board/sbc8641d/sbc8641d.c

   1 /*
   2  * Copyright 2007 Wind River Systemes, Inc. <www.windriver.com>
   3  * Copyright 2007 Embedded Specialties, Inc.
   4  * Joe Hamman joe.hamman@embeddedspecialties.com
   5  *
   6  * Copyright 2004 Freescale Semiconductor.
   7  * Jeff Brown
   8  * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
   9  *
  10  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
  11  *
  12  * SPDX-License-Identifier:     GPL-2.0+
  13  */
  14
  15 #include <common.h>
  16 #include <command.h>
  17 #include <pci.h>
  18 #include <asm/processor.h>
  19 #include <asm/immap_86xx.h>
  20 #include <asm/fsl_pci.h>
  21 #include <asm/fsl_ddr_sdram.h>
  22 #include <asm/fsl_serdes.h>
  23 #include <libfdt.h>
  24 #include <fdt_support.h>
  25
  26 long int fixed_sdram (void);
  27
  28 int board_early_init_f (void)
  29 {
  30         return 0;
  31 }
  32
  33 int checkboard (void)
  34 {
  35         puts ("Board: Wind River SBC8641D\n");
  36
  37         return 0;
  38 }
  39
  40 phys_size_t initdram (int board_type)
  41 {
  42         long dram_size = 0;
  43
  44 #if defined(CONFIG_SPD_EEPROM)
  45         dram_size = fsl_ddr_sdram();
  46 #else
  47         dram_size = fixed_sdram ();
  48 #endif
  49
  50         debug ("    DDR: ");
  51         return dram_size;
  52 }
  53
  54 #if defined(CONFIG_SYS_DRAM_TEST)
  55 int testdram (void)
  56 {
  57         uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
  58         uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
  59         uint *p;
  60
  61         puts ("SDRAM test phase 1:\n");
  62         for (p = pstart; p < pend; p++)
  63                 *p = 0xaaaaaaaa;
  64
  65         for (p = pstart; p < pend; p++) {
  66                 if (*p != 0xaaaaaaaa) {
  67                         printf ("SDRAM test fails at: %08x\n", (uint) p);
  68                         return 1;
  69                 }
  70         }
  71
  72         puts ("SDRAM test phase 2:\n");
  73         for (p = pstart; p < pend; p++)
  74                 *p = 0x55555555;
  75
  76         for (p = pstart; p < pend; p++) {
  77                 if (*p != 0x55555555) {
  78                         printf ("SDRAM test fails at: %08x\n", (uint) p);
  79                         return 1;
  80                 }
  81         }
  82
  83         puts ("SDRAM test passed.\n");
  84         return 0;
  85 }
  86 #endif
  87
  88 #if !defined(CONFIG_SPD_EEPROM)
  89 /*
  90  * Fixed sdram init -- doesn't use serial presence detect.
  91  */
  92 long int fixed_sdram (void)
  93 {
  94 #if !defined(CONFIG_SYS_RAMBOOT)
  95         volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
  96         volatile ccsr_ddr_t *ddr = &immap->im_ddr1;
  97
  98         ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
  99         ddr->cs1_bnds = CONFIG_SYS_DDR_CS1_BNDS;
 100         ddr->cs2_bnds = CONFIG_SYS_DDR_CS2_BNDS;
 101         ddr->cs3_bnds = CONFIG_SYS_DDR_CS3_BNDS;
 102         ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
 103         ddr->cs1_config = CONFIG_SYS_DDR_CS1_CONFIG;
 104         ddr->cs2_config = CONFIG_SYS_DDR_CS2_CONFIG;
 105         ddr->cs3_config = CONFIG_SYS_DDR_CS3_CONFIG;
 106         ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
 107         ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
 108         ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 109         ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
 110         ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1A;
 111         ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CFG_2;
 112         ddr->sdram_mode = CONFIG_SYS_DDR_MODE_1;
 113         ddr->sdram_mode_2 = CONFIG_SYS_DDR_MODE_2;
 114         ddr->sdram_mode_cntl = CONFIG_SYS_DDR_MODE_CTL;
 115         ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 116         ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
 117         ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
 118
 119         asm ("sync;isync");
 120
 121         udelay (500);
 122
 123         ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1B;
 124         asm ("sync; isync");
 125
 126         udelay (500);
 127         ddr = &immap->im_ddr2;
 128
 129         ddr->cs0_bnds = CONFIG_SYS_DDR2_CS0_BNDS;
