riscv-openocd/tcl/board/at91rm9200-dk.cfg

# SPDX-License-Identifier: GPL-2.0-or-later

#
# This is for the "at91rm9200-DK" (not the EK) eval board.
#
# The two are probably very simular.... I have DK...
#
# It has atmel at91rm9200 chip.
source [find target/at91rm9200.cfg]

reset_config trst_and_srst

$_TARGETNAME configure -event gdb-attach { reset init }
$_TARGETNAME configure -event reset-init { at91rm9200_dk_init }

#flash bank <name> <driver> <base> <size> <chip_width> <bus_width> <target>
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME cfi 0x10000000 0x00200000 2 2 $_TARGETNAME


proc at91rm9200_dk_init { } {
    # Try to run at 1khz... Yea, that slow!
    # Chip is really running @ 32khz
    adapter speed 8

    mww 0xfffffc64 0xffffffff
    ##  disable all clocks but system clock
    mww 0xfffffc04 0xfffffffe
    ##  disable all clocks to pioa and piob
    mww 0xfffffc14 0xffffffc3
    ##  master clock = slow cpu = slow
    ##  (means the CPU is running at 32khz!)
    mww 0xfffffc30 0
    ##  main osc enable
    mww 0xfffffc20 0x0000ff01
    ##  program pllA
    mww 0xfffffc28 0x20263e04
    ##  program pllB
    mww 0xfffffc2c 0x10483e0e
    ##  let pll settle... sleep 100msec
    sleep 100
    ##  switch to fast clock
    mww 0xfffffc30 0x202
    ## Sleep some - (go read)
    sleep 100

    #========================================
    # CPU now runs at 180mhz
    # SYS runs at 60mhz.
    adapter speed 40000
    #========================================


    ##  set memc for all memories
    mww 0xffffff60 0x02
    ##  program smc controller
    mww 0xffffff70 0x3284
    ##  init sdram
    mww 0xffffff98 0x7fffffd0
    ##  all banks precharge
    mww 0xffffff80 0x02
    ##  touch sdram chip to make it work
    mww 0x20000000 0
    ##  sdram controller mode register
    mww 0xffffff90 0x04
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    mww 0x20000000 0
    ##  sdram controller mode register
    ##  Refresh, etc....
    mww 0xffffff90 0x03
    mww 0x20000080 0
    mww 0xffffff94 0x1f4
    mww 0x20000080 0
    mww 0xffffff90 0x10
    mww 0x20000000 0
    mww 0xffffff00 0x01

}