Makefile: Add support for per-board symlinks to top level

Previously if you were working on a single board you had to add BOARD=
to all of your make command lines.  Now if you are in a board directory
you can just use "make", or "make clean", or any other top level make
command.

This commit also adds support for a top level "make flash" command that
can be used from the board directories as well.  This command uses
openocd and requires that the board provides an openocd-flash.cfg file.

Signed-off-by: Anton Staaf <robotboy@chromium.org>

BRANCH=none
TEST=(from a few board directories) make clean; make -j
     (from the discovery-stm32f072 directory) make flash

Change-Id: Ie09a74881371169a2c3cd9cd9922f39f4873f1a6
Reviewed-on: https://chromium-review.googlesource.com/209669
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>

29 files changed, 43 insertions, 20 deletions

diff --git a/board/bds/Makefile b/board/bds/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/bds/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/big/Makefile b/board/big/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/big/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/discovery-stm32f072/Makefile b/board/discovery-stm32f072/Makefile
index 20874220b1..94aaae2c4d 100644..120000
--- a/board/discovery-stm32f072/Makefile
+++ b/board/discovery-stm32f072/Makefile
@@ -1,20 +1 @@
-# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-#
-# Simple flashing command to reflash the discovery board using openocd
-#
-.PHONY: flash
-
-flash:
-	sudo openocd -f board/stm32f0discovery.cfg \
-		-c "gdb_port 0" \
-		-c "tcl_port 0" \
-		-c "telnet_port 0" \
-		-c "init" \
-		-c "reset init" \
-		-c "flash write_image erase ../../build/discovery-stm32f072/ec.bin 0x08000000" \
-		-c "reset halt" \
-		-c "resume" \
-		-c "shutdown"
+../../Makefile
\ No newline at end of file
diff --git a/board/discovery-stm32f072/openocd-flash.cfg b/board/discovery-stm32f072/openocd-flash.cfg
new file mode 100644
index 0000000000..eed8d03f36
--- /dev/null
+++ b/board/discovery-stm32f072/openocd-flash.cfg
@@ -0,0 +1,15 @@
+# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source [find board/stm32f0discovery.cfg]
+
+gdb_port 0
+tcl_port 0
+telnet_port 0
+init
+reset init
+flash write_image erase $BUILD_DIR/ec.bin 0x08000000
+reset halt
+resume
+shutdown
diff --git a/board/discovery/Makefile b/board/discovery/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/discovery/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/falco/Makefile b/board/falco/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/falco/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/firefly/Makefile b/board/firefly/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/firefly/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/fruitpie/Makefile b/board/fruitpie/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/fruitpie/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/hadoken/Makefile b/board/hadoken/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/hadoken/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/host/Makefile b/board/host/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/host/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/it8380dev/Makefile b/board/it8380dev/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/it8380dev/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/keyborg/Makefile b/board/keyborg/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/keyborg/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/link/Makefile b/board/link/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/link/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/mccroskey/Makefile b/board/mccroskey/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/mccroskey/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/mec1322_evb/Makefile b/board/mec1322_evb/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/mec1322_evb/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/nyan/Makefile b/board/nyan/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/nyan/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/peppy/Makefile b/board/peppy/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/peppy/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/pit/Makefile b/board/pit/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/pit/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/plankton/Makefile b/board/plankton/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/plankton/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/rambi/Makefile b/board/rambi/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/rambi/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/ryu/Makefile b/board/ryu/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/ryu/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/samus/Makefile b/board/samus/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/samus/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/samus_pd/Makefile b/board/samus_pd/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/samus_pd/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/snow/Makefile b/board/snow/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/snow/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/spring/Makefile b/board/spring/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/spring/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/squawks/Makefile b/board/squawks/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/squawks/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/twinkie/Makefile b/board/twinkie/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/twinkie/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/veyron/Makefile b/board/veyron/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/veyron/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/zinger/Makefile b/board/zinger/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/zinger/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file