local_flush_bp_all();
}
+#ifdef CONFIG_ARM_ERRATA_798181
+bool (*erratum_a15_798181_handler)(void);
+
+static bool erratum_a15_798181_partial(void)
+{
+ asm("mcr p15, 0, %0, c8, c3, 1" : : "r" (0));
+ dsb(ish);
+ return false;
+}
+
+static bool erratum_a15_798181_broadcast(void)
+{
+ asm("mcr p15, 0, %0, c8, c3, 1" : : "r" (0));
+ dsb(ish);
+ return true;
+}
+
+void erratum_a15_798181_init(void)
+{
+ unsigned int midr = read_cpuid_id();
+ unsigned int revidr = read_cpuid(CPUID_REVIDR);
+
+ /* Cortex-A15 r0p0..r3p2 w/o ECO fix affected */
+ if ((midr & 0xff0ffff0) != 0x410fc0f0 || midr > 0x413fc0f2 ||
+ (revidr & 0x210) == 0x210) {
+ return;
+ }
+ if (revidr & 0x10)
+ erratum_a15_798181_handler = erratum_a15_798181_partial;
+ else
+ erratum_a15_798181_handler = erratum_a15_798181_broadcast;
+}
+#endif
+
static void ipi_flush_tlb_a15_erratum(void *arg)
{
dmb();
if (!erratum_a15_798181())
return;
- dummy_flush_tlb_a15_erratum();
smp_call_function(ipi_flush_tlb_a15_erratum, NULL, 1);
}
if (!erratum_a15_798181())
return;
- dummy_flush_tlb_a15_erratum();
this_cpu = get_cpu();
a15_erratum_get_cpumask(this_cpu, mm, &mask);
smp_call_function_many(&mask, ipi_flush_tlb_a15_erratum, NULL, 1);