# Main file for Ameba1 series Cortex-M3 parts
#
# !!!!!!
#

set CHIPNAME rtl8195a
set CHIPSERIES ameba1

# Adapt based on what transport is active.
source [find target/swj-dp.tcl]

if { [info exists CHIPNAME] } {
	set _CHIPNAME $CHIPNAME
} else {
	error "CHIPNAME not set. Please do not include ameba1.cfg directly."
}

if { [info exists CHIPSERIES] } {
	# Validate chip series is supported
	if { $CHIPSERIES != "ameba1" } {
		error "Unsupported chip series specified."
	}
	set _CHIPSERIES $CHIPSERIES
} else {
	error "CHIPSERIES not set. Please do not include ameba1.cfg directly."
}

if { [info exists CPUTAPID] } {
	# Allow user override
	set _CPUTAPID $CPUTAPID
} else {
	# Ameba1 use a Cortex M3 core.
	if { $_CHIPSERIES == "ameba1" } {
		if { [using_jtag] } {
			set _CPUTAPID 0x4ba00477
		} {
			set _CPUTAPID 0x2ba01477
		}
	}
}

swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME


# Run with *real slow* clock by default since the
# boot rom could have been playing with the PLL, so
# we have no idea what clock the target is running at.
adapter_khz 2000

# delays on reset lines
adapter_nsrst_delay 200
if {[using_jtag]} {
 jtag_ntrst_delay 200
}


# Ameba1 (Cortex M3 core) support SYSRESETREQ
if {![using_hla]} {
    # if srst is not fitted use SYSRESETREQ to
    # perform a soft reset
    cortex_m reset_config sysresetreq
}

$_TARGETNAME configure -event reset-init {ameba1_init}

# Ameba1 SDRAM enable
proc ameba1_init { } {
	# init System
	mww 0x40000014 0x00000021
	sleep 10
	mww	0x40000304 0x1fc00002
	sleep 10
	mww 0x40000250 0x00000400
	sleep 10
	mww 0x40000340 0x00000000
	sleep 10
	mww 0x40000230 0x0000dcc4
	sleep 10
	mww 0x40000210 0x00011117
	sleep 10
	mww 0x40000210 0x00011157
	sleep 10
	mww 0x400002c0 0x00110011
	sleep 10
	mww 0x40000320 0xffffffff
	sleep 10
	# init SDRAM
	mww 0x40000040 0x00fcc702
	sleep 10
	mdw 0x40000040
	mww 0x40005224 0x00000001
	sleep 10
	mww 0x40005004 0x00000208
	sleep 10
	mww 0x40005008 0xffffd000
	sleep 13
	mww 0x40005020 0x00000022
	sleep 13
	mww 0x40005010 0x09006201
	sleep 13
	mww 0x40005014 0x00002611
	sleep 13
	mww 0x40005018 0x00068413
	sleep 13
	mww 0x4000501c 0x00000042
	sleep 13
	mww 0x4000500c 0x700 		;# set Idle
	sleep 20
	mww 0x40005000 0x1 			;# start init
	sleep 100
	mdw 0x40005000			
	mww 0x4000500c 0x600		;# enter memory mode
	sleep 30

	mww 0x40005008 0x00000000	;# 0xf00
	;# mww 0x40005008 0x00000f00
	sleep 3
	mww 0x40000300 0x0006005e	;# 0x5e
	;# mww 0x40000300 0x0000005e
	sleep 3
}