telnet_port 4444
gdb_port 3333
#interface
interface ft2232
ft2232_device_desc "Amontec JTAGkey A"
ft2232_layout jtagkey
ft2232_vid_pid 0x0403 0xcff8
jtag_speed 3
jtag_nsrst_delay 200
#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config srst_only srst_pulls_trst
#jtag scan chain
#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
jtag_device 4 0x1 0xf 0xe
#target configuration
daemon_startup reset
#target arm7tdmi
target arm7tdmi little run_and_init 0 arm7tdmi-s_r4
# run_and_halt_time
run_and_halt_time 0 1000
# commands below are specific to arm7tdmi Flash Programming
# −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
#target_script specifies the flash programming script file
target_script 0 reset openocd_lpc2294_flash.sh
#working_area <'backup'|'nobackup'>
#flash configuration
#flash bank lpc2000 0x0 0x40000 0 0 0 lpc2000_v1 0 14765 calc_checksum
flash bank lpc2000 0x0 0x40000 0 0 0 lpc2000_v1 10000 calc_checksum
Flash write script (openocd_lpc2294_flash.sh):
arm7_9 dcc_downloads enable
wait_halt
sleep 10
poll
flash probe 0
# erase first bank only:
flash erase_sector 0 0 0
#load_binary main.bin 0x0
flash write_image main.bin 0x0
poll
sleep 10
reset run
sleep 10
shutdown
resume
Using the flash write_image did the trick for me. I read it in some post that when you use flash write_image then the calc_checksum in the
flash bank lpc2000 0x0 0x40000 0 0 0 lpc2000_v1 0 10000 calc_checksum
works.
If not programmed with calc_checksum enable, a valid crc wouldn't be put in the exception vector table and the program would not get pass the bootloader.
