From 7faf26cbac40b6617b1de7ed235240538db439a2 Mon Sep 17 00:00:00 2001
From: Berkus Decker <berkus+github@metta.systems>
Date: Fri, 1 Feb 2019 10:15:44 +0200
Subject: [PATCH] Add revision 1 of openocd configs - not working

---
 doc/rpi3_interface.cfg | 20 ++++++++++++++++++++
 doc/rpi3_target.cfg    | 25 +++++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 doc/rpi3_interface.cfg
 create mode 100644 doc/rpi3_target.cfg

diff --git a/doc/rpi3_interface.cfg b/doc/rpi3_interface.cfg
new file mode 100644
index 0000000..42e3e80
--- /dev/null
+++ b/doc/rpi3_interface.cfg
@@ -0,0 +1,20 @@
+# Broadcom 2835 on Raspberry Pi as JTAG host
+
+interface bcm2835gpio
+
+bcm2835gpio_peripheral_base 0x3F000000
+
+# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
+# These depend on system clock, calibrated for stock 700MHz
+# bcm2835gpio_speed SPEED_COEFF SPEED_OFFSET
+bcm2835gpio_speed_coeffs 146203 36
+
+# Each of the JTAG lines need a gpio number set: tck tms tdi tdo
+# Header pin numbers: 23 22 19 21
+bcm2835gpio_jtag_nums 11 25 10 9
+
+# If you define trst or srst, use appropriate reset_config
+# Header pin numbers: TRST - 26, SRST - 12
+
+bcm2835gpio_trst_num 7
+reset_config trst_only
diff --git a/doc/rpi3_target.cfg b/doc/rpi3_target.cfg
new file mode 100644
index 0000000..3195679
--- /dev/null
+++ b/doc/rpi3_target.cfg
@@ -0,0 +1,25 @@
+# Broadcom 2835 on Raspberry Pi as JTAG target
+
+telnet_port 4444
+gdb_port 5555
+
+adapter_khz 1000
+transport select jtag
+
+if { [info exists CHIPNAME] } {
+set _CHIPNAME $CHIPNAME
+} else {
+set _CHIPNAME rspi
+}
+
+if { [info exists CPU_TAPID ] } {
+set _CPU_TAPID $CPU_TAPID
+} else {
+set _CPU_TAPID 0x07b7617F
+}
+
+jtag newtap $_CHIPNAME arm -irlen 5 -expected-id $_CPU_TAPID
+
+set _TARGETNAME $_CHIPNAME.arm
+target create $_TARGETNAME arm11 -chain-position $_TARGETNAME
+$_TARGETNAME configure -event gdb-attach { halt }