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https://github.com/brain-hackers/u-boot-brain
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Some 85xx processors have the advanced power management feature, such as wake up ARP, that needs enable the automatic self refresh. If the DDR controller pass the SR_IT (self refresh idle threshold) idle cycles, it will automatically enter self refresh. However, anytime one transaction is issued to the DDR controller, it will reset the counter and exit self refresh state. Signed-off-by: Dave Liu <daveliu@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com>
157 lines
4.7 KiB
C
157 lines
4.7 KiB
C
/*
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* Copyright 2008 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* Version 2 as published by the Free Software Foundation.
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*/
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#ifndef FSL_DDR_MEMCTL_H
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#define FSL_DDR_MEMCTL_H
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/*
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* Pick a basic DDR Technology.
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*/
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#include <ddr_spd.h>
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#define SDRAM_TYPE_DDR1 2
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#define SDRAM_TYPE_DDR2 3
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#define SDRAM_TYPE_LPDDR1 6
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#define SDRAM_TYPE_DDR3 7
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#if defined(CONFIG_FSL_DDR1)
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#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (1)
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typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
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#ifndef CONFIG_FSL_SDRAM_TYPE
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#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR1
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#endif
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#elif defined(CONFIG_FSL_DDR2)
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#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3)
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typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
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#ifndef CONFIG_FSL_SDRAM_TYPE
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#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR2
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#endif
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#elif defined(CONFIG_FSL_DDR3)
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#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */
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typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
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#ifndef CONFIG_FSL_SDRAM_TYPE
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#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR3
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#endif
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#endif /* #if defined(CONFIG_FSL_DDR1) */
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/* define bank(chip select) interleaving mode */
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#define FSL_DDR_CS0_CS1 0x40
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#define FSL_DDR_CS2_CS3 0x20
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#define FSL_DDR_CS0_CS1_AND_CS2_CS3 (FSL_DDR_CS0_CS1 | FSL_DDR_CS2_CS3)
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#define FSL_DDR_CS0_CS1_CS2_CS3 (FSL_DDR_CS0_CS1_AND_CS2_CS3 | 0x04)
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/* define memory controller interleaving mode */
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#define FSL_DDR_CACHE_LINE_INTERLEAVING 0x0
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#define FSL_DDR_PAGE_INTERLEAVING 0x1
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#define FSL_DDR_BANK_INTERLEAVING 0x2
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#define FSL_DDR_SUPERBANK_INTERLEAVING 0x3
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/* Record of register values computed */
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typedef struct fsl_ddr_cfg_regs_s {
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struct {
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unsigned int bnds;
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unsigned int config;
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unsigned int config_2;
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} cs[CONFIG_CHIP_SELECTS_PER_CTRL];
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unsigned int timing_cfg_3;
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unsigned int timing_cfg_0;
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unsigned int timing_cfg_1;
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unsigned int timing_cfg_2;
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unsigned int ddr_sdram_cfg;
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unsigned int ddr_sdram_cfg_2;
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unsigned int ddr_sdram_mode;
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unsigned int ddr_sdram_mode_2;
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unsigned int ddr_sdram_md_cntl;
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unsigned int ddr_sdram_interval;
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unsigned int ddr_data_init;
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unsigned int ddr_sdram_clk_cntl;
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unsigned int ddr_init_addr;
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unsigned int ddr_init_ext_addr;
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unsigned int timing_cfg_4;
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unsigned int timing_cfg_5;
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unsigned int ddr_zq_cntl;
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unsigned int ddr_wrlvl_cntl;
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unsigned int ddr_pd_cntl;
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unsigned int ddr_sr_cntr;
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unsigned int ddr_sdram_rcw_1;
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unsigned int ddr_sdram_rcw_2;
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} fsl_ddr_cfg_regs_t;
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typedef struct memctl_options_partial_s {
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unsigned int all_DIMMs_ECC_capable;
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unsigned int all_DIMMs_tCKmax_ps;
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unsigned int all_DIMMs_burst_lengths_bitmask;
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unsigned int all_DIMMs_registered;
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unsigned int all_DIMMs_unbuffered;
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/* unsigned int lowest_common_SPD_caslat; */
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unsigned int all_DIMMs_minimum_tRCD_ps;
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} memctl_options_partial_t;
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/*
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* Generalized parameters for memory controller configuration,
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* might be a little specific to the FSL memory controller
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*/
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typedef struct memctl_options_s {
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/*
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* Memory organization parameters
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*
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* if DIMM is present in the system
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* where DIMMs are with respect to chip select
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* where chip selects are with respect to memory boundaries
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*/
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unsigned int registered_dimm_en; /* use registered DIMM support */
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/* Options local to a Chip Select */
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struct cs_local_opts_s {
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unsigned int auto_precharge;
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unsigned int odt_rd_cfg;
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unsigned int odt_wr_cfg;
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} cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL];
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/* Special configurations for chip select */
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unsigned int memctl_interleaving;
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unsigned int memctl_interleaving_mode;
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unsigned int ba_intlv_ctl;
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/* Operational mode parameters */
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unsigned int ECC_mode; /* Use ECC? */
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/* Initialize ECC using memory controller? */
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unsigned int ECC_init_using_memctl;
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unsigned int DQS_config; /* Use DQS? maybe only with DDR2? */
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/* SREN - self-refresh during sleep */
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unsigned int self_refresh_in_sleep;
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unsigned int dynamic_power; /* DYN_PWR */
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/* memory data width to use (16-bit, 32-bit, 64-bit) */
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unsigned int data_bus_width;
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unsigned int burst_length; /* 4, 8 */
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/* Global Timing Parameters */
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unsigned int cas_latency_override;
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unsigned int cas_latency_override_value;
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unsigned int use_derated_caslat;
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unsigned int additive_latency_override;
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unsigned int additive_latency_override_value;
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unsigned int clk_adjust; /* */
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unsigned int cpo_override;
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unsigned int write_data_delay; /* DQS adjust */
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unsigned int half_strength_driver_enable;
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unsigned int twoT_en;
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unsigned int threeT_en;
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unsigned int bstopre;
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unsigned int tCKE_clock_pulse_width_ps; /* tCKE */
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unsigned int tFAW_window_four_activates_ps; /* tFAW -- FOUR_ACT */
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/* Automatic self refresh */
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unsigned int auto_self_refresh_en;
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unsigned int sr_it;
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} memctl_options_t;
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extern phys_size_t fsl_ddr_sdram(void);
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#endif
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