include/fsl_ddr_sdram.h - u-boot-mtk - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2008-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
  */

 #ifndef FSL_DDR_MEMCTL_H
 #define FSL_DDR_MEMCTL_H

 /*
  * Pick a basic DDR Technology.
  */
 #include <ddr_spd.h>
 #include <fsl_ddrc_version.h>

 #define SDRAM_TYPE_DDR1		2
 #define SDRAM_TYPE_DDR2		3
 #define SDRAM_TYPE_LPDDR1	6
 #define SDRAM_TYPE_DDR3		7
 #define SDRAM_TYPE_DDR4		5

 #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 */

 #define DDR3_RTT_OFF		0
 #define DDR3_RTT_60_OHM		1 /* RTT_Nom = RZQ/4 */
 #define DDR3_RTT_120_OHM	2 /* RTT_Nom = RZQ/2 */
 #define DDR3_RTT_40_OHM		3 /* RTT_Nom = RZQ/6 */
 #define DDR3_RTT_20_OHM		4 /* RTT_Nom = RZQ/12 */
 #define DDR3_RTT_30_OHM		5 /* RTT_Nom = RZQ/8 */

 #define DDR4_RTT_OFF		0
 #define DDR4_RTT_60_OHM		1	/* RZQ/4 */
 #define DDR4_RTT_120_OHM	2	/* RZQ/2 */
 #define DDR4_RTT_40_OHM		3	/* RZQ/6 */
 #define DDR4_RTT_240_OHM	4	/* RZQ/1 */
 #define DDR4_RTT_48_OHM		5	/* RZQ/5 */
 #define DDR4_RTT_80_OHM		6	/* RZQ/3 */
 #define DDR4_RTT_34_OHM		7	/* RZQ/7 */

 #define DDR2_RTT_OFF		0
 #define DDR2_RTT_75_OHM		1
 #define DDR2_RTT_150_OHM	2
 #define DDR2_RTT_50_OHM		3

 #if defined(CONFIG_SYS_FSL_DDR1)
 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR	(1)
 typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
 #ifndef CONFIG_FSL_SDRAM_TYPE
 #define CONFIG_FSL_SDRAM_TYPE	SDRAM_TYPE_DDR1
 #endif
 #elif defined(CONFIG_SYS_FSL_DDR2)
 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR	(3)
 typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
 #ifndef CONFIG_FSL_SDRAM_TYPE
 #define CONFIG_FSL_SDRAM_TYPE	SDRAM_TYPE_DDR2
 #endif
 #elif defined(CONFIG_SYS_FSL_DDR3)
 typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
 #ifndef CONFIG_FSL_SDRAM_TYPE
 #define CONFIG_FSL_SDRAM_TYPE	SDRAM_TYPE_DDR3
 #endif
 #elif defined(CONFIG_SYS_FSL_DDR4)
 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR	(3)	/* FIXME */
 typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t;
 #ifndef CONFIG_FSL_SDRAM_TYPE
 #define CONFIG_FSL_SDRAM_TYPE	SDRAM_TYPE_DDR4
 #endif
 #endif	/* #if defined(CONFIG_SYS_FSL_DDR1) */

 #define FSL_DDR_ODT_NEVER		0x0
 #define FSL_DDR_ODT_CS			0x1
 #define FSL_DDR_ODT_ALL_OTHER_CS	0x2
 #define FSL_DDR_ODT_OTHER_DIMM		0x3
 #define FSL_DDR_ODT_ALL			0x4
 #define FSL_DDR_ODT_SAME_DIMM		0x5
 #define FSL_DDR_ODT_CS_AND_OTHER_DIMM	0x6
 #define FSL_DDR_ODT_OTHER_CS_ONSAMEDIMM	0x7

 /* define bank(chip select) interleaving mode */
 #define FSL_DDR_CS0_CS1			0x40
 #define FSL_DDR_CS2_CS3			0x20
 #define FSL_DDR_CS0_CS1_AND_CS2_CS3	(FSL_DDR_CS0_CS1 | FSL_DDR_CS2_CS3)
 #define FSL_DDR_CS0_CS1_CS2_CS3		(FSL_DDR_CS0_CS1_AND_CS2_CS3 | 0x04)

 /* define memory controller interleaving mode */
 #define FSL_DDR_CACHE_LINE_INTERLEAVING	0x0
 #define FSL_DDR_PAGE_INTERLEAVING	0x1
 #define FSL_DDR_BANK_INTERLEAVING	0x2
 #define FSL_DDR_SUPERBANK_INTERLEAVING	0x3
 #define FSL_DDR_256B_INTERLEAVING	0x8
 #define FSL_DDR_3WAY_1KB_INTERLEAVING	0xA
 #define FSL_DDR_3WAY_4KB_INTERLEAVING	0xC
 #define FSL_DDR_3WAY_8KB_INTERLEAVING	0xD
 /* placeholder for 4-way interleaving */
 #define FSL_DDR_4WAY_1KB_INTERLEAVING	0x1A
 #define FSL_DDR_4WAY_4KB_INTERLEAVING	0x1C
 #define FSL_DDR_4WAY_8KB_INTERLEAVING	0x1D