 130         ddr->cs1_bnds = CONFIG_SYS_DDR2_CS1_BNDS;
 131         ddr->cs2_bnds = CONFIG_SYS_DDR2_CS2_BNDS;
 132         ddr->cs3_bnds = CONFIG_SYS_DDR2_CS3_BNDS;
 133         ddr->cs0_config = CONFIG_SYS_DDR2_CS0_CONFIG;
 134         ddr->cs1_config = CONFIG_SYS_DDR2_CS1_CONFIG;
 135         ddr->cs2_config = CONFIG_SYS_DDR2_CS2_CONFIG;
 136         ddr->cs3_config = CONFIG_SYS_DDR2_CS3_CONFIG;
 137         ddr->timing_cfg_3 = CONFIG_SYS_DDR2_EXT_REFRESH;
 138         ddr->timing_cfg_0 = CONFIG_SYS_DDR2_TIMING_0;
 139         ddr->timing_cfg_1 = CONFIG_SYS_DDR2_TIMING_1;
 140         ddr->timing_cfg_2 = CONFIG_SYS_DDR2_TIMING_2;
 141         ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1A;
 142         ddr->sdram_cfg_2 = CONFIG_SYS_DDR2_CFG_2;
 143         ddr->sdram_mode = CONFIG_SYS_DDR2_MODE_1;
 144         ddr->sdram_mode_2 = CONFIG_SYS_DDR2_MODE_2;
 145         ddr->sdram_mode_cntl = CONFIG_SYS_DDR2_MODE_CTL;
 146         ddr->sdram_interval = CONFIG_SYS_DDR2_INTERVAL;
 147         ddr->sdram_data_init = CONFIG_SYS_DDR2_DATA_INIT;
 148         ddr->sdram_clk_cntl = CONFIG_SYS_DDR2_CLK_CTRL;
 149
 150         asm ("sync;isync");
 151
 152         udelay (500);
 153
 154         ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1B;
 155         asm ("sync; isync");
 156
 157         udelay (500);
 158 #endif
 159         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 160 }
 161 #endif                          /* !defined(CONFIG_SPD_EEPROM) */
 162
 163 #if defined(CONFIG_PCI)
 164 /*
 165  * Initialize PCI Devices, report devices found.
 166  */
 167
 168 void pci_init_board(void)
 169 {
 170         fsl_pcie_init_board(0);
 171 }
 172 #endif /* CONFIG_PCI */
 173
 174
 175 #if defined(CONFIG_OF_BOARD_SETUP)
 176 void ft_board_setup (void *blob, bd_t *bd)
 177 {
 178         ft_cpu_setup(blob, bd);
 179
 180         FT_FSL_PCI_SETUP;
 181 }
 182 #endif
 183
 184 void sbc8641d_reset_board (void)
 185 {
 186         puts ("Resetting board....\n");
 187 }
 188
 189 /*
 190  * get_board_sys_clk
 191  *      Clock is fixed at 1GHz on this board. Used for CONFIG_SYS_CLK_FREQ
 192  */
 193
 194 unsigned long get_board_sys_clk (ulong dummy)
 195 {
 196         int i;
 197         ulong val = 0;
 198
 199         i = 5;
 200         i &= 0x07;
 201
 202         switch (i) {
 203         case 0:
 204                 val = 33000000;
 205                 break;
 206         case 1:
 207                 val = 40000000;
 208                 break;
 209         case 2:
 210                 val = 50000000;
 211                 break;
 212         case 3:
 213                 val = 66000000;
 214                 break;
 215         case 4:
 216                 val = 83000000;
 217                 break;
 218         case 5:
 219                 val = 100000000;
 220                 break;
 221         case 6:
 222                 val = 134000000;
 223                 break;
 224         case 7:
 225                 val = 166000000;
 226                 break;
 227         }
 228
 229         return val;
 230 }
 231
 232 void board_reset(void)
 233 {
 234 #ifdef CONFIG_SYS_RESET_ADDRESS
 235         ulong addr = CONFIG_SYS_RESET_ADDRESS;
 236
 237         /* flush and disable I/D cache */
 238         __asm__ __volatile__ ("mfspr    3, 1008"        ::: "r3");
 239         __asm__ __volatile__ ("ori      5, 5, 0xcc00"   ::: "r5");
 240         __asm__ __volatile__ ("ori      4, 3, 0xc00"    ::: "r4");
 241         __asm__ __volatile__ ("andc     5, 3, 5"        ::: "r5");
 242         __asm__ __volatile__ ("sync");
 243         __asm__ __volatile__ ("mtspr    1008, 4");
 244         __asm__ __volatile__ ("isync");
 245         __asm__ __volatile__ ("sync");
 246         __asm__ __volatile__ ("mtspr    1008, 5");
 247         __asm__ __volatile__ ("isync");
 248         __asm__ __volatile__ ("sync");
 249
 250         /*
 251          * SRR0 has system reset vector, SRR1 has default MSR value
 252          * rfi restores MSR from SRR1 and sets the PC to the SRR0 value
 253          */
 254         __asm__ __volatile__ ("mtspr    26, %0"         :: "r" (addr));
 255         __asm__ __volatile__ ("li       4, (1 << 6)"    ::: "r4");
 256         __asm__ __volatile__ ("mtspr    27, 4");
 257         __asm__ __volatile__ ("rfi");
 258 #endif
 259 }