at91sam9260.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.

# Thanks to Pieter Conradie for this script! 
# Target:    Atmel AT91SAM9260
######################################

reset_config trst_and_srst

#jtag_device <IR length> <IR capture> <IR mask> <IDCODE instruction>
jtag_device 4 0x1 0xf 0xe

jtag_nsrst_delay 200
jtag_ntrst_delay 0

######################
# Target configuration
######################

target create target0 arm926ejs -endian little -chain-position 0 -variant arm926ejs

[new_target_name] configure -event reset-init {
	mww 0xfffffd08 0xa5000501         # RSTC_MR : enable user reset
	mww 0xfffffd44 0x00008000         # WDT_MR : disable watchdog

	mww 0xfffffc20 0x00004001         # CKGR_MOR : enable the main oscillator
	sleep 20                          # wait 20 ms
	mww 0xfffffc30 0x00000001         # PMC_MCKR : switch to main oscillator
	sleep 10                          # wait 10 ms
	mww 0xfffffc28 0x2060bf09         # CKGR_PLLAR: Set PLLA Register for 198,656MHz
	sleep 20                          # wait 20 ms
	mww 0xfffffc30 0x00000101         # PMC_MCKR : Select prescaler
	sleep 10                          # wait 10 ms
	mww 0xfffffc30 0x00000102         # PMC_MCKR : Clock from PLLA is selected
	sleep 10                          # wait 10 ms

	jtag_speed 0                      # Increase JTAG Speed to 6 MHz
	arm7_9 dcc_downloads enable       # Enable faster DCC downloads

	mww 0xffffec00 0x01020102         # SMC_SETUP0 : Setup SMC for Intel NOR Flash JS28F128P30T85 128MBit
	mww 0xffffec04 0x09070806         # SMC_PULSE0
	mww 0xffffec08 0x000d000b         # SMC_CYCLE0
	mww 0xffffec0c 0x00001003         # SMC_MODE0

	flash probe 0                     # Identify flash bank 0

	mww 0xfffff870 0xffff0000         # PIO_ASR : Select peripheral function for D15..D31
	mww 0xfffff804 0xffff0000         # PIO_PDR : Disable PIO function for D15..D31

	mww 0xffffef1c 0x2                # EBI_CSA : Assign EBI Chip Select 1 to SDRAM

	#mww 0xffffea08 0x85227259         # SDRAMC_CR : Configure SDRAM (2 x Samsung K4S561632H-UC75 : 4M x 16Bit x 4 Banks)
	mww 0xffffea08 0x85227254         # SDRAMC_CR : Configure SDRAM (2 x Samsung K4S641632H-UC75 : 1M x 16Bit x 4 Banks)

	mww 0xffffea00 0x1                # SDRAMC_MR : issue a NOP command
	mww 0x20000000 0
	mww 0xffffea00 0x2                # SDRAMC_MR : issue an 'All Banks Precharge' command
	mww 0x20000000 0
	mww 0xffffea00 0x4                # SDRAMC_MR : issue 8 x 'Auto-Refresh' Command
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x4
	mww 0x20000000 0
	mww 0xffffea00 0x3                # SDRAMC_MR : issue a 'Load Mode Register' command
	mww 0x20000000 0
	mww 0xffffea00 0x0                # SDRAMC_MR : normal mode
	mww 0x20000000 0
	mww 0xffffea04 0x5d2              # SDRAMC_TR : Set refresh timer count to 15us
}

[new_target_name] configure -work-area-virt 0 -work-area-phys 0x00300000 -work-area-size 0x1000 -work-area-backup 1

#####################
# Flash configuration
#####################

#flash bank cfi <base> <size> <chip width> <bus width> <target#>
flash bank cfi 0x10000000 0x01000000 2 2 0