board/freescale/p1_p2_rdb/ddr.c

   1 /*
   2  * Copyright 2009 Freescale Semiconductor, Inc.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   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.
  11  *
  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.
  16  *
  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,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <common.h>
  24 #include <asm/mmu.h>
  25 #include <asm/immap_85xx.h>
  26 #include <asm/processor.h>
  27 #include <asm/fsl_ddr_sdram.h>
  28 #include <asm/io.h>
  29 #include <asm/fsl_law.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
  34                                    unsigned int ctrl_num);
  35
  36 #define DATARATE_400MHZ 400000000
  37 #define DATARATE_533MHZ 533333333
  38 #define DATARATE_667MHZ 666666666
  39 #define DATARATE_800MHZ 800000000
  40
  41 #define CONFIG_SYS_DDR_CS0_BNDS         0x0000003F
  42 #define CONFIG_SYS_DDR_CS0_CONFIG       0x80014202
  43 #define CONFIG_SYS_DDR_CS0_CONFIG_2     0x00000000
  44 #define CONFIG_SYS_DDR_INIT_ADDR        0x00000000
  45 #define CONFIG_SYS_DDR_INIT_EXT_ADDR    0x00000000
  46 #define CONFIG_SYS_DDR_MODE_CONTROL     0x00000000
  47 #define CONFIG_SYS_DDR_ZQ_CONTROL       0x00000000
  48 #define CONFIG_SYS_DDR_WRLVL_CONTROL    0x00000000
  49 #define CONFIG_SYS_DDR_SR_CNTR          0x00000000
  50 #define CONFIG_SYS_DDR_RCW_1            0x00000000
  51 #define CONFIG_SYS_DDR_RCW_2            0x00000000
  52 #define CONFIG_SYS_DDR_CONTROL          0x43000000      /* Type = DDR2*/
  53 #define CONFIG_SYS_DDR_CONTROL_2        0x24401000
  54 #define CONFIG_SYS_DDR_TIMING_4         0x00000000
  55 #define CONFIG_SYS_DDR_TIMING_5         0x00000000
  56
  57 #define CONFIG_SYS_DDR_TIMING_3_400     0x00010000
  58 #define CONFIG_SYS_DDR_TIMING_0_400     0x00260802
  59 #define CONFIG_SYS_DDR_TIMING_1_400     0x39355322
  60 #define CONFIG_SYS_DDR_TIMING_2_400     0x1f9048ca
  61 #define CONFIG_SYS_DDR_CLK_CTRL_400     0x02800000
  62 #define CONFIG_SYS_DDR_MODE_1_400       0x00480432
  63 #define CONFIG_SYS_DDR_MODE_2_400       0x00000000
  64 #define CONFIG_SYS_DDR_INTERVAL_400     0x06180100
  65
  66 #define CONFIG_SYS_DDR_TIMING_3_533     0x00020000
  67 #define CONFIG_SYS_DDR_TIMING_0_533     0x00260802
  68 #define CONFIG_SYS_DDR_TIMING_1_533     0x4c47c432
  69 #define CONFIG_SYS_DDR_TIMING_2_533     0x0f9848ce
  70 #define CONFIG_SYS_DDR_CLK_CTRL_533     0x02800000
  71 #define CONFIG_SYS_DDR_MODE_1_533       0x00040642
  72 #define CONFIG_SYS_DDR_MODE_2_533       0x00000000
  73 #define CONFIG_SYS_DDR_INTERVAL_533     0x08200100
  74
  75 #define CONFIG_SYS_DDR_TIMING_3_667     0x00030000
  76 #define CONFIG_SYS_DDR_TIMING_0_667     0x55770802
  77 #define CONFIG_SYS_DDR_TIMING_1_667     0x5f599543
  78 #define CONFIG_SYS_DDR_TIMING_2_667     0x0fa074d1
  79 #define CONFIG_SYS_DDR_CLK_CTRL_667     0x03000000
  80 #define CONFIG_SYS_DDR_MODE_1_667       0x00040852
  81 #define CONFIG_SYS_DDR_MODE_2_667       0x00000000
  82 #define CONFIG_SYS_DDR_INTERVAL_667     0x0a280100
  83
  84 #define CONFIG_SYS_DDR_TIMING_3_800     0x00040000
  85 #define CONFIG_SYS_DDR_TIMING_0_800     0x55770802
  86 #define CONFIG_SYS_DDR_TIMING_1_800     0x6f6b6543
  87 #define CONFIG_SYS_DDR_TIMING_2_800     0x0fa074d1
  88 #define CONFIG_SYS_DDR_CLK_CTRL_800     0x02800000
  89 #define CONFIG_SYS_DDR_MODE_1_800       0x00040852
  90 #define CONFIG_SYS_DDR_MODE_2_800       0x00000000
  91 #define CONFIG_SYS_DDR_INTERVAL_800     0x0a280100
  92
  93 fsl_ddr_cfg_regs_t ddr_cfg_regs_400 = {
  94         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
  95         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
  96         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
  97         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_400,
  98         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_400,
  99         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_400,
 100         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_400,
 101         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 102         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 103         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_400,
 104         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_400,
 105         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 106         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_400,
 107         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 108         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_400,
 109         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 110         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 111         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 112         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 113         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 114         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 115         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 116         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 117         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 118 };
 119
 120 fsl_ddr_cfg_regs_t ddr_cfg_regs_533 = {
 121         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
 122         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
 123         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 124         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_533,
 125         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_533,
 126         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_533,
 127         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_533,
 128         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 129         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 130         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_533,
 131         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_533,
 132         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 133         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_533,