 #define SDRAM_CS_CONFIG_EN		0x80000000

 /* DDR_SDRAM_CFG - DDR SDRAM Control Configuration
  */
 #define SDRAM_CFG_MEM_EN		0x80000000
 #define SDRAM_CFG_SREN			0x40000000
 #define SDRAM_CFG_ECC_EN		0x20000000
 #define SDRAM_CFG_RD_EN			0x10000000
 #define SDRAM_CFG_SDRAM_TYPE_DDR1	0x02000000
 #define SDRAM_CFG_SDRAM_TYPE_DDR2	0x03000000
 #define SDRAM_CFG_SDRAM_TYPE_MASK	0x07000000
 #define SDRAM_CFG_SDRAM_TYPE_SHIFT	24
 #define SDRAM_CFG_DYN_PWR		0x00200000
 #define SDRAM_CFG_DBW_MASK		0x00180000
 #define SDRAM_CFG_DBW_SHIFT		19
 #define SDRAM_CFG_32_BE			0x00080000
 #define SDRAM_CFG_16_BE			0x00100000
 #define SDRAM_CFG_8_BE			0x00040000
 #define SDRAM_CFG_NCAP			0x00020000
 #define SDRAM_CFG_2T_EN			0x00008000
 #define SDRAM_CFG_BI			0x00000001

 #define SDRAM_CFG2_FRC_SR		0x80000000
 #define SDRAM_CFG2_D_INIT		0x00000010
 #define SDRAM_CFG2_AP_EN		0x00000020
 #define SDRAM_CFG2_ODT_CFG_MASK		0x00600000
 #define SDRAM_CFG2_ODT_NEVER		0
 #define SDRAM_CFG2_ODT_ONLY_WRITE	1
 #define SDRAM_CFG2_ODT_ONLY_READ	2
 #define SDRAM_CFG2_ODT_ALWAYS		3

 #define SDRAM_INTERVAL_BSTOPRE	0x3FFF
 #define TIMING_CFG_2_CPO_MASK	0x0F800000

 #if defined(CONFIG_SYS_FSL_DDR_VER) && \
 	(CONFIG_SYS_FSL_DDR_VER > FSL_DDR_VER_4_4)
 #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

 /* DDR_EOR register */
 #define DDR_EOR_RD_REOD_DIS	0x07000000
 #define DDR_EOR_WD_REOD_DIS	0x00100000

 /* DDR_MD_CNTL */
 #define MD_CNTL_MD_EN		0x80000000
 #define MD_CNTL_CS_SEL_CS0	0x00000000
 #define MD_CNTL_CS_SEL_CS1	0x10000000
 #define MD_CNTL_CS_SEL_CS2	0x20000000
 #define MD_CNTL_CS_SEL_CS3	0x30000000
 #define MD_CNTL_CS_SEL_CS0_CS1	0x40000000
 #define MD_CNTL_CS_SEL_CS2_CS3	0x50000000
 #define MD_CNTL_MD_SEL_MR	0x00000000
 #define MD_CNTL_MD_SEL_EMR	0x01000000
 #define MD_CNTL_MD_SEL_EMR2	0x02000000
 #define MD_CNTL_MD_SEL_EMR3	0x03000000
 #define MD_CNTL_SET_REF		0x00800000
 #define MD_CNTL_SET_PRE		0x00400000
 #define MD_CNTL_CKE_CNTL_LOW	0x00100000
 #define MD_CNTL_CKE_CNTL_HIGH	0x00200000
 #define MD_CNTL_WRCW		0x00080000
 #define MD_CNTL_MD_VALUE(x)	(x & 0x0000FFFF)
 #define MD_CNTL_CS_SEL(x)	(((x) & 0x7) << 28)
 #define MD_CNTL_MD_SEL(x)	(((x) & 0xf) << 24)

 /* DDR_CDR1 */
 #define DDR_CDR1_DHC_EN	0x80000000
 #define DDR_CDR1_V0PT9_EN	0x40000000
 #define DDR_CDR1_ODT_SHIFT	17
 #define DDR_CDR1_ODT_MASK	0x6
 #define DDR_CDR2_ODT_MASK	0x1
 #define DDR_CDR1_ODT(x) ((x & DDR_CDR1_ODT_MASK) << DDR_CDR1_ODT_SHIFT)
 #define DDR_CDR2_ODT(x) (x & DDR_CDR2_ODT_MASK)
 #define DDR_CDR2_VREF_OVRD(x)	(0x00008080 | ((((x) - 37) & 0x3F) << 8))
 #define DDR_CDR2_VREF_TRAIN_EN	0x00000080
 #define DDR_CDR2_VREF_RANGE_2	0x00000040

 /* DDR ERR_DISABLE */
 #define DDR_ERR_DISABLE_APED	(1 << 8)  /* Address parity error disable */

 /* Mode Registers */
 #define DDR_MR5_CA_PARITY_LAT_4_CLK	0x1 /* for DDR4-1600/1866/2133 */
 #define DDR_MR5_CA_PARITY_LAT_5_CLK	0x2 /* for DDR4-2400 */

 /* DEBUG_26 register */
 #define DDR_CAS_TO_PRE_SUB_MASK  0x0000f000 /* CAS to preamble subtract value */
 #define DDR_CAS_TO_PRE_SUB_SHIFT 12

 /* DEBUG_29 register */
 #define DDR_TX_BD_DIS	(1 << 10) /* Transmit Bit Deskew Disable */


