1/* 2 * Board-specific sbf ddr/sdram init. 3 * 4 * (C) Copyright 2017 Angelo Dureghello <angelo@sysam.it> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9.global sbf_dram_init 10.text 11 12sbf_dram_init: 13 move.l #0xFC04002D, %a1 14 move.b #46, (%a1) /* DDR */ 15 16 /* slew settings */ 17 move.l #0xEC094060, %a1 18 move.b #0, (%a1) 19 20 /* use vco instead of cpu*2 clock for ddr clock */ 21 move.l #0xEC09001A, %a1 22 move.w #0xE01D, (%a1) 23 24 /* DDR settings */ 25 move.l #0xFC0B8180, %a1 26 move.l #0x00000000, (%a1) 27 move.l #0x40000000, (%a1) 28 29 move.l #0xFC0B81AC, %a1 30 move.l #0x01030203, (%a1) 31 32 move.l #0xFC0B8000, %a1 33 move.l #0x01010101, (%a1)+ /* 0x00 */ 34 move.l #0x00000101, (%a1)+ /* 0x04 */ 35 move.l #0x01010100, (%a1)+ /* 0x08 */ 36 move.l #0x01010000, (%a1)+ /* 0x0C */ 37 move.l #0x00010101, (%a1)+ /* 0x10 */ 38 move.l #0xFC0B8018, %a1 39 move.l #0x00010100, (%a1)+ /* 0x18 */ 40 move.l #0x00000001, (%a1)+ /* 0x1C */ 41 move.l #0x01000001, (%a1)+ /* 0x20 */ 42 move.l #0x00000100, (%a1)+ /* 0x24 */ 43 move.l #0x00010001, (%a1)+ /* 0x28 */ 44 move.l #0x00000200, (%a1)+ /* 0x2C */ 45 move.l #0x01000002, (%a1)+ /* 0x30 */ 46 move.l #0x00000000, (%a1)+ /* 0x34 */ 47 move.l #0x00000100, (%a1)+ /* 0x38 */ 48 move.l #0x02000100, (%a1)+ /* 0x3C */ 49 move.l #0x02000407, (%a1)+ /* 0x40 */ 50 move.l #0x02030007, (%a1)+ /* 0x44 */ 51 move.l #0x02000100, (%a1)+ /* 0x48 */ 52 move.l #0x0A030203, (%a1)+ /* 0x4C */ 53 move.l #0x00020708, (%a1)+ /* 0x50 */ 54 move.l #0x00050008, (%a1)+ /* 0x54 */ 55 move.l #0x04030002, (%a1)+ /* 0x58 */ 56 move.l #0x00000004, (%a1)+ /* 0x5C */ 57 move.l #0x020A0000, (%a1)+ /* 0x60 */ 58 move.l #0x0C00000E, (%a1)+ /* 0x64 */ 59 move.l #0x00002004, (%a1)+ /* 0x68 */ 60 move.l #0x00000000, (%a1)+ /* 0x6C */ 61 move.l #0x00100010, (%a1)+ /* 0x70 */ 62 move.l #0x00100010, (%a1)+ /* 0x74 */ 63 move.l #0x00000000, (%a1)+ /* 0x78 */ 64 move.l #0x07990000, (%a1)+ /* 0x7C */ 65 move.l #0xFC0B80A0, %a1 66 move.l #0x00000000, (%a1)+ /* 0xA0 */ 67 move.l #0x00C80064, (%a1)+ /* 0xA4 */ 68 move.l #0x44520002, (%a1)+ /* 0xA8 */ 69 move.l #0x00C80023, (%a1)+ /* 0xAC */ 70 move.l #0xFC0B80B4, %a1 71 move.l #0x0000C350, (%a1) /* 0xB4 */ 72 move.l #0xFC0B80E0, %a1 73 move.l #0x04000000, (%a1)+ /* 0xE0 */ 74 move.l #0x03000304, (%a1)+ /* 0xE4 */ 75 move.l #0x40040000, (%a1)+ /* 0xE8 */ 76 move.l #0xC0004004, (%a1)+ /* 0xEC */ 77 move.l #0x0642C000, (%a1)+ /* 0xF0 */ 78 move.l #0x00000642, (%a1)+ /* 0xF4 */ 79 move.l #0xFC0B8024, %a1 80 tpf 81 move.l #0x01000100, (%a1) /* 0x24 */ 82 83 move.l #0x2000, %d1 84 bsr asm_delay 85 86 rts 87