eir-sam7se512.cfg

openocd是比较好的调试工具软件,支持wiggle调试arm,也支持其他调试接口,例如USB口的FT2232.

#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 create target0 arm7tdmi -endian little -chain-position 0 -variant arm7tdmi


[new_target_name] configure -event reset-init {
	# WDT_MR, disable watchdog 
	mww 0xFFFFFD44 0x00008000

	# RSTC_MR, enable user reset
	mww 0xfffffd08 0xa5000001

	# CKGR_MOR
	mww 0xFFFFFC20 0x00000601
	sleep 10

	# CKGR_PLLR
	mww 0xFFFFFC2C 0x00481c0e
	sleep 10

	# PMC_MCKR
	mww 0xFFFFFC30 0x00000007
	sleep 10

	# PMC_IER
	mww 0xFFFFFF60 0x00480100

	#
	# Enable SDRAM interface.
	#

	# Enable SDRAM control at PIO A.
	mww 0xfffff474 0x3f800000 # PIO_BSR_OFF
	mww 0xfffff404 0x3f800000 # PIO_PDR_OFF

	# Enable address bus (A0, A2-A11, A13-A17) at PIO B
	mww 0xfffff674 0x0003effd # PIO_BSR_OFF
	mww 0xfffff604 0x0003effd # PIO_PDR_OFF

	# Enable 16 bit data bus at PIO C
	mww 0xfffff870 0x0000ffff # PIO_ASR_OFF
	mww 0xfffff804 0x0000ffff # PIO_PDR_OFF

	# Enable SDRAM chip select
	mww 0xffffff80 0x00000002 # EBI_CSA_OFF

	# Set SDRAM characteristics in configuration register.
	# Hard coded values for MT48LC32M16A2 with 48MHz CPU.
	mww 0xffffffb8 0x2192215a # SDRAMC_CR_OFF
	sleep 10

	# Issue 16 bit SDRAM command: NOP
	mww 0xffffffb0 0x00000011 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 

	# Issue 16 bit SDRAM command: Precharge all
	mww 0xffffffb0 0x00000012 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 

	# Issue 8 auto-refresh cycles
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 
	mww 0xffffffb0 0x00000014 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000000 

	# Issue 16 bit SDRAM command: Set mode register  
	mww 0xffffffb0 0x00000013 # SDRAMC_MR_OFF
	mww 0x20000014 0xcafedede

	# Set refresh rate count ???
	mww 0xffffffb4 0x00000013 # SDRAMC_TR_OFF

	# Issue 16 bit SDRAM command: Normal mode
	mww 0xffffffb0 0x00000010 # SDRAMC_MR_OFF
	mww 0x20000000 0x00000180

	#
	# Enable external reset key.
	#
	mww 0xfffffd08 0xa5000001
}

[new_target_name] configure -work-area-virt 0 -work-area-phys 0x00200000 -work-area-size 0x4000 -work-area-backup 0

#flash bank <driver> <base> <size> <chip_width> <bus_width>
flash bank at91sam7 0 0 0 0 0

# For more information about the configuration files, take a 
# look at the "Open On-Chip Debugger (openocd)" documentation.