 #if (defined(CONFIG_SYS_FSL_DDR_VER) && \
 	(CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7))
 #ifdef CONFIG_SYS_FSL_DDR3L
 #define DDR_CDR_ODT_OFF		0x0
 #define DDR_CDR_ODT_120ohm	0x1
 #define DDR_CDR_ODT_200ohm	0x2
 #define DDR_CDR_ODT_75ohm	0x3
 #define DDR_CDR_ODT_60ohm	0x5
 #define DDR_CDR_ODT_46ohm	0x7
 #elif defined(CONFIG_SYS_FSL_DDR4)
 #define DDR_CDR_ODT_OFF		0x0
 #define DDR_CDR_ODT_100ohm	0x1
 #define DDR_CDR_ODT_120OHM	0x2
 #define DDR_CDR_ODT_80ohm	0x3
 #define DDR_CDR_ODT_60ohm	0x4
 #define DDR_CDR_ODT_40ohm	0x5
 #define DDR_CDR_ODT_50ohm	0x6
 #define DDR_CDR_ODT_30ohm	0x7
 #else
 #define DDR_CDR_ODT_OFF		0x0
 #define DDR_CDR_ODT_120ohm	0x1
 #define DDR_CDR_ODT_180ohm	0x2
 #define DDR_CDR_ODT_75ohm	0x3
 #define DDR_CDR_ODT_110ohm	0x4
 #define DDR_CDR_ODT_60hm	0x5
 #define DDR_CDR_ODT_70ohm	0x6
 #define DDR_CDR_ODT_47ohm	0x7
 #endif /* DDR3L */
 #else
 #define DDR_CDR_ODT_75ohm	0x0
 #define DDR_CDR_ODT_55ohm	0x1
 #define DDR_CDR_ODT_60ohm	0x2
 #define DDR_CDR_ODT_50ohm	0x3
 #define DDR_CDR_ODT_150ohm	0x4
 #define DDR_CDR_ODT_43ohm	0x5
 #define DDR_CDR_ODT_120ohm	0x6
 #endif

 #define DDR_INIT_ADDR_EXT_UIA	(1 << 31)

 /* Record of register values computed */
 typedef struct fsl_ddr_cfg_regs_s {
 	struct {
 		unsigned int bnds;
 		unsigned int config;
 		unsigned int config_2;
 	} cs[CONFIG_CHIP_SELECTS_PER_CTRL];
 	unsigned int timing_cfg_3;
 	unsigned int timing_cfg_0;
 	unsigned int timing_cfg_1;
 	unsigned int timing_cfg_2;
 	unsigned int ddr_sdram_cfg;
 	unsigned int ddr_sdram_cfg_2;
 	unsigned int ddr_sdram_cfg_3;
 	unsigned int ddr_sdram_mode;
 	unsigned int ddr_sdram_mode_2;
 	unsigned int ddr_sdram_mode_3;
 	unsigned int ddr_sdram_mode_4;
 	unsigned int ddr_sdram_mode_5;
 	unsigned int ddr_sdram_mode_6;
 	unsigned int ddr_sdram_mode_7;
 	unsigned int ddr_sdram_mode_8;
 	unsigned int ddr_sdram_mode_9;
 	unsigned int ddr_sdram_mode_10;
 	unsigned int ddr_sdram_mode_11;
 	unsigned int ddr_sdram_mode_12;
 	unsigned int ddr_sdram_mode_13;
 	unsigned int ddr_sdram_mode_14;
 	unsigned int ddr_sdram_mode_15;
 	unsigned int ddr_sdram_mode_16;
 	unsigned int ddr_sdram_md_cntl;
 	unsigned int ddr_sdram_interval;
 	unsigned int ddr_data_init;
 	unsigned int ddr_sdram_clk_cntl;
 	unsigned int ddr_init_addr;
 	unsigned int ddr_init_ext_addr;
 	unsigned int timing_cfg_4;
 	unsigned int timing_cfg_5;
 	unsigned int timing_cfg_6;
 	unsigned int timing_cfg_7;
 	unsigned int timing_cfg_8;
 	unsigned int timing_cfg_9;
 	unsigned int ddr_zq_cntl;
 	unsigned int ddr_wrlvl_cntl;
 	unsigned int ddr_wrlvl_cntl_2;
 	unsigned int ddr_wrlvl_cntl_3;
 	unsigned int ddr_sr_cntr;
 	unsigned int ddr_sdram_rcw_1;
 	unsigned int ddr_sdram_rcw_2;
 	unsigned int ddr_sdram_rcw_3;
 	unsigned int ddr_sdram_rcw_4;
 	unsigned int ddr_sdram_rcw_5;
 	unsigned int ddr_sdram_rcw_6;
 	unsigned int dq_map_0;
 	unsigned int dq_map_1;
 	unsigned int dq_map_2;
 	unsigned int dq_map_3;
 	unsigned int ddr_eor;
 	unsigned int ddr_cdr1;
 	unsigned int ddr_cdr2;
 	unsigned int err_disable;
 	unsigned int err_int_en;
 	unsigned int debug[64];
 } fsl_ddr_cfg_regs_t;

 typedef struct memctl_options_partial_s {
 	unsigned int all_dimms_ecc_capable;
 	unsigned int all_dimms_tckmax_ps;
 	unsigned int all_dimms_burst_lengths_bitmask;
 	unsigned int all_dimms_registered;
 	unsigned int all_dimms_unbuffered;
 	/*	unsigned int lowest_common_spd_caslat; */
 	unsigned int all_dimms_minimum_trcd_ps;
 } memctl_options_partial_t;

