Looks like enabling CONFIG_ARM_ERRATA_751472 causes omap4 blaze to not boot when enabled. The ARM core on it is an earlier r1p2: CPU: ARMv7 Processor [411fc092] revision 2 (ARMv7), cr=10c53c7d Unfortunately I don't have the details of errata 751472, but I'm guessing we need to disable it for r1p*. Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> --- Can somebody with access to the errata check if it has more info on which revisions this should be set on? Maybe it's just r2p* - r3p0? --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -236,6 +236,8 @@ __v7_setup: mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif #if defined(CONFIG_ARM_ERRATA_751472) && defined(CONFIG_SMP) + teq r5, #0x00100000 @ fails at least on r1p2 + beq 1f ALT_SMP(cmp r6, #0x30) @ present prior to r3p0 ALT_UP_B(1f) mrclt p15, 0, r10, c15, c0, 1 @ read diagnostic register -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
