Date: Wed, 6 Jan 2010 22:18:29 GMT From: Rafal Jaworowski <raj@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 172680 for review Message-ID: <201001062218.o06MITca044604@repoman.freebsd.org>
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http://p4web.freebsd.org/chv.cgi?CH=172680 Change 172680 by raj@raj_fdt on 2010/01/06 22:17:59 mpc85xx: Clean up LAW regs early, so we can start with a known state. Affected files ... .. //depot/projects/fdt/sys/powerpc/booke/platform_bare.c#3 edit Differences ... ==== //depot/projects/fdt/sys/powerpc/booke/platform_bare.c#3 (text+ko) ==== @@ -90,7 +90,8 @@ static int bare_probe(platform_t plat) { - uint32_t ver; + uint32_t ver, sr; + int i, law_max, tgt; ver = SVR_VER(mfspr(SPR_SVR)); if (ver == SVR_MPC8572E || ver == SVR_MPC8572) @@ -98,6 +99,23 @@ else maxcpu = 1; + /* + * Clear local access windows. Skip DRAM entries, so we don't shoot + * ourselves in the foot. + */ + law_max = law_getmax(); + for (i = 0; i < law_max; i++) { + sr = ccsr_read4(OCP85XX_LAWSR(i)); + if ((sr & 0x80000000) == 0) + continue; + tgt = (sr & 0x01f00000) >> 20; + if (tgt == OCP85XX_TGTIF_RAM1 || tgt == OCP85XX_TGTIF_RAM2 || + tgt == OCP85XX_TGTIF_RAM_INTL) + continue; + + ccsr_write4(OCP85XX_LAWSR(i), sr & 0x7fffffff); + } + return (BUS_PROBE_GENERIC); }
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