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
checkboard(void)17 int checkboard(void)
18 {
19 puts("Board: ");
20 puts("Freescale M5208EVBe\n");
21 return 0;
22 };
23
dram_init(void)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
testdram(void)75 int testdram(void)
76 {
77 /* TODO: XXX XXX XXX */
78 printf("DRAM test not implemented!\n");
79
80 return (0);
81 }
82