2 * Copyright 2009-2011 Freescale Semiconductor, Inc.
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.
13 #include <asm/fsl_ddr_sdram.h>
14 #include <asm/fsl_ddr_dimm_params.h>
15 #include <asm/fsl_law.h>
17 DECLARE_GLOBAL_DATA_PTR;
21 * Fixed sdram init -- doesn't use serial presence detect.
23 extern fixed_ddr_parm_t fixed_ddr_parm_0[];
24 #if (CONFIG_NUM_DDR_CONTROLLERS == 2)
25 extern fixed_ddr_parm_t fixed_ddr_parm_1[];
28 phys_size_t fixed_sdram(void)
32 fsl_ddr_cfg_regs_t ddr_cfg_regs;
34 unsigned int lawbar1_target_id;
35 ulong ddr_freq, ddr_freq_mhz;
37 ddr_freq = get_ddr_freq(0);
38 ddr_freq_mhz = ddr_freq / 1000000;
40 printf("Configuring DDR for %s MT/s data rate\n",
41 strmhz(buf, ddr_freq));
43 for (i = 0; fixed_ddr_parm_0[i].max_freq > 0; i++) {
44 if ((ddr_freq_mhz > fixed_ddr_parm_0[i].min_freq) &&
45 (ddr_freq_mhz <= fixed_ddr_parm_0[i].max_freq)) {
47 fixed_ddr_parm_0[i].ddr_settings,
48 sizeof(ddr_cfg_regs));
53 if (fixed_ddr_parm_0[i].max_freq == 0)
54 panic("Unsupported DDR data rate %s MT/s data rate\n",
55 strmhz(buf, ddr_freq));
57 ddr_size = (phys_size_t) CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
58 ddr_cfg_regs.ddr_cdr1 = DDR_CDR1_DHC_EN;
59 fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
61 #if (CONFIG_NUM_DDR_CONTROLLERS == 2)
63 fixed_ddr_parm_1[i].ddr_settings,
64 sizeof(ddr_cfg_regs));
65 ddr_cfg_regs.ddr_cdr1 = DDR_CDR1_DHC_EN;
66 fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 1);
70 * setup laws for DDR. If not interleaving, presuming half memory on
71 * DDR1 and the other half on DDR2
73 if (fixed_ddr_parm_0[i].ddr_settings->cs[0].config & 0x20000000) {
74 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
76 LAW_TRGT_IF_DDR_INTRLV) < 0) {
77 printf("ERROR setting Local Access Windows for DDR\n");
81 #if (CONFIG_NUM_DDR_CONTROLLERS == 2)
82 /* We require both controllers have identical DIMMs */
83 lawbar1_target_id = LAW_TRGT_IF_DDR_1;
84 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
86 lawbar1_target_id) < 0) {
87 printf("ERROR setting Local Access Windows for DDR\n");
90 lawbar1_target_id = LAW_TRGT_IF_DDR_2;
91 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE + ddr_size / 2,
93 lawbar1_target_id) < 0) {
94 printf("ERROR setting Local Access Windows for DDR\n");
98 lawbar1_target_id = LAW_TRGT_IF_DDR_1;
99 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
101 lawbar1_target_id) < 0) {
102 printf("ERROR setting Local Access Windows for DDR\n");
111 u32 datarate_mhz_low;
112 u32 datarate_mhz_high;
117 u32 write_data_delay;
119 } board_specific_parameters_t;
121 const board_specific_parameters_t board_specific_parameters_udimm[][30] = {
