]> git.ipfire.org Git - people/ms/u-boot.git/blob - board/esd/pmc440/sdram.c
rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / board / esd / pmc440 / sdram.c
1 /*
2 * (C) Copyright 2006
3 * Sylvie Gohl, AMCC/IBM, gohl.sylvie@fr.ibm.com
4 * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
5 * Thierry Roman, AMCC/IBM, thierry_roman@fr.ibm.com
6 * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
7 * Robert Snyder, AMCC/IBM, rob.snyder@fr.ibm.com
8 *
9 * (C) Copyright 2006-2007
10 * Stefan Roese, DENX Software Engineering, sr@denx.de.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28 /* define DEBUG for debug output */
29 #undef DEBUG
30
31 #include <common.h>
32 #include <asm/processor.h>
33 #include <asm/io.h>
34 #include <ppc440.h>
35
36 extern int denali_wait_for_dlllock(void);
37 extern void denali_core_search_data_eye(void);
38
39
40 #if defined(CONFIG_NAND_SPL)
41 /* Using cpu/ppc4xx/speed.c to calculate the bus frequency is too big
42 * for the 4k NAND boot image so define bus_frequency to 133MHz here
43 * which is save for the refresh counter setup.
44 */
45 #define get_bus_freq(val) 133000000
46 #endif
47
48 /*************************************************************************
49 *
50 * initdram -- 440EPx's DDR controller is a DENALI Core
51 *
52 ************************************************************************/
53 phys_size_t initdram (int board_type)
54 {
55 #if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
56 #if !defined(CONFIG_NAND_SPL)
57 ulong speed = get_bus_freq(0);
58 #else
59 ulong speed = 133333333; /* 133MHz is on the safe side */
60 #endif
61
62 mtsdram(DDR0_02, 0x00000000);
63
64 mtsdram(DDR0_00, 0x0000190A);
65 mtsdram(DDR0_01, 0x01000000);
66 mtsdram(DDR0_03, 0x02030602);
67 mtsdram(DDR0_04, 0x0A020200);
68 mtsdram(DDR0_05, 0x02020308);
69 mtsdram(DDR0_06, 0x0102C812);
70 mtsdram(DDR0_07, 0x000D0100);
71 mtsdram(DDR0_08, 0x02430001);
72 mtsdram(DDR0_09, 0x00011D5F);
73 mtsdram(DDR0_10, 0x00000300);
74 mtsdram(DDR0_11, 0x0027C800);
75 mtsdram(DDR0_12, 0x00000003);
76 mtsdram(DDR0_14, 0x00000000);
77 mtsdram(DDR0_17, 0x19000000);
78 mtsdram(DDR0_18, 0x19191919);
79 mtsdram(DDR0_19, 0x19191919);
80 mtsdram(DDR0_20, 0x0B0B0B0B);
81 mtsdram(DDR0_21, 0x0B0B0B0B);
82 mtsdram(DDR0_22, 0x00267F0B);
83 mtsdram(DDR0_23, 0x00000000);
84 mtsdram(DDR0_24, 0x01010002);
85 if (speed > 133333334)
86 mtsdram(DDR0_26, 0x5B26050C);
87 else
88 mtsdram(DDR0_26, 0x5B260408);
89 mtsdram(DDR0_27, 0x0000682B);
90 mtsdram(DDR0_28, 0x00000000);
91 mtsdram(DDR0_31, 0x00000000);
92 mtsdram(DDR0_42, 0x01000006);
93 mtsdram(DDR0_43, 0x030A0200);
94 mtsdram(DDR0_44, 0x00000003);
95 mtsdram(DDR0_02, 0x00000001);
96
97 denali_wait_for_dlllock();
98 #endif /* #ifndef CONFIG_NAND_U_BOOT */
99
100 #ifdef CONFIG_DDR_DATA_EYE
101 /* -----------------------------------------------------------+
102 * Perform data eye search if requested.
103 * ----------------------------------------------------------*/
104 denali_core_search_data_eye();
105 #endif
106
107 /*
108 * Clear possible errors resulting from data-eye-search.
109 * If not done, then we could get an interrupt later on when
110 * exceptions are enabled.
111 */
112 set_mcsr(get_mcsr());
113
114 return (CONFIG_SYS_MBYTES_SDRAM << 20);
115 }