git.sur5r.net Git - u-boot/blob - board/freescale/m5208evbe/m5208evbe.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2003
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc.
   7  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   8  */
   9
  10 #include <config.h>
  11 #include <common.h>
  12 #include <asm/immap.h>
  13 #include <asm/io.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int checkboard(void)
  18 {
  19         puts("Board: ");
  20         puts("Freescale M5208EVBe\n");
  21         return 0;
  22 };
  23
  24 int dram_init(void)
  25 {
  26         sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
  27         u32 dramsize, i;
  28
  29         dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
  30
  31         for (i = 0x13; i < 0x20; i++) {
  32                 if (dramsize == (1 << i))
  33                         break;
  34         }
  35         i--;
  36
  37         out_be32(&sdram->cs0, CONFIG_SYS_SDRAM_BASE | i);
  38 #ifdef CONFIG_SYS_SDRAM_BASE1
  39         out_be32(&sdram->cs1, CONFIG_SYS_SDRAM_BASE | i);
  40 #endif
  41         out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
  42         out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
  43
  44         udelay(500);
  45
  46         /* Issue PALL */
  47         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  48         asm("nop");
  49
  50         /* Perform two refresh cycles */
  51         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  52         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  53         asm("nop");
  54
  55         /* Issue LEMR */
  56         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
  57         asm("nop");
  58         out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
  59         asm("nop");
  60
  61         out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  62         asm("nop");
  63
  64         out_be32(&sdram->ctrl,
  65                 (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00);
  66         asm("nop");
  67
  68         udelay(100);
  69
  70         gd->ram_size = dramsize;
  71
  72         return 0;
  73 };
  74
  75 int testdram(void)
  76 {
  77         /* TODO: XXX XXX XXX */
  78         printf("DRAM test not implemented!\n");
  79
  80         return (0);
  81 }