board/freescale/p1_p2_rdb/ddr.c

   1 /*
   2  * Copyright 2009, 2011 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/mmu.h>
   9 #include <asm/immap_85xx.h>
  10 #include <asm/processor.h>
  11 #include <asm/fsl_ddr_sdram.h>
  12 #include <asm/io.h>
  13 #include <asm/fsl_law.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 #define CONFIG_SYS_DDR_CS0_BNDS         0x0000003F
  18 #define CONFIG_SYS_DDR_CS0_CONFIG       0x80014202
  19 #define CONFIG_SYS_DDR_CS0_CONFIG_2     0x00000000
  20 #define CONFIG_SYS_DDR_INIT_ADDR        0x00000000
  21 #define CONFIG_SYS_DDR_INIT_EXT_ADDR    0x00000000
  22 #define CONFIG_SYS_DDR_MODE_CONTROL     0x00000000
  23 #define CONFIG_SYS_DDR_ZQ_CONTROL       0x00000000
  24 #define CONFIG_SYS_DDR_WRLVL_CONTROL    0x00000000
  25 #define CONFIG_SYS_DDR_SR_CNTR          0x00000000
  26 #define CONFIG_SYS_DDR_RCW_1            0x00000000
  27 #define CONFIG_SYS_DDR_RCW_2            0x00000000
  28 #define CONFIG_SYS_DDR_CONTROL          0x43000000      /* Type = DDR2*/
  29 #define CONFIG_SYS_DDR_CONTROL_2        0x24401000
  30 #define CONFIG_SYS_DDR_TIMING_4         0x00000000
  31 #define CONFIG_SYS_DDR_TIMING_5         0x00000000
  32
  33 #define CONFIG_SYS_DDR_TIMING_3_400     0x00010000
  34 #define CONFIG_SYS_DDR_TIMING_0_400     0x00260802
  35 #define CONFIG_SYS_DDR_TIMING_1_400     0x39355322
  36 #define CONFIG_SYS_DDR_TIMING_2_400     0x1f9048ca
  37 #define CONFIG_SYS_DDR_CLK_CTRL_400     0x02800000
  38 #define CONFIG_SYS_DDR_MODE_1_400       0x00480432
  39 #define CONFIG_SYS_DDR_MODE_2_400       0x00000000
  40 #define CONFIG_SYS_DDR_INTERVAL_400     0x06180100
  41
  42 #define CONFIG_SYS_DDR_TIMING_3_533     0x00020000
  43 #define CONFIG_SYS_DDR_TIMING_0_533     0x00260802
  44 #define CONFIG_SYS_DDR_TIMING_1_533     0x4c47c432
  45 #define CONFIG_SYS_DDR_TIMING_2_533     0x0f9848ce
  46 #define CONFIG_SYS_DDR_CLK_CTRL_533     0x02800000
  47 #define CONFIG_SYS_DDR_MODE_1_533       0x00040642
  48 #define CONFIG_SYS_DDR_MODE_2_533       0x00000000
  49 #define CONFIG_SYS_DDR_INTERVAL_533     0x08200100
  50
  51 #define CONFIG_SYS_DDR_TIMING_3_667     0x00030000
  52 #define CONFIG_SYS_DDR_TIMING_0_667     0x55770802
  53 #define CONFIG_SYS_DDR_TIMING_1_667     0x5f599543
  54 #define CONFIG_SYS_DDR_TIMING_2_667     0x0fa074d1
  55 #define CONFIG_SYS_DDR_CLK_CTRL_667     0x03000000
  56 #define CONFIG_SYS_DDR_MODE_1_667       0x00040852
  57 #define CONFIG_SYS_DDR_MODE_2_667       0x00000000
  58 #define CONFIG_SYS_DDR_INTERVAL_667     0x0a280100
  59
  60 #define CONFIG_SYS_DDR_TIMING_3_800     0x00040000
  61 #define CONFIG_SYS_DDR_TIMING_0_800     0x00770802
  62 #define CONFIG_SYS_DDR_TIMING_1_800     0x6f6b6543
  63 #define CONFIG_SYS_DDR_TIMING_2_800     0x0fa074d1
  64 #define CONFIG_SYS_DDR_CLK_CTRL_800     0x02800000
  65 #define CONFIG_SYS_DDR_MODE_1_800       0x00040852
  66 #define CONFIG_SYS_DDR_MODE_2_800       0x00000000
  67 #define CONFIG_SYS_DDR_INTERVAL_800     0x0c300100
  68
  69 fsl_ddr_cfg_regs_t ddr_cfg_regs_400 = {
  70         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
  71         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
  72         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
  73         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_400,
  74         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_400,
  75         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_400,
  76         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_400,
  77         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
  78         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
  79         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_400,
  80         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_400,
  81         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
  82         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_400,
  83         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
  84         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_400,
  85         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
  86         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
  87         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
  88         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
  89         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
  90         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
  91         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
  92         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
  93         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
  94 };
  95
  96 fsl_ddr_cfg_regs_t ddr_cfg_regs_533 = {
  97         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
  98         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
  99         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 100         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_533,
 101         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_533,
 102         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_533,
 103         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_533,
 104         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 105         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 106         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_533,
 107         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_533,
 108         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 109         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_533,
 110         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 111         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_533,
