fsl-ddr: add the DDR3 SPD infrastructure

- support mirrored DIMMs, not support register DIMMs
- test passed on P2020DS board with MT9JSF12872AY-1G1D1
- test passed on MPC8569MDS board with MT8JSF12864HY-1G1D1

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Travis Wheatley <travis.wheatley@freescale.com>

3 files changed, 49 insertions, 2 deletions

diff --git a/include/asm-ppc/fsl_ddr_dimm_params.h b/include/asm-ppc/fsl_ddr_dimm_params.h
index c794eed..55923e0 100644
--- a/include/asm-ppc/fsl_ddr_dimm_params.h
+++ b/include/asm-ppc/fsl_ddr_dimm_params.h
@@ -33,9 +33,15 @@ typedef struct dimm_params_s {
 
 	/* used in computing base address of DIMMs */
 	unsigned long long base_address;
+	/* mirrored DIMMs */
+	unsigned int mirrored_dimm;	/* only for ddr3 */
 
 	/* DIMM timing parameters */
 
+	unsigned int mtb_ps;	/* medium timebase ps, only for ddr3 */
+	unsigned int tAA_ps;	/* minimum CAS latency time, only for ddr3 */
+	unsigned int tFAW_ps;	/* four active window delay, only for ddr3 */
+
 	/*
 	 * SDRAM clock periods
 	 * The range for these are 1000-10000 so a short should be sufficient
@@ -67,6 +73,7 @@ typedef struct dimm_params_s {
 
 	unsigned int refresh_rate_ps;
 
+	/* DDR3 doesn't need these as below */
 	unsigned int tIS_ps;	/* byte 32, spd->ca_setup */
 	unsigned int tIH_ps;	/* byte 33, spd->ca_hold */
 	unsigned int tDS_ps;	/* byte 34, spd->data_setup */
diff --git a/include/asm-ppc/fsl_ddr_sdram.h b/include/asm-ppc/fsl_ddr_sdram.h
index 6e3b255..c2e5aee 100644
--- a/include/asm-ppc/fsl_ddr_sdram.h
+++ b/include/asm-ppc/fsl_ddr_sdram.h
@@ -19,6 +19,11 @@
 #define SDRAM_TYPE_LPDDR1  6
 #define SDRAM_TYPE_DDR3    7
 
+#define DDR_BL4		4	/* burst length 4 */
+#define DDR_BC4		DDR_BL4	/* burst chop for ddr3 */
+#define DDR_OTF		6	/* on-the-fly BC4 and BL8 */
+#define DDR_BL8		8	/* burst length 8 */
+
 #if defined(CONFIG_FSL_DDR1)
 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR	(1)
 typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
@@ -68,6 +73,18 @@ typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
 #define SDRAM_CFG_2T_EN			0x00008000
 #define SDRAM_CFG_BI			0x00000001
 
+#if defined(CONFIG_P4080)
+#define RD_TO_PRE_MASK		0xf
+#define RD_TO_PRE_SHIFT		13
+#define WR_DATA_DELAY_MASK	0xf
+#define WR_DATA_DELAY_SHIFT	9
+#else
+#define RD_TO_PRE_MASK		0x7
+#define RD_TO_PRE_SHIFT		13
+#define WR_DATA_DELAY_MASK	0x7
+#define WR_DATA_DELAY_SHIFT	10
+#endif
+
 /* Record of register values computed */
 typedef struct fsl_ddr_cfg_regs_s {
 	struct {
@@ -145,7 +162,11 @@ typedef struct memctl_options_s {
 	unsigned int dynamic_power;	/* DYN_PWR */
 	/* memory data width to use (16-bit, 32-bit, 64-bit) */
 	unsigned int data_bus_width;
-	unsigned int burst_length;	/* 4, 8 */
+	unsigned int burst_length;	/* BL4, OTF and BL8 */
+	/* On-The-Fly Burst Chop enable */
+	unsigned int OTF_burst_chop_en;
+	/* mirrior DIMMs for DDR3 */
+	unsigned int mirrored_dimm;
 
 	/* Global Timing Parameters */
 	unsigned int cas_latency_override;
@@ -164,9 +185,17 @@ typedef struct memctl_options_s {
 	unsigned int tCKE_clock_pulse_width_ps;	/* tCKE */
 	unsigned int tFAW_window_four_activates_ps;	/* tFAW --  FOUR_ACT */
 
+	/* Rtt impedance */
+	unsigned int rtt_override;		/* rtt_override enable */
+	unsigned int rtt_override_value;	/* that is Rtt_Nom for DDR3 */
+
 	/* Automatic self refresh */
 	unsigned int auto_self_refresh_en;
 	unsigned int sr_it;
+	/* ZQ calibration */
+	unsigned int zq_en;
+	/* Write leveling */
+	unsigned int wrlvl_en;
 } memctl_options_t;
 
 extern phys_size_t fsl_ddr_sdram(void);
diff --git a/include/ddr_spd.h b/include/ddr_spd.h
index 6fdcef0..10402c5 100644
--- a/include/ddr_spd.h
+++ b/include/ddr_spd.h
@@ -184,7 +184,7 @@ typedef struct ddr3_spd_eeprom_s {
 	unsigned char module_type;     /*  3 Key Byte / Module Type */
 	unsigned char density_banks;   /*  4 SDRAM Density and Banks */
 	unsigned char addressing;      /*  5 SDRAM Addressing */
-	unsigned char res_6;           /*  6 Reserved */
+	unsigned char module_vdd;      /*  6 Module nominal voltage, VDD */
 	unsigned char organization;    /*  7 Module Organization */
 	unsigned char bus_width;       /*  8 Module Memory Bus Width */
 	unsigned char ftb_div;         /*  9 Fine Timebase (FTB)
@@ -273,6 +273,7 @@ extern unsigned int ddr1_spd_check(const ddr1_spd_eeprom_t *spd);
 extern void ddr1_spd_dump(const ddr1_spd_eeprom_t *spd);
 extern unsigned int ddr2_spd_check(const ddr2_spd_eeprom_t *spd);
 extern void ddr2_spd_dump(const ddr2_spd_eeprom_t *spd);
+extern unsigned int ddr3_spd_check(const ddr3_spd_eeprom_t *spd);
 
 /*
  * Byte 2 Fundamental Memory Types.
@@ -289,4 +290,14 @@ extern void ddr2_spd_dump(const ddr2_spd_eeprom_t *spd);
 #define SPD_MEMTYPE_DDR2_FBDIMM_PROBE	(0x0A)
 #define SPD_MEMTYPE_DDR3	(0x0B)
 
+/*
+ * Byte 3 Key Byte / Module Type for DDR3 SPD
+ */
+#define SPD_MODULETYPE_RDIMM		(0x01)
+#define SPD_MODULETYPE_UDIMM		(0x02)
+#define SPD_MODULETYPE_SODIMM		(0x03)
+#define SPD_MODULETYPE_MICRODIMM	(0x04)
+#define SPD_MODULETYPE_MINIRDIMM	(0x05)
+#define SPD_MODULETYPE_MINIUDIMM	(0x06)
+
 #endif /* _DDR_SPD_H_ */