Hi Prabhat, Be careful the register endian, these registers are little endian. I suggest you do clearing the bit before pci_hose_scan.
I suspect the traps code have one bug inside of u-boot-1.0.0. -Dave > -----Original Message----- > From: Prabhat_Singh [mailto:Prabhat_Singh at Satyam.com] > Sent: Tuesday, June 20, 2006 5:58 PM > To: Liu Dave-r63238; linuxppc-embedded at ozlabs.org > Subject: RE: Exceptions during PCI initialization at u-boot > > > Hi Dave > Thanks for you comments. > > I tried clearing 'PCI No response' as follows : > Unsigned int* EMR=( Unsigned > int*)0xf0010888; > Unsigned int* ESR=( Unsigned > int*)0xf0010884; > Before pci_hose_read_config_byte function I cleared the > the 'PCI No response' bit. > *EMR &=0xFFFFFFF7; > *ESR |=0x00000008; > Now it's getting reset and machine check exception coming all the time > continuously and board is not booting up. > > I am clueless please advice what to do? > > Regards > Prabhat > > > > > > > -----Original Message----- > From: Liu Dave-r63238 [mailto:DaveLiu at freescale.com] > Sent: Tuesday, June 20, 2006 1:29 PM > To: Prabhat_Singh; linuxppc-embedded at ozlabs.org > Subject: RE: Exceptions during PCI initialization at u-boot > > Hi Prabhat, > > Did you clear the 'PCI No response' in the error mask register > before you do PCI configuration read? If you didn't, machine check > will arise when PCI scan unpopulated PCI slot. > > I notice that the MSR[12] is set, but the trap codes haven't > detect that, what is your toolchain? > > Regards, > -Dave > > > -----Original Message----- > Hi all > I am getting two exceptions, that you will find in log, at the > pci_hose_read_config_byte memory is crashing that's I found in > System.map. after second exception its boots properly. I have no clue > whats happening. And why I am not able to read Configuration space of > pci. > From where this exception is coming? > Please help me out. What else I can check? > > > VPN Router Board > > > Vpn Router U-Boot 1.0.0 (Jun 19 2006 - 11:31:37) > > MPC8260 Reset Status: External Soft, External Hard > > MPC8260 Clock Configuration > - Bus-to-Core Mult 4x, VCO Div 2, 60x Bus Freq 25-75 , Core Freq > 100-300 > - dfbrg 0, corecnf 0x1a, busdf 3, cpmdf 1, plldf 0, pllmf 3 > - vco_out 400000000, scc_clk 100000000, brg_clk 100000000 > - cpu_clk 400000000, cpm_clk 200000000, bus_clk 100000000 > > CPU: 8272 (HiP7 Rev 14, Mask A.0 1K50M) at 400 MHz > Board: VPN8248 > DRAM: 32 MB > total length of code 216456l 34d88value of sdrambase+ramsize > 02000000 > Top of RAM usable for U-Boot at: 02000000 > Reserving 211k for U-Boot at: 01fcb000 > Reserving 128k for malloc() at: 01faae00 > Reserving 76 Bytes for Board Info at: 01faadb4 > Reserving 80 Bytes for Global Data at: 01faad64 > Stack Pointer at: 01faad48 > New Stack Pointer is: 01faad48 > value of ret 0 > Entering reloacte > Now running in RAM - U-Boot at: 01fcb000 > POST memory POST memory PASSED > PASSED > FLASH: satyam : manufacturor ID = 200020satyam: id1=22df22df > satyam: id2=0 > satyam: id3=80008 > 16 MB > PCI Autoconfig: Memory region: [14000000-1bffffff] > PCI Autoconfig: I/O region: [1c000000-1dffffff] > Bus Fault @ 0x01fd2df8, fixup 0x00000000 > Machine check in kernel mode. > Caused by (from msr): regs 01faab60 Unknown values in msr > NIP: 01FD2DF8 XER: 00000000 LR: 01FD2DF0 REGS: 01faab60 TRAP: > 0200 DAR: > 01FE4DB8 > MSR: 00083002 EE: 0 PR: 0 FP: 1 ME: 1 IR/DR: 00 > > GPR00: 01FD3A24 01FAAC50 FFFFFFFF 00000000 8000080C 00000002 01FAAC5E > 01C5D1FB > GPR08: 01FD0084 F0010904 00000000 00000000 00000020 FFFFFFFF 01FF8000 > 020CB000 > GPR16: FFFFFFFF FFFFFFFF FFFFFEFF FFFFFFFF 00000000 00000000 FFFFFFFF > F0010D20 > GPR24: 00000000 00000000 01FFE39C 00000100 01FFE39C 01FAAD64 01FF8400 > 00000800 > Call backtrace: > 01FD3A24 01FD3BF0 01FE8B84 01FE3E04 01FD3C64 01FCFE30 01FCE48C > machine check > VPN Router Board > > > Vpn Router U-Boot 1.0.0 (Jun 19 2006 - 11:31:37) > > MPC8260 Reset Status: > > MPC8260 Clock Configuration > - Bus-to-Core Mult 4x, VCO Div 2, 60x Bus Freq 25-75 , Core Freq > 100-300 > - dfbrg 0, corecnf 0x1a, busdf 3, cpmdf 1, plldf 0, pllmf 3 > - vco_out 400000000, scc_clk 100000000, brg_clk 100000000 > - cpu_clk 400000000, cpm_clk 200000000, bus_clk 100000000 > > CPU: 8272 (HiP7 Rev 14, Mask A.0 1K50M) at 400 MHz > Board: VPN8248 > DRAM: 32 MB > total length of code 216456l 34d88value of sdrambase+ramsize > 02000000 > Top of RAM usable for U-Boot at: 02000000 > Reserving 211k for U-Boot at: 01fcb000 > Reserving 128k for malloc() at: 01faae00 > Reserving 76 Bytes for Board Info at: 01faadb4 > Reserving 80 Bytes for Global Data at: 01faad64 > Stack Pointer at: 01faad48 > New Stack Pointer is: 01faad48 > Entering reloacte > Now running in RAM - U-Boot at: 01fcb000 > FLASH: satyam : manufacturor ID = 200020satyam: id1=22df22df > PCI Autoconfig: Memory region: [14000000-1bffffff] > PCI Autoconfig: I/O region: [1c000000-1dffffff] > vendor=168c > PCI Scan: Found Bus 0, Device 15, Function 0 > PCI Autoconfig: BAR 0, Mem, size=0x10000, address=0x14000000 > PCI Autoconfig: BAR 1, I/O, size=0xffffb000, No room in resource > PCI: 00 0f 168c 0013 0200 00 > value of item =1 > In: serial > Out: serial > Err: serial > Chip Name = 175a > Chip Name = 175c > phy ID(0x02430d80) = 02430d80 > Level One/ICPLUS PHY Identied IC175C Revision 0 > Phy operating at 100 MBit/s in full-duplex mode > Phy operating at 100 MBit/s in full-duplex mode > U-Boot relocated to 01fcb000 > Net: value of fec FCC2 ETHERNET > FCC2 ETHERNET > Hit any key to stop autoboot: 5 satyam=> > > > > > DISCLAIMER: > This email (including any attachments) is intended for the > sole use of the intended recipient/s and may contain material > that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any > review or reliance by others or copying or distribution or > forwarding of any or all of the contents in this message is > STRICTLY PROHIBITED. If you are not the intended recipient, > please contact the sender by email and delete all copies; > your cooperation in this regard is appreciated. >
