powerpc/p2020ds: Integrated with P2020DS DDR change and enabled hwconfig

Enabled SPD
Enabled DDR2
Enabled hwconfig

Signed-off-by: York Sun <yorksun@freescale.com>

Makefile

@@ -1788,6 +1788,7 @@ P2010RDB_config \
 P2010RDB_NAND_config \
 P2010RDB_SDCARD_config \
 P2010RDB_SPIFLASH_config \
+P2020DS_DDR2_config \
 P2020RDB_config \
 P2020RDB_NAND_config \
 P2020RDB_SDCARD_config \

board/freescale/p2020ds/ddr.c

@@ -12,7 +12,7 @@
 #include <asm/fsl_ddr_sdram.h>
 #include <asm/fsl_ddr_dimm_params.h>
 
-static void get_spd(ddr3_spd_eeprom_t *spd, unsigned char i2c_address)
+static void get_spd(generic_spd_eeprom_t *spd, unsigned char i2c_address)
 {
 	i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr3_spd_eeprom_t));
 }
@@ -22,7 +22,7 @@ unsigned int fsl_ddr_get_mem_data_rate(void)
 	return get_ddr_freq(0);
 }
 
-void fsl_ddr_get_spd(ddr3_spd_eeprom_t *ctrl_dimms_spd,
+void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 		      unsigned int ctrl_num)
 {
 	unsigned int i;
@@ -51,27 +51,26 @@ typedef struct {
  *  cpo 2-0x1E (30)
  */
 
-
-/* XXX: these values need to be checked for all interleaving modes.  */
-/* XXX: No reliable dual-rank 800 MHz setting has been found.  It may
- *      seem reliable, but errors will appear when memory intensive
- *      program is run. */
-/* XXX: Single rank at 800 MHz is OK.  */
 const board_specific_parameters_t board_specific_parameters[][20] = {
 	{
 	/* 	memory controller 0 			*/
 	/*	  lo|  hi|  num|  clk| cpo|wrdata|2T	*/
 	/*	 mhz| mhz|ranks|adjst|    | delay|	*/
-		{  0, 333,    2,    6,   7,    3,  0},
-		{334, 400,    2,    6,   9,    3,  0},
-		{401, 549,    2,    6,  11,    3,  0},
-		{550, 680,    2,    1,  10,    5,  0},
-		{681, 850,    2,    1,  12,    5,  1},
-		{  0, 333,    1,    6,   7,    3,  0},
-		{334, 400,    1,    6,   9,    3,  0},
-		{401, 549,    1,    6,  11,    3,  0},
-		{550, 680,    1,    1,  10,    5,  0},
-		{681, 850,    1,    1,  12,    5,  0}
+#ifdef CONFIG_FSL_DDR2
+		{  0, 333,    2,    4,   0x1f,    2,  0},
+		{334, 400,    2,    4,   0x1f,    2,  0},
+		{401, 549,    2,    4,   0x1f,    2,  0},
+		{550, 680,    2,    4,   0x1f,    3,  0},
+		{681, 850,    2,    4,   0x1f,    4,  0},
+		{  0, 333,    1,    4,   0x1f,    2,  0},
+		{334, 400,    1,    4,   0x1f,    2,  0},
+		{401, 549,    1,    4,   0x1f,    2,  0},
+		{550, 680,    1,    4,   0x1f,    3,  0},
+		{681, 850,    1,    4,   0x1f,    4,  0}
+#else
+		{  0, 850,    2,    4,   0x1f,    4,  0},
+		{  0, 850,    1,    4,   0x1f,    4,  0}
+#endif
 	},
 };
 
@@ -92,18 +91,8 @@ void fsl_ddr_board_options(memctl_options_t *popts,
 	 * odt_wr_cfg to 3 for the even CS, 0 for the odd CS.
 	 */
 	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
-		if (i&1) {	/* odd CS */
 			popts->cs_local_opts[i].odt_rd_cfg = 0;
-			popts->cs_local_opts[i].odt_wr_cfg = 0;
-		} else {	/* even CS */
-			if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) {
-				popts->cs_local_opts[i].odt_rd_cfg = 0;
-				popts->cs_local_opts[i].odt_wr_cfg = 4;
-			} else if (CONFIG_DIMM_SLOTS_PER_CTLR == 2) {
-				popts->cs_local_opts[i].odt_rd_cfg = 3;
-				popts->cs_local_opts[i].odt_wr_cfg = 3;
-			}
-		}
+			popts->cs_local_opts[i].odt_wr_cfg = 1;
 	}
 
 	/* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
@@ -127,4 +116,13 @@ void fsl_ddr_board_options(memctl_options_t *popts,
 	 *	- number of DIMMs installed
 	 */
 	popts->half_strength_driver_enable = 0;
+	popts->wrlvl_en = 1;
+	/* Write leveling override */
+	popts->wrlvl_override = 1;
+	popts->wrlvl_sample = 0xa;
+	popts->wrlvl_start = 0x7;
+	/* Rtt and Rtt_WR override */
+	popts->rtt_override = 1;
+	popts->rtt_override_value = DDR3_RTT_120_OHM;
+	popts->rtt_wr_override_value = 0; /* Rtt_WR= dynamic ODT off */
 }

board/freescale/p2020ds/p2020ds.c

@@ -69,13 +69,16 @@ int checkboard(void)
 	return 0;
 }
 
+const char *board_hwconfig = "foo:bar=baz";
+const char *cpu_hwconfig = "foo:bar=baz";
+
 phys_size_t initdram(int board_type)
 {
 	phys_size_t dram_size = 0;
 
 	puts("Initializing....");
 
-#ifdef CONFIG_SPD_EEPROM
+#ifdef CONFIG_DDR_SPD
 	dram_size = fsl_ddr_sdram();
 #else
 	dram_size = fixed_sdram();
@@ -94,7 +97,7 @@ phys_size_t initdram(int board_type)
 	return dram_size;
 }
 
-#if !defined(CONFIG_SPD_EEPROM)
+#if !defined(CONFIG_DDR_SPD)
 /*
  * Fixed sdram init -- doesn't use serial presence detect.
  */

include/configs/P2020DS.h

@@ -92,7 +92,11 @@
 
 /* DDR Setup */
 #define CONFIG_VERY_BIG_RAM
+#ifdef CONFIG_MK_DDR2
+#define CONFIG_FSL_DDR2
+#else
 #define CONFIG_FSL_DDR3		1
+#endif
 #undef CONFIG_FSL_DDR_INTERACTIVE
 
 /* ECC will be enabled based on perf_mode environment variable */
@@ -109,6 +113,7 @@
 #define CONFIG_CHIP_SELECTS_PER_CTRL	2
 
 /* I2C addresses of SPD EEPROMs */
+#define CONFIG_DDR_SPD
 #define CONFIG_SYS_SPD_BUS_NUM		0	/* SPD EEPROM located on I2C bus 0 */
 #define SPD_EEPROM_ADDRESS1	0x51	/* CTLR 0 DIMM 0 */
 
@@ -228,6 +233,7 @@
 
 #define CONFIG_BOARD_EARLY_INIT_R	/* call board_early_init_r function */
 
+#define CONFIG_HWCONFIG			/* enable hwconfig */
 #define CONFIG_FSL_NGPIXIS		/* use common ngPIXIS code */
 
 #ifdef CONFIG_FSL_NGPIXIS