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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 7b0a42219f30277f71f4405cbaf8a269f6d2d227 / . / board / alaska / alaska.c
blob: 9531703fc936263dc2b7e69fe66a7da0dc657c95 [file] [log] [blame]
wdenk983fda82004-10-28 00:09:35 +0000[diff] [blame]1/*
2 * (C) Copyright 2004, Freescale Inc.
3 * TsiChung Liew, Tsi-Chung.Liew@freescale.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <mpc8220.h>
26#include <asm/processor.h>
27#include <asm/mmu.h>
28
29void setupBat (ulong size)
30{
31 ulong batu, batl;
32 int blocksize = 0;
33
34 /* Flash 0 */
35#if defined (CFG_AMD_BOOT)
36 batu = CFG_FLASH0_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
37#else
38 batu = CFG_FLASH0_BASE | (BL_16M << 2) | BPP_RW | BPP_RX;
39#endif
40 batl = CFG_FLASH0_BASE | 0x22;
41 write_bat (IBAT0, batu, batl);
42 write_bat (DBAT0, batu, batl);
43
44 /* Flash 1 */
45#if defined (CFG_AMD_BOOT)
46 batu = CFG_FLASH1_BASE | (BL_16M << 2) | BPP_RW | BPP_RX;
47#else
48 batu = CFG_FLASH1_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
49#endif
50 batl = CFG_FLASH1_BASE | 0x22;
51 write_bat (IBAT1, batu, batl);
52 write_bat (DBAT1, batu, batl);
53
54 /* CPLD */
55 batu = CFG_CPLD_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
56 batl = CFG_CPLD_BASE | 0x22;
57 write_bat (IBAT2, 0, 0);
58 write_bat (DBAT2, batu, batl);
59
60 /* FPGA */
61 batu = CFG_FPGA_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
62 batl = CFG_FPGA_BASE | 0x22;
63 write_bat (IBAT3, 0, 0);
64 write_bat (DBAT3, batu, batl);
65
66 /* MBAR - Data only */
67 batu = CFG_MBAR | BPP_RW | BPP_RX;
68 batl = CFG_MBAR | 0x22;
69 mtspr (IBAT4L, 0);
70 mtspr (IBAT4U, 0);
71 mtspr (DBAT4L, batl);
72 mtspr (DBAT4U, batu);
73
74 /* MBAR - SRAM */
75 batu = CFG_SRAM_BASE | BPP_RW | BPP_RX;
76 batl = CFG_SRAM_BASE | 0x42;
77 mtspr (IBAT5L, batl);
78 mtspr (IBAT5U, batu);
79 mtspr (DBAT5L, batl);
80 mtspr (DBAT5U, batu);
81
82 if (size <= 0x800000) /* 8MB */
83 blocksize = BL_8M << 2;
84 else if (size <= 0x1000000) /* 16MB */
85 blocksize = BL_16M << 2;
86 else if (size <= 0x2000000) /* 32MB */
87 blocksize = BL_32M << 2;
88 else if (size <= 0x4000000) /* 64MB */
89 blocksize = BL_64M << 2;
90 else if (size <= 0x8000000) /* 128MB */
91 blocksize = BL_128M << 2;
92 else if (size <= 0x10000000) /* 256MB */
93 blocksize = BL_256M << 2;
94
95 /* Memory */
96 batu = CFG_SDRAM_BASE | blocksize | BPP_RW | BPP_RX;
97 batl = CFG_SDRAM_BASE | 0x42;
98 mtspr (IBAT6L, batl);
99 mtspr (IBAT6U, batu);
100 mtspr (DBAT6L, batl);
101 mtspr (DBAT6U, batu);
102
103 /* memory size is less than 256MB */
104 if (size <= 0x10000000) {
105 /* Nothing */
106 batu = 0;
107 batl = 0;
108 } else {
109 size -= 0x10000000;
110 if (size <= 0x800000) /* 8MB */
111 blocksize = BL_8M << 2;
112 else if (size <= 0x1000000) /* 16MB */
113 blocksize = BL_16M << 2;
114 else if (size <= 0x2000000) /* 32MB */
115 blocksize = BL_32M << 2;
116 else if (size <= 0x4000000) /* 64MB */
117 blocksize = BL_64M << 2;
118 else if (size <= 0x8000000) /* 128MB */
119 blocksize = BL_128M << 2;
120 else if (size <= 0x10000000) /* 256MB */
121 blocksize = BL_256M << 2;
122
123 batu = (CFG_SDRAM_BASE +
124 0x10000000) | blocksize | BPP_RW | BPP_RX;
125 batl = (CFG_SDRAM_BASE + 0x10000000) | 0x42;
126 }
127
128 mtspr (IBAT7L, batl);
129 mtspr (IBAT7U, batu);
130 mtspr (DBAT7L, batl);
131 mtspr (DBAT7U, batu);
132}
133
134long int initdram (int board_type)
135{
136 ulong size;
137
138 size = dramSetup ();
139
140/* if iCache ad dCache is defined */
Jon Loeligerfcec2eb2007-07-09 18:19:09 -0500[diff] [blame]141#if defined(CONFIG_CMD_CACHE)
wdenk983fda82004-10-28 00:09:35 +0000[diff] [blame]142/* setupBat(size);*/
143#endif
144
145 return size;
146}
147
148int checkboard (void)
149{
150 puts ("Board: Alaska MPC8220 Evaluation Board\n");
151
152 return 0;
153}