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powerpc/c29xpcie: add DDR ECC on off config setting

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c29xpcie REV_A board DDR ECC chip has bad impedance in hardware,
force that kind of board to be DDR ECC off when booting.
Other version board config ECC on/off by hwconfig=fsl_ddr:ecc=on
in uboot enviroment.

Signed-off-by: Po Liu <Po.Liu@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Po Liu 2013-09-26 09:40:11 +08:00 committed by York Sun
parent 7e575c46c3
commit 9c25ee6d3a
2 changed files with 10 additions and 0 deletions
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8
board/freescale/c29xpcie/ddr.c
View File

@ -9,6 +9,9 @@
#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
#include "cpld.h"
#define C29XPCIE_HARDWARE_REVA 0x40
/*
* Micron MT41J128M16HA-15E
* */
@ -61,7 +64,9 @@ void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
int i;
popts->clk_adjust = 4;
popts->cpo_override = 0x1f;
popts->write_data_delay = 4;
@ -79,6 +84,9 @@ void fsl_ddr_board_options(memctl_options_t *popts,
popts->trwt_override = 1;
popts->trwt = 0;
if (in_8(&cpld_data->hwver) == C29XPCIE_HARDWARE_REVA)
popts->ecc_mode = 0;
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;

2
include/configs/C29XPCIE.h
View File

@ -433,6 +433,8 @@
#define CONFIG_BAUDRATE 115200
#define CONFIG_DEF_HWCONFIG fsl_ddr:ecc=on
#define CONFIG_EXTRA_ENV_SETTINGS \
"hwconfig=" __stringify(CONFIG_DEF_HWCONFIG) "\0" \
"netdev=eth0\0" \