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# imx31 config
#
reset_config trst_and_srst
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME imx31
}
if { [info exists ENDIAN] } {
set _ENDIAN $ENDIAN
} else {
set _ENDIAN little
}
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
set _CPUTAPID 0x07b3601d
}
if { [info exists SDMATAPID ] } {
set _SDMATAPID $SDMATAPID
} else {
set _SDMATAPID 0x2190101d
}
#========================================
# The "system jtag controller"
# IMX31 reference manual, page 6-28 - figure 6-14
if { [info exists SJCTAPID ] } {
set _SJCTAPID $SJCTAPID
} else {
set _SJCTAPID 0x2b900f0f
}
jtag newtap $_CHIPNAME sjc -irlen 4 -ircapture 0x0 -irmask 0x0 -expected-id $_SJCTAPID
# The "SDMA" - <S>mart <DMA> controller debug tap
# Based on some IO pins - this can be disabled & removed
# See diagram: 6-14
# SIGNAL NAME:
# SJC_MOD - controls multiplexer - disables ARM1136
# SDMA_BYPASS - disables SDMA -
#
# Per ARM: DDI0211J_arm1136_r1p5_trm.pdf - the ARM 1136 as a 5 bit IR register
jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUTAPID
# No IDCODE for this TAP
jtag newtap $_CHIPNAME whatchacallit -irlen 4 -ircapture 0 -irmask 0xf -expected-id 0x0
# Per section 40.17.1, table 40-85 the IR register is 4 bits
# But this conflicts with Diagram 6-13, "3bits ir and drs"
jtag newtap $_CHIPNAME smda -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_SDMATAPID
set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
target create $_TARGETNAME arm11 -endian $_ENDIAN -chain-position $_TARGETNAME
proc power_restore {} { puts "Sensed power restore. No action." }
proc srst_deasserted {} { puts "Sensed nSRST deasserted. No action." }
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