]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
536e7dac TL |
2 | /* |
3 | * (C) Copyright 2000-2003 | |
4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
5 | * | |
aa0d99fc | 6 | * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc. |
536e7dac | 7 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) |
536e7dac TL |
8 | */ |
9 | ||
10 | #include <config.h> | |
d678a59d | 11 | #include <common.h> |
49acd56e | 12 | #include <init.h> |
401d1c4f | 13 | #include <asm/global_data.h> |
536e7dac | 14 | #include <asm/immap.h> |
aa0d99fc | 15 | #include <asm/io.h> |
c05ed00a | 16 | #include <linux/delay.h> |
536e7dac TL |
17 | |
18 | DECLARE_GLOBAL_DATA_PTR; | |
19 | ||
20 | int checkboard(void) | |
21 | { | |
22 | puts("Board: "); | |
23 | puts("Freescale M53017EVB\n"); | |
24 | return 0; | |
25 | }; | |
26 | ||
f1683aa7 | 27 | int dram_init(void) |
536e7dac | 28 | { |
aa0d99fc | 29 | sdram_t *sdram = (sdram_t *)(MMAP_SDRAM); |
536e7dac TL |
30 | u32 dramsize, i; |
31 | ||
aa6e94de | 32 | dramsize = CFG_SYS_SDRAM_SIZE * 0x100000; |
536e7dac TL |
33 | |
34 | for (i = 0x13; i < 0x20; i++) { | |
35 | if (dramsize == (1 << i)) | |
36 | break; | |
37 | } | |
38 | i--; | |
39 | ||
aa6e94de TR |
40 | out_be32(&sdram->cs0, CFG_SYS_SDRAM_BASE | i); |
41 | #ifdef CFG_SYS_SDRAM_BASE1 | |
42 | out_be32(&sdram->cs1, CFG_SYS_SDRAM_BASE | i); | |
536e7dac | 43 | #endif |
aa6e94de TR |
44 | out_be32(&sdram->cfg1, CFG_SYS_SDRAM_CFG1); |
45 | out_be32(&sdram->cfg2, CFG_SYS_SDRAM_CFG2); | |
536e7dac TL |
46 | |
47 | udelay(500); | |
48 | ||
49 | /* Issue PALL */ | |
aa6e94de | 50 | out_be32(&sdram->ctrl, CFG_SYS_SDRAM_CTRL | 2); |
536e7dac TL |
51 | asm("nop"); |
52 | ||
53 | /* Perform two refresh cycles */ | |
aa6e94de TR |
54 | out_be32(&sdram->ctrl, CFG_SYS_SDRAM_CTRL | 4); |
55 | out_be32(&sdram->ctrl, CFG_SYS_SDRAM_CTRL | 4); | |
536e7dac TL |
56 | asm("nop"); |
57 | ||
58 | /* Issue LEMR */ | |
aa6e94de | 59 | out_be32(&sdram->mode, CFG_SYS_SDRAM_MODE); |
536e7dac | 60 | asm("nop"); |
aa6e94de | 61 | out_be32(&sdram->mode, CFG_SYS_SDRAM_EMOD); |
536e7dac TL |
62 | asm("nop"); |
63 | ||
aa6e94de | 64 | out_be32(&sdram->ctrl, CFG_SYS_SDRAM_CTRL | 2); |
536e7dac TL |
65 | asm("nop"); |
66 | ||
aa0d99fc | 67 | out_be32(&sdram->ctrl, |
aa6e94de | 68 | (CFG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00); |
536e7dac TL |
69 | asm("nop"); |
70 | ||
71 | udelay(100); | |
72 | ||
088454cd SG |
73 | gd->ram_size = dramsize; |
74 | ||
75 | return 0; | |
536e7dac TL |
76 | }; |
77 | ||
78 | int testdram(void) | |
79 | { | |
80 | /* TODO: XXX XXX XXX */ | |
81 | printf("DRAM test not implemented!\n"); | |
82 | ||
83 | return (0); | |
84 | } |