Date: Sat, 27 Jul 2013 20:33:18 -0700 From: Rui Paulo <rpaulo@felyko.com> To: "freebsd-arm@freebsd.org" <arm@freebsd.org> Subject: External Non-Linefetch Abort (S) Message-ID: <3C6B0B0D-3F16-44A5-8DF2-A79CBD0D02D3@felyko.com>
next in thread | raw e-mail | index | archive | help
On the BeagleBone, I'm trying to access this address 0x4a300000. I know = there is a device there (the PRUSS) and I should be able to access it, = but instead I get this data abort trap: Fatal kernel mode data abort: 'External Non-Linefetch Abort (S)' trapframe: 0xc08c5c84 FSR=3D00001008, FAR=3Dd4a5c000, spsr=3D60000093 r0 =3D00000000, r1 =3Dd4a5c000, r2 =3D00000000, r3 =3Dc062a908 r4 =3D00000000, r5 =3Dc08c5ce4, r6 =3Dc1825500, r7 =3Dc18eb700 r8 =3Dffffffff, r9 =3Dc1825d80, r10=3Dc1825500, r11=3Dc05511e0 r12=3D00000015, ssp=3Dc08c5cd0, slr=3Dc052f1b0, pc =3Dc050bf78 [ thread pid 0 tid 100000 ] Stopped at generic_bs_r_4: ldr r0, [r1, r2] It looks like 0xd4a5c000 is the virtual address that points to = 0x4a300000 (I checked with vtophys()). Does anyone know what this problem could be? I made sure the clock for = this device are running. -- Rui Paulo
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3C6B0B0D-3F16-44A5-8DF2-A79CBD0D02D3>