boot/at91bootstrap3: download via custom git url

This patch adds the option to download at91bootstrap3 from
a custom git URL. This is a requirement for all that boards
that use a custom at91bootstrap3 version.

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

boot/at91bootstrap3/Config.in

@@ -10,6 +10,40 @@ config BR2_TARGET_AT91BOOTSTRAP3
 
 if BR2_TARGET_AT91BOOTSTRAP3
 
+choice
+
+