doc/notes.org

   1 * uboot settings
   2
   3  set ipaddr 192.168.2.3
   4  set netmask 255.255.255.0
   5  set serverip 192.168.2.2
   6  set imagefile ryu/uImage
   7  set devicetreefile ryu/shark-ryu.dtb
   8  set nfspath /srv/nfs/root-shark
   9  set bootcmd_tftpnfs_static 'tftp 800000 ${imagefile}; tftp 7f0000 ${devicetreefile}; set bootargs ${linux_console} root=/dev/nfs nfsroot=${serverip}:${nfspath} rw ip=${ipaddr}; mw f0000b00 ${psc_cfg}; bootm 800000 - 7f0000'
  10  set bootcmd 'run bootcmd_tftpnfs_static'
  11
  12 * Questions
  13 ** Why crc modification alone does not produce an error and is not returned by cangw -L?
  14 * Kernel oops
  15 ** Linux-2.6.33.7-00005-ge2f49b5
  16 Unable to handle kernel paging request for instruction fetch
  17 Faulting instruction address: 0x8d56acc4
  18 Oops: Kernel access of bad area, sig: 11 [#1]
  19 PREEMPT Shark
  20 Modules linked in:
  21 NIP: 8d56acc4 LR: c0260208 CTR: 8d56acc7
  22 REGS: c03f3bc0 TRAP: 0400   Not tainted  (2.6.33.7-00005-ge2f49b5)
  23 MSR: 20009032 <EE,ME,IR,DR>  CR: 24008028  XER: 0000005f
  24 TASK = c03d5478[0] 'swapper' THREAD: c03f2000
  25 GPR00: 8d56acc7 c03f3c70 c03d5478 c7990160 c78d54ad 00000048 c79901a4 00000002
  26 GPR08: 000000e0 00000000 00000001 00000002 44000022 7f33ff4e 80000000 00000042
  27 GPR16: 00000008 20000000 c909e900 00000001 c03f3d78 c79326e0 00000008 c799dc1c
  28 GPR24: c7976800 c78d54f9 c7949828 c7a06620 c03f2000 c7990160 c78d54ad c03f3c70
  29 NIP [8d56acc4] 0x8d56acc4
  30 LR [c0260208] dev_queue_xmit+0x2f0/0x588
  31 Call Trace:
  32 [c03f3c70] [c025ff74] dev_queue_xmit+0x5c/0x588 (unreliable)
  33 [c03f3ca0] [c02d62d8] can_send+0x9c/0x1a0
  34 [c03f3cc0] [c02d97a8] can_can_gw_rcv+0x108/0x164
  35 [c03f3cf0] [c02d52ac] can_rcv_filter+0x240/0x2e8
  36 [c03f3d10] [c02d541c] can_rcv+0xc8/0x140
  37 [c03f3d30] [c025e968] netif_receive_skb+0x2ac/0x350
  38 [c03f3d70] [c020a230] mscan_rx_poll+0x1c0/0x464
  39 [c03f3dd0] [c025f428] net_rx_action+0x104/0x22c
  40 [c03f3e20] [c00345e0] __do_softirq+0x10c/0x21c
  41 [c03f3e70] [c00075d0] do_softirq+0x58/0x74
  42 [c03f3e80] [c0034300] irq_exit+0x8c/0xbc
  43 [c03f3e90] [c00076c8] do_IRQ+0xdc/0x188
  44 [c03f3ec0] [c0014db0] ret_from_except+0x0/0x14
  45 --- Exception: 501 at cpu_idle+0x104/0x114
  46     LR = cpu_idle+0x104/0x114
  47 [c03f3f80] [c000aefc] cpu_idle+0x68/0x114 (unreliable)
  48 [c03f3fa0] [c0003f40] rest_init+0xa4/0xc4
  49 [c03f3fc0] [c039f918] start_kernel+0x2e4/0x2fc
  50 [c03f3ff0] [00003438] 0x3438
  51 Instruction dump:
  52 XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  53 XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  54 Kernel panic - not syncing: Fatal exception in interrupt
  55 Call Trace:
  56 [c03f3ab0] [c0009cdc] show_stack+0x70/0x1d4 (unreliable)
  57 [c03f3b00] [c02ff5ec] dump_stack+0x2c/0x44
  58 [c03f3b10] [c02ff6b0] panic+0xac/0x19c
  59 [c03f3b60] [c0011df8] die+0x188/0x1a4
  60 [c03f3b90] [c00165c8] bad_page_fault+0x90/0xe0
  61 [c03f3bb0] [c0014bb8] handle_page_fault+0x7c/0x80
  62 --- Exception: 400 at 0x8d56acc4
  63     LR = dev_queue_xmit+0x2f0/0x588
  64 [c03f3c70] [c025ff74] dev_queue_xmit+0x5c/0x588 (unreliable)
  65 [c03f3ca0] [c02d62d8] can_send+0x9c/0x1a0
  66 [c03f3cc0] [c02d97a8] can_can_gw_rcv+0x108/0x164
  67 [c03f3cf0] [c02d52ac] can_rcv_filter+0x240/0x2e8
  68 [c03f3d10] [c02d541c] can_rcv+0xc8/0x140
  69 [c03f3d30] [c025e968] netif_receive_skb+0x2ac/0x350
  70 [c03f3d70] [c020a230] mscan_rx_poll+0x1c0/0x464
  71 [c03f3dd0] [c025f428] net_rx_action+0x104/0x22c
  72 [c03f3e20] [c00345e0] __do_softirq+0x10c/0x21c
  73 [c03f3e70] [c00075d0] do_softirq+0x58/0x74
  74 [c03f3e80] [c0034300] irq_exit+0x8c/0xbc
  75 [c03f3e90] [c00076c8] do_IRQ+0xdc/0x188
  76 [c03f3ec0] [c0014db0] ret_from_except+0x0/0x14
  77 --- Exception: 501 at cpu_idle+0x104/0x114
  78     LR = cpu_idle+0x104/0x114
  79 [c03f3f80] [c000aefc] cpu_idle+0x68/0x114 (unreliable)
  80 [c03f3fa0] [c0003f40] rest_init+0xa4/0xc4
  81 [c03f3fc0] [c039f918] start_kernel+0x2e4/0x2fc
  82 [c03f3ff0] [00003438] 0x3438
  83 Rebooting in 180 seconds..