Hello Raja, Thanks for the reply.
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. > > > 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 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