blob: f331786bf7d56b843963392ab0526dc11a3c05d3 [file] [log] [blame]
TsiChung Liew536e7da2008-10-22 11:38:21 +00001/*
2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Copyright (C) 2004-2008 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 <asm/immap.h>
30
31DECLARE_GLOBAL_DATA_PTR;
32
33int checkboard(void)
34{
35 puts("Board: ");
36 puts("Freescale M53017EVB\n");
37 return 0;
38};
39
40phys_size_t initdram(int board_type)
41{
42 volatile sdram_t *sdram = (volatile sdram_t *)(MMAP_SDRAM);
43 u32 dramsize, i;
44
45 dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
46
47 for (i = 0x13; i < 0x20; i++) {
48 if (dramsize == (1 << i))
49 break;
50 }
51 i--;
52
53 sdram->cs0 = (CONFIG_SYS_SDRAM_BASE | i);
54#ifdef CONFIG_SYS_SDRAM_BASE1
55 sdram->cs1 = (CONFIG_SYS_SDRAM_BASE | i);
56#endif
57 sdram->cfg1 = CONFIG_SYS_SDRAM_CFG1;
58 sdram->cfg2 = CONFIG_SYS_SDRAM_CFG2;
59
60 udelay(500);
61
62 /* Issue PALL */
63 sdram->ctrl = (CONFIG_SYS_SDRAM_CTRL | 2);
64 asm("nop");
65
66 /* Perform two refresh cycles */
67 sdram->ctrl = CONFIG_SYS_SDRAM_CTRL | 4;
68 sdram->ctrl = CONFIG_SYS_SDRAM_CTRL | 4;
69 asm("nop");
70
71 /* Issue LEMR */
72 sdram->mode = CONFIG_SYS_SDRAM_MODE;
73 asm("nop");
74 sdram->mode = CONFIG_SYS_SDRAM_EMOD;
75 asm("nop");
76
77 sdram->ctrl = (CONFIG_SYS_SDRAM_CTRL | 2);
78 asm("nop");
79
80 sdram->ctrl = (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00;
81 asm("nop");
82
83 udelay(100);
84
85 return dramsize;
86};
87
88int testdram(void)
89{
90 /* TODO: XXX XXX XXX */
91 printf("DRAM test not implemented!\n");
92
93 return (0);
94}