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536e7dac TL |
1 | /* |
2 | * (C) Copyright 2000-2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
aa0d99fc | 5 | * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc. |
536e7dac TL |
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> | |
aa0d99fc | 30 | #include <asm/io.h> |
536e7dac TL |
31 | |
32 | DECLARE_GLOBAL_DATA_PTR; | |
33 | ||
34 | int checkboard(void) | |
35 | { | |
36 | puts("Board: "); | |
37 | puts("Freescale M53017EVB\n"); | |
38 | return 0; | |
39 | }; | |
40 | ||
41 | phys_size_t initdram(int board_type) | |
42 | { | |
aa0d99fc | 43 | sdram_t *sdram = (sdram_t *)(MMAP_SDRAM); |
536e7dac TL |
44 | u32 dramsize, i; |
45 | ||
46 | dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000; | |
47 | ||
48 | for (i = 0x13; i < 0x20; i++) { | |
49 | if (dramsize == (1 << i)) | |
50 | break; | |
51 | } | |
52 | i--; | |
53 | ||
aa0d99fc | 54 | out_be32(&sdram->cs0, CONFIG_SYS_SDRAM_BASE | i); |
536e7dac | 55 | #ifdef CONFIG_SYS_SDRAM_BASE1 |
aa0d99fc | 56 | out_be32(&sdram->cs1, CONFIG_SYS_SDRAM_BASE | i); |
536e7dac | 57 | #endif |
aa0d99fc AW |
58 | out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1); |
59 | out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2); | |
536e7dac TL |
60 | |
61 | udelay(500); | |
62 | ||
63 | /* Issue PALL */ | |
aa0d99fc | 64 | out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2); |
536e7dac TL |
65 | asm("nop"); |
66 | ||
67 | /* Perform two refresh cycles */ | |
aa0d99fc AW |
68 | out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4); |
69 | out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4); | |
536e7dac TL |
70 | asm("nop"); |
71 | ||
72 | /* Issue LEMR */ | |
aa0d99fc | 73 | out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE); |
536e7dac | 74 | asm("nop"); |
aa0d99fc | 75 | out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD); |
536e7dac TL |
76 | asm("nop"); |
77 | ||
aa0d99fc | 78 | out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2); |
536e7dac TL |
79 | asm("nop"); |
80 | ||
aa0d99fc AW |
81 | out_be32(&sdram->ctrl, |
82 | (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00); | |
536e7dac TL |
83 | asm("nop"); |
84 | ||
85 | udelay(100); | |
86 | ||
87 | return dramsize; | |
88 | }; | |
89 | ||
90 | int testdram(void) | |
91 | { | |
92 | /* TODO: XXX XXX XXX */ | |
93 | printf("DRAM test not implemented!\n"); | |
94 | ||
95 | return (0); | |
96 | } |