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

#
# Board configuration file for the Freescale IMX6Q Sabre SD EVM
#
# This board does not have an embedded JTAG adapter, you must source
# a suitable adapter configuration before sourcing this file.

# Sabre SD has a standard ARM-20 JTAG connector with
# nTRST and nSRST available.
reset_config trst_and_srst

# the only possible transport is JTAG
transport select jtag

# iMX6Q POR gates JTAG and the chip is completely incommunicado
# over JTAG for at least 10ms after nSRST is deasserted
adapter srst delay 11

# Source generic iMX6Q target configuration
set CHIPNAME imx6q
source [find target/imx6.cfg]

# function to apply initial configuration after a reset. It
# provides a basic pad configuration and also DDR memory and clocks
# sufficient to load and execute a boot loader (e.g. barebox) from
# DDR memory. This list is extracted from the barebox flash image
# header.
proc apply_dcd { } {
	mww 0x020e05a8 0x00000030
	mww 0x020e05b0 0x00000030
	mww 0x020e0524 0x00000030
	mww 0x020e051c 0x00000030
	mww 0x020e0518 0x00000030
	mww 0x020e050c 0x00000030
	mww 0x020e05b8 0x00000030
	mww 0x020e05c0 0x00000030
	mww 0x020e05ac 0x00020030
	mww 0x020e05b4 0x00020030
	mww 0x020e0528 0x00020030
	mww 0x020e0520 0x00020030
	mww 0x020e0514 0x00020030
	mww 0x020e0510 0x00020030
	mww 0x020e05bc 0x00020030
	mww 0x020e05c4 0x00020030
	mww 0x020e056c 0x00020030
	mww 0x020e0578 0x00020030
	mww 0x020e0588 0x00020030
	mww 0x020e0594 0x00020030
	mww 0x020e057c 0x00020030
	mww 0x020e0590 0x00003000
	mww 0x020e0598 0x00003000
	mww 0x020e058c 0x00000000
	mww 0x020e059c 0x00003030
	mww 0x020e05a0 0x00003030
	mww 0x020e0784 0x00000030
	mww 0x020e0788 0x00000030
	mww 0x020e0794 0x00000030
	mww 0x020e079c 0x00000030
	mww 0x020e07a0 0x00000030
	mww 0x020e07a4 0x00000030
	mww 0x020e07a8 0x00000030
	mww 0x020e0748 0x00000030
	mww 0x020e074c 0x00000030
	mww 0x020e0750 0x00020000
	mww 0x020e0758 0x00000000
	mww 0x020e0774 0x00020000
	mww 0x020e078c 0x00000030
	mww 0x020e0798 0x000c0000
	mww 0x021b081c 0x33333333
	mww 0x021b0820 0x33333333
	mww 0x021b0824 0x33333333
	mww 0x021b0828 0x33333333
	mww 0x021b481c 0x33333333
	mww 0x021b4820 0x33333333
	mww 0x021b4824 0x33333333
	mww 0x021b4828 0x33333333
	mww 0x021b0018 0x00081740
	mww 0x021b001c 0x00008000
	mww 0x021b000c 0x555a7975
	mww 0x021b0010 0xff538e64
	mww 0x021b0014 0x01ff00db
	mww 0x021b002c 0x000026d2
	mww 0x021b0030 0x005b0e21
	mww 0x021b0008 0x09444040
	mww 0x021b0004 0x00025576
	mww 0x021b0040 0x00000027
	mww 0x021b0000 0x831a0000
	mww 0x021b001c 0x04088032
	mww 0x021b001c 0x0408803a
	mww 0x021b001c 0x00008033
	mww 0x021b001c 0x0000803b
	mww 0x021b001c 0x00428031
	mww 0x021b001c 0x00428039
	mww 0x021b001c 0x09408030
	mww 0x021b001c 0x09408038
	mww 0x021b001c 0x04008040
	mww 0x021b001c 0x04008048
	mww 0x021b0800 0xa1380003
	mww 0x021b4800 0xa1380003
	mww 0x021b0020 0x00005800
	mww 0x021b0818 0x00022227
	mww 0x021b4818 0x00022227
	mww 0x021b083c 0x434b0350
	mww 0x021b0840 0x034c0359
	mww 0x021b483c 0x434b0350
	mww 0x021b4840 0x03650348
	mww 0x021b0848 0x4436383b
	mww 0x021b4848 0x39393341
	mww 0x021b0850 0x35373933
	mww 0x021b4850 0x48254A36
	mww 0x021b080c 0x001f001f
	mww 0x021b0810 0x001f001f
	mww 0x021b480c 0x00440044
	mww 0x021b4810 0x00440044
	mww 0x021b08b8 0x00000800
	mww 0x021b48b8 0x00000800
	mww 0x021b001c 0x00000000
	mww 0x021b0404 0x00011006
	mww 0x020c4068 0x00c03f3f
	mww 0x020c406c 0x0030fc03
	mww 0x020c4070 0x0fffc000
	mww 0x020c4074 0x3ff00000
	mww 0x020c4078 0x00fff300
	mww 0x020c407c 0x0f0000c3
	mww 0x020c4080 0x000003ff
	mww 0x020e0010 0xf00000cf
	mww 0x020e0018 0x007f007f
	mww 0x020e001c 0x007f007f
}

# disable watchdog
proc disable_wdog { } {
	mwh 0x020bc000 0x30
}

# This function applies the initial configuration after a "reset init"
# command
proc imx6q_sabresd_init { } {
	disable_wdog
	apply_dcd
}

# prevent cortex-a code from asserting SRST again
$_TARGETNAME.0 configure -event reset-assert { }
# hook the init function into the reset-init event
$_TARGETNAME.0 configure -event reset-init { imx6q_sabresd_init }
# set a slow default JTAG clock, can be overridden later
adapter speed 1000
