init_ddr.inc

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

clearbreak
bexec 0x00000000
wait = on
reset
pause 2

setreg @CP15_CONTROL=0x00050078
// configuring CP15 for enabling the pripheral bus
setreg @CP15_PERIP_MEM_REMAP=0x40000015

// SPBA setup
setmem /32 0x5003C000 =0x7
setmem /32 0x5003C004 =0x7
setmem /32 0x5003C008 =0x7
setmem /32 0x5003C00C =0x7
setmem /32 0x5003C010 =0x7
setmem /32 0x5003C014 =0x7
setmem /32 0x5003C018 =0x7
setmem /32 0x5003C01C =0x7
setmem /32 0x5003C020 =0x7
setmem /32 0x5003C024 =0x7
setmem /32 0x5003C028 =0x7
setmem /32 0x5003C02C =0x7
setmem /32 0x5003C030 =0x7
setmem /32 0x5003C034 =0x7
setmem /32 0x5003C038 =0x7


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

; Initialize DDRAM
setmem /32 0xB800100C =0x00395728
setmem /32 0xB8001010 =0x00000015
pause 1 
setmem /32 0xB8001008 =0x92216080
setmem /16 0x90000400 =0x0000
setmem /32 0xB8001008 =0xA2216080
setmem /16 0x90000000 =0x0000
setmem /16 0x90000000 =0x0000
setmem /32 0xB8001008 =0xB2216080
setmem /8  0x90000033 =0x00
setmem /8  0x92000000 =0x00
setmem /32 0xB8001008 =0x82216080
setmem /16 0x90000000 =0x0000

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

; Initialize WEIM for CS0
  ; Asynchronous mode WEIM registers
  ; 16 bits, no wrapp does not match default configuration of i300_30
//setmem /32 0xB8002000 =0x23D29000     
//setmem /32 0xB8002004 =0x60000D01
//setmem /32 0xB8002008 =0x00000080
//setmem /16 0xA000439E =0x0060
//setmem /16 0xA000439E =0x0003

; 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\mxc30030ads_redboot.bin"=0x93F00000

setreg @CPSR_FLGE=0x0

setreg @pc=0x93F00000