Hi > > Raja Chidambaram wrote: >> Hello Sudheer, >> >> Sorry for the Late reply.since we faced some >> complexity in this kind of system Ace setup we have >> dropped it & moved to different setup. >> >> As of now in your case trace the xilinx code which is >> bascially on adapter.c as for as the xilinix code is >> concerned the hardware initialization code are done >> by xilinux, And only the kernel integration code >> developed by open source developers.So u might to >> track >> this cahnges >> >> As u said your xilinx is connected to EBC make sure >> the power on cycles is perfomed with no errrors. >> >> As for as your base register for xilinux is concerned >> the u-boot handle same as linux but the AMCC 440SPe >> processor have differnet TLB type so please make >> sure u understand TLB for 440SPe. >> >> >> I got solved the issue by changing the ioremap function usage. The PPC440 implements a 36 bit memory map. So i changed my ioremap to ioremap64 and gave the 36-bit physical address which includes EPN and is 0x5d0000000ULL and it returns a 32-bit virtual pointer with which am able to access the device registers.
Thanks Raja and all for your kindly help. Thanks Sudheer >> > Can you please send some links if available that tells about the TLBs > in 440SPe. I have googled but could not get much information. > > Thanks > Sudheer >> >> >> >> >> >> --- sudheer <urwithsudheer at gmail.com> wrote: >> >> >>> Hello All >>> >>> I'm really desperate for some help , I've been >>> struggling with this >>> system since few days. >>> >>> sudheer wrote: >>> >>>> Hello Raja, >>>> >>>> We too are working on customized board with amcc >>>> >>> 440SPe processor , >>> >>>> xilinx System Ace controller. Compact flash is >>>> >>> connected to system >>> >>>> ace controller. >>>> We use u-boot 1.1.2 as bootloader & linux kernel - >>>> >>> 2.6.16-2. >>> >>>> System ace is connected to amcc440SPE processor >>>> >>> via GPIO and External >>> >>>> Peripheral Bus Controller(EBC). >>>> >>> I am still facing the issue in accessing the address >>> in linux. >>> >>> The physical address given in u-boot init.S >>> tlbentry for 'system ace' >>> is 0xE0000000 >>> I am able to access the address in u-boot and >>> everything is fine in u-boot. >>> But in linux , I am able to ioremap the the address >>> 0xE0000000 but the >>> kernel crashes when i try to access the address . >>> physical address=0xe0000000 >>> address_after_ioremap = 0xe1000000. >>> I am trying to read with >>> readw(address_after_ioremap) >>> The kernel gives an exception error saying Oops: >>> machine check, sig: 7 >>> [#2] . >>> The error dump is as below: >>> >>> Instruction dump: >>> Data machine