 #define DDR_DATA_BUS_WIDTH_64 0
 #define DDR_DATA_BUS_WIDTH_32 1
 #define DDR_DATA_BUS_WIDTH_16 2
 #define DDR_CSWL_CS0	0x04000001
 /*
  * Generalized parameters for memory controller configuration,
  * might be a little specific to the FSL memory controller
  */
 typedef struct memctl_options_s {
 	/*
 	 * Memory organization parameters
 	 *
 	 * if DIMM is present in the system
 	 * where DIMMs are with respect to chip select
 	 * where chip selects are with respect to memory boundaries
 	 */
 	unsigned int registered_dimm_en;    /* use registered DIMM support */

 	/* Options local to a Chip Select */
 	struct cs_local_opts_s {
 		unsigned int auto_precharge;
 		unsigned int odt_rd_cfg;
 		unsigned int odt_wr_cfg;
 		unsigned int odt_rtt_norm;
 		unsigned int odt_rtt_wr;
 	} cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL];

 	/* Special configurations for chip select */
 	unsigned int memctl_interleaving;
 	unsigned int memctl_interleaving_mode;
 	unsigned int ba_intlv_ctl;
 	unsigned int addr_hash;

 	/* Operational mode parameters */
 	unsigned int ecc_mode;	 /* Use ECC? */
 	/* Initialize ECC using memory controller? */
 	unsigned int ecc_init_using_memctl;
 	unsigned int dqs_config;	/* Use DQS? maybe only with DDR2? */
 	/* SREN - self-refresh during sleep */
 	unsigned int self_refresh_in_sleep;
 	/* SR_IE - Self-refresh interrupt enable */
 	unsigned int self_refresh_interrupt_en;
 	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;	/* BL4, OTF and BL8 */
 	/* On-The-Fly Burst Chop enable */
 	unsigned int otf_burst_chop_en;
 	/* mirrior DIMMs for DDR3 */
 	unsigned int mirrored_dimm;
 	unsigned int quad_rank_present;
 	unsigned int ap_en;	/* address parity enable for RDIMM/DDR4-UDIMM */
 	unsigned int x4_en;	/* enable x4 devices */
 	unsigned int package_3ds;

 	/* Global Timing Parameters */
 	unsigned int cas_latency_override;
 	unsigned int cas_latency_override_value;
 	unsigned int use_derated_caslat;
 	unsigned int additive_latency_override;
 	unsigned int additive_latency_override_value;

 	unsigned int clk_adjust;		/* */
 	unsigned int cpo_override;		/* override timing_cfg_2[CPO]*/
 	unsigned int cpo_sample;		/* optimize debug_29[24:31] */
 	unsigned int write_data_delay;		/* DQS adjust */

 	unsigned int cswl_override;
 	unsigned int wrlvl_override;
 	unsigned int wrlvl_sample;		/* Write leveling */
 	unsigned int wrlvl_start;
 	unsigned int wrlvl_ctl_2;
 	unsigned int wrlvl_ctl_3;

 	unsigned int half_strength_driver_enable;
 	unsigned int twot_en;
 	unsigned int threet_en;
 	unsigned int bstopre;
 	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 */
 	unsigned int rtt_wr_override_value;	/* this is Rtt_WR 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;
 	/* RCW override for RDIMM */
 	unsigned int rcw_override;
 	unsigned int rcw_1;
 	unsigned int rcw_2;
 	unsigned int rcw_3;
 	/* control register 1 */
 	unsigned int ddr_cdr1;
 	unsigned int ddr_cdr2;

 	unsigned int trwt_override;
 	unsigned int trwt;			/* read-to-write turnaround */
 } memctl_options_t;

 phys_size_t fsl_ddr_sdram(void);
 phys_size_t fsl_ddr_sdram_size(void);
 phys_size_t fsl_other_ddr_sdram(unsigned long long base,
 				unsigned int first_ctrl,
 				unsigned int num_ctrls,
 				unsigned int dimm_slots_per_ctrl,
 				int (*board_need_reset)(void),
 				void (*board_reset)(void),
 				void (*board_de_reset)(void));
 extern int fsl_use_spd(void);
 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 			     unsigned int ctrl_num, int step);
 u32 fsl_ddr_get_intl3r(void);
 void print_ddr_info(unsigned int start_ctrl);

 static void __board_assert_mem_reset(void)
 {
 }

 static void __board_deassert_mem_reset(void)
 {
 }

 void board_assert_mem_reset(void)
 	__attribute__((weak, alias("__board_assert_mem_reset")));

 void board_deassert_mem_reset(void)
 	__attribute__((weak, alias("__board_deassert_mem_reset")));

 static int __board_need_mem_reset(void)
 {
 	return 0;
 }

 int board_need_mem_reset(void)
 	__attribute__((weak, alias("__board_need_mem_reset")));

 #if defined(CONFIG_DEEP_SLEEP)
 void board_mem_sleep_setup(void);
 bool is_warm_boot(void);
 int fsl_dp_resume(void);
 #endif

 /*
  * The 85xx boards have a common prototype for fixed_sdram so put the
  * declaration here.
  */
 #ifdef CONFIG_MPC85xx
 extern phys_size_t fixed_sdram(void);
 #endif

