board/freescale/m547xevb/m547xevb.c

   1 /*
   2  * (C) Copyright 2000-2003
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   6  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <config.h>
  28 #include <common.h>
  29 #include <pci.h>
  30 #include <asm/immap.h>
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 int checkboard(void)
  35 {
  36         puts("Board: ");
  37         puts("Freescale FireEngine 5475 EVB\n");
  38         return 0;
  39 };
  40
  41 long int initdram(int board_type)
  42 {
  43         volatile siu_t *siu = (siu_t *) (MMAP_SIU);
  44         volatile sdram_t *sdram = (volatile sdram_t *)(MMAP_SDRAM);
  45         u32 dramsize, i;
  46 #ifdef CFG_DRAMSZ1
  47         u32 temp;
  48 #endif
  49
  50         siu->drv = CFG_SDRAM_DRVSTRENGTH;
  51
  52         dramsize = CFG_DRAMSZ * 0x100000;
  53         for (i = 0x13; i < 0x20; i++) {
  54                 if (dramsize == (1 << i))
  55                         break;
  56         }
  57         i--;
  58         siu->cs0cfg = (CFG_SDRAM_BASE | i);
  59
  60 #ifdef CFG_DRAMSZ1
  61         temp = CFG_DRAMSZ1 * 0x100000;
  62         for (i = 0x13; i < 0x20; i++) {
  63                 if (temp == (1 << i))
  64                         break;
  65         }
  66         i--;
  67         dramsize += temp;
  68         siu->cs1cfg = ((CFG_SDRAM_BASE + temp) | i);
  69 #endif
  70
  71         sdram->cfg1 = CFG_SDRAM_CFG1;
  72         sdram->cfg2 = CFG_SDRAM_CFG2;
  73
  74         /* Issue PALL */
  75         sdram->ctrl = CFG_SDRAM_CTRL | 2;
  76
  77         /* Issue LEMR */
  78         sdram->mode = CFG_SDRAM_EMOD;
  79         sdram->mode = (CFG_SDRAM_MODE | 0x04000000);
  80
  81         udelay(500);
  82
  83         /* Issue PALL */
  84         sdram->ctrl = (CFG_SDRAM_CTRL | 2);
  85
  86         /* Perform two refresh cycles */
  87         sdram->ctrl = CFG_SDRAM_CTRL | 4;
  88         sdram->ctrl = CFG_SDRAM_CTRL | 4;
  89
  90         sdram->mode = CFG_SDRAM_MODE;
  91
  92         sdram->ctrl = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000F00;
  93
  94         udelay(100);
  95
  96         return dramsize;
  97 };
  98
  99 int testdram(void)
 100 {
 101         /* TODO: XXX XXX XXX */
 102         printf("DRAM test not implemented!\n");
 103
 104         return (0);
 105 }
 106
 107 #if defined(CONFIG_PCI)
 108 /*
 109  * Initialize PCI devices, report devices found.
 110  */
 111 static struct pci_controller hose;
 112 extern void pci_mcf547x_8x_init(struct pci_controller *hose);
 113
 114 void pci_init_board(void)
 115 {
 116         pci_mcf547x_8x_init(&hose);
 117 }
 118 #endif                          /* CONFIG_PCI */