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 0xB8001004 =0x00395728
setmem /32 0xB8001010 =0x00000015
pause 1 
setmem /32 0xB8001000 =0x92216080
setmem /16 0x80000400 =0x0000
setmem /32 0xB8001000 =0xA2216080
setmem /16 0x80000000 =0x0000
setmem /16 0x80000000 =0x0000
setmem /32 0xB8001000 =0xB2216080
setmem /8 0x80000033  =0x00
setmem /8 0x82000000  =0x00
setmem /32 0xB8001000 =0x82216080
setmem /16 0x90000000 =0x0000

; Dummy DEADBEEF write into DDRAM
setmem /16 0x80000000 =0xDEAD
setmem /16 0x80000002 =0xBEEF

// ldr r1, =0xFF80051C	  /* HCLK=52MHz, IPG=52MHz */
// str r1, [r0, #CRM_MCU_MPDR0]
setmem /32  0x53F80004 =0xFF80051C


// This is to turn on the secret bit for BE access to CPLD
//setmem /32 0x50030030 =0x00020000

// CS0 setup
setmem /32 0xB8002000 =0x0000D346
setmem /32 0xB8002004 =0x444A4D21
setmem /32 0xB8002008 =0x44443302
// CS4 setup
setmem /32 0xB8002040 =0x0000DCF6
setmem /32 0xB8002044 =0x444A4541
setmem /32 0xB8002048 =0x44443302

setmem /32 0x5001C808 =0x00000000   // Set DSP to LE
setmem /32 0x43F84024 =0x00000010   // Put DSP in reset
pause 1
setmem /32 0x43F84024 =0x00000000   // Put DSP out of reset

setreg @CPSR_FLGE=0x00

readfile,raw,gui "r:\tftp\mxc30030evb_redboot.bin"=0x83F00000
setreg @R15=0x83F00000