arch/arm/cpu/armv7/uniphier/ph1-ld4/umc_init.c

   1 /*
   2  * Copyright (C) 2011-2014 Panasonic Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/io.h>
   9 #include <asm/arch/umc-regs.h>
  10
  11 static inline void umc_start_ssif(void __iomem *ssif_base)
  12 {
  13         writel(0x00000000, ssif_base + 0x0000b004);
  14         writel(0xffffffff, ssif_base + 0x0000c004);
  15         writel(0x000fffcf, ssif_base + 0x0000c008);
  16         writel(0x00000001, ssif_base + 0x0000b000);
  17         writel(0x00000001, ssif_base + 0x0000c000);
  18         writel(0x03010101, ssif_base + UMC_MDMCHSEL);
  19         writel(0x03010100, ssif_base + UMC_DMDCHSEL);
  20
  21         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_FETCH);
  22         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE0);
  23         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC0);
  24         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC0);
  25         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMQUE1);
  26         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMWC1);
  27         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_COMRC1);
  28         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_WC);
  29         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_RC);
  30         writel(0x00000000, ssif_base + UMC_CLKEN_SSIF_DST);
  31
  32         writel(0x00000001, ssif_base + UMC_CPURST);
  33         writel(0x00000001, ssif_base + UMC_IDSRST);
  34         writel(0x00000001, ssif_base + UMC_IXMRST);
  35         writel(0x00000001, ssif_base + UMC_MDMRST);
  36         writel(0x00000001, ssif_base + UMC_MDDRST);
  37         writel(0x00000001, ssif_base + UMC_SIORST);
  38         writel(0x00000001, ssif_base + UMC_VIORST);
  39         writel(0x00000001, ssif_base + UMC_FRCRST);
  40         writel(0x00000001, ssif_base + UMC_RGLRST);
  41         writel(0x00000001, ssif_base + UMC_AIORST);
  42         writel(0x00000001, ssif_base + UMC_DMDRST);
  43 }
  44
  45 void umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
  46                        int size, int freq)
  47 {
  48         if (freq == 1333) {
  49                 writel(0x45990b11, dramcont + UMC_CMDCTLA);
  50                 writel(0x16958924, dramcont + UMC_CMDCTLB);
  51                 writel(0x5101046A, dramcont + UMC_INITCTLA);
  52
  53                 if (size == 1)
  54                         writel(0x27028B0A, dramcont + UMC_INITCTLB);
  55                 else if (size == 2)
  56                         writel(0x38028B0A, dramcont + UMC_INITCTLB);
  57
  58                 writel(0x000FF0FF, dramcont + UMC_INITCTLC);
  59                 writel(0x00000b51, dramcont + UMC_DRMMR0);
  60         } else if (freq == 1600) {
  61                 writel(0x36BB0F17, dramcont + UMC_CMDCTLA);
  62                 writel(0x18C6AA24, dramcont + UMC_CMDCTLB);
  63                 writel(0x5101387F, dramcont + UMC_INITCTLA);
  64
  65                 if (size == 1)
  66                         writel(0x2F030D3F, dramcont + UMC_INITCTLB);
  67                 else if (size == 2)
  68                         writel(0x43030D3F, dramcont + UMC_INITCTLB);
  69
  70                 writel(0x00FF00FF, dramcont + UMC_INITCTLC);
  71                 writel(0x00000d71, dramcont + UMC_DRMMR0);
  72         }
  73
  74         writel(0x00000006, dramcont + UMC_DRMMR1);
  75
  76         if (freq == 1333)
  77                 writel(0x00000290, dramcont + UMC_DRMMR2);
  78         else if (freq == 1600)
