diff options
Diffstat (limited to 'arch/ppc/include/asm/fsl_ddr_sdram.h')
| -rw-r--r-- | arch/ppc/include/asm/fsl_ddr_sdram.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/arch/ppc/include/asm/fsl_ddr_sdram.h b/arch/ppc/include/asm/fsl_ddr_sdram.h new file mode 100644 index 0000000000..3216a50633 --- /dev/null +++ b/arch/ppc/include/asm/fsl_ddr_sdram.h @@ -0,0 +1,207 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + */ + +#ifndef FSL_DDR_MEMCTL_H +#define FSL_DDR_MEMCTL_H + +/* + * Pick a basic DDR Technology. + */ +#include <ddr_spd.h> + +#define SDRAM_TYPE_DDR1 2 +#define SDRAM_TYPE_DDR2 3 +#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; +#ifndef CONFIG_FSL_SDRAM_TYPE +#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR1 +#endif +#elif defined(CONFIG_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_FSL_DDR3) +#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */ +typedef ddr3_spd_eeprom_t generic_spd_eeprom_t; +#ifndef CONFIG_FSL_SDRAM_TYPE +#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR3 +#endif +#endif /* #if defined(CONFIG_FSL_DDR1) */ + +/* 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 + +/* 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_32_BE 0x00080000 +#define SDRAM_CFG_8_BE 0x00040000 +#define SDRAM_CFG_NCAP 0x00020000 +#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 { + 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_mode; + unsigned int ddr_sdram_mode_2; + 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 ddr_zq_cntl; + unsigned int ddr_wrlvl_cntl; + unsigned int ddr_sr_cntr; + unsigned int ddr_sdram_rcw_1; + unsigned int ddr_sdram_rcw_2; +} 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; + +/* + * 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; + } 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; + + /* 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; + 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; + + /* 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; + unsigned int write_data_delay; /* DQS adjust */ + + unsigned int wrlvl_override; + unsigned int wrlvl_sample; /* Write leveling */ + unsigned int wrlvl_start; + + unsigned int half_strength_driver_enable; + unsigned int twoT_en; + unsigned int threeT_en; + unsigned int bstopre; + 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 */ + 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; +} memctl_options_t; + +extern phys_size_t fsl_ddr_sdram(void); +#endif |