86 lines
2.4 KiB
ArmAsm
86 lines
2.4 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Board-specific sbf ddr/sdram init.
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*
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* (C) Copyright 2017 Angelo Dureghello <angelo@sysam.it>
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*/
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.global sbf_dram_init
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.text
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sbf_dram_init:
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move.l #0xFC04002D, %a1
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move.b #46, (%a1) /* DDR */
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/* slew settings */
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move.l #0xEC094060, %a1
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move.b #0, (%a1)
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/* use vco instead of cpu*2 clock for ddr clock */
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move.l #0xEC09001A, %a1
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move.w #0xE01D, (%a1)
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/* DDR settings */
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move.l #0xFC0B8180, %a1
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move.l #0x00000000, (%a1)
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move.l #0x40000000, (%a1)
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move.l #0xFC0B81AC, %a1
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move.l #0x01030203, (%a1)
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move.l #0xFC0B8000, %a1
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move.l #0x01010101, (%a1)+ /* 0x00 */
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move.l #0x00000101, (%a1)+ /* 0x04 */
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move.l #0x01010100, (%a1)+ /* 0x08 */
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move.l #0x01010000, (%a1)+ /* 0x0C */
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move.l #0x00010101, (%a1)+ /* 0x10 */
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move.l #0xFC0B8018, %a1
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move.l #0x00010100, (%a1)+ /* 0x18 */
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move.l #0x00000001, (%a1)+ /* 0x1C */
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move.l #0x01000001, (%a1)+ /* 0x20 */
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move.l #0x00000100, (%a1)+ /* 0x24 */
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move.l #0x00010001, (%a1)+ /* 0x28 */
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move.l #0x00000200, (%a1)+ /* 0x2C */
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move.l #0x01000002, (%a1)+ /* 0x30 */
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move.l #0x00000000, (%a1)+ /* 0x34 */
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move.l #0x00000100, (%a1)+ /* 0x38 */
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move.l #0x02000100, (%a1)+ /* 0x3C */
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move.l #0x02000407, (%a1)+ /* 0x40 */
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move.l #0x02030007, (%a1)+ /* 0x44 */
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move.l #0x02000100, (%a1)+ /* 0x48 */
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move.l #0x0A030203, (%a1)+ /* 0x4C */
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move.l #0x00020708, (%a1)+ /* 0x50 */
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move.l #0x00050008, (%a1)+ /* 0x54 */
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move.l #0x04030002, (%a1)+ /* 0x58 */
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move.l #0x00000004, (%a1)+ /* 0x5C */
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move.l #0x020A0000, (%a1)+ /* 0x60 */
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move.l #0x0C00000E, (%a1)+ /* 0x64 */
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move.l #0x00002004, (%a1)+ /* 0x68 */
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move.l #0x00000000, (%a1)+ /* 0x6C */
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move.l #0x00100010, (%a1)+ /* 0x70 */
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move.l #0x00100010, (%a1)+ /* 0x74 */
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move.l #0x00000000, (%a1)+ /* 0x78 */
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move.l #0x07990000, (%a1)+ /* 0x7C */
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move.l #0xFC0B80A0, %a1
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move.l #0x00000000, (%a1)+ /* 0xA0 */
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move.l #0x00C80064, (%a1)+ /* 0xA4 */
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move.l #0x44520002, (%a1)+ /* 0xA8 */
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move.l #0x00C80023, (%a1)+ /* 0xAC */
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move.l #0xFC0B80B4, %a1
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move.l #0x0000C350, (%a1) /* 0xB4 */
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move.l #0xFC0B80E0, %a1
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move.l #0x04000000, (%a1)+ /* 0xE0 */
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move.l #0x03000304, (%a1)+ /* 0xE4 */
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move.l #0x40040000, (%a1)+ /* 0xE8 */
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move.l #0xC0004004, (%a1)+ /* 0xEC */
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move.l #0x0642C000, (%a1)+ /* 0xF0 */
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move.l #0x00000642, (%a1)+ /* 0xF4 */
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move.l #0xFC0B8024, %a1
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tpf
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move.l #0x01000100, (%a1) /* 0x24 */
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move.l #0x2000, %d1
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bsr asm_delay
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rts
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