mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
69 lines
1.1 KiB
ArmAsm
69 lines
1.1 KiB
ArmAsm
/*
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* board/mx1ads/lowlevel_init.S
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*
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* (c) Copyright 2004
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* Techware Information Technology, Inc.
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* http://www.techware.com.tw/
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*
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* Ming-Len Wu <minglen_wu@techware.com.tw>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <version.h>
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#define SDCTL0 0x221000
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#define SDCTL1 0x221004
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_TEXT_BASE:
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.word CONFIG_SYS_TEXT_BASE
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.globl lowlevel_init
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lowlevel_init:
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/* memory controller init */
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ldr r1, =SDCTL0
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/* Set Precharge Command */
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ldr r3, =0x92120200
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/* ldr r3, =0x92120251
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*/
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str r3, [r1]
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/* Issue Precharge All Commad */
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ldr r3, =0x8200000
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ldr r2, [r3]
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/* Set AutoRefresh Command */
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ldr r3, =0xA2120200
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str r3, [r1]
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/* Issue AutoRefresh Command */
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ldr r3, =0x8000000
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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ldr r2, [r3]
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/* Set Mode Register */
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ldr r3, =0xB2120200
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str r3, [r1]
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/* Issue Mode Register Command */
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ldr r3, =0x08111800 /* Mode Register Value */
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ldr r2, [r3]
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/* Set Normal Mode */
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ldr r3, =0x82124200
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str r3, [r1]
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/* everything is fine now */
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mov pc, lr
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