init_ddr.inc

Redboot, boot-loader of Linux for Freescale ARM family.

;*================================================================================================
;* Copyright (C) 2005, Freescale Semiconductor, Inc. All Rights Reserved
;* THIS SOURCE CODE IS CONFIDENTIAL AND PROPRIETARY AND MAY NOT
;* BE USED OR DISTRIBUTED WITHOUT THE WRITTEN PERMISSION OF
;* Freescale Semiconductor, Inc.
;*================================================================================================
; Initialization script for i300-30 i.300-30 ADS board using Realview Debugger.
;*================================================================================================
; Revision History:
;                             Modification     Tracking
; Author (core ID)             Date D/M/Y       Number    Description of Changes
; -------------------------   ------------    ----------  ----------------------------------------
; Nicolas ROUX                 02/06/2005                 Creation of the file.
;*================================================================================================

wait = on

setreg @CP15_CONTROL=0x00050078

; AHB clock divided by 6 - IPG clock divided by 6
setmem /32 0x53F80004 =0x00800528


; ESDCTL Reset/Initialize
setmem /32 0xB8001010 =0x00000002
pause 1

; Initialize DDRAM
setmem /32 0xB800100C =0x00395728
setmem /32 0xB8001010 =0x00000014
pause 1 
setmem /32 0xB8001008 =0x92116080
setmem /16 0x90000400 =0x0000
setmem /32 0xB8001008 =0xA2116080
setmem /16 0x90000000 =0x0000
setmem /16 0x90000000 =0x0000
setmem /32 0xB8001008 =0xB2116080
setmem /8  0x90000033 =0x00
setmem /8  0x91000000 =0x00
setmem /32 0xB8001008 =0x82116080
setmem /16 0x90000000 =0x0000

; Dummy DEADBEEF write into DDRAM
setmem /16 0x90000000 =0xDEAD
setmem /16 0x90000002 =0xBEEF

; Initialize NANDC
; Select 16 bits NAND flash
;setmem /32 0x53F8000C =0x00080000
; Unlock blocks
;setmem /16 0xB8000E0A =0x0002
;setmem /16 0xB8000E14 =0x0000
;setmem /16 0xB8000E16 =0x0FFF
;setmem /16 0xB8000E12 =0x0004

; Initialize WEIM for CS0
  ; Asynchronous mode WEIM registers
  ; 16 bits, no wrapp does not match default configuration of i300_30
setmem /32 0xB8002000 =0x23C29000     
setmem /32 0xB8002004 =0x60000D01
setmem /32 0xB8002008 =0x00000080

; Initialize WEIM for CS0 (NOR FLASH on I300-30, Intel strata 64MBytes / 32 bits width by default) 
  ; Asynchronous mode WEIM registers
  ; 32 bits, wrapp
;setmem /32 0xB8002000 =0x20428F00
;setmem /32 0xB8002004 =0x60000E03
;setmem /32 0xB8002008 =0x00000080


;*================================================================================================
; Initialisation done !
;*================================================================================================


readfile,raw,gui "r:\tftp\i30030ads_redboot.bin"=0x91F00000

setreg @CPSR_FLGE=0x00

setreg @pc=0x91F00000