 134         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 135         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_533,
 136         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 137         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 138         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 139         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 140         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 141         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 142         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 143         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 144         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 145 };
 146
 147 fsl_ddr_cfg_regs_t ddr_cfg_regs_667 = {
 148         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
 149         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
 150         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 151         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_667,
 152         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_667,
 153         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_667,
 154         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_667,
 155         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 156         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 157         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_667,
 158         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_667,
 159         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 160         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_667,
 161         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 162         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_667,
 163         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 164         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 165         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 166         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 167         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 168         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 169         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 170         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 171         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 172 };
 173
 174 fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
 175         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
 176         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
 177         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 178         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_800,
 179         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_800,
 180         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_800,
 181         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_800,
 182         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 183         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 184         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_800,
 185         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_800,
 186         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 187         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_800,
 188         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 189         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_800,
 190         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 191         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 192         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 193         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 194         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 195         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 196         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 197         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 198         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 199 };
 200
 201 /*
 202  * Fixed sdram init -- doesn't use serial presence detect.
 203  */
 204
 205 phys_size_t fixed_sdram (void)
 206 {
 207         sys_info_t sysinfo;
 208         char buf[32];
 209         fsl_ddr_cfg_regs_t ddr_cfg_regs;
 210         size_t ddr_size;
 211         struct cpu_type *cpu;
 212
 213         get_sys_info(&sysinfo);
 214         printf("Configuring DDR for %s MT/s data rate\n",
 215                                 strmhz(buf, sysinfo.freqDDRBus));
 216
 217         if(sysinfo.freqDDRBus <= DATARATE_400MHZ)
 218                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_400, sizeof(ddr_cfg_regs));
 219         else if(sysinfo.freqDDRBus <= DATARATE_533MHZ)
 220                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_533, sizeof(ddr_cfg_regs));
 221         else if(sysinfo.freqDDRBus <= DATARATE_667MHZ)
 222                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_667, sizeof(ddr_cfg_regs));
 223         else if(sysinfo.freqDDRBus <= DATARATE_800MHZ)
 224                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_800, sizeof(ddr_cfg_regs));
 225         else
 226                 panic("Unsupported DDR data rate %s MT/s data rate\n",
 227                                         strmhz(buf, sysinfo.freqDDRBus));
 228
 229         cpu = gd->cpu;
 230         /* P1020 and it's derivatives support max 32bit DDR width */
 231         if(cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E ||
 232                 cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) {
 233                 ddr_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
 234                 ddr_cfg_regs.cs[0].bnds = 0x0000001F;
 235                 ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
 236         }
 237         else
 238                 ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 239
 240         fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
 241
 242         set_ddr_laws(0, ddr_size, LAW_TRGT_IF_DDR_1);
 243         return ddr_size;
 244 }