[Qemu-devel] [Bug 1015226] Re: arm realview pbx hung

[Peter Maydell]

I'm afraid you'll need to at least provide a copy of your kernel and
initrd if you want anybody to try to debug this.


** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1015226

Title:
  arm realview pbx hung

Status in QEMU:
  Incomplete

Bug description:
  host(pc):ubuntu 10.1
  qemu:qemu-1.1.0-1
  target:realview-pbx-a9
  kernel:2.6.34.10
  gcc:4.4.6

  command line, and output as follow:
  -----------------------------------------
  address@hidden:~/qemu$ qemu-system-arm -M realview-pbx-a9 -kernel 
~/emb_linux/trunk/bsp/versatile_qemu/kernel/linux-2.6.34.10/arch/arm/boot/zImage
 -initrd rootfs.ext2 -nographic -append "console=ttyAMA0 earlyprintk"
  Uncompressing Linux... done, booting the kernel.
  Linux version 2.6.34.10 (address@hidden) (gcc version 4.4.6 (crosstool-NG 
1.13.2 - hsan-5115) ) #40 SMP Tue Jun 19 18:53:13 BST 2012
  CPU: ARMv7 Processor [410fc090] revision 0 (ARMv7), cr=10c53c7f
  CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
  Machine: ARM-RealView PBX
  Ignoring unrecognised tag 0x00000000
  bootconsole [earlycon0] enabled
  Memory policy: ECC disabled, Data cache writealloc
  Ignoring RAM at 80000000-8fffffff (vmalloc region overlap).
  realview_pbx_map_io:117
  realview_pbx_map_io:119
  >>>>>>>>>hung here
  QEMU: Terminated
  -----------------------------------------

  modify code to add some debug info
  -----------------------------------------
  arch/arm/mach-realview/realview_pbx.c
  line 115:
  static void __init realview_pbx_map_io(void)
  {
  printk("%s:%d\r\n", __FUNCTION__, __LINE__);
          iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
  printk("%s:%d\r\n", __FUNCTION__, __LINE__);            //!!!!!!! the last 
printk output
          if (core_tile_pbx11mp() || core_tile_pbxa9mp())   //!!!!!!! hung here 
(here is a read to system control register 0x100000XX) !!!!!!
  {
  printk("%s:%d\r\n", __FUNCTION__, __LINE__);
                  iotable_init(realview_local_io_desc, 
ARRAY_SIZE(realview_local_io_desc));
  printk("%s:%d\r\n", __FUNCTION__, __LINE__);
  }
  }
  -----------------------------------------

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