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u-boot/arch/powerpc/include/asm/fsl_ddr_sdram.h
Becky Bruce 38dba0c2ff mpc85xx boards: initdram() cleanup/bugfix 
Correct initdram to use phys_size_t to represent the size of
dram; instead of changing this all over the place, and correcting
all the other random errors I've noticed, create a
common initdram that is used by all non-corenet 85xx parts.  Most
of the initdram() functions were identical, with 2 common differences:

1) DDR tlbs for the fixed_sdram case were set up in initdram() on
some boards, and were part of the tlb_table on others.  I have
changed them all over to the initdram() method - we shouldn't
be accessing dram before this point so they don't need to be
done sooner, and this seems cleaner.

2) Parts that require the DDR11 erratum workaround had different
implementations - I have adopted the version from the Freescale
errata document.  It also looks like some of the versions were
buggy, and, depending on timing, could have resulted in the
DDR controller being disabled.  This seems bad.

The xpedite boards had a common/fsl_8xxx_ddr.c; with this
change only the 517 board uses this so I have moved the ddr code
into that board's directory in xpedite517x.c

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-01-14 01:32:19 -06:00

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/*
* Copyright 2008-2010 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 */
#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 */
#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;
unsigned int ddr_eor;
} 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;
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;
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;
/* 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);
/*
* 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;
#endif
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