124 * memory controller 0
125 * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
126 * mhz| mhz|ranks|adjst| start | |delay |
128 { 0, 850, 4, 4, 6, 0xff, 2, 0},
129 {851, 950, 4, 5, 7, 0xff, 2, 0},
130 {951, 1050, 4, 5, 8, 0xff, 2, 0},
131 {1051, 1250, 4, 5, 10, 0xff, 2, 0},
132 {1251, 1350, 4, 5, 11, 0xff, 2, 0},
133 {1351, 1666, 4, 5, 12, 0xff, 2, 0},
134 { 0, 850, 2, 5, 6, 0xff, 2, 0},
135 {851, 950, 2, 5, 7, 0xff, 2, 0},
136 {951, 1050, 2, 5, 7, 0xff, 2, 0},
137 {1051, 1250, 2, 4, 6, 0xff, 2, 0},
138 {1251, 1350, 2, 5, 7, 0xff, 2, 0},
139 {1351, 1666, 2, 5, 8, 0xff, 2, 0},
140 { 0, 850, 1, 4, 5, 0xff, 2, 0},
141 {851, 950, 1, 4, 7, 0xff, 2, 0},
142 {951, 1050, 1, 4, 8, 0xff, 2, 0},
143 {1051, 1250, 1, 4, 8, 0xff, 2, 0},
144 {1251, 1350, 1, 4, 8, 0xff, 2, 0},
145 {1351, 1666, 1, 4, 8, 0xff, 2, 0},
150 * memory controller 1
151 * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
152 * mhz| mhz|ranks|adjst| start | |delay |
154 { 0, 850, 4, 4, 6, 0xff, 2, 0},
155 {851, 950, 4, 5, 7, 0xff, 2, 0},
156 {951, 1050, 4, 5, 8, 0xff, 2, 0},
157 {1051, 1250, 4, 5, 10, 0xff, 2, 0},
158 {1251, 1350, 4, 5, 11, 0xff, 2, 0},
159 {1351, 1666, 4, 5, 12, 0xff, 2, 0},
160 { 0, 850, 2, 5, 6, 0xff, 2, 0},
161 {851, 950, 2, 5, 7, 0xff, 2, 0},
162 {951, 1050, 2, 5, 7, 0xff, 2, 0},
163 {1051, 1250, 2, 4, 6, 0xff, 2, 0},
164 {1251, 1350, 2, 5, 7, 0xff, 2, 0},
165 {1351, 1666, 2, 5, 8, 0xff, 2, 0},
166 { 0, 850, 1, 4, 5, 0xff, 2, 0},
167 {851, 950, 1, 4, 7, 0xff, 2, 0},
168 {951, 1050, 1, 4, 8, 0xff, 2, 0},
169 {1051, 1250, 1, 4, 8, 0xff, 2, 0},
170 {1251, 1350, 1, 4, 8, 0xff, 2, 0},
171 {1351, 1666, 1, 4, 8, 0xff, 2, 0},
175 const board_specific_parameters_t board_specific_parameters_rdimm[][30] = {
178 * memory controller 0
179 * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
180 * mhz| mhz|ranks|adjst| start | |delay |
182 { 0, 850, 4, 4, 6, 0xff, 2, 0},
183 {851, 950, 4, 5, 7, 0xff, 2, 0},
184 {951, 1050, 4, 5, 8, 0xff, 2, 0},
185 {1051, 1250, 4, 5, 10, 0xff, 2, 0},
186 {1251, 1350, 4, 5, 11, 0xff, 2, 0},
187 {1351, 1666, 4, 5, 12, 0xff, 2, 0},
188 { 0, 850, 2, 4, 6, 0xff, 2, 0},
189 {851, 950, 2, 4, 7, 0xff, 2, 0},
190 {951, 1050, 2, 4, 7, 0xff, 2, 0},
191 {1051, 1250, 2, 4, 8, 0xff, 2, 0},
192 {1251, 1350, 2, 4, 8, 0xff, 2, 0},
193 {1351, 1666, 2, 4, 8, 0xff, 2, 0},
194 { 0, 850, 1, 4, 5, 0xff, 2, 0},
195 {851, 950, 1, 4, 7, 0xff, 2, 0},
196 {951, 1050, 1, 4, 8, 0xff, 2, 0},
197 {1051, 1250, 1, 4, 8, 0xff, 2, 0},
198 {1251, 1350, 1, 4, 8, 0xff, 2, 0},
199 {1351, 1666, 1, 4, 8, 0xff, 2, 0},
204 * memory controller 1
205 * lo| hi| num| clk| wrlvl | cpo |wrdata|2T
