Date: Sat, 27 Jul 2013 22:51:31 -0700 From: Rui Paulo <rpaulo@felyko.com> To: "freebsd-arm@freebsd.org" <arm@freebsd.org> Subject: Re: External Non-Linefetch Abort (S) Message-ID: <FF70D0AA-FAFD-4EA5-9D3C-331D4C5EF1A1@felyko.com> In-Reply-To: <3C6B0B0D-3F16-44A5-8DF2-A79CBD0D02D3@felyko.com> References: <3C6B0B0D-3F16-44A5-8DF2-A79CBD0D02D3@felyko.com>
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On 27 Jul 2013, at 20:33, Rui Paulo <rpaulo@felyko.com> wrote: > 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: >=20 > 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 >=20 > [ thread pid 0 tid 100000 ] > Stopped at generic_bs_r_4: ldr r0, [r1, r2] >=20 > It looks like 0xd4a5c000 is the virtual address that points to = 0x4a300000 (I checked with vtophys()). >=20 > Does anyone know what this problem could be? I made sure the clock for = this device are running. Nevermind, I missed one PRCM bit... -- Rui Paulo
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