>;
>> ranges = <0x0 0x27000 0x1000>;
>> local-mac-address = [00 00 00 00 00 00];
>> interrupts = <0x25 0x2 0x26 0x2 0x27 0x2>;
>> interrupt-parent = <0x1>;
>> tbi-handle = <0x8>;
>> phy-handle = <0x9>;
>> phy-connection-type = "rgmii-id";
>>
>> mdio at 520 {
>> #address-cells = <0x1>;
>> #size-cells = <0x0>;
>> compatible = "fsl,gianfar-tbi";
>> reg = <0x520 0x20>;
>>
>> tbi-phy at 11 {
>> reg = <0x11>;
>> device_type = "tbi-phy";
>> linux,phandle = <0x8>;
>> };
>> };
>> };
>>
>> serial at 4500 {
>> cell-index = <0x0>;
>> device_type = "serial";
>> compatible = "ns16550";
>> reg = <0x4500 0x100>;
>> clock-frequency = <0x0>;
>> interrupts = <0x2a 0x2>;
>> interrupt-parent = <0x1>;
>> };
>>
>> pic at 40000 {
>> interrupt-controller;
>> #address-cells = <0x0>;
>> #interrupt-cells = <0x2>;
>> reg = <0x40000 0x40000>;
>> compatible = "chrp,open-pic";
>> device_type = "open-pic";
>> linux,phandle = <0x1>;
>> phandle = <0x1>;
>> };
>>
>> global-utilities at e0000 {
>> compatible = "fsl,mpc8641-guts";
>> reg = <0xe0000 0x1000>;
>> fsl,has-rstcr;
>> };
>> };
>>
>> chosen {
>> linux,stdout-path = "/soc8641/serial0: serial at 4500";
>> };
>> };
>>
>>
>>
>>
>> On Thu, Dec 26, 2013 at 2:37 PM, wyang <w90p710 at gmail.com> wrote:
>>
>>> On 12/26/2013 01:09 PM, Ashish Khetan wrote:
>>>
>>> Hi,
>>> I was trying to port Linux-3.12 for MPC8641 based custom designed board
>>> for evaluation purpose. I have been facing a kernel bug at mpic
>>> initialization. Is somebody have faced this kind of bugs or can give me any
>>> pointer for further steps how to solve kernel bugs will be really helpful.
>>> here is the snapshot for the bug that may be helpful to address the bug.
>>> Using MPC86xx HPCN machine description
>>> Total memory = 512MB; using 1024kB for hash table (at cff00000)
>>> Linux version 3.12.0 (ashish at ashish-VirtualBox) (gcc version 4.7.2
>>> (GCC) ) #2 We
>>> d Dec 25 16:04:36 IST 2013
>>> Found initrd at 0xde975000:0xdfec428a
>>> bootconsole [udbg0] enabled
>>> setup_arch: bootmem
>>> mpc86xx_hpcn_setup_arch()
>>> MPC86xx HPCN board from Freescale Semiconductor
>>> arch: exit
>>> Zone ranges:
>>> DMA [mem 0x00000000-0x1fffffff]
>>> Normal empty
>>> HighMem empty
>>> Movable zone start for each node
>>> Early memory node ranges
>>> node 0: [mem 0x00000000-0x1fffffff]
>>> Built 1 zonelists in Zone order, mobility grouping on. Total pages:
>>> 130048
>>> Kernel command line: root=/dev/ram0 rw rootfs console=ttyS0,115200
>>> 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)
>>> Sorting __ex_table...
>>> Memory: 424980K/524288K available (4172K kernel code, 208K rwdata, 1304K
>>> rodata,
>>> 196K init, 149K bss, 99308K reserved, 0K highmem)
>>> Kernel virtual memory layout:
>>> * 0xfffcf000..0xfffff000 : fixmap
>>> * 0xff800000..0xffc00000 : highmem PTEs
>>> * 0xff7fe000..0xff800000 : early ioremap
>>> * 0xe1000000..0xff7fe000 : vmalloc & ioremap
>>> SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
>>> NR_IRQS:512 nr_irqs:512 16
>>> ------------[ cut here ]------------
>>> kernel BUG at arch/powerpc/platforms/86xx/pic.c:42!
>>>
>>>
>>> It hints that mpic_alloc() fails. Maybe, you should spend some time
>>> investigating why it fails. :-)
>>>
>>> Thanks
>>> Wei
>>>
>>> Oops: Exception in kernel mode, sig: 5 [#1]
>>> MPC86xx HPCN
>>> Modules linked in:
>>> CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0 #2
>>> task: c05903e0 ti: c05b4000 task.ti: c05b4000
>>> NIP: c0567438 LR: c0567430 CTR: c0567400
>>> REGS: c05b5ee0 TRAP: 0700 Not tainted (3.12.0)
>>> MSR: 00021032 <ME,IR,DR,RI> CR: 24000042 XER: 20000000
>>>
>>> GPR00: c0567430 c05b5f90 c05903e0 00000000 c04e4ff8 c051e588 0000008f
>>> 00000002
>>> GPR08: c042789c 00000001 0000006f 00000000 22000048 bebffffd 11a7b4e5
>>> 200c8000
>>> GPR16: ffbeffff ffffffff 00000000 00000024 00000000 1fec56f8 1fec59a7
>>> 00000000
>>> GPR24: 00000000 1fff97e8 40000000 1ffcc6a0 c0bff080 c05c2490 c05c2628
>>> c0585b60
>>> NIP [c0567438] mpc86xx_init_irq+0x38/0x108
>>> LR [c0567430] mpc86xx_init_irq+0x30/0x108
>>> Call Trace:
>>> [c05b5f90] [c0567430] mpc86xx_init_irq+0x30/0x108 (unreliable)
>>> [c05b5fb0] [c0562784] init_IRQ+0x24/0x38
>>> [c05b5fc0] [c055fde4] start_kernel+0x1bc/0x2ec
>>> [c05b5ff0] [00003444] 0x3444
>>> Instruction dump:
>>> 3d00c04f 38800000 38a01002 38c00000 38e00100 39088f8c 38600000 90010024
>>> bfa10014 4bffec35 7c690034 5529d97e <0f090000> 3fa0c04f 4bfff391 38600000
>>> ---[ end trace 31fd0ba7d8756001 ]---
>>>
>>> Kernel panic - not syncing: Attempted to kill the idle task!
>>> Rebooting in 180 seconds..
>>>
>>>
>>> Thanks & Regards
>>> Ashish Khetan
>>>
>>>
>>> _______________________________________________
>>> Linuxppc-dev mailing listLinuxppc-dev at lists.ozlabs.orghttps://lists.ozlabs.org/listinfo/linuxppc-dev
>>>
>>>
>>>
>>
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>>
>
>
> --
> Regards,
> Sri.
>
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