> > You told the kernel mem=1024M. That's memory at physical address zero > so overlaps with I/O address ranges. Boom. The reason that you for > further with highmem is the same except except that probably by pure luck > the allocation order got things to fail a little later. > > To debug this sort of case I suggest you get early printk to work for your > board or maybe you have a working EJTAG probe and debugger. > [Anoop P.A.] PMON is reporting 1024 MB memory and maps it from 0x00 to 0x40000000 . In platfor_mem_init I am adding determined memory as add_memory_region(0, sequoia_memsize*1024*1024 , BOOT_MEM_RAM) sequoia_memsize is environment variable from pmon ( in MB) I have tweaked printk and I am getting following Bus error if I boot with a 1 GB RAM 5>Linux version 2.6.18 (paanoop1@xxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.5) #61 Tue Jan 19 19:45:51 IST 2010 <4>MIPS 64-bit support for PMC-Sierra Sequoia <4>memory size 1024MB <4>cpu_clock set to 600000000 <4>CPU revision is: 000034c1 <4>FPU revision is: 00003420 <4>PMC-Sierra PM74100 Board Setup <4>64-bit support 90000000FF080508 <4>Determined physical RAM map: <4> memory: 0000000040000000 @ 0000000000000000 (usable) <7>On node 0 totalpages: 262144 <7> DMA zone: 262144 pages, LIFO batch:31 <4>Built 1 zonelists. Total pages: 262144 <5>Kernel command line: <4>Primary instruction cache 16kB, physically tagged, 4-way, linesize 32 bytes. <4>Primary data cache 16kB, 4-way, linesize 32 bytes. <6>Secondary cache size 256K, linesize 32 bytes. <6>Synthesized TLB refill handler (39 instructions). <6>Synthesized TLB load handler fastpath (51 instructions). <6>Synthesized TLB store handler fastpath (51 instructions). <6>Synthesized TLB modify handler fastpath (50 instructions). <4>PID hash table entries: 4096 (order: 12, 32768 bytes) <4>Using 300.000 MHz high precision timer. <4>Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) <4>Inode-cache hash table entries: 65536 (order: 7, 524288 bytes) <6>Memory: 1025280k/1048576k available (3860k kernel code, 22976k reserved, 1724k data, 224k init, 0k highmem) <6>##################################################################### ###################### <4> <6>TITAN_GE_BASE=FF080000 TITAN_GE_SIZE=10000 <4>RM9150_LOCALBUS_DCR=FF070000 RM9150_LOCALBUS_SIZE=10000 <4> <6> <4>BOOT_FLASH_BASE=FC000000 BOOT_FLASH_SIZE=800000 <4>RTC_BASE=FC200000, <4>FPGA_BASE=FC210000 FPGA_SIZE=10000 <6>titan_ge_base=90000000FF080000 <4>rm9150_pci0_base=90000000FF000000 <4>rm9150_pci1_base=90000000FF010000 <4>rm9150_dma_base=90000000FF040000 <4>rm9150_localbus_base=90000000FF070000 <4>sequoia_fpga_base=90000000FC210000 <6>##################################################################### ###################### <4> <6>Internal UART Support for PMC-Sierra Sequoia <4>You are using the Dallas DS1501 RTC. <4>UDI: initializing <7>Calibrating delay loop... 598.01 BogoMIPS (lpj=1196032) <4>Mount-cache hash table entries: 256 <4>Checking for 'wait' instruction... available. <4>Checking for the multiply/shift bug... no. <4>Checking for the daddi bug... no. <4>Checking for the daddiu bug... no. <7>Registering sysdev class '<NULL>' <6>NET: Registered protocol family 16 <5>SCSI subsystem initialized <6>usbcore: registered new driver usbfs <6>usbcore: registered new driver hub <3>PCI: Failed to allocate mem resource #2:20000000@e0000000 for 0000:00:01.0 <3>PCI: Failed to allocate mem resource #2:20000000@100000000 for 0000:01:01.0 <6>NET: Registered protocol family 2 <4>IP route cache hash table entries: 32768 (order: 6, 262144 bytes) <1>Data bus error, epc == ffffffff80354940, ra == ffffffff8069dd50 <4>Oops[#1]: <4>Cpu 0 <4>$ 0 : 0000000000000000 ffffffff806d0000 980000003fc00000 0000000000000000 <4>$ 4 : 980000003fc00040 0000000000000000 0000000000040000 000000000000000a <4>$ 8 : fffffffffffffff6 0000000000000005 ffffffffffffffff ffffffff806b1d4a <4>$12 : 0000000000000000 980000003fc40000 ffffffff806b2110 0000000000000000 <4>$16 : ffffffff80604060 ffffffff80604060 0000000000000000 0000000000000000 <4>$20 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 <4>$24 : 0000000000000000 ffffffff804d9d30 <4>$28 : 9800000001fc4000 9800000001fc7f30 0000000000000000 ffffffff8069dd50 <4>Hi : 0000000000000002 <4>Lo : 0000000000000000 <4>epc : ffffffff80354940 __bzero+0x3c/0x60 Not tainted <4>ra : ffffffff8069dd50 ip_rt_init+0x1d4/0x538 <4>Status: 940080e3 KX SX UX KERNEL EXL IE <4>Cause : 0000001c <4>PrId : 000034c1 <4>Modules linked in: <4>Process swapper (pid: 1, threadinfo=9800000001fc4000, task=9800000001fc1848) <4>Stack : ffffffff8069e2b0 ffffffff80604060 ffffffff8069ef90 ffffffff8069ef88 <4> ffffffff806a9200 0000000000000000 ffffffff801005fc ffffffff801005fc <4> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 <4> 9800000001fc4000 9800000001fc7fe0 0000000000000001 0000000000000000 <4> 0000000000000000 0000000000000000 0000000000000000 ffffffff80104c40 <4> 0000000000000000 ffffffff80104c30 ffffffffffffffff ffffffffffffffff <4> ffffffffffffffff ffffffffffffffff <4>Call Trace: <4>[<ffffffff80354940>] __bzero+0x3c/0x60 <4>[<ffffffff8069dd50>] ip_rt_init+0x1d4/0x538 <4>[<ffffffff8069e2b0>] ip_init+0x10/0x1c <4>[<ffffffff8069ef90>] inet_init+0x218/0x7e8 <4>[<ffffffff801005fc>] init+0x128/0x4ec <4>[<ffffffff80104c40>] kernel_thread_helper+0x10/0x18 <4> <4> <4>Code: 01a4682d 64840040 fc85ffc0 <fc85ffc8> fc85ffd0 fc85ffd8 fc85ffe0 fc85ffe8 fc85fff0 <0>Kernel panic - not syncing: Attempted to kill init! I can boot kernel with 1 GB module if I limit memory as follows add_memory_region(0, 0x20000000 , BOOT_MEM_RAM) How will I map entire 1GB of RAM. Is there any mips platform make use of ( >512MB) memory. It will be great if some body can pont me to a working source. > Btw, what is the point of putting ASCII boot logs into word files > inflating > them 10x and getting half the mail filters of this world to throw the > attachments or entire email away? [Anoop P.A.] I haven't cared much about size. I am very sorry about that. > > Ralf
