board/freescale/m547xevb/m547xevb.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2003
   4  * Wolfgang Denk, DENX Software Engineering, [email protected].
   5  *
   6  * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
   7  * TsiChung Liew ([email protected])
   8  */
   9
  10 #include <config.h>
  11 #include <common.h>
  12 #include <init.h>
  13 #include <pci.h>
  14 #include <asm/immap.h>
  15 #include <asm/io.h>
  16 #include <linux/delay.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 int checkboard(void)
  21 {
  22         puts("Board: ");
  23         puts("Freescale FireEngine 5475 EVB\n");
  24         return 0;
  25 };
  26
  27 int dram_init(void)
  28 {
  29         siu_t *siu = (siu_t *) (MMAP_SIU);
  30         sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
  31         u32 dramsize, i;
  32 #ifdef CONFIG_SYS_DRAMSZ1
  33         u32 temp;
  34 #endif
  35
  36         out_be32(&siu->drv, CONFIG_SYS_SDRAM_DRVSTRENGTH);
  37
  38         dramsize = CONFIG_SYS_DRAMSZ * 0x100000;
  39         for (i = 0x13; i < 0x20; i++) {
  40                 if (dramsize == (1 << i))
  41                         break;
  42         }
  43         i--;
  44         out_be32(&siu->cs0cfg, CONFIG_SYS_SDRAM_BASE | i);
  45
  46 #ifdef CONFIG_SYS_DRAMSZ1
  47         temp = CONFIG_SYS_DRAMSZ1 * 0x100000;
  48         for (i = 0x13; i < 0x20; i++) {
  49                 if (temp == (1 << i))
  50                         break;
  51         }
  52         i--;
  53         dramsize += temp;
  54         out_be32(&siu->cs1cfg, (CONFIG_SYS_SDRAM_BASE + temp) | i);
  55 #endif
  56
  57         out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
  58         out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
  59
  60         /* Issue PALL */
  61         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  62
  63         /* Issue LEMR */
  64         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
  65         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE | 0x04000000);
  66
  67         udelay(500);
  68
  69         /* Issue PALL */
  70         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  71
  72         /* Perform two refresh cycles */
  73         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  74         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  75
  76         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
  77
  78         out_be32(&sdram->ctrl,
  79                 (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00);
  80
  81         udelay(100);
  82
  83         gd->ram_size = dramsize;
  84
  85         return 0;
  86 };
  87
  88 int testdram(void)
  89 {
  90         /* TODO: XXX XXX XXX */
  91         printf("DRAM test not implemented!\n");
  92
  93         return (0);
  94 }
  95
  96 #if defined(CONFIG_PCI)
  97 /*
  98  * Initialize PCI devices, report devices found.
  99  */
 100 static struct pci_controller hose;
 101 extern void pci_mcf547x_8x_init(struct pci_controller *hose);
 102
 103 void pci_init_board(void)
 104 {
 105         pci_mcf547x_8x_init(&hose);
 106 }
 107 #endif                          /* CONFIG_PCI */