board/freescale/m548xevb/m548xevb.c

   1 /*
   2  * (C) Copyright 2000-2003
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
   6  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <config.h>
  12 #include <common.h>
  13 #include <pci.h>
  14 #include <asm/immap.h>
  15 #include <asm/io.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 int checkboard(void)
  20 {
  21         puts("Board: ");
  22         puts("Freescale FireEngine 5485 EVB\n");
  23         return 0;
  24 };
  25
  26 int initdram(void)
  27 {
  28         siu_t *siu = (siu_t *) (MMAP_SIU);
  29         sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
  30         u32 dramsize, i;
  31 #ifdef CONFIG_SYS_DRAMSZ1
  32         u32 temp;
  33 #endif
  34
  35         out_be32(&siu->drv, CONFIG_SYS_SDRAM_DRVSTRENGTH);
  36
  37         dramsize = CONFIG_SYS_DRAMSZ * 0x100000;
  38         for (i = 0x13; i < 0x20; i++) {
  39                 if (dramsize == (1 << i))
  40                         break;
  41         }
  42         i--;
  43         out_be32(&siu->cs0cfg, CONFIG_SYS_SDRAM_BASE | i);
  44
  45 #ifdef CONFIG_SYS_DRAMSZ1
  46         temp = CONFIG_SYS_DRAMSZ1 * 0x100000;
  47         for (i = 0x13; i < 0x20; i++) {
  48                 if (temp == (1 << i))
  49                         break;
  50         }
  51         i--;
  52         dramsize += temp;
  53         out_be32(&siu->cs1cfg, (CONFIG_SYS_SDRAM_BASE + temp) | i);
  54 #endif
  55
  56         out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
  57         out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
  58
  59         /* Issue PALL */
  60         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  61
  62         /* Issue LEMR */
  63         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
  64         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE | 0x04000000);
  65
  66         udelay(500);
  67
  68         /* Issue PALL */
  69         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  70
  71         /* Perform two refresh cycles */
  72         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  73         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  74
  75         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
  76
  77         out_be32(&sdram->ctrl,
  78                 (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00);
  79
  80         udelay(100);
  81
  82         gd->ram_size = dramsize;
  83
  84         return 0;
  85 };
  86
  87 int testdram(void)
  88 {
  89         /* TODO: XXX XXX XXX */
  90         printf("DRAM test not implemented!\n");
  91
  92         return (0);
  93 }
  94
  95 #if defined(CONFIG_PCI)
  96 /*
  97  * Initialize PCI devices, report devices found.
  98  */
  99 static struct pci_controller hose;
 100 extern void pci_mcf547x_8x_init(struct pci_controller *hose);
 101
 102 void pci_init_board(void)
 103 {
 104         pci_mcf547x_8x_init(&hose);
 105 }
 106 #endif                          /* CONFIG_PCI */