2 * Copyright 2013 Freescale Semiconductor, Inc.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <asm/immap_85xx.h>
26 #include <asm/processor.h>
27 #include <asm/fsl_ddr_sdram.h>
28 #include <asm/fsl_ddr_dimm_params.h>
30 #include <asm/fsl_law.h>
32 DECLARE_GLOBAL_DATA_PTR;
34 #ifndef CONFIG_SYS_DDR_RAW_TIMING
36 fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
37 .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
38 .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
39 .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
40 .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_800,
41 .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_800,
42 .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_800,
43 .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_800,
44 .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
45 .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
46 .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_800,
47 .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_800,
48 .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
49 .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_800,
50 .ddr_data_init = CONFIG_MEM_INIT_VALUE,
51 .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_800,
52 .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
53 .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
54 .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
55 .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
56 .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
57 .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL_800,
58 .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
59 .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
60 .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
63 fsl_ddr_cfg_regs_t ddr_cfg_regs_1333 = {
64 .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
65 .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
66 .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
67 .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_1333,
68 .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_1333,
69 .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_1333,
70 .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_1333,
71 .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
72 .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
73 .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_1333,
74 .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_1333,
75 .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
76 .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_1333,
77 .ddr_data_init = CONFIG_MEM_INIT_VALUE,
78 .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_1333,
79 .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
80 .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
81 .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
82 .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
83 .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
84 .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL_1333,
85 .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
86 .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
87 .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
91 fixed_ddr_parm_t fixed_ddr_parm_0[] = {
92 {750, 850, &ddr_cfg_regs_800},
93 {1060, 1333, &ddr_cfg_regs_1333},
98 * Fixed sdram init -- doesn't use serial presence detect.
100 phys_size_t fixed_sdram(void)
104 fsl_ddr_cfg_regs_t ddr_cfg_regs;
105 phys_size_t ddr_size;
106 ulong ddr_freq, ddr_freq_mhz;
108 ddr_freq = get_ddr_freq(0);
109 ddr_freq_mhz = ddr_freq / 1000000;
111 printf("Configuring DDR for %s MT/s data rate\n",
112 strmhz(buf, ddr_freq));
114 for (i = 0; fixed_ddr_parm_0[i].max_freq > 0; i++) {
115 if ((ddr_freq_mhz > fixed_ddr_parm_0[i].min_freq) &&
116 (ddr_freq_mhz <= fixed_ddr_parm_0[i].max_freq)) {
117 memcpy(&ddr_cfg_regs, fixed_ddr_parm_0[i].ddr_settings,
118 sizeof(ddr_cfg_regs));
123 if (fixed_ddr_parm_0[i].max_freq == 0)
124 panic("Unsupported DDR data rate %s MT/s data rate\n",
125 strmhz(buf, ddr_freq));
127 ddr_size = (phys_size_t) CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
128 fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
130 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE, ddr_size,
131 LAW_TRGT_IF_DDR_1) < 0) {
132 printf("ERROR setting Local Access Windows for DDR\n");
139 #else /* CONFIG_SYS_DDR_RAW_TIMING */
140 /* Micron MT41J512M8_187E */
141 dimm_params_t ddr_raw_timing = {
143 .rank_density = 1073741824u,
144 .capacity = 1073741824u,
145 .primary_sdram_width = 32,
147 .registered_dimm = 0,
151 .n_banks_per_sdram_device = 8,
153 .burst_lengths_bitmask = 0x0c,
156 .caslat_X = 0x1e << 4, /* 5,6,7,8 */
167 .refresh_rate_ps = 7800000,
171 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
172 unsigned int controller_number,
173 unsigned int dimm_number)
175 const char dimm_model[] = "Fixed DDR on board";
177 if ((controller_number == 0) && (dimm_number == 0)) {
178 memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
179 memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
180 memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
186 void fsl_ddr_board_options(memctl_options_t *popts,
187 dimm_params_t *pdimm,
188 unsigned int ctrl_num)
191 popts->clk_adjust = 6;
192 popts->cpo_override = 0x1f;
193 popts->write_data_delay = 2;
194 popts->half_strength_driver_enable = 1;
195 /* Write leveling override */
197 popts->wrlvl_override = 1;
198 popts->wrlvl_sample = 0xf;
199 popts->wrlvl_start = 0x8;
200 popts->trwt_override = 1;
203 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
204 popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
205 popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
209 #endif /* CONFIG_SYS_DDR_RAW_TIMING */