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2
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4
5
6#include <common.h>
7#include <i2c.h>
8#include <hwconfig.h>
9#include <init.h>
10#include <log.h>
11#include <asm/mmu.h>
12#include <fsl_ddr_sdram.h>
13#include <fsl_ddr_dimm_params.h>
14#include <asm/fsl_law.h>
15
16DECLARE_GLOBAL_DATA_PTR;
17
18
19struct board_specific_parameters {
20 u32 n_ranks;
21 u32 datarate_mhz_high;
22 u32 clk_adjust;
23 u32 wrlvl_start;
24 u32 cpo;
25 u32 write_data_delay;
26 u32 force_2t;
27};
28
29
30
31
32
33
34static const struct board_specific_parameters udimm0[] = {
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36
37
38
39
40 {4, 850, 4, 6, 0xff, 2, 0},
41 {4, 950, 5, 7, 0xff, 2, 0},
42 {4, 1050, 5, 8, 0xff, 2, 0},
43 {4, 1250, 5, 10, 0xff, 2, 0},
44 {4, 1350, 5, 11, 0xff, 2, 0},
45 {4, 1666, 5, 12, 0xff, 2, 0},
46 {2, 850, 5, 6, 0xff, 2, 0},
47 {2, 1050, 5, 7, 0xff, 2, 0},
48 {2, 1250, 4, 6, 0xff, 2, 0},
49 {2, 1350, 5, 7, 0xff, 2, 0},
50 {2, 1666, 5, 8, 0xff, 2, 0},
51 {1, 1250, 4, 6, 0xff, 2, 0},
52 {1, 1335, 4, 7, 0xff, 2, 0},
53 {1, 1666, 4, 8, 0xff, 2, 0},
54 {}
55};
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57
58
59
60
61
62
63static const struct board_specific_parameters *udimms[] = {
64 udimm0,
65 udimm0,
66};
67
68static const struct board_specific_parameters rdimm0[] = {
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70
71
72
73
74 {4, 850, 4, 6, 0xff, 2, 0},
75 {4, 950, 5, 7, 0xff, 2, 0},
76 {4, 1050, 5, 8, 0xff, 2, 0},
77 {4, 1250, 5, 10, 0xff, 2, 0},
78 {4, 1350, 5, 11, 0xff, 2, 0},
79 {4, 1666, 5, 12, 0xff, 2, 0},
80 {2, 850, 4, 6, 0xff, 2, 0},
81 {2, 1050, 4, 7, 0xff, 2, 0},
82 {2, 1666, 4, 8, 0xff, 2, 0},
83 {1, 850, 4, 5, 0xff, 2, 0},
84 {1, 950, 4, 7, 0xff, 2, 0},
85 {1, 1666, 4, 8, 0xff, 2, 0},
86 {}
87};
88
89
90
91
92static const struct board_specific_parameters *rdimms[] = {
93 rdimm0,
94 rdimm0,
95};
96
97void fsl_ddr_board_options(memctl_options_t *popts,
98 dimm_params_t *pdimm,
99 unsigned int ctrl_num)
100{
101 const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
102 ulong ddr_freq;
103
104 if (ctrl_num > 1) {
105 printf("Wrong parameter for controller number %d", ctrl_num);
106 return;
107 }
108 if (!pdimm->n_ranks)
109 return;
110
111 if (popts->registered_dimm_en)
112 pbsp = rdimms[ctrl_num];
113 else
114 pbsp = udimms[ctrl_num];
115
116
117
118
119
120 ddr_freq = get_ddr_freq(0) / 1000000;
121 while (pbsp->datarate_mhz_high) {
122 if (pbsp->n_ranks == pdimm->n_ranks) {
123 if (ddr_freq <= pbsp->datarate_mhz_high) {
124 popts->cpo_override = pbsp->cpo;
125 popts->write_data_delay =
126 pbsp->write_data_delay;
127 popts->clk_adjust = pbsp->clk_adjust;
128 popts->wrlvl_start = pbsp->wrlvl_start;
129 popts->twot_en = pbsp->force_2t;
130 goto found;
131 }
132 pbsp_highest = pbsp;
133 }
134 pbsp++;
135 }
136
137 if (pbsp_highest) {
138 printf("Error: board specific timing not found for data rate %lu MT/s!\nTrying to use the highest speed (%u) parameters\n",
139 ddr_freq, pbsp_highest->datarate_mhz_high);
140 popts->cpo_override = pbsp_highest->cpo;
141 popts->write_data_delay = pbsp_highest->write_data_delay;
142 popts->clk_adjust = pbsp_highest->clk_adjust;
143 popts->wrlvl_start = pbsp_highest->wrlvl_start;
144 popts->twot_en = pbsp_highest->force_2t;
145 } else {
146 panic("DIMM is not supported by this board");
147 }
148found:
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150
151
152
153 popts->half_strength_driver_enable = 0;
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155
156
157 popts->wrlvl_override = 1;
158 popts->wrlvl_sample = 0xf;
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160
161
162
163 popts->rtt_override = 0;
164
165
166 popts->zq_en = 1;
167
168
169 popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
170}
171
172int dram_init(void)
173{
174 phys_size_t dram_size;
175
176 puts("Initializing....");
177
178 if (!fsl_use_spd())
179 panic("Cyrus only supports using SPD for DRAM\n");
180
181 puts("using SPD\n");
182 dram_size = fsl_ddr_sdram();
183
184 dram_size = setup_ddr_tlbs(dram_size / 0x100000);
185 dram_size *= 0x100000;
186
187 debug(" DDR: ");
188 gd->ram_size = dram_size;
189
190 return 0;
191}
192