check in kernel mode. >>> PLB0: BEAR=0x00000000e0000000 ACR= 0xdb000000 BESR= >>> 0x0000000000008000 >>> PLB1: BEAR=0xe98d7ad33716ee7e ACR= 0xdb000000 BESR= >>> 0x0000000000000000 >>> POB0: BEAR=0x0000000fffaebbcd BESR0=0x00000000 >>> BESR1=0x00000000 >>> OPB0: BEAR=0x0000000000000000 BSTAT=0x00000000 >>> Oops: machine check, sig: 7 [#2] >>> NIP: 00000000 LR: C0002200 CTR: 00000000 >>> REGS: c0241f50 TRAP: 0202 Not tainted (2.6.16.2) >>> MSR: 00000000 <> CR: 84CA4124 XER: 00000000 >>> TASK = dff6cb70[1] 'swapper' THREAD: c0740000 >>> GPR00: 00000000 C0241E40 DFF6CB70 00000001 FFFFFFD0 >>> 00000000 C0240000 >>> C01F3C0C >>> GPR08: C01F0000 C0002200 00021002 C0001FF4 DFF6CD38 >>> 802823E0 1FFB9600 >>> 00000000 >>> GPR16: 00000001 FFFFFFFF 00000000 007FFF00 1FFB3540 >>> 1FF63CE0 1FFCEE78 >>> C01C0000 >>> GPR24: C01C0000 C01C0000 C01F0000 C01C0000 BFFFFFFF >>> FFFFFFD0 00000000 >>> C0241F50 >>> NIP [00000000] 0x0 >>> LR [C0002200] ret_from_except+0x0/0x18 >>> Call Trace: >>> Instruction dump: >>> Data machine check in kernel mode. >>> PLB0: BEAR=0x00000000e0000000 ACR= 0xdb000000 BESR= >>> 0x0000000000008000 >>> .........and this dump gets print continously. >>> >>> >>> I have checked with TLB entries in u-boot and linux >>> using BDI: >>> >>> BDI_AMCC440SPe>tlb 0 10 >>> IDX TID EPN SIZE VTS RPN USER WIMGE >>> USRSVC >>> 0 : 00 ff000000 16MB V0 -> 4_ff000000 U:0000 WI-G- >>> XWRXWR >>> 1 : 00 00000000 256MB V0 -> 0_00000000 U:0000 -I-G- >>> XWRXWR >>> 2 : 00 10000000 256MB V0 -> 0_10000000 U:0000 -I-G- >>> XWRXWR >>> 3 : 00 20000000 256MB V0 -> 0_20000000 U:0000 -I-G- >>> XWRXWR >>> 4 : 00 30000000 256MB V0 -> 0_30000000 U:0000 -I-G- >>> XWRXWR >>> 5 : 00 90000000 256KB V0 -> 4_00000000 U:0000 -I--- >>> XWRXWR >>> 6 : 00 e0000000 1KB V0 -> 4_e0000000 U:0000 -I-G- >>> -WR-WR >>> 7 : 00 a0000000 4KB V0 -> 4_f0000000 U:0000 -I-G- >>> -WR-WR >>> 8 : 00 d0000000 256MB V0 -> c_00000000 U:0000 -I-G- >>> -WR-WR >>> 9 : 00 80000000 256MB V0 -> c_10000000 U:0000 -I-G- >>> -WR-WR >>> 10 : 00 01080000 1KB -0 -> 0_00000000 U:0000 ----- >>> ------ >>> BDI_AMCC440SPe> >>> >>> In Linux the tlb entries are as below....... >>> >>> BDI_AMCC440SPe>tlb 0 63 >>> IDX TID EPN SIZE VTS RPN USER WIMGE >>> USRSVC >>> 0 : 0e 0ff1a000 4KB V0 -> 0_007ce000 U:0000 --MG- >>> --R--R >>> 1 : 0e 0fe94000 4KB V0 -> 0_1ff96000 U:0000 ---G- >>> X-RX-R >>> 2 : 0e 30017000 4KB V0 -> 0_007cd000 U:0000 --MG- >>> --R-WR >>> 3 : 0e 10039000 4KB V0 -> 0_1ffb8000 U:0000 ---G- >>> X-RX-R >>> 4 : 0e 30009000 4KB V0 -> 0_00758000 U:0000 ---G- >>> X-RX-R >>> 5 : 0e 30010000 4KB V0 -> 0_0078b000 U:0000 ---G- >>> X-RX-R >>> 6 : 0e 00000000 1KB -0 -> 0_1f4e2000 U:0000 ---G- >>> --R--R >>> 7 : 