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# Freescale i.MX6 series single/dual/quad core processor
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME imx6
}
# CoreSight Debug Access Port
if { [info exists DAP_TAPID] } {
set _DAP_TAPID $DAP_TAPID
} else {
set _DAP_TAPID 0x4ba00477
}
jtag newtap $_CHIPNAME dap -irlen 4 -ircapture 0x01 -irmask 0x0f \
-expected-id $_DAP_TAPID
# SDMA / no IDCODE
jtag newtap $_CHIPNAME sdma -irlen 4 -ircapture 0x00 -irmask 0x0f
# System JTAG Controller
if { [info exists SJC_TAPID] } {
set _SJC_TAPID SJC_TAPID
} else {
set _SJC_TAPID 0x0191c01d
}
set _SJC_TAPID2 0x2191c01d
jtag newtap $_CHIPNAME sjc -irlen 5 -ircapture 0x01 -irmask 0x1f \
-expected-id $_SJC_TAPID -expected-id $_SJC_TAPID2
# GDB target: Cortex-A9, using DAP, configuring only one core
# Base addresses of cores:
# core 0 - 0x82150000
# core 1 - 0x82152000
# core 2 - 0x82154000
# core 3 - 0x82156000
set _TARGETNAME $_CHIPNAME.cpu.0
target create $_TARGETNAME cortex_a8 -chain-position $_CHIPNAME.dap \
-coreid 0 -dbgbase 0x82150000
# some TCK cycles are required to activate the DEBUG power domain
jtag configure $_CHIPNAME.sjc -event post-reset "runtest 100"
proc imx6_dbginit {target} {
# General Cortex A8/A9 debug initialisation
cortex_a8 dbginit
}
# Slow speed to be sure it will work
jtag_rclk 1000
$_TARGETNAME configure -event reset-start { jtag_rclk 1000 }
$_TARGETNAME configure -event reset-assert-post "imx6_dbginit $_TARGETNAME"
$_TARGETNAME configure -event gdb-attach { halt }
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