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/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index c441bd2..1e5a43f 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -7,6 +7,7 @@
#include <common.h>
#include <command.h>
#include <linux/compiler.h>
+#include <asm/fsl_errata.h>
#include <asm/processor.h>
#include "fsl_corenet_serdes.h"
@@ -245,6 +246,10 @@
#ifdef CONFIG_SYS_FSL_ERRATUM_A006593
puts("Work-around for Erratum A006593 enabled\n");
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A006379
+ if (has_erratum_a006379())
+ puts("Work-around for Erratum A006379 enabled\n");
+#endif
#ifdef CONFIG_SYS_FSL_ERRATUM_SEC_A003571
if (IS_SVR_REV(svr, 1, 0))
puts("Work-around for Erratum A003571 enabled\n");
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index a8107a9..b31efb7 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -19,6 +19,7 @@
#include <asm/io.h>
#include <asm/cache.h>
#include <asm/mmu.h>
+#include <asm/fsl_errata.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
#include <asm/fsl_srio.h>
@@ -160,6 +161,12 @@
#ifdef CONFIG_SYS_FSL_ERRATUM_A006593
setbits_be32(&cpc->cpchdbcr0, 1 << (31 - 21));
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A006379
+ if (has_erratum_a006379()) {
+ setbits_be32(&cpc->cpchdbcr0,
+ CPC_HDBCR0_SPLRU_LEVEL_EN);
+ }
+#endif
out_be32(&cpc->cpccsr0, CPC_CSR0_CE | CPC_CSR0_PE);
/* Read back to sync write */