 #if defined(CONFIG_DDR_ECC)
 extern void ddr_enable_ecc(unsigned int dram_size);
 #endif


 typedef struct fixed_ddr_parm{
 	int min_freq;
 	int max_freq;
 	fsl_ddr_cfg_regs_t *ddr_settings;
 } fixed_ddr_parm_t;

 /**
  * fsl_initdram() - Set up the SDRAM
  *
  * @return 0 if OK, -ve on error
  */
 int fsl_initdram(void);

 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* Copyright 2008-2016 Freescale Semiconductor, Inc.
	* Copyright 2017-2018 NXP Semiconductor
	*/

	#ifndef FSL_DDR_MEMCTL_H
	#define FSL_DDR_MEMCTL_H

	/*
	* Pick a basic DDR Technology.
	*/
	#include <ddr_spd.h>
	#include <fsl_ddrc_version.h>

	#define SDRAM_TYPE_DDR1 2
	#define SDRAM_TYPE_DDR2 3
	#define SDRAM_TYPE_LPDDR1 6
	#define SDRAM_TYPE_DDR3 7
	#define SDRAM_TYPE_DDR4 5

	#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 */

	#define DDR3_RTT_OFF 0
	#define DDR3_RTT_60_OHM 1 /* RTT_Nom = RZQ/4 */
	#define DDR3_RTT_120_OHM 2 /* RTT_Nom = RZQ/2 */
	#define DDR3_RTT_40_OHM 3 /* RTT_Nom = RZQ/6 */
	#define DDR3_RTT_20_OHM 4 /* RTT_Nom = RZQ/12 */
	#define DDR3_RTT_30_OHM 5 /* RTT_Nom = RZQ/8 */

	#define DDR4_RTT_OFF 0
	#define DDR4_RTT_60_OHM 1 /* RZQ/4 */
	#define DDR4_RTT_120_OHM 2 /* RZQ/2 */
	#define DDR4_RTT_40_OHM 3 /* RZQ/6 */
	#define DDR4_RTT_240_OHM 4 /* RZQ/1 */
	#define DDR4_RTT_48_OHM 5 /* RZQ/5 */
	#define DDR4_RTT_80_OHM 6 /* RZQ/3 */
	#define DDR4_RTT_34_OHM 7 /* RZQ/7 */

	#define DDR2_RTT_OFF 0
	#define DDR2_RTT_75_OHM 1
	#define DDR2_RTT_150_OHM 2
	#define DDR2_RTT_50_OHM 3

	#if defined(CONFIG_SYS_FSL_DDR1)
	#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (1)
	typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
	#ifndef CONFIG_FSL_SDRAM_TYPE
	#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR1
	#endif
	#elif defined(CONFIG_SYS_FSL_DDR2)
	#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3)
	typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
	#ifndef CONFIG_FSL_SDRAM_TYPE
	#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR2
	#endif
	#elif defined(CONFIG_SYS_FSL_DDR3)
	typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
	#ifndef CONFIG_FSL_SDRAM_TYPE
	#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR3
	#endif
	#elif defined(CONFIG_SYS_FSL_DDR4)
	#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */
	typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t;
	#ifndef CONFIG_FSL_SDRAM_TYPE
	#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR4
	#endif
	#endif /* #if defined(CONFIG_SYS_FSL_DDR1) */

	#define FSL_DDR_ODT_NEVER 0x0
	#define FSL_DDR_ODT_CS 0x1
	#define FSL_DDR_ODT_ALL_OTHER_CS 0x2
	#define FSL_DDR_ODT_OTHER_DIMM 0x3
	#define FSL_DDR_ODT_ALL 0x4
	#define FSL_DDR_ODT_SAME_DIMM 0x5
	#define FSL_DDR_ODT_CS_AND_OTHER_DIMM 0x6
	#define FSL_DDR_ODT_OTHER_CS_ONSAMEDIMM 0x7

	/* define bank(chip select) interleaving mode */
	#define FSL_DDR_CS0_CS1 0x40
	#define FSL_DDR_CS2_CS3 0x20
	#define FSL_DDR_CS0_CS1_AND_CS2_CS3 (FSL_DDR_CS0_CS1 \| FSL_DDR_CS2_CS3)
	#define FSL_DDR_CS0_CS1_CS2_CS3 (FSL_DDR_CS0_CS1_AND_CS2_CS3 \| 0x04)

	/* define memory controller interleaving mode */
	#define FSL_DDR_CACHE_LINE_INTERLEAVING 0x0
	#define FSL_DDR_PAGE_INTERLEAVING 0x1
	#define FSL_DDR_BANK_INTERLEAVING 0x2
	#define FSL_DDR_SUPERBANK_INTERLEAVING 0x3
	#define FSL_DDR_256B_INTERLEAVING 0x8
	#define FSL_DDR_3WAY_1KB_INTERLEAVING 0xA
	#define FSL_DDR_3WAY_4KB_INTERLEAVING 0xC
	#define FSL_DDR_3WAY_8KB_INTERLEAVING 0xD
	/* placeholder for 4-way interleaving */
	#define FSL_DDR_4WAY_1KB_INTERLEAVING 0x1A
	#define FSL_DDR_4WAY_4KB_INTERLEAVING 0x1C
	#define FSL_DDR_4WAY_8KB_INTERLEAVING 0x1D

