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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / c93f70962ba6a68cb8b829720f74d2328ced6e22 / . / board / svm_sc8xx / svm_sc8xx.c
blob: db3162a0e1581a0436b1cf7d661e436232d61643 [file] [log] [blame]
wdenkdc7c9a12003-03-26 06:55:25 +0000[diff] [blame]1/*
2 * (C) Copyright 2000, 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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 <mpc8xx.h>
26
27/* ------------------------------------------------------------------------- */
28const uint sdram_table[] =
29{
30/*-----------------
31 UPM A contents:
32----------------- */
33/*---------------------------------------------------
34 Read Single Beat Cycle. Offset 0 in the RAM array.
35---------------------------------------------------- */
360x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00 ,
370x1ff77c47, 0x1ff77c35, 0xefeabc34, 0x1fb57c35 ,
38/*------------------------------------------------
39 Read Burst Cycle. Offset 0x8 in the RAM array.
40------------------------------------------------ */
410x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
420xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,
430xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
440xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
45/*-------------------------------------------------------
46 Write Single Beat Cycle. Offset 0x18 in the RAM array
47------------------------------------------------------- */
480x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47 ,
490xffffffff, 0xffffffff, 0xffffffff, 0xffffffff ,
50/*-------------------------------------------------
51 Write Burst Cycle. Offset 0x20 in the RAM array
52------------------------------------------------- */
530x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
540xf0affc00, 0xe1bbbc04, 0x1ff77c47, 0xffffffff,
550xffffffff, 0xffffffff, 0xffffffff, 0xffffffff ,
560xffffffff, 0xffffffff, 0xffffffff, 0xffffffff ,
57/*------------------------------------------------------------------------
58 Periodic Timer Expired. For DRAM refresh. Offset 0x30 in the RAM array
59------------------------------------------------------------------------ */
600x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
610xfffffc84, 0xfffffc07, 0xffffffff, 0xffffffff,
620xffffffff, 0xffffffff, 0xffffffff, 0xffffffff ,
63/*-----------
64* Exception:
65* ----------- */
660x7ffefc07, 0xffffffff, 0xffffffff, 0xffffffff ,
67};
68
69/* ------------------------------------------------------------------------- */
70/*
71 * Check Board Identity:
72 *
73 * Test ID string (SVM8...)
74 *
75 * Return 1 for "SC8xx" type, 0 else.
76 */
77
78int checkboard (void)
79{
80 unsigned char *s = getenv("serial#");
81 int board_type;
82
83 if (!s || strncmp(s, "SVM8", 4)) {
84 printf ("### No HW ID - assuming SVM SC8xx\n");
85 return (0);
86 }
87
88 board_type = 1;
89
90 for (; *s; ++s) {
91 if (*s == ' ')
92 break;
93 putc (*s);
94 }
95
96 putc ('\n');
97
98 return (0);
99}
100
101/* ------------------------------------------------------------------------- */
102
103long int initdram (int board_type)
104{
105 volatile immap_t *immap = (immap_t *)CFG_IMMR;
106 volatile memctl8xx_t *memctl = &immap->im_memctl;
107 long int size_b0 = 0;
108
109 upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
110
111 memctl->memc_mptpr = CFG_MPTPR;
112#if defined (CONFIG_SDRAM_16M)
113 memctl->memc_mamr = 0x00802114 | CFG_MxMR_PTx;
114 memctl->memc_mcr = 0x80002105; /* SDRAM bank 0 */
115 udelay(1);
116 memctl->memc_mcr = 0x80002830;
117 udelay(1);
118 memctl->memc_mar = 0x00000088;
119 udelay(1);
120 memctl->memc_mcr = 0x80002106;
121 udelay(1);
122 memctl->memc_or1 = 0xff000a00;
123 size_b0 = 0x01000000;
124#elif defined (CONFIG_SDRAM_32M)
125 memctl->memc_mamr = 0x00904114 | CFG_MxMR_PTx;
126 memctl->memc_mcr = 0x80002105; /* SDRAM bank 0 */
127 udelay(1);
128 memctl->memc_mcr = 0x80002830;
129 udelay(1);
130 memctl->memc_mar = 0x00000088;
131 udelay(1);
132 memctl->memc_mcr = 0x80002106;
133 udelay(1);
134 memctl->memc_or1 = 0xfe000a00;
135 size_b0 = 0x02000000;
136#elif defined (CONFIG_SDRAM_64M)
137 memctl->memc_mamr = 0x00a04114 | CFG_MxMR_PTx;
138 memctl->memc_mcr = 0x80002105; /* SDRAM bank 0 */
139 udelay(1);
140 memctl->memc_mcr = 0x80002830;
141 udelay(1);
142 memctl->memc_mar = 0x00000088;
143 udelay(1);
144 memctl->memc_mcr = 0x80002106;
145 udelay(1);
146 memctl->memc_or1 = 0xfc000a00;
147 size_b0 = 0x04000000;
148#else
149#error SDRAM size configuration missing.
150#endif
151 memctl->memc_br1 = 0x00000081;
152 udelay(200);
153 return (size_b0 );
154}
155
156#if (CONFIG_COMMANDS & CFG_CMD_DOC)
157extern void doc_probe (ulong physadr);
158void doc_init (void)
159{
160 doc_probe (CFG_DOC_BASE);
161}
162#endif
163