board: add configuration for freescale imx6q sabresd board

This configuration file contains jtag, reset and init functions
for the Freescale SabreSD board variant with iMX6Q SoC.

Change-Id: I2366af6da1d82550eb485f36ad61469305c59ffb
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/3357
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>

diff --git a/tcl/board/fsl_imx6q_sabresd.cfg b/tcl/board/fsl_imx6q_sabresd.cfg
new file mode 100644 (file)
index 0000000..797e2de
--- /dev/null
+++ b/tcl/board/fsl_imx6q_sabresd.cfg
@@ -0,0 +1,149 @@
+#
+# 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_nsrst_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 }
+# make sure target is halted when gdb attaches
+$_TARGETNAME.0 configure -event gdb-attach { halt }
+# set a slow default JTAG clock, can be overridden later
+adapter_khz 1000