	#define SDRAM_CS_CONFIG_EN 0x80000000

	/* DDR_SDRAM_CFG - DDR SDRAM Control Configuration
	*/
	#define SDRAM_CFG_MEM_EN 0x80000000
	#define SDRAM_CFG_SREN 0x40000000
	#define SDRAM_CFG_ECC_EN 0x20000000
	#define SDRAM_CFG_RD_EN 0x10000000
	#define SDRAM_CFG_SDRAM_TYPE_DDR1 0x02000000
	#define SDRAM_CFG_SDRAM_TYPE_DDR2 0x03000000
	#define SDRAM_CFG_SDRAM_TYPE_MASK 0x07000000
	#define SDRAM_CFG_SDRAM_TYPE_SHIFT 24
	#define SDRAM_CFG_DYN_PWR 0x00200000
	#define SDRAM_CFG_DBW_MASK 0x00180000
	#define SDRAM_CFG_DBW_SHIFT 19
	#define SDRAM_CFG_32_BE 0x00080000
	#define SDRAM_CFG_16_BE 0x00100000
	#define SDRAM_CFG_8_BE 0x00040000
	#define SDRAM_CFG_NCAP 0x00020000
	#define SDRAM_CFG_2T_EN 0x00008000
	#define SDRAM_CFG_BI 0x00000001

	#define SDRAM_CFG2_FRC_SR 0x80000000
	#define SDRAM_CFG2_D_INIT 0x00000010
	#define SDRAM_CFG2_AP_EN 0x00000020
	#define SDRAM_CFG2_ODT_CFG_MASK 0x00600000
	#define SDRAM_CFG2_ODT_NEVER 0
	#define SDRAM_CFG2_ODT_ONLY_WRITE 1
	#define SDRAM_CFG2_ODT_ONLY_READ 2
	#define SDRAM_CFG2_ODT_ALWAYS 3

	#define SDRAM_INTERVAL_BSTOPRE 0x3FFF
	#define TIMING_CFG_2_CPO_MASK 0x0F800000

	#if defined(CONFIG_SYS_FSL_DDR_VER) && \
	(CONFIG_SYS_FSL_DDR_VER > FSL_DDR_VER_4_4)
	#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

	/* DDR_EOR register */
	#define DDR_EOR_RD_REOD_DIS 0x07000000
	#define DDR_EOR_WD_REOD_DIS 0x00100000

	/* DDR_MD_CNTL */
	#define MD_CNTL_MD_EN 0x80000000
	#define MD_CNTL_CS_SEL_CS0 0x00000000
	#define MD_CNTL_CS_SEL_CS1 0x10000000
	#define MD_CNTL_CS_SEL_CS2 0x20000000
	#define MD_CNTL_CS_SEL_CS3 0x30000000
	#define MD_CNTL_CS_SEL_CS0_CS1 0x40000000
	#define MD_CNTL_CS_SEL_CS2_CS3 0x50000000
	#define MD_CNTL_MD_SEL_MR 0x00000000
	#define MD_CNTL_MD_SEL_EMR 0x01000000
	#define MD_CNTL_MD_SEL_EMR2 0x02000000
	#define MD_CNTL_MD_SEL_EMR3 0x03000000
	#define MD_CNTL_SET_REF 0x00800000
	#define MD_CNTL_SET_PRE 0x00400000
	#define MD_CNTL_CKE_CNTL_LOW 0x00100000
	#define MD_CNTL_CKE_CNTL_HIGH 0x00200000
	#define MD_CNTL_WRCW 0x00080000
	#define MD_CNTL_MD_VALUE(x) (x & 0x0000FFFF)
	#define MD_CNTL_CS_SEL(x) (((x) & 0x7) << 28)
	#define MD_CNTL_MD_SEL(x) (((x) & 0xf) << 24)

	/* DDR_CDR1 */
	#define DDR_CDR1_DHC_EN 0x80000000
	#define DDR_CDR1_V0PT9_EN 0x40000000
	#define DDR_CDR1_ODT_SHIFT 17
	#define DDR_CDR1_ODT_MASK 0x6
	#define DDR_CDR2_ODT_MASK 0x1
	#define DDR_CDR1_ODT(x) ((x & DDR_CDR1_ODT_MASK) << DDR_CDR1_ODT_SHIFT)
	#define DDR_CDR2_ODT(x) (x & DDR_CDR2_ODT_MASK)
	#define DDR_CDR2_VREF_OVRD(x) (0x00008080 \| ((((x) - 37) & 0x3F) << 8))
	#define DDR_CDR2_VREF_TRAIN_EN 0x00000080
	#define DDR_CDR2_VREF_RANGE_2 0x00000040

	/* DDR ERR_DISABLE */
	#define DDR_ERR_DISABLE_APED (1 << 8) /* Address parity error disable */

	/* Mode Registers */
	#define DDR_MR5_CA_PARITY_LAT_4_CLK 0x1 /* for DDR4-1600/1866/2133 */
	#define DDR_MR5_CA_PARITY_LAT_5_CLK 0x2 /* for DDR4-2400 */

	/* DEBUG_26 register */
	#define DDR_CAS_TO_PRE_SUB_MASK 0x0000f000 /* CAS to preamble subtract value */
	#define DDR_CAS_TO_PRE_SUB_SHIFT 12

	/* DEBUG_29 register */
	#define DDR_TX_BD_DIS (1 << 10) /* Transmit Bit Deskew Disable */


