u-boot/include/fsl_ddr.h
York Sun 4e5b1bd0df driver/ddr: Change Freescale ARM DDR driver to support both big and little endian
Initially it was believed the DDR controller on Freescale ARM would have
big endian. But some platform will have little endian.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-02-21 11:06:13 -05:00

115 lines
3.7 KiB
C

/*
* Copyright 2008-2011 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_MAIN_H
#define FSL_DDR_MAIN_H
#include <fsl_ddr_sdram.h>
#include <fsl_ddr_dimm_params.h>
#include <common_timing_params.h>
#ifdef CONFIG_SYS_FSL_DDR_LE
#define ddr_in32(a) in_le32(a)
#define ddr_out32(a, v) out_le32(a, v)
#else
#define ddr_in32(a) in_be32(a)
#define ddr_out32(a, v) out_be32(a, v)
#endif
#if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM)
/*
* Bind the main DDR setup driver's generic names
* to this specific DDR technology.
*/
static __inline__ int
compute_dimm_parameters(const generic_spd_eeprom_t *spd,
dimm_params_t *pdimm,
unsigned int dimm_number)
{
return ddr_compute_dimm_parameters(spd, pdimm, dimm_number);
}
#endif
/*
* Data Structures
*
* All data structures have to be on the stack
*/
#define CONFIG_SYS_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS
#define CONFIG_SYS_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR
typedef struct {
generic_spd_eeprom_t
spd_installed_dimms[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
struct dimm_params_s
dimm_params[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
memctl_options_t memctl_opts[CONFIG_SYS_NUM_DDR_CTLRS];
common_timing_params_t common_timing_params[CONFIG_SYS_NUM_DDR_CTLRS];
fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CONFIG_SYS_NUM_DDR_CTLRS];
} fsl_ddr_info_t;
/* Compute steps */
#define STEP_GET_SPD (1 << 0)
#define STEP_COMPUTE_DIMM_PARMS (1 << 1)
#define STEP_COMPUTE_COMMON_PARMS (1 << 2)
#define STEP_GATHER_OPTS (1 << 3)
#define STEP_ASSIGN_ADDRESSES (1 << 4)
#define STEP_COMPUTE_REGS (1 << 5)
#define STEP_PROGRAM_REGS (1 << 6)
#define STEP_ALL 0xFFF
unsigned long long
fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
unsigned int size_only);
const char *step_to_string(unsigned int step);
unsigned int compute_fsl_memctl_config_regs(const memctl_options_t *popts,
fsl_ddr_cfg_regs_t *ddr,
const common_timing_params_t *common_dimm,
const dimm_params_t *dimm_parameters,
unsigned int dbw_capacity_adjust,
unsigned int size_only);
unsigned int compute_lowest_common_dimm_parameters(
const dimm_params_t *dimm_params,
common_timing_params_t *outpdimm,
unsigned int number_of_dimms);
unsigned int populate_memctl_options(int all_dimms_registered,
memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num);
void check_interleaving_options(fsl_ddr_info_t *pinfo);
unsigned int mclk_to_picos(unsigned int mclk);
unsigned int get_memory_clk_period_ps(void);
unsigned int picos_to_mclk(unsigned int picos);
void fsl_ddr_set_lawbar(
const common_timing_params_t *memctl_common_params,
unsigned int memctl_interleaved,
unsigned int ctrl_num);
int fsl_ddr_interactive_env_var_exists(void);
unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set);
void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
unsigned int ctrl_num);
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr);
void board_add_ram_info(int use_default);
/* processor specific function */
void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
unsigned int ctrl_num, int step);
/* board specific function */
int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
unsigned int controller_number,
unsigned int dimm_number);
#endif