 112         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 113         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 114         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 115         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 116         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 117         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 118         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 119         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 120         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 121 };
 122
 123 fsl_ddr_cfg_regs_t ddr_cfg_regs_667 = {
 124         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
 125         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
 126         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 127         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_667,
 128         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_667,
 129         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_667,
 130         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_667,
 131         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 132         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 133         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_667,
 134         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_667,
 135         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 136         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_667,
 137         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 138         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_667,
 139         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 140         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 141         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 142         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 143         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 144         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 145         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 146         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 147         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 148 };
 149
 150 fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
 151         .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
 152         .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
 153         .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
 154         .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_800,
 155         .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_800,
 156         .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_800,
 157         .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_800,
 158         .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
 159         .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
 160         .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_800,
 161         .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_800,
 162         .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 163         .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_800,
 164         .ddr_data_init = CONFIG_MEM_INIT_VALUE,
 165         .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_800,
 166         .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 167         .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
 168         .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
 169         .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 170         .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 171         .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
 172         .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 173         .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 174         .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
 175 };
 176
 177 /*
 178  * Fixed sdram init -- doesn't use serial presence detect.
 179  */
 180
 181 phys_size_t fixed_sdram (void)
 182 {
 183         char buf[32];
 184         fsl_ddr_cfg_regs_t ddr_cfg_regs;
 185         size_t ddr_size;
 186         struct cpu_type *cpu;
 187         ulong ddr_freq, ddr_freq_mhz;
 188
 189         cpu = gd->arch.cpu;
 190         /* P1020 and it's derivatives support max 32bit DDR width */
 191         if (cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1011) {
 192                 ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
 193         } else {
 194                 ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 195         }
 196 #if defined(CONFIG_SYS_RAMBOOT)
 197         return ddr_size;
 198 #endif
 199         ddr_freq = get_ddr_freq(0);
 200         ddr_freq_mhz = ddr_freq / 1000000;
 201
 202         printf("Configuring DDR for %s MT/s data rate\n",
 203                                 strmhz(buf, ddr_freq));
 204
 205         if(ddr_freq_mhz <= 400)
 206                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_400, sizeof(ddr_cfg_regs));
 207         else if(ddr_freq_mhz <= 533)
 208                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_533, sizeof(ddr_cfg_regs));
 209         else if(ddr_freq_mhz <= 667)
 210                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_667, sizeof(ddr_cfg_regs));
 211         else if(ddr_freq_mhz <= 800)
 212                 memcpy(&ddr_cfg_regs, &ddr_cfg_regs_800, sizeof(ddr_cfg_regs));
 213         else
 214                 panic("Unsupported DDR data rate %s MT/s data rate\n",
 215                                         strmhz(buf, ddr_freq));
 216
 217         /* P1020 and it's derivatives support max 32bit DDR width */
 218         if (cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1011) {
 219                 ddr_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
 220                 ddr_cfg_regs.cs[0].bnds = 0x0000001F;
 221         }
 222
 223         fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
 224
 225         set_ddr_laws(0, ddr_size, LAW_TRGT_IF_DDR_1);
 226         return ddr_size;
 227 }