* Shreyas Mahajan <[email protected]> [090207 02:31]: > Hello, > Currently I am working on OMAP LDP board. I currently have 128 > MB of Memory, of which I am booting with 64MB with 'mem=64M' option. I > tried to use ioremap function to remap some memory above 64MB. > Function call to IOREMAP from 'omap_ldp_init' in 'board-ldp.c' works > fine returning a virtual address (0xc4808000 every time). But when I > tried to read from that memory, it gives > 'Unhandled fault: external abort on non-linefetch (0x1008) at > 0xc4808000'. Entire Log is: > > 'Unhandled fault: external abort on non-linefetch (0x1008) at 0xc4808000 > Internal error: : 1008 [#1] > Modules linked in: > CPU: 0 Not tainted (2.6.29-rc3-omap1-05417-gc00b556-dirty #80) > PC is at omap_ldp_init+0x134/0x1a4 > LR is at release_console_sem+0x190/0x1a4 > pc : [<c0011afc>] lr : [<c004921c>] psr: 60000013 > sp : c3817f30 ip : c3817e60 fp : c3817f44 > r10: 00000000 r9 : 00000000 r8 : 00000000 > r7 : 00000000 r6 : c021c820 r5 : c021d4f0 r4 : 00000000 > r3 : c4808000 r2 : c0207434 r1 : 0000070f r0 : c01d3d20 > Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel > Control: 10c5387f Table: 80004019 DAC: 00000017 > Process swapper (pid: 1, stack limit = 0xc38162e0) > Stack: (0xc3817f30 to 0xc3818000) > 7f20: c001c57c c001c530 c3817f54 c3817f48 > 7f40: c000e650 c00119d4 c3817fdc c3817f58 c0023298 c000e63c c383d0a0 c020e530 > 7f60: c000e630 00000000 c3817f94 c3817f78 c00d3600 c00d33b0 c3817f94 c383e800 > 7f80: c00d3740 c3817f9e c3817fc4 c3817f98 c006e7ac c00d35d0 c3817fb4 3533f9f0 > 7fa0: 00000031 00000000 00000170 c001c530 00000000 c001c57c c001c530 00000000 > 7fc0: 00000000 00000000 00000000 00000000 c3817ff4 c3817fe0 c00088b8 c0023244 > 7fe0: 00000000 00000000 00000000 c3817ff8 c004b598 c0008854 00ffff00 00ffff00 > Backtrace: > [<c00119c8>] (omap_ldp_init+0x0/0x1a4) from [<c000e650>] > (customize_machine+0x20/0x2c) > r5:c001c530 r4:c001c57c > [<c000e630>] (customize_machine+0x0/0x2c) from [<c0023298>] > (__exception_text_end+0x60/0x198) > [<c0023238>] (__exception_text_end+0x0/0x198) from [<c00088b8>] > (kernel_init+0x70/0xdc) > [<c0008848>] (kernel_init+0x0/0xdc) from [<c004b598>] (do_exit+0x0/0x65c) > r5:00000000 r4:00000000 > Code: e3a04000 e59f503c e59f0064 e5953008 (e7d31004) > <4>---[ end trace 1b75b31a2719ed1c ]--- > <0>Kernel panic - not syncing: Attempted to kill init!' > > > I tried to find cause of fault but failed. Could anyone please help me with > it?
This looks like you don't have the interface clock enabled for the device you're trying to access. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
