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
9 * (C) Copyright 2006-2007
10 * Stefan Roese, DENX Software Engineering, sr@denx.de.
12 * SPDX-License-Identifier: GPL-2.0+
15 /* define DEBUG for debug output */
19 #include <asm/processor.h>
21 #include <asm/ppc440.h>
23 DECLARE_GLOBAL_DATA_PTR;
25 /*-----------------------------------------------------------------------------+
27 *-----------------------------------------------------------------------------*/
28 extern int denali_wait_for_dlllock(void);
29 extern void denali_core_search_data_eye(void);
31 /*************************************************************************
33 * initdram -- 440EPx's DDR controller is a DENALI Core
35 ************************************************************************/
38 #if !defined(CONFIG_SYS_RAMBOOT)
39 ulong speed = get_bus_freq(0);
41 mtsdram(DDR0_02, 0x00000000);
43 mtsdram(DDR0_00, 0x0000190A);
44 mtsdram(DDR0_01, 0x01000000);
45 mtsdram(DDR0_03, 0x02030602);
46 mtsdram(DDR0_04, 0x0A020200);
47 mtsdram(DDR0_05, 0x02020308);
48 mtsdram(DDR0_06, 0x0102C812);
49 mtsdram(DDR0_07, 0x000D0100);
50 mtsdram(DDR0_08, 0x02430001);
51 mtsdram(DDR0_09, 0x00011D5F);
52 mtsdram(DDR0_10, 0x00000100);
53 mtsdram(DDR0_11, 0x0027C800);
54 mtsdram(DDR0_12, 0x00000003);
55 mtsdram(DDR0_14, 0x00000000);
56 mtsdram(DDR0_17, 0x19000000);
57 mtsdram(DDR0_18, 0x19191919);
58 mtsdram(DDR0_19, 0x19191919);
59 mtsdram(DDR0_20, 0x0B0B0B0B);
60 mtsdram(DDR0_21, 0x0B0B0B0B);
61 mtsdram(DDR0_22, 0x00267F0B);
62 mtsdram(DDR0_23, 0x00000000);
63 mtsdram(DDR0_24, 0x01010002);
64 if (speed > 133333334)
65 mtsdram(DDR0_26, 0x5B26050C);
67 mtsdram(DDR0_26, 0x5B260408);
68 mtsdram(DDR0_27, 0x0000682B);
69 mtsdram(DDR0_28, 0x00000000);
70 mtsdram(DDR0_31, 0x00000000);
71 mtsdram(DDR0_42, 0x01000006);
72 mtsdram(DDR0_43, 0x030A0200);
73 mtsdram(DDR0_44, 0x00000003);
74 mtsdram(DDR0_02, 0x00000001);
76 denali_wait_for_dlllock();
77 #endif /* #ifndef CONFIG_SYS_RAMBOOT */
79 #ifdef CONFIG_DDR_DATA_EYE
80 /* -----------------------------------------------------------+
81 * Perform data eye search if requested.
82 * ----------------------------------------------------------*/
83 denali_core_search_data_eye();
87 * Clear possible errors resulting from data-eye-search.
88 * If not done, then we could get an interrupt later on when
89 * exceptions are enabled.
93 gd->ram_size = CONFIG_SYS_MBYTES_SDRAM << 20;