1 /*
2 * Copyright 2008 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * Version 2 as published by the Free Software Foundation.
7 */
8
9 #ifndef FSL_DDR_MAIN_H
10 #define FSL_DDR_MAIN_H
11
12 #include <asm/fsl_ddr_sdram.h>
13 #include <asm/fsl_ddr_dimm_params.h>
14
15 #include "common_timing_params.h"
16
17 /*
18 * Bind the main DDR setup driver's generic names
19 * to this specific DDR technology.
20 */
21 static __inline__ int
compute_dimm_parameters(const generic_spd_eeprom_t * spd,dimm_params_t * pdimm,unsigned int dimm_number)22 compute_dimm_parameters(const generic_spd_eeprom_t *spd,
23 dimm_params_t *pdimm,
24 unsigned int dimm_number)
25 {
26 return ddr_compute_dimm_parameters(spd, pdimm, dimm_number);
27 }
28
29 /*
30 * Data Structures
31 *
32 * All data structures have to be on the stack
33 */
34 #define CONFIG_SYS_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS
35 #define CONFIG_SYS_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR
36
37 typedef struct {
38 generic_spd_eeprom_t
39 spd_installed_dimms[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
40 struct dimm_params_s
41 dimm_params[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
42 memctl_options_t memctl_opts[CONFIG_SYS_NUM_DDR_CTLRS];
43 common_timing_params_t common_timing_params[CONFIG_SYS_NUM_DDR_CTLRS];
44 fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CONFIG_SYS_NUM_DDR_CTLRS];
45 } fsl_ddr_info_t;
46
47 /* Compute steps */
48 #define STEP_GET_SPD (1 << 0)
49 #define STEP_COMPUTE_DIMM_PARMS (1 << 1)
50 #define STEP_COMPUTE_COMMON_PARMS (1 << 2)
51 #define STEP_GATHER_OPTS (1 << 3)
52 #define STEP_ASSIGN_ADDRESSES (1 << 4)
53 #define STEP_COMPUTE_REGS (1 << 5)
54 #define STEP_PROGRAM_REGS (1 << 6)
55 #define STEP_ALL 0xFFF
56
57 extern unsigned long long
58 fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step);
59
60 extern const char * step_to_string(unsigned int step);
61
62 extern unsigned int
63 compute_fsl_memctl_config_regs(const memctl_options_t *popts,
64 fsl_ddr_cfg_regs_t *ddr,
65 const common_timing_params_t *common_dimm,
66 const dimm_params_t *dimm_parameters,
67 unsigned int dbw_capacity_adjust);
68 extern unsigned int
69 compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params,
70 common_timing_params_t *outpdimm,
71 unsigned int number_of_dimms);
72 extern unsigned int populate_memctl_options(int all_DIMMs_registered,
73 memctl_options_t *popts,
74 dimm_params_t *pdimm,
75 unsigned int ctrl_num);
76
77 extern unsigned int mclk_to_picos(unsigned int mclk);
78 extern unsigned int get_memory_clk_period_ps(void);
79 extern unsigned int picos_to_mclk(unsigned int picos);
80
81 #endif
82