init_ddr_mem1_x16cs0.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

; --------------------------------------------------------------
;	Configure and enable MCU PLL for 399/133
; --------------------------------------------------------------
setmem /32 0x50050008 =0x60
setmem /32 0x5005001C =0x60

setmem /32 0x50050010 =0xFFFFFF97
setmem /32 0x50050024 =0xFFFFFF97

setmem /32 0x5005000C =0x68F
setmem /32 0x50050020 =0x68F

setmem /32 0x50058004 =0x836

setmem /32 0x5004400C =0x82C62B84

pause 1

setmem /32 0x50058044 =0x1220

setmem /32 0x50058040 =0x200140

setmem /32 0x50058000 =0x5540

setmem /32 0x50050000 =0x222

pause 1

setmem /32 0x5005803C =0x1


; --------------------------------------------------------------
;	Configure SDRAM Chip Select (CSD0)
; --------------------------------------------------------------
;	Initialize 32bit DDR SDRAM (cacheable region)
; --------------------------------------------------------------

; Configure ESDMISC, Set to DDR Mode 
setmem /32 0xB8001010 =0x00000004

pause 1 

; Configure CSD0 ESDCFG0
; XP=2 MRD=2 RAS=6 CAS=3 Clocks
setmem /32 0xB8001004 =0x00395728


;****************************************************
; The following sequence is required to startup SDRAM
; Do NOT modify or rearrange please
;****************************************************

; Configure SDRAM Operating mode to Precharge Command
; MODE=PRECHARGE ALL.
; PRECHARGE ALL (A10=1). 
; ROW/COL Muxing NOT used outside NORMAL Mode.

setmem /32 0xB8001000 =0x92210080
setmem /16 0x80000400 =0x0000

; Configure SDRAM Operating mode to Auto-Refresh Command
; AUTO REFRESH, AUTO REFRESH..

setmem /32 0xB8001000 =0xA2210080
setmem /16 0x80000000 =0x0000
setmem /16 0x80000000 =0x0000

; Configure SDRAM Operating mode to Load Mode Register Command
; MODE=LODE MODE REGISTER.
; Self Refresh Coverage = 4 Banks, Driver Strength = Full strength.  
;(Program MODE EXTENDED REGISTER, (BA1/A24=1).)

setmem /32 0xB8001000 =0xB2210080
setmem /8 0x80000033  =0x00
setmem /16 0x81000000 =0x0000

; Configure CSD0 ESDCTL0 and go into Normal Read/Write Mode
; 32-bit;  BL=8; row=13; col=9; MODE=Normal.
	; Dummy Write.

setmem /32 0xB8001000 =0x82216080
setmem /32 0x80000000 =0xC001C001


; --------------------------------------------------------
; End of DDR initialization through cacheable addresses
; --------------------------------------------------------

; --------------------------------------------------------------
; Initialize WEIM CS0 setup (A-Sync. Mode)
; --------------------------------------------------------------

; Configure CS0 UCR for operation at 133MHz  

setmem /32 0xB8002000 =0x11414C80   

; Configure CS0 LCR

setmem /32 0xB8002004 =0xC0000D03   

; Configure CS0 ACR

setmem /32 0xB8002008 =0x0021BC00   

;--------------------------------------------------------------
; CS4 setup
; --------------------------------------------------------------

; Configure CS4 UCR for EVB x16 CPLD and PSRAM for operation at 133MHz(lightly padded)

; Configure CS4 UCR
setmem /32 0xB8002040 =0x0000DCF6   

; Configure CS4 LCR
setmem /32 0xB8002044 =0x444A4541  

; Configure CS4 ACR
setmem /32 0xB8002048 =0x44443302   

// Set Drive Strength to High Settings
// ------------------------------------------------------------------------
// ---- Set Drive Strength on WEIM and SDRAM to High Drive Strength --------
// ----         SDRAM is controlled by groups 1 through 5
// ----         WEIM is controlled by groups 6 through 9
// ------------------------------------------------------------------------
//Configure Pad Groups 1 to High Drive Strength, set PKE & DDR_Input
setmem /16 0x50040200 =0x0092
		
//Configure Pad Groups 2 to High Drive Strength
setmem /16 0x50040202 =0x0002
		
//Configure Pad Groups 3 to High Drive Strength
setmem /16 0x50040204 =0x0002

//Configure Pad Groups 4 to High Drive Strength, set PKE & DDR_Input
setmem /16 0x50040206 =0x0092

//Configure Pad Groups 5 to High Drive Strength
setmem /16 0x50040208 =0x0002

//Configure Pad Groups 6 to High Drive Strength
setmem /16 0x5004020A =0x0002

//Configure Pad Groups 7 to High Drive Strength
setmem /16 0x5004020C =0x0002

//Configure Pad Groups 8 to High Drive Strength
setmem /16 0x5004020E =0x0002

//Configure Pad Groups 9 to High Drive Strength, set PKE
setmem /16 0x50040210 =0x0082

//readfile,raw,gui "r:\tftp\mxc91131evbmem1_redboot.bin"=0x83F00000
readfile,raw,gui "r:\tftp\mxc91131evbmem1_redboot.bin"=0x83F00000

setreg @R15=0x83F00000