	#if (defined(CONFIG_SYS_FSL_DDR_VER) && \
	(CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7))
	#ifdef CONFIG_SYS_FSL_DDR3L
	#define DDR_CDR_ODT_OFF 0x0
	#define DDR_CDR_ODT_120ohm 0x1
	#define DDR_CDR_ODT_200ohm 0x2
	#define DDR_CDR_ODT_75ohm 0x3
	#define DDR_CDR_ODT_60ohm 0x5
	#define DDR_CDR_ODT_46ohm 0x7
	#elif defined(CONFIG_SYS_FSL_DDR4)
	#define DDR_CDR_ODT_OFF 0x0
	#define DDR_CDR_ODT_100ohm 0x1
	#define DDR_CDR_ODT_120OHM 0x2
	#define DDR_CDR_ODT_80ohm 0x3
	#define DDR_CDR_ODT_60ohm 0x4
	#define DDR_CDR_ODT_40ohm 0x5
	#define DDR_CDR_ODT_50ohm 0x6
	#define DDR_CDR_ODT_30ohm 0x7
	#else
	#define DDR_CDR_ODT_OFF 0x0
	#define DDR_CDR_ODT_120ohm 0x1
	#define DDR_CDR_ODT_180ohm 0x2
	#define DDR_CDR_ODT_75ohm 0x3
	#define DDR_CDR_ODT_110ohm 0x4
	#define DDR_CDR_ODT_60hm 0x5
	#define DDR_CDR_ODT_70ohm 0x6
	#define DDR_CDR_ODT_47ohm 0x7
	#endif /* DDR3L */
	#else
	#define DDR_CDR_ODT_75ohm 0x0
	#define DDR_CDR_ODT_55ohm 0x1
	#define DDR_CDR_ODT_60ohm 0x2
	#define DDR_CDR_ODT_50ohm 0x3
	#define DDR_CDR_ODT_150ohm 0x4
	#define DDR_CDR_ODT_43ohm 0x5
	#define DDR_CDR_ODT_120ohm 0x6
	#endif

	#define DDR_INIT_ADDR_EXT_UIA (1 << 31)

	/* Record of register values computed */
	typedef struct fsl_ddr_cfg_regs_s {
	struct {
	unsigned int bnds;
	unsigned int config;
	unsigned int config_2;
	} cs[CONFIG_CHIP_SELECTS_PER_CTRL];
	unsigned int timing_cfg_3;
	unsigned int timing_cfg_0;
	unsigned int timing_cfg_1;
	unsigned int timing_cfg_2;
	unsigned int ddr_sdram_cfg;
	unsigned int ddr_sdram_cfg_2;
	unsigned int ddr_sdram_cfg_3;
	unsigned int ddr_sdram_mode;
	unsigned int ddr_sdram_mode_2;
	unsigned int ddr_sdram_mode_3;
	unsigned int ddr_sdram_mode_4;
	unsigned int ddr_sdram_mode_5;
	unsigned int ddr_sdram_mode_6;
	unsigned int ddr_sdram_mode_7;
	unsigned int ddr_sdram_mode_8;
	unsigned int ddr_sdram_mode_9;
	unsigned int ddr_sdram_mode_10;
	unsigned int ddr_sdram_mode_11;
	unsigned int ddr_sdram_mode_12;
	unsigned int ddr_sdram_mode_13;
	unsigned int ddr_sdram_mode_14;
	unsigned int ddr_sdram_mode_15;
	unsigned int ddr_sdram_mode_16;
	unsigned int ddr_sdram_md_cntl;
	unsigned int ddr_sdram_interval;
	unsigned int ddr_data_init;
	unsigned int ddr_sdram_clk_cntl;
	unsigned int ddr_init_addr;
	unsigned int ddr_init_ext_addr;
	unsigned int timing_cfg_4;
	unsigned int timing_cfg_5;
	unsigned int timing_cfg_6;
	unsigned int timing_cfg_7;
	unsigned int timing_cfg_8;
	unsigned int timing_cfg_9;
	unsigned int ddr_zq_cntl;
	unsigned int ddr_wrlvl_cntl;
	unsigned int ddr_wrlvl_cntl_2;
	unsigned int ddr_wrlvl_cntl_3;
	unsigned int ddr_sr_cntr;
	unsigned int ddr_sdram_rcw_1;
	unsigned int ddr_sdram_rcw_2;
	unsigned int ddr_sdram_rcw_3;
	unsigned int ddr_sdram_rcw_4;
	unsigned int ddr_sdram_rcw_5;
	unsigned int ddr_sdram_rcw_6;
	unsigned int dq_map_0;
	unsigned int dq_map_1;
	unsigned int dq_map_2;
	unsigned int dq_map_3;
	unsigned int ddr_eor;
	unsigned int ddr_cdr1;
	unsigned int ddr_cdr2;
	unsigned int err_disable;
	unsigned int err_int_en;
	unsigned int debug[64];
	} fsl_ddr_cfg_regs_t;

	typedef struct memctl_options_partial_s {
	unsigned int all_dimms_ecc_capable;
	unsigned int all_dimms_tckmax_ps;
	unsigned int all_dimms_burst_lengths_bitmask;
	unsigned int all_dimms_registered;
	unsigned int all_dimms_unbuffered;
	/* unsigned int lowest_common_spd_caslat; */
	unsigned int all_dimms_minimum_trcd_ps;
	} memctl_options_partial_t;