  79                 writel(0x00000298, dramcont + UMC_DRMMR2);
  80
  81         writel(0x00000800, dramcont + UMC_DRMMR3);
  82
  83         if (freq == 1333) {
  84                 if (size == 1)
  85                         writel(0x00240512, dramcont + UMC_SPCCTLA);
  86                 else if (size == 2)
  87                         writel(0x00350512, dramcont + UMC_SPCCTLA);
  88
  89                 writel(0x00ff0006, dramcont + UMC_SPCCTLB);
  90                 writel(0x000a00ac, dramcont + UMC_RDATACTL_D0);
  91         } else if (freq == 1600) {
  92                 if (size == 1)
  93                         writel(0x002B0617, dramcont + UMC_SPCCTLA);
  94                 else if (size == 2)
  95                         writel(0x003F0617, dramcont + UMC_SPCCTLA);
  96
  97                 writel(0x00ff0008, dramcont + UMC_SPCCTLB);
  98                 writel(0x000c00ae, dramcont + UMC_RDATACTL_D0);
  99         }
 100
 101         writel(0x04060806, dramcont + UMC_WDATACTL_D0);
 102         writel(0x04a02000, dramcont + UMC_DATASET);
 103         writel(0x00000000, ca_base + 0x2300);
 104         writel(0x00400020, dramcont + UMC_DCCGCTL);
 105         writel(0x00000003, dramcont + 0x7000);
 106         writel(0x0000000f, dramcont + 0x8000);
 107         writel(0x000000c3, dramcont + 0x8004);
 108         writel(0x00000071, dramcont + 0x8008);
 109         writel(0x0000003b, dramcont + UMC_DICGCTLA);
 110         writel(0x020a0808, dramcont + UMC_DICGCTLB);
 111         writel(0x00000004, dramcont + UMC_FLOWCTLG);
 112         writel(0x80000201, ca_base + 0xc20);
 113         writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
 114         writel(0x00200000, dramcont + UMC_FLOWCTLB);
 115         writel(0x00004444, dramcont + UMC_FLOWCTLC);
 116         writel(0x200a0a00, dramcont + UMC_SPCSETB);
 117         writel(0x00000000, dramcont + UMC_SPCSETD);
 118         writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
 119 }
 120
 121 static inline int umc_init_sub(int freq, int size_ch0, int size_ch1)
 122 {
 123         void __iomem *ssif_base = (void __iomem *)UMC_SSIF_BASE;
 124         void __iomem *ca_base0 = (void __iomem *)UMC_CA_BASE(0);
 125         void __iomem *ca_base1 = (void __iomem *)UMC_CA_BASE(1);
 126         void __iomem *dramcont0 = (void __iomem *)UMC_DRAMCONT_BASE(0);
 127         void __iomem *dramcont1 = (void __iomem *)UMC_DRAMCONT_BASE(1);
 128
 129         umc_dram_init_start(dramcont0);
 130         umc_dram_init_start(dramcont1);
 131         umc_dram_init_poll(dramcont0);
 132         umc_dram_init_poll(dramcont1);
 133
 134         writel(0x00000101, dramcont0 + UMC_DIOCTLA);
 135
 136         writel(0x00000101, dramcont1 + UMC_DIOCTLA);
 137
 138         umc_dramcont_init(dramcont0, ca_base0, size_ch0, freq);
 139         umc_dramcont_init(dramcont1, ca_base1, size_ch1, freq);
 140
 141         umc_start_ssif(ssif_base);
 142
 143         return 0;
 144 }
 145
 146 int umc_init(void)
 147 {
 148         return umc_init_sub(CONFIG_DDR_FREQ, CONFIG_SDRAM0_SIZE / 0x08000000,
 149                                         CONFIG_SDRAM1_SIZE / 0x08000000);
 150 }
 151
 152 #if CONFIG_DDR_FREQ != 1333 && CONFIG_DDR_FREQ != 1600
 153 #error Unsupported DDR Frequency.
 154 #endif
 155
 156 #if (CONFIG_SDRAM0_SIZE == 0x08000000 || CONFIG_SDRAM0_SIZE == 0x10000000) && \
 157     (CONFIG_SDRAM1_SIZE == 0x08000000 || CONFIG_SDRAM1_SIZE == 0x10000000) && \
 158     CONFIG_DDR_NUM_CH0 == 1 && CONFIG_DDR_NUM_CH1 == 1
 159 /* OK */
 160 #else
 161 #error Unsupported DDR configuration.
 162 #endif