[ptxdist] [RFC PATCH 3/3] barebox: add integration of firmware blobs

[Michael Riesch <michael.riesch@wolfvision.net>]

In some cases barebox requires firmware blobs, which may be
provided in binary form by the vendor or compiled in a
preceding step. Add the possibility to specify files which
are injected in the barebox source directory during
preparation.

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
---
 platforms/barebox.in                   | 23 +++++++++++++++++++++++
 rules/barebox.make                     |  6 ++++++
 rules/post/ptxd_make_world_inject.make | 19 +++++++++++++++++++
 scripts/lib/ptxd_make_world_inject.sh  | 21 +++++++++++++++++++++
 4 files changed, 69 insertions(+)
 create mode 100644 rules/post/ptxd_make_world_inject.make
 create mode 100644 scripts/lib/ptxd_make_world_inject.sh

diff --git a/platforms/barebox.in b/platforms/barebox.in
index d35d16501..422897a66 100644
--- a/platforms/barebox.in
+++ b/platforms/barebox.in
@@ -55,6 +55,29 @@ config BAREBOX_CONFIG
 	  This entry specifies the .config file used to compile
 	  barebox.
 
+menuconfig BAREBOX_FIRMWARE
+	bool
+	prompt "integrate firmware blobs      "
+
+if BAREBOX_FIRMWARE
+
+config BAREBOX_FIRMWARE_PATH
+	string "path(s) to firmware blobs"
+	default "${PTXDIST_SYSROOT_TARGET}/usr/lib/firmware"
+	help
+	  Define path to the firmware blob(s). Multiple directories can
+	  be specified separated by ':'.
+
+config BAREBOX_FIRMWARE_FILES
+	string "firmware blob file(s)"
+	default "<vendorblob>.bin"
+	help
+	  Select the firmware blob to use integrated into the barebox
+	  source before compilation. Multiple dts files can be
+	  specified, separated by spaces.
+
+endif
+
 config BAREBOX_EXTRA_ENV
 	prompt "extend the builtin barebox environment"
 	bool
diff --git a/rules/barebox.make b/rules/barebox.make
index bea9f3adc..a81fc86b3 100644
--- a/rules/barebox.make
+++ b/rules/barebox.make
@@ -26,6 +26,8 @@ BAREBOX_BUILD_DIR	:= $(BAREBOX_DIR)-build
 BAREBOX_LICENSE		:= GPL-2.0-only
 BAREBOX_DEVPKG		:= NO
 BAREBOX_BUILD_OOT	:= KEEP
+BAREBOX_INJECT_PATH	:=$(call remove_quotes,$(PTXCONF_BAREBOX_FIRMWARE_PATH))
+BAREBOX_INJECT_FILES	:=$(call remove_quotes,$(PTXCONF_BAREBOX_FIRMWARE_FILES))
 
 BAREBOX_CONFIG		:= $(call ptx/in-platformconfigdir, \
 		$(call remove_quotes, $(PTXCONF_BAREBOX_CONFIG)))
@@ -94,6 +96,10 @@ ifdef PTXCONF_BAREBOX_EXTRA_ENV
 	@rm -rf $(BAREBOX_BUILD_DIR)/defaultenv/barebox_default_env
 endif
 
+ifdef PTXCONF_BAREBOX_FIRMWARE
+	@$(call world/inject, BAREBOX)
+endif
+
 	@$(call touch)
 
 # ----------------------------------------------------------------------------
diff --git a/rules/post/ptxd_make_world_inject.make b/rules/post/ptxd_make_world_inject.make
new file mode 100644
index 000000000..b7d28e92f
--- /dev/null
+++ b/rules/post/ptxd_make_world_inject.make
@@ -0,0 +1,19 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2021 by Michael Riesch <michael.riesch@wolfvision.net>
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+world/inject/env = \
+	$(call world/env, $(1)) \
+	pkg_inject_path="$($(1)_INJECT_PATH)" \
+	pkg_inject_files="$($(1)_INJECT_FILES)" \
+	pkg_source="$($(1)_DIR)"
+
+world/inject = \
+	$(call world/inject/env,$(strip $(1))) \
+	ptxd_make_world_inject
+
+# vim: syntax=make
diff --git a/scripts/lib/ptxd_make_world_inject.sh b/scripts/lib/ptxd_make_world_inject.sh
new file mode 100644
index 000000000..ac3134498
--- /dev/null
+++ b/scripts/lib/ptxd_make_world_inject.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+#
+# Copyright (C) 2021 by Michael Riesch <michael.riesch@wolfvision.net>
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+ptxd_make_world_inject() {
+    for pair in ${pkg_inject_files}; do
+	# TODO implement lookup
+
+	source=$pkg_inject_path/$(echo $pair | cut -d ":" -f 1)
+	target=$pkg_source/$(echo $pair | cut -d ":" -f 2)
+
+	echo -e "\nInject file $source into $target..."
+	cp $source $target
+
+    done
+}
+export -f ptxd_make_world_inject
-- 
2.30.2


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