2 * Copyright 2011-2012 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0
12 #include <fsl_ddr_sdram.h>
13 #include <fsl_ddr_dimm_params.h>
14 #include <asm/fsl_law.h>
16 DECLARE_GLOBAL_DATA_PTR
;
18 dimm_params_t ddr_raw_timing
= {
20 .rank_density
= 2147483648u,
21 .capacity
= 4294967296u,
22 .primary_sdram_width
= 64,
28 .n_banks_per_sdram_device
= 8,
29 .edc_config
= 2, /* ECC */
30 .burst_lengths_bitmask
= 0x0c,
33 .caslat_x
= 0x2fe << 4, /* 5,6,7,8,9,10,11,13 */
44 .refresh_rate_ps
= 7800000,
48 int fsl_ddr_get_dimm_params(dimm_params_t
*pdimm
,
49 unsigned int controller_number
,
50 unsigned int dimm_number
)
52 const char dimm_model
[] = "RAW timing DDR";
54 if ((controller_number
== 0) && (dimm_number
== 0)) {
55 memcpy(pdimm
, &ddr_raw_timing
, sizeof(dimm_params_t
));
56 memset(pdimm
->mpart
, 0, sizeof(pdimm
->mpart
));
57 memcpy(pdimm
->mpart
, dimm_model
, sizeof(dimm_model
) - 1);
63 struct board_specific_parameters
{
65 u32 datarate_mhz_high
;
76 * This table contains all valid speeds we want to override with board
77 * specific parameters. datarate_mhz_high values need to be in ascending order
78 * for each n_ranks group.
80 static const struct board_specific_parameters udimm0
[] = {
83 * num| hi| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T
84 * ranks| mhz|adjst| start | ctl2 | ctl3 | |delay |
86 {2, 1350, 4, 7, 0x09080807, 0x07060607, 0xff, 2, 0},
87 {2, 1666, 4, 7, 0x09080806, 0x06050607, 0xff, 2, 0},
88 {2, 1900, 3, 7, 0x08070706, 0x06040507, 0xff, 2, 0},
89 {1, 1350, 4, 7, 0x09080807, 0x07060607, 0xff, 2, 0},
90 {1, 1700, 4, 7, 0x09080806, 0x06050607, 0xff, 2, 0},
91 {1, 1900, 3, 7, 0x08070706, 0x06040507, 0xff, 2, 0},
95 static const struct board_specific_parameters
*udimms
[] = {
99 void fsl_ddr_board_options(memctl_options_t
*popts
,
100 dimm_params_t
*pdimm
,
101 unsigned int ctrl_num
)
103 const struct board_specific_parameters
*pbsp
, *pbsp_highest
= NULL
;
107 printf("Not supported controller number %d\n", ctrl_num
);
116 /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
117 * freqency and n_banks specified in board_specific_parameters table.
119 ddr_freq
= get_ddr_freq(0) / 1000000;
120 while (pbsp
->datarate_mhz_high
) {
121 if (pbsp
->n_ranks
== pdimm
->n_ranks
) {
122 if (ddr_freq
<= pbsp
->datarate_mhz_high
) {
123 popts
->cpo_override
= pbsp
->cpo
;
124 popts
->write_data_delay
=
125 pbsp
->write_data_delay
;
126 popts
->clk_adjust
= pbsp
->clk_adjust
;
127 popts
->wrlvl_start
= pbsp
->wrlvl_start
;
128 popts
->wrlvl_ctl_2
= pbsp
->wrlvl_ctl_2
;
129 popts
->wrlvl_ctl_3
= pbsp
->wrlvl_ctl_3
;
130 popts
->twot_en
= pbsp
->force_2t
;
139 printf("Error: board specific timing not found "
140 "for data rate %lu MT/s\n"
141 "Trying to use the highest speed (%u) parameters\n",
142 ddr_freq
, pbsp_highest
->datarate_mhz_high
);
143 popts
->cpo_override
= pbsp_highest
->cpo
;
144 popts
->write_data_delay
= pbsp_highest
->write_data_delay
;
145 popts
->clk_adjust
= pbsp_highest
->clk_adjust
;
146 popts
