[ptxdist] [PATCH v2] bare_metal: add libopencm3 support

[Michael Grzeschik <m.grzeschik@pengutronix.de>]

This patch adds support for the libopencm3 for bare metal
systems. With this library it is possible to build single
applications for cortexm3 companion systems, that
needs to be deployed with the bsp.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
---
v1 -> v2
- fixed description from "stellaris" to "cm3"
- used LIBOPENCM3_MAKE_OPT/_INSTALL_OPT where possible
- expanded PATH for shorter PREFIX
- used install instead of cp
- removed empty targetinstall stage

 rules/bare_metal.in     |  7 +++++
 rules/bare_metal_cm3.in | 12 +++++++++
 rules/libopencm3.in     | 11 ++++++++
 rules/libopencm3.make   | 72 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 102 insertions(+)
 create mode 100644 rules/bare_metal_cm3.in
 create mode 100644 rules/libopencm3.in
 create mode 100644 rules/libopencm3.make

diff --git a/rules/bare_metal.in b/rules/bare_metal.in
index 1292a34..e5c15c5 100644
--- a/rules/bare_metal.in
+++ b/rules/bare_metal.in
@@ -6,3 +6,10 @@ menuconfig STELLARIS
 if STELLARIS
 source "generated/bare_metal_stellaris.in"
 endif
+
+menuconfig OPENCM3
+	bool "OpenCM3                       "
+
+if OPENCM3
+source "generated/bare_metal_cm3.in"
+endif
diff --git a/rules/bare_metal_cm3.in b/rules/bare_metal_cm3.in
new file mode 100644
index 0000000..b42c3d5
--- /dev/null
+++ b/rules/bare_metal_cm3.in
@@ -0,0 +1,12 @@
+## SECTION=bare_metal_cm3
+
+config CM3_GNU_TARGET
+	string
+	prompt "cm3 gnu target"
+	default "arm-cortexm3-eabi"
+	help
+	  configure the cm3 gnu target
+
+config CM3_CC
+	string
+	default "${PTXCONF_CM3_GNU_TARGET}-gcc"
diff --git a/rules/libopencm3.in b/rules/libopencm3.in
new file mode 100644
index 0000000..69276b7
--- /dev/null
+++ b/rules/libopencm3.in
@@ -0,0 +1,11 @@
+## SECTION=bare_metal_cm3
+
+config LIBOPENCM3
+	tristate
+	prompt "libopencm3"
+	help
+	  The libopencm3 project (previously known as libopenstm32) aims
+	  to create a free/libre/open-source (LGPL v3, or later) firmware
+	  library for various ARM Cortex-M0(+)/M3/M4 microcontrollers,
+	  including ST STM32, Ti Tiva and Stellaris, NXP LPC 11xx, 13xx,
+	  15xx, 17xx parts, Atmel SAM3, Energy Micro EFM32 and others.
diff --git a/rules/libopencm3.make b/rules/libopencm3.make
new file mode 100644
index 0000000..ed8f984
--- /dev/null
+++ b/rules/libopencm3.make
@@ -0,0 +1,72 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2013 by Michael Grzeschik <m.grzeschik@gmx.net>
+#
+# See CREDITS for details about who has contributed to this project.
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+ifdef PTXCONF_LIBOPENCM3
+ifneq ($(shell test -h $(PTXDIST_WORKSPACE)/selected_toolchain_cm3 && echo ok),ok)
+    $(warning *** selected_toolchain_cm3 must point to a valid cortexm3 toolchain)
+    $(error )
+endif
+ifneq ($(shell test -x $(PTXDIST_WORKSPACE)/selected_toolchain_cm3/$(PTXCONF_CM3_CC) && echo ok),ok)
+    $(warning *** $(PTXDIST_WORKSPACE)/selected_toolchain_cm3/$(PTXCONF_CM3_CC) not found)
+    $(error )
+endif
+endif
+
+#
+# We provide this package
+#
+PACKAGES-$(PTXCONF_LIBOPENCM3) += libopencm3
+
+#
+# Paths and names
+#
+LIBOPENCM3_VERSION	:= 67b538a5
+LIBOPENCM3_MD5		:= 7d40cc7bcd3a5e852d0b37572655b9b5
+LIBOPENCM3		:= libopencm3-$(LIBOPENCM3_VERSION)
+LIBOPENCM3_SUFFIX	:= tar.bz2
+LIBOPENCM3_URL		:= https://github.com/libopencm3/libopencm3.git;tag=67b538a5
+LIBOPENCM3_SOURCE	:= $(SRCDIR)/$(LIBOPENCM3).$(LIBOPENCM3_SUFFIX)
+LIBOPENCM3_DIR		:= $(BUILDDIR)/$(LIBOPENCM3)
+LIBOPENCM3_LICENSE	:= LGPLv3+
+
+# ----------------------------------------------------------------------------
+# Prepare
+# ----------------------------------------------------------------------------
+
+LIBOPENCM3_PATH	:= \
+	PATH=$(PATH):$(PTXDIST_WORKSPACE)/selected_toolchain_cm3
+
+LIBOPENCM3_MAKE_OPT := \
+	PREFIX=$(PTXCONF_CM3_GNU_TARGET)
+
+LIBOPENCM3_INSTALL_OPT := \
+	$(LIBOPENCM3_MAKE_OPT)
+
+# ----------------------------------------------------------------------------
+# Install
+# ----------------------------------------------------------------------------
+
+$(STATEDIR)/libopencm3.install:
+	@$(call targetinfo)
+
+#	# install static libraries
+	cd $(LIBOPENCM3_DIR) && \
+	for i in lib/*.a; do \
+		install -D -m644 $$i $(PTXDIST_PLATFORMDIR)/sysroot-cm3/$$i; \
+	done
+
+#	# install header files
+	cd $(LIBOPENCM3_DIR) && \
+	for i in `find . -name "*.h"`; do \
+		install -D -m644 $$i $(PTXDIST_PLATFORMDIR)/sysroot-cm3/$$i; \
+	done
+	@$(call touch)
+
+# vim: syntax=make
-- 
2.0.0


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