powerpc/mpc85xx: Add workaround for erratum A006379
Erratum A006379 says CPCHDBCR0 bit field [10:14] has incorrect default
value after POR. The workaround is to set this field before enabling
CPC to 0x1e.
Erratum A006379 applies to
T4240 rev 1.0
B4860 rev 1.0, 2.0
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/include/asm/fsl_errata.h b/arch/powerpc/include/asm/fsl_errata.h
new file mode 100644
index 0000000..3cac2d4
--- /dev/null
+++ b/arch/powerpc/include/asm/fsl_errata.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ASM_FSL_ERRATA_H
+#define _ASM_FSL_ERRATA_H
+
+#include <common.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A006379
+static inline bool has_erratum_a006379(void)
+{
+ u32 svr = get_svr();
+ if (((SVR_SOC_VER(svr) == SVR_T4240) && SVR_MAJ(svr) <= 1) ||
+ ((SVR_SOC_VER(svr) == SVR_B4860) && SVR_MAJ(svr) <= 2))
+ return true;
+
+ return false;
+}
+#endif
+
+#endif