MPC8641 based custom board kernel Bug
Sri Ram Vemulpali
sri.ram.gmu06 at gmail.com
Thu Dec 26 17:51:29 EST 2013
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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