	#define DDR_DATA_BUS_WIDTH_64 0
	#define DDR_DATA_BUS_WIDTH_32 1
	#define DDR_DATA_BUS_WIDTH_16 2
	#define DDR_CSWL_CS0 0x04000001
	/*
	* Generalized parameters for memory controller configuration,
	* might be a little specific to the FSL memory controller
	*/
	typedef struct memctl_options_s {
	/*
	* Memory organization parameters
	*
	* if DIMM is present in the system
	* where DIMMs are with respect to chip select
	* where chip selects are with respect to memory boundaries
	*/
	unsigned int registered_dimm_en; /* use registered DIMM support */

	/* Options local to a Chip Select */
	struct cs_local_opts_s {
	unsigned int auto_precharge;
	unsigned int odt_rd_cfg;
	unsigned int odt_wr_cfg;
	unsigned int odt_rtt_norm;
	unsigned int odt_rtt_wr;
	} cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL];

	/* Special configurations for chip select */
	unsigned int memctl_interleaving;
	unsigned int memctl_interleaving_mode;
	unsigned int ba_intlv_ctl;
	unsigned int addr_hash;

	/* Operational mode parameters */
	unsigned int ecc_mode; /* Use ECC? */
	/* Initialize ECC using memory controller? */
	unsigned int ecc_init_using_memctl;
	unsigned int dqs_config; /* Use DQS? maybe only with DDR2? */
	/* SREN - self-refresh during sleep */
	unsigned int self_refresh_in_sleep;
	/* SR_IE - Self-refresh interrupt enable */
	unsigned int self_refresh_interrupt_en;
	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; /* BL4, OTF and BL8 */
	/* On-The-Fly Burst Chop enable */
	unsigned int otf_burst_chop_en;
	/* mirrior DIMMs for DDR3 */
	unsigned int mirrored_dimm;
	unsigned int quad_rank_present;
	unsigned int ap_en; /* address parity enable for RDIMM/DDR4-UDIMM */
	unsigned int x4_en; /* enable x4 devices */
	unsigned int package_3ds;

	/* Global Timing Parameters */
	unsigned int cas_latency_override;
	unsigned int cas_latency_override_value;
	unsigned int use_derated_caslat;
	unsigned int additive_latency_override;
	unsigned int additive_latency_override_value;

	unsigned int clk_adjust; /* */
	unsigned int cpo_override; /* override timing_cfg_2[CPO]*/
	unsigned int cpo_sample; /* optimize debug_29[24:31] */
	unsigned int write_data_delay; /* DQS adjust */

	unsigned int cswl_override;
	unsigned int wrlvl_override;
	unsigned int wrlvl_sample; /* Write leveling */
	unsigned int wrlvl_start;
	unsigned int wrlvl_ctl_2;
	unsigned int wrlvl_ctl_3;

	unsigned int half_strength_driver_enable;
	unsigned int twot_en;
	unsigned int threet_en;
	unsigned int bstopre;
	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 */
	unsigned int rtt_wr_override_value; /* this is Rtt_WR 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;
	/* RCW override for RDIMM */
	unsigned int rcw_override;
	unsigned int rcw_1;
	unsigned int rcw_2;
	unsigned int rcw_3;
	/* control register 1 */
	unsigned int ddr_cdr1;
	unsigned int ddr_cdr2;

	unsigned int trwt_override;
	unsigned int trwt; /* read-to-write turnaround */
	} memctl_options_t;

	phys_size_t fsl_ddr_sdram(void);
	phys_size_t fsl_ddr_sdram_size(void);
	phys_size_t fsl_other_ddr_sdram(unsigned long long base,
	unsigned int first_ctrl,
	unsigned int num_ctrls,
	unsigned int dimm_slots_per_ctrl,
	int (*board_need_reset)(void),
	void (*board_reset)(void),
	void (*board_de_reset)(void));
	extern int fsl_use_spd(void);
	void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
	unsigned int ctrl_num, int step);
	u32 fsl_ddr_get_intl3r(void);
	void print_ddr_info(unsigned int start_ctrl);

	static void __board_assert_mem_reset(void)
	{
	}

	static void __board_deassert_mem_reset(void)
	{
	}

	void board_assert_mem_reset(void)
	__attribute__((weak, alias("__board_assert_mem_reset")));

	void board_deassert_mem_reset(void)
	__attribute__((weak, alias("__board_deassert_mem_reset")));

	static int __board_need_mem_reset(void)
	{
	return 0;
	}

	int board_need_mem_reset(void)
	__attribute__((weak, alias("__board_need_mem_reset")));

	#if defined(CONFIG_DEEP_SLEEP)
	void board_mem_sleep_setup(void);
	bool is_warm_boot(void);
	int fsl_dp_resume(void);
	#endif

	/*
	* The 85xx boards have a common prototype for fixed_sdram so put the
	* declaration here.
	*/
	#ifdef CONFIG_MPC85xx
	extern phys_size_t fixed_sdram(void);
	#endif

	#if defined(CONFIG_DDR_ECC)
	extern void ddr_enable_ecc(unsigned int dram_size);
	#endif


	typedef struct fixed_ddr_parm{
	int min_freq;
	int max_freq;
	fsl_ddr_cfg_regs_t *ddr_settings;
	} fixed_ddr_parm_t;

	/**
	* fsl_initdram() - Set up the SDRAM
	*
	* @return 0 if OK, -ve on error
	*/
	int fsl_initdram(void);

	#endif