]> git.ipfire.org Git - people/ms/u-boot.git/blob - board/adder/adder.c
rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / board / adder / adder.c
1 /*
2 * Copyright (C) 2004-2005 Arabella Software Ltd.
3 * Yuli Barcohen <yuli@arabellasw.com>
4 *
5 * Support for Analogue&Micro Adder boards family.
6 * Tested on AdderII and Adder87x.
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 <common.h>
28 #include <mpc8xx.h>
29 #if defined(CONFIG_OF_LIBFDT)
30 #include <libfdt.h>
31 #endif
32
33 /*
34 * SDRAM is single Samsung K4S643232F-T70 chip (8MB)
35 * or single Micron MT48LC4M32B2TG-7 chip (16MB).
36 * Minimal CPU frequency is 40MHz.
37 */
38 static uint sdram_table[] = {
39 /* Single read (offset 0x00 in UPM RAM) */
40 0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xe0bbbc00,
41 0x10f77c44, 0xf3fffc07, 0xfffffc04, 0xfffffc04,
42
43 /* Burst read (offset 0x08 in UPM RAM) */
44 0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xf0affc00,
45 0xf0affc00, 0xf0affc00, 0xf0affc00, 0x10a77c44,
46 0xf7bffc47, 0xfffffc35, 0xfffffc34, 0xfffffc35,
47 0xfffffc35, 0x1ff77c35, 0xfffffc34, 0x1fb57c35,
48
49 /* Single write (offset 0x18 in UPM RAM) */
50 0x1f27fc24, 0xe0aebc04, 0x00b93c00, 0x13f77c47,
51 0xfffdfc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
52
53 /* Burst write (offset 0x20 in UPM RAM) */
54 0x1f07fc24, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
55 0xf0affc00, 0xe0abbc00, 0x1fb77c47, 0xfffffc04,
56 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
57 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
58
59 /* Refresh (offset 0x30 in UPM RAM) */
60 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
61 0xfffffc84, 0xfffffc07, 0xfffffc04, 0xfffffc04,
62 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
63
64 /* Exception (offset 0x3C in UPM RAM) */
65 0xfffffc27, 0xfffffc04, 0xfffffc04, 0xfffffc04
66 };
67
68 phys_size_t initdram (int board_type)
69 {
70 long int msize;
71 volatile immap_t *immap = (volatile immap_t *)CONFIG_SYS_IMMR;
72 volatile memctl8xx_t *memctl = &immap->im_memctl;
73
74 upmconfig(UPMA, sdram_table, sizeof(sdram_table) / sizeof(uint));
75
76 /* Configure SDRAM refresh */
77 memctl->memc_mptpr = MPTPR_PTP_DIV32; /* BRGCLK/32 */
78
79 memctl->memc_mamr = (94 << 24) | CONFIG_SYS_MAMR; /* No refresh */
80 udelay(200);
81
82 /* Run precharge from location 0x15 */
83 memctl->memc_mar = 0x0;
84 memctl->memc_mcr = 0x80002115;
85 udelay(200);
86
87 /* Run 8 refresh cycles */
88 memctl->memc_mcr = 0x80002830;
89 udelay(200);
90
91 /* Run MRS pattern from location 0x16 */
92 memctl->memc_mar = 0x88;
93 memctl->memc_mcr = 0x80002116;
94 udelay(200);
95
96 memctl->memc_mamr |= MAMR_PTAE; /* Enable refresh */
97 memctl->memc_or1 = ~(CONFIG_SYS_SDRAM_MAX_SIZE - 1) | OR_CSNT_SAM;
98 memctl->memc_br1 = CONFIG_SYS_SDRAM_BASE | BR_PS_32 | BR_MS_UPMA | BR_V;
99
100 msize = get_ram_size(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_SDRAM_MAX_SIZE);
101 memctl->memc_or1 |= ~(msize - 1);
102
103 return msize;
104 }
105
106 int checkboard( void )
107 {
108 puts("Board: Adder");
109 #if defined(CONFIG_MPC885_FAMILY)
110 puts("87x\n");
111 #elif defined(CONFIG_MPC866_FAMILY)
112 puts("II\n");
113 #endif
114
115 return 0;
116 }
117
118 #if defined(CONFIG_OF_BOARD_SETUP)
119 void ft_board_setup(void *blob, bd_t *bd)
120 {
121 ft_cpu_setup(blob, bd);
122
123 }
124 #endif