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RE: [microblaze-uclinux] [PATCH] return from interrupt.

To: <microblaze-uclinux@xxxxxxxxxxxxxx>
Subject: RE: [microblaze-uclinux] [PATCH] return from interrupt.
From: "Brettschneider Falk" <fbrettschneider@xxxxxxxxxxxxxxx>
Date: Tue, 13 Nov 2007 19:42:47 +0100
Reply-to: microblaze-uclinux@xxxxxxxxxxxxxx
Sender: owner-microblaze-uclinux@xxxxxxxxxxxxxx
Hi,
hmm...doesn't work here. I tried that patch and after that uClinux crashes or maybe just hangs while booting.
Below is the boot messages output, more below the old well working boot messages output:
CU, F@lk

Kenneth Johansson wrote:
> It was possible to get a process stuck in an infinite loop on the rfid
> instruction. 
> 
> The problem was that it was possible to get an interrupt 
> during context
> restore and when that happened after R14 was restored it 
> resulted in an
> infinite loop that gradually shrink down to include just the rfid
> instruction. 

Linux version 2.6.20-uc0 (devel@linux) (gcc version 3.4.1 ( PetaLinux 0.20 Build -rc1 050607 )) #30 PREEMPT Tue Nov 13 19:02:39 CET 2007
setup_cpuinfo: initialising
setup_cpuinfo: No PVR support in CPU.  Using static compile-time info
set_cpuinfo_static: Using static CPU info.
setup_memory: max_mapnr: 0x81fff
setup_memory: min_low_pfn: 0x80000
setup_memory: max_low_pfn: 0x2000
On node 0 totalpages: 8192
  DMA zone: 64 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 8128 pages, LIFO batch:0
  Normal zone: 0 pages used for memmap
Built 1 zonelists.  Total pages: 8128
Kernel command line: mtdparts=physmap-flash.0:6m(reserved)ro,10m(user) macaddr=00:0A:35:00:22:02
OPB INTC #0 at 0xFFFF3000
PID hash table entries: 128 (order: 7, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 30456k/32768k available
Calibrating delay loop... 46.89 BogoMIPS (lpj=234496)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
JFFS2 version 2.2. (C) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
uartlite.0: ttyS0 at MMIO 0xffff2000 (irq = 1) is a uartlite
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
vsint: loading interrupt handler driver...
eth0: using fifo mode.
eth0: No PHY detected.  Assuming a PHY at address 0.
eth0: Xilinx EMAC #0 at 0x40C00000 mapped to 0x40C00000, irq=5
eth0: id 2.0l; block id 11, type 1
BO EMAC: Returning Device List
physmap platform flash device: 01000000 at fe000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
 Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
2 cmdlinepart partitions found on MTD device physmap-flash.0
Creating 2 MTD partitions on "physmap-flash.0":
0x00000000-0x00600000 : "reserved"
0x00600000-0x01000000 : "user"
uclinux[mtd]: RAM probe address=0x801b0908 size=0x49000
Creating 1 MTD partitions on "RAM":
0x00000000-0x00049000 : "ROMfs"
uclinux[mtd]: set ROMfs to be root filesystem index=2
TCP bic registered
TCP cubic registered
TCP westwood registered
TCP htcp registered
NET: Registered protocol family 1
VFS: Mounted root (cramfs filesystem) readonly.
Freeing unused kernel memory: 80k freed
init started:  BusyBox v1.00 (2007.11.13-17:39+0000) multi-call binary
init started:  BusyBox v1.00 (2007.11.13-17:39+0000) multi-call binary
Starting pid 13, console F8: '8à'
Could not run '8à': No such file or directory
Could not run '8à': No such file or directory
Starting pid 15, console F8: 'p°'
Could not run 'p°': No such file or directory
Could not run 'p°': No such file or directory
Starting pid 16, console F8: '8à'
Could not run '8à': No such file or directory
Could not run '8à': No such file or directory
Starting pid 17, console F8: '8à'
Could not run '8à': No such file or directory
Could not run '8à': No such file or directory


====================================
Linux version 2.6.20-uc0 (devel@linux) (gcc version 3.4.1 ( PetaLinux 0.20 Build -rc1 050607 )) #29 PREEMPT Tue Nov 13 18:36:08 CET 2007
setup_cpuinfo: initialising
setup_cpuinfo: No PVR support in CPU.  Using static compile-time info
set_cpuinfo_static: Using static CPU info.
setup_memory: max_mapnr: 0x81fff
setup_memory: min_low_pfn: 0x80000
setup_memory: max_low_pfn: 0x2000
On node 0 totalpages: 8192
  DMA zone: 64 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 8128 pages, LIFO batch:0
  Normal zone: 0 pages used for memmap
Built 1 zonelists.  Total pages: 8128
Kernel command line: mtdparts=physmap-flash.0:6m(reserved)ro,10m(user) macaddr=00:0A:35:00:22:02
OPB INTC #0 at 0xFFFF3000
PID hash table entries: 128 (order: 7, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 30456k/32768k available
Calibrating delay loop... 46.89 BogoMIPS (lpj=234496)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
JFFS2 version 2.2. (C) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
uartlite.0: ttyS0 at MMIO 0xffff2000 (irq = 1) is a uartlite
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
vsint: loading interrupt handler driver...
eth0: using fifo mode.
eth0: No PHY detected.  Assuming a PHY at address 0.
eth0: Xilinx EMAC #0 at 0x40C00000 mapped to 0x40C00000, irq=5
eth0: id 2.0l; block id 11, type 1
BO EMAC: Returning Device List
physmap platform flash device: 01000000 at fe000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
 Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
2 cmdlinepart partitions found on MTD device physmap-flash.0
Creating 2 MTD partitions on "physmap-flash.0":
0x00000000-0x00600000 : "reserved"
0x00600000-0x01000000 : "user"
uclinux[mtd]: RAM probe address=0x801b0908 size=0x49000
Creating 1 MTD partitions on "RAM":
0x00000000-0x00049000 : "ROMfs"
uclinux[mtd]: set ROMfs to be root filesystem index=2
TCP bic registered
TCP cubic registered
TCP westwood registered
TCP htcp registered
NET: Registered protocol family 1
VFS: Mounted root (cramfs filesystem) readonly.
Freeing unused kernel memory: 80k freed
init started:  BusyBox v1.00 (2007.11.13-17:39+0000) multi-call binary
init started:  BusyBox v1.00 (2007.11.13-17:39+0000) multi-call binary
Starting pid 14, console : '/etc/rc.sysinit'
Mounting proc:
Mounting var:
Populating /var:
Running local start scripts.
Mounting sysfs:
Setting hostname:
Setting up interface lo:
Setting up interface eth0:
Starting portmap:

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