->wrlvl_start
= pbsp_highest
->wrlvl_start
;
147 popts
->twot_en
= pbsp_highest
->force_2t
;
149 panic("DIMM is not supported by this board");
153 * Factors to consider for half-strength driver enable:
154 * - number of DIMMs installed
156 popts
->half_strength_driver_enable
= 0;
158 * Write leveling override
160 popts
->wrlvl_override
= 1;
161 popts
->wrlvl_sample
= 0xf;
164 * Rtt and Rtt_WR override
166 popts
->rtt_override
= 0;
168 /* Enable ZQ calibration */
171 /* DHC_EN =1, ODT = 75 Ohm */
172 popts
->ddr_cdr1
= DDR_CDR1_DHC_EN
| DDR_CDR1_ODT(DDR_CDR_ODT_75ohm
);
173 popts
->ddr_cdr2
= DDR_CDR2_ODT(DDR_CDR_ODT_75ohm
);
176 phys_size_t
initdram(int board_type
)
178 phys_size_t dram_size
;
180 #if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
181 puts("Initializing....using SPD\n");
183 dram_size
= fsl_ddr_sdram();
185 dram_size
= setup_ddr_tlbs(dram_size
/ 0x100000);
186 dram_size
*= 0x100000;
189 dram_size
= fsl_ddr_sdram_size();
194 unsigned long long step_assign_addresses(fsl_ddr_info_t
*pinfo
,
195 unsigned int dbw_cap_adj
[])
198 unsigned long long total_mem
, current_mem_base
, total_ctlr_mem
;
199 unsigned long long rank_density
, ctlr_density
= 0;
201 current_mem_base
= 0ull;
204 * This board has soldered DDR chips. DDRC1 has two rank.
205 * DDRC2 has only one rank.
206 * Assigning DDRC2 to lower address and DDRC1 to higher address.
208 if (pinfo
->memctl_opts
[0].memctl_interleaving
) {
209 rank_density
= pinfo
->dimm_params
[0][0].rank_density
>>
211 ctlr_density
= rank_density
;
213 debug("rank density is 0x%llx, ctlr density is 0x%llx\n",
214 rank_density
, ctlr_density
);
215 for (i
= CONFIG_NUM_DDR_CONTROLLERS
- 1; i
>= 0; i
--) {
216 switch (pinfo
->memctl_opts
[i
].memctl_interleaving_mode
) {
217 case FSL_DDR_CACHE_LINE_INTERLEAVING
:
218 case FSL_DDR_PAGE_INTERLEAVING
:
219 case FSL_DDR_BANK_INTERLEAVING
:
220 case FSL_DDR_SUPERBANK_INTERLEAVING
:
221 total_ctlr_mem
= 2 * ctlr_density
;
224 panic("Unknown interleaving mode");
226 pinfo
->common_timing_params
[i
].base_address
=
228 pinfo
->common_timing_params
[i
].total_mem
=
230 total_mem
= current_mem_base
+ total_ctlr_mem
;
231 debug("ctrl %d base 0x%llx\n", i
, current_mem_base
);
232 debug("ctrl %d total 0x%llx\n", i
, total_ctlr_mem
);
236 * Simple linear assignment if memory
237 * controllers are not interleaved.
239 for (i
= CONFIG_NUM_DDR_CONTROLLERS
- 1; i
>= 0; i
--) {
241 pinfo
->common_timing_params
[i
].base_address
=
243 for (j
= 0; j
< CONFIG_DIMM_SLOTS_PER_CTLR
; j
++) {
244 /* Compute DIMM base addresses. */
245 unsigned long long cap
=
246 pinfo
->dimm_params
[i
][j
].capacity
;
247 pinfo
->dimm_params
[i
][j
].base_address
=
249 debug("ctrl %d dimm %d base 0x%llx\n",
250 i
, j
, current_mem_base
);
251 current_mem_base
+= cap
;
252 total_ctlr_mem
+= cap
;
254 debug("ctrl %d total 0x%llx\n", i
, total_ctlr_mem
);
255 pinfo
->common_timing_params
[i
].total_mem
=
257 total_mem
+= total_ctlr_mem
;
260 debug("Total mem by %s is 0x%llx\n", __func__
, total_mem
);