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) 2004-2007, 2012 Freescale Semiconductor, Inc.
7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 */
9
10 #include <config.h>
11 #include <common.h>
12 #include <init.h>
13 #include <asm/global_data.h>
14 #include <asm/immap.h>
15 #include <asm/io.h>
16 #include <linux/delay.h>
17
18 DECLARE_GLOBAL_DATA_PTR;
19
checkboard(void)20 int checkboard(void)
21 {
22 puts("Board: ");
23 puts("Freescale FireEngine 5373 EVB\n");
24 return 0;
25 };
26
dram_init(void)27 int dram_init(void)
28 {
29 sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
30 u32 dramsize, i;
31
32 dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
33
34 for (i = 0x13; i < 0x20; i++) {
35 if (dramsize == (1 << i))
36 break;
37 }
38 i--;
39
40 out_be32(&sdram->cs0, CONFIG_SYS_SDRAM_BASE | i);
41 out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
42 out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
43
44 /* Issue PALL */
45 out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
46
47 /* Issue LEMR */
48 out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
49 out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE | 0x04000000);
50
51 udelay(500);
52
53 /* Issue PALL */
54 out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
55
56 /* Perform two refresh cycles */
57 out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
58 out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
59
60 out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
61
62 out_be32(&sdram->ctrl,
63 (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00);
64
65 udelay(100);
66
67 gd->ram_size = dramsize;
68
69 return 0;
70 };
71
testdram(void)72 int testdram(void)
73 {
74 /* TODO: XXX XXX XXX */
75 printf("DRAM test not implemented!\n");
76
77 return (0);
78 }
79