206 * mhz| mhz|ranks|adjst| start | |delay |
208 { 0, 850, 4, 4, 6, 0xff, 2, 0},
209 {851, 950, 4, 5, 7, 0xff, 2, 0},
210 {951, 1050, 4, 5, 8, 0xff, 2, 0},
211 {1051, 1250, 4, 5, 10, 0xff, 2, 0},
212 {1251, 1350, 4, 5, 11, 0xff, 2, 0},
213 {1351, 1666, 4, 5, 12, 0xff, 2, 0},
214 { 0, 850, 2, 4, 6, 0xff, 2, 0},
215 {851, 950, 2, 4, 7, 0xff, 2, 0},
216 {951, 1050, 2, 4, 7, 0xff, 2, 0},
217 {1051, 1250, 2, 4, 8, 0xff, 2, 0},
218 {1251, 1350, 2, 4, 8, 0xff, 2, 0},
219 {1351, 1666, 2, 4, 8, 0xff, 2, 0},
220 { 0, 850, 1, 4, 5, 0xff, 2, 0},
221 {851, 950, 1, 4, 7, 0xff, 2, 0},
222 {951, 1050, 1, 4, 8, 0xff, 2, 0},
223 {1051, 1250, 1, 4, 8, 0xff, 2, 0},
224 {1251, 1350, 1, 4, 8, 0xff, 2, 0},
225 {1351, 1666, 1, 4, 8, 0xff, 2, 0},
229 void fsl_ddr_board_options(memctl_options_t *popts,
230 dimm_params_t *pdimm,
231 unsigned int ctrl_num)
233 const board_specific_parameters_t *pbsp;
238 if (popts->registered_dimm_en) {
239 pbsp = &(board_specific_parameters_rdimm[ctrl_num][0]);
240 num_params = sizeof(board_specific_parameters_rdimm[ctrl_num]) /
241 sizeof(board_specific_parameters_rdimm[0][0]);
243 pbsp = &(board_specific_parameters_udimm[ctrl_num][0]);
244 num_params = sizeof(board_specific_parameters_udimm[ctrl_num]) /
245 sizeof(board_specific_parameters_udimm[0][0]);
247 /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
248 * freqency and n_banks specified in board_specific_parameters table.
250 ddr_freq = get_ddr_freq(0) / 1000000;
251 for (i = 0; i < num_params; i++) {
252 if (ddr_freq >= pbsp->datarate_mhz_low &&
253 ddr_freq <= pbsp->datarate_mhz_high &&
254 pdimm[0].n_ranks == pbsp->n_ranks) {
255 popts->cpo_override = pbsp->cpo;
256 popts->write_data_delay = pbsp->write_data_delay;
257 popts->clk_adjust = pbsp->clk_adjust;
258 popts->wrlvl_start = pbsp->wrlvl_start;
259 popts->twoT_en = pbsp->force_2T;
265 if (i == num_params) {
266 printf("Warning: board specific timing not found "
267 "for data rate %lu MT/s!\n", ddr_freq);
271 * Factors to consider for half-strength driver enable:
272 * - number of DIMMs installed
274 popts->half_strength_driver_enable = 0;
276 * Write leveling override
278 popts->wrlvl_override = 1;
279 popts->wrlvl_sample = 0xf;
282 * Rtt and Rtt_WR override
284 popts->rtt_override = 0;
286 /* Enable ZQ calibration */
289 /* DHC_EN =1, ODT = 60 Ohm */
290 popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
293 phys_size_t initdram(int board_type)
295 phys_size_t dram_size;
297 puts("Initializing....");
301 dram_size = fsl_ddr_sdram();
303 puts("using fixed parameters\n");
304 dram_size = fixed_sdram();
307 dram_size = setup_ddr_tlbs(dram_size / 0x100000);
308 dram_size *= 0x100000;