0e 0fe3e000 4KB V0 -> 0_1f4e2000 U:0000 ---G- >>> X-RX-R >>> 8 : 0e 0ff1c000 4KB V0 -> 0_007ed000 U:0000 --MG- >>> XWRXWR >>> 9 : 0e 0ff1e000 4KB V0 -> 0_007ee000 U:0000 --MG- >>> -WR-WR >>> 10 : 0e 0ff1f000 4KB V0 -> 0_007ea000 U:0000 --MG- >>> XWRXWR >>> 11 : 0e 0fe39000 4KB V0 -> 0_1ff8e000 U:0000 ---G- >>> X-RX-R >>> 12 : 0e 0ff21000 4KB V0 -> 0_007a8000 U:0000 --MG- >>> --R-WR >>> 13 : 0e 0fe47000 4KB V0 -> 0_1ffa9000 U:0000 ---G- >>> X-RX-R >>> 14 : 0e 0fe46000 4KB V0 -> 0_1ffb2000 U:0000 ---G- >>> X-RX-R >>> 15 : 0e 30019000 4KB V0 -> 0_007c5000 U:0000 --MG- >>> -WR-WR >>> 16 : 0e 0fe45000 4KB V0 -> 0_1ffa8000 U:0000 ---G- >>> X-RX-R >>> 17 : 00 fdfff000 4KB V0 -> 4_f0000000 U:0000 -IMG- >>> ----WR >>> 18 : 0e 0fe9a000 4KB V0 -> 0_1ff98000 U:0000 ---G- >>> X-RX-R >>> 19 : 0e 10067000 4KB V0 -> 0_0078e000 U:0000 --MG- >>> -WR-WR >>> 20 : 0e 00000000 4KB -0 -> 0_1f4e5000 U:0000 ---G- >>> --R--R >>> 21 : 0e 10030000 4KB V0 -> 0_1f4e5000 U:0000 ---G- >>> X-RX-R >>> 22 : 0e 10063000 4KB V0 -> 0_007b7000 U:0000 --MG- >>> -WR-WR >>> 23 : 0e 0fe4c000 4KB V0 -> 0_1ff9b000 U:0000 ---G- >>> X-RX-R >>> 24 : 0e 1007f000 4KB V0 -> 0_007e0000 U:0000 --MG- >>> -WR-WR >>> 25 : 0e 0ff1d000 4KB V0 -> 0_007c6000 U:0000 --MG- >>> --R-WR >>> 26 : 0e 0fe4e000 4KB V0 -> 0_1ffa1000 U:0000 ---G- >>> X-RX-R >>> 27 : 0e 0fe0f000 4KB V0 -> 0_0077e000 U:0000 ---G- >>> X-RX-R >>> 28 : 0e 0fe52000 4KB V0 -> 0_0077f000 U:0000 ---G- >>> X-RX-R >>> 29 : 0e 0fe53000 4KB V0 -> 0_1ff80000 U:0000 ---G- >>> X-RX-R >>> 30 : 0e 0fef9000 4KB V0 -> 0_1ff81000 U:0000 ---G- >>> --R--R >>> 31 : 0e 0fe3b000 4KB V0 -> 0_1ffa7000 U:0000 ---G- >>> X-RX-R >>> 32 : 0e 7f901000 4KB V0 -> 0_007db000 U:0000 --MG- >>> -WR-WR >>> 33 : 0e 10027000 4KB V0 -> 0_1ffd0000 U:0000 ---G- >>> X-RX-R >>> 34 : 0e 1003a000 4KB V0 -> 0_1ffb6000 U:0000 ---G- >>> X-RX-R >>> 35 : 0e 0fe51000 4KB V0 -> 0_00775000 U:0000 ---G- >>> X-RX-R >>> 36 : 0e 1003b000 4KB V0 -> 0_1ffb7000 U:0000 ---G- >>> X-RX-R >>> 37 : 0e 1002a000 4KB V0 -> 0_1ffcf000 U:0000 ---G- >>> X-RX-R >>> 38 : 0e 10066000 4KB V0 -> 0_007de000 U:0000 --MG- >>> -WR-WR >>> 39 : 0e 1002b000 4KB V0 -> 0_1ffd3000 U:0000 ---G- >>> X-RX-R >>> 40 : 0e 1002c000 4KB V0 -> 0_1ffd2000 U:0000 ---G- >>> X-RX-R >>> 41 : 0e 1005d000 4KB V0 -> 0_007f4000 U:0000 --MG- >>> XWRXWR >>> 42 : 0e 1002d000 4KB V0 -> 0_1ffc2000 U:0000 ---G- >>> X-RX-R >>> 43 : 0e 10028000 4KB V0 -> 0_1ffc8000 U:0000 ---G- >>> X-RX-R >>> 44 : 0e 10069000 4KB V0 -> 0_0078d000 U:0000 --MG- >>> -WR-WR >>> >>> >> === message truncated === >> >> >> __________________________________________________ >> Do You Yahoo!? >> Tired of spam? 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