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6
7#include <common.h>
8#include <i2c.h>
9#include <hwconfig.h>
10#include <asm/mmu.h>
11#include <fsl_ddr_sdram.h>
12#include <fsl_ddr_dimm_params.h>
13#include <asm/fsl_law.h>
14#include "ddr.h"
15
16DECLARE_GLOBAL_DATA_PTR;
17
18void fsl_ddr_board_options(memctl_options_t *popts,
19 dimm_params_t *pdimm,
20 unsigned int ctrl_num)
21{
22 const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
23 ulong ddr_freq;
24
25 if (ctrl_num > 2) {
26 printf("Not supported controller number %d\n", ctrl_num);
27 return;
28 }
29 if (!pdimm->n_ranks)
30 return;
31
32
33
34
35
36 if (popts->registered_dimm_en)
37 pbsp = rdimms[0];
38 else
39 pbsp = udimms[0];
40
41
42
43
44
45 ddr_freq = get_ddr_freq(0) / 1000000;
46 while (pbsp->datarate_mhz_high) {
47 if (pbsp->n_ranks == pdimm->n_ranks &&
48 (pdimm->rank_density >> 30) >= pbsp->rank_gb) {
49 if (ddr_freq <= pbsp->datarate_mhz_high) {
50 popts->clk_adjust = pbsp->clk_adjust;
51 popts->wrlvl_start = pbsp->wrlvl_start;
52 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
53 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
54 goto found;
55 }
56 pbsp_highest = pbsp;
57 }
58 pbsp++;
59 }
60
61 if (pbsp_highest) {
62 printf("Error: board specific timing not found for data\n"
63 "rate %lu MT/s\n"
64 "Trying to use the highest speed (%u) parameters\n",
65 ddr_freq, pbsp_highest->datarate_mhz_high);
66 popts->clk_adjust = pbsp_highest->clk_adjust;
67 popts->wrlvl_start = pbsp_highest->wrlvl_start;
68 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
69 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
70 } else {
71 panic("DIMM is not supported by this board");
72 }
73found:
74 debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n"
75 "\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x,\n"
76 "wrlvl_ctrl_3 0x%x\n",
77 pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb,
78 pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2,
79 pbsp->wrlvl_ctl_3);
80
81
82
83
84
85 popts->half_strength_driver_enable = 0;
86
87
88
89 popts->wrlvl_override = 1;
90 popts->wrlvl_sample = 0xf;
91
92
93
94
95 popts->rtt_override = 0;
96
97
98 popts->zq_en = 1;
99
100
101 popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
102 popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
103
104
105 popts->cpo_sample = 0x64;
106}
107
108int dram_init(void)
109{
110 phys_size_t dram_size;
111
112 puts("Initializing....using SPD\n");
113
114#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
115 dram_size = fsl_ddr_sdram();
116#else
117
118 dram_size = fsl_ddr_sdram_size();
119#endif
120 dram_size = setup_ddr_tlbs(dram_size / 0x100000);
121 dram_size *= 0x100000;
122
123 gd->ram_size = dram_size;
124
125 return 0;
126}
127