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Diffstat (limited to 'bsps/arm/include/bsp/arm-a9mpcore-start.h')
-rw-r--r--bsps/arm/include/bsp/arm-a9mpcore-start.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/bsps/arm/include/bsp/arm-a9mpcore-start.h b/bsps/arm/include/bsp/arm-a9mpcore-start.h
index 8f9da486b5..5f870acec7 100644
--- a/bsps/arm/include/bsp/arm-a9mpcore-start.h
+++ b/bsps/arm/include/bsp/arm-a9mpcore-start.h
@@ -125,6 +125,21 @@ arm_a9mpcore_start_enable_smp_in_auxiliary_control(void)
}
BSP_START_TEXT_SECTION static inline void
+arm_a9mpcore_start_errata_794072_handler(void)
+{
+ uint32_t diag;
+
+ /*
+ * Workaround for Errata 794072: A short loop including a DMB instruction
+ * might cause a denial of service on another which executes a CP15 broadcast
+ * operation.
+ */
+ diag = arm_cp15_get_diagnostic_control();
+ diag |= 1U << 4;
+ arm_cp15_set_diagnostic_control(diag);
+}
+
+BSP_START_TEXT_SECTION static inline void
arm_a9mpcore_start_errata_845369_handler(void)
{
uint32_t diag;
@@ -152,6 +167,7 @@ BSP_START_TEXT_SECTION static inline void arm_a9mpcore_start_hook_0(void)
}
#ifdef RTEMS_SMP
+ arm_a9mpcore_start_errata_794072_handler();
arm_a9mpcore_start_errata_845369_handler();
arm_a9mpcore_start_enable_smp_in_auxiliary_control();
#endif