How to program both flash banks - AT91SAM3U4 (Cortex-M3)

Development Boards MicroMod
1

Hi all,

I am using the AT91SAM3U4 (Cortex-M3) controller with 2 flash banks in it.

At first, my binary file fits in the first flash bank of 128kByte. With the (part) script/cfg file below, I was able to program the binary:

set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME at91sam3 0x000080000 0 1 1 $_TARGETNAME
# This is a 256K chip - it has the 2nd bank
#set _FLASHNAME $_CHIPNAME.flash
#flash bank $_FLASHNAME at91sam3 0x000100000 0 1 1 $_TARGETNAME

flash banks

init
reset
halt

flash erase_sector 0 0 last
flash write_bank 0 at91sam3u4_flash.bin 0

Now, my code size needs both flash banks. How must I change my script/cfg file? The script below results in an error.

set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME at91sam3 0x000080000 0 1 1 $_TARGETNAME
# This is a 256K chip - it has the 2nd bank
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME at91sam3 0x000100000 0 1 1 $_TARGETNAME

flash banks

init
reset
halt

flash erase_sector 0 0 last
flash erase_sector 1 0 last
flash write_bank 0 at91sam3u4_flash.bin 0
flash write_bank 1 at91sam3u4_flash.bin 0

The error is at the end of the command window, after erasing the 2 flash banks:

erased sectors 0 through 15 on flash bank 0 in 0.104000s
erased sectors 0 through 15 on flash bank 1 in 0.136000s
Error: Flash write error - past end of bank
Error:  offset: 0x00000000, count 0x00022b8c, BankEnd: 0x00020000
Error: error writing to flash at address 0x00080000 at offset 0x00000000 (-4)
Command handler execution failed

What is wrong, who can help me?

2

Hi,

You could split your bin file in two and program them separately.

Regards, T.

p.s. Could you post your openocd config file?

3

Hi,

Thanks for your answer. Here is my total config file.

But is there no possibility to program the bin file at once?

# common stuff
# script for ATMEL sam3, a CORTEX-M3 chip
#
#  at91sam3u4e
#  at91sam3u2e
#  at91sam3u1e
#  at91sam3u4c
#  at91sam3u2c
#  at91sam3u1c

if { [info exists CHIPNAME] } {
   set  _CHIPNAME $CHIPNAME
} else {
   set  _CHIPNAME sam3
}

if { [info exists ENDIAN] } {
   set  _ENDIAN $ENDIAN
} else {
   set  _ENDIAN little
}


#jtag scan chain
if { [info exists CPUTAPID ] } {
   set _CPUTAPID $CPUTAPID
} else {
   set _CPUTAPID 0x4ba00477
}

#
# Amontec JTAGkey
#
# http://www.amontec.com/jtagkey.shtml
#

interface ft2232
ft2232_device_desc "Amontec JTAGkey"
ft2232_layout jtagkey
ft2232_vid_pid 0x0403 0xcff8
jtag_khz 200 



#tcl_port 6666
#telnet_port 4444
#gdb_port 3333

#interface ft2232
#ft2232_device_desc "Amontec JTAGkey A"
#ft2232_layout jtagkey
#ft2232_vid_pid 0x0403 0xcff8
#jtag_khz 30 

#jtag_nsrst_delay 200
#jtag_ntrst_delay 200

#reset_config srst_only srst_pulls_trst


jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position $_TARGETNAME

# 16K is plenty, the smallest chip has this much
$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 16384 -work-area-backup 0

$_TARGETNAME configure -event gdb-flash-erase-start {
    halt
}

# size is automatically "calculated" by probing
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME at91sam3 0x000080000 0 1 1 $_TARGETNAME
# This is a 256K chip - it has the 2nd bank
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME at91sam3 0x000100000 0 1 1 $_TARGETNAME

flash banks

init
reset
halt

flash erase_sector 0 0 last
flash erase_sector 1 0 last
flash write_bank 0 at91sam3u4_flash.bin 0
flash write_bank 1 at91sam3u4_flash.bin 0

shutdown