@@ -82,10 +82,13 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
/* Operational Mode Paramters */
/* Pick ECC modes */
-#ifdef CONFIG_DDR_ECC
- popts->ECC_mode = 1; /* 0 = disabled, 1 = enabled */
-#else
popts->ECC_mode = 0; /* 0 = disabled, 1 = enabled */
+#ifdef CONFIG_DDR_ECC
+ if (hwconfig_sub("fsl_ddr", "ecc")) {
+ if (hwconfig_subarg_cmp("fsl_ddr", "ecc", "on"))
+ popts->ECC_mode = 1;
+ } else
+ popts->ECC_mode = 1;
#endif
popts->ECC_init_using_memctl = 1; /* 0 = use DMA, 1 = use memctl */
@@ -78,6 +78,13 @@ If the DDR controller supports address hashing, it can be enabled by hwconfig.
Syntax is:
hwconfig=fsl_ddr:addr_hash=true
+Memory controller ECC on/off
+============================
+If ECC is enabled in board configuratoin file, i.e. #define CONFIG_DDR_ECC,
+ECC can be turned on/off by hwconfig.
+
+Syntax is
+hwconfig=fsl_ddr:ecc=off
Memory testing options for mpc85xx
==================================
Add fsl_ddr:ecc=on in hwconfig. If ECC is enabled in board configuration file, ECC can be turned on/off by this switch. If this switch is omitted, it is ON by default. Syntax is hwconfig=fsl_ddr:ecc=on Signed-off-by: York Sun <yorksun@freescale.com> --- arch/powerpc/cpu/mpc8xxx/ddr/options.c | 9 ++++++--- doc/README.fsl-ddr | 7 +++++++ 2 files changed, 13 insertions(+), 3 deletions(-)