Commit 8b41812d authored by Øyvind Harboe's avatar Øyvind Harboe
Browse files

lpc2148: redo to the new target configuration scheme



Define a proc which PCBs can easily override.

Also demonstrates how to add multiple TAP exepcted-id's
using arguments.

Added 0x3f0f0f0f as expected TAP-id. Old LPC2148 silicon
I happened to have on my desk?

Signed-off-by: default avatarØyvind Harboe <oyvind.harboe@zylin.com>
parent e03f45f6
# Use RCLK. If RCLK is not available fall back to 500kHz.
#
# Depending on cabling you might be able to eek this up to 2000kHz.
jtag_rclk 500
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME lpc2148
}
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
set _CPUTAPID 0x4f1f0f0f
# Proc that can be invoked to create a special version of
# the LPC2148
proc setup_lpc2148 {chipname tapids} {
# Use RCLK. If RCLK is not available fall back to 500kHz.
#
# Depending on cabling you might be able to eek this up to 2000kHz.
jtag_rclk 500
adapter_nsrst_delay 200
jtag_ntrst_delay 200
# NOTE!!! LPCs need reset pulled while RTCK is low. 0 to activate
# JTAG, power-on reset is not enough, i.e. you need to perform a
# reset before being able to talk to the LPC2148, attach is not possible.
reset_config trst_and_srst
eval "jtag newtap $chipname cpu -irlen 4 -ircapture 0x1 -irmask 0xf $tapids"
target create $chipname.cpu arm7tdmi -chain-position $chipname.cpu
$chipname.cpu configure -work-area-phys 0x40000000 -work-area-size 0x4000 -work-area-backup 0
$chipname.cpu configure -event reset-init {
# Force target into ARM state
arm core_state arm
# Do not remap 0x0000-0x0020 to anything but the flash (i.e. select
# "User Flash Mode" where interrupt vectors are _not_ remapped,
# and reside in flash instead).
#
# See section 7.1 on page 32 ("Memory Mapping control register") in
# "UM10139: Volume 1: LPC214x User Manual", Rev. 02 -- 25 July 2006.
# http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/user.manual.lpc2141.lpc2142.lpc2144.lpc2146.lpc2148.pdf
mwb 0xE01FC040 0x01
}
# flash bank <name> lpc2000 <base> <size> 0 0 <target#> <variant> <clock> [calc checksum]
flash bank $chipname.flash lpc2000 0x0 0x7d000 0 0 $chipname.cpu lpc2000_v2 14765 calc_checksum
}
adapter_nsrst_delay 200
jtag_ntrst_delay 200
# NOTE!!! LPCs need reset pulled while RTCK is low. 0 to activate
# JTAG, power-on reset is not enough, i.e. you need to perform a
# reset before being able to talk to the LPC2148, attach is not possible.
reset_config trst_and_srst
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME arm7tdmi -chain-position $_TARGETNAME
$_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x4000 -work-area-backup 0
$_TARGETNAME configure -event reset-init {
# Force target into ARM state
arm core_state arm
# Do not remap 0x0000-0x0020 to anything but the flash (i.e. select
# "User Flash Mode" where interrupt vectors are _not_ remapped,
# and reside in flash instead).
#
# See section 7.1 on page 32 ("Memory Mapping control register") in
# "UM10139: Volume 1: LPC214x User Manual", Rev. 02 -- 25 July 2006.
# http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/user.manual.lpc2141.lpc2142.lpc2144.lpc2146.lpc2148.pdf
mwb 0xE01FC040 0x01
# Default settings
proc init_targets {} {
setup_lpc2148 lpc2148 "-expected-id 0x3f0f0f0f -expected-id 0x4f1f0f0f"
}
# flash bank <name> lpc2000 <base> <size> 0 0 <target#> <variant> <clock> [calc checksum]
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME lpc2000 0x0 0x7d000 0 0 $_TARGETNAME lpc2000_v2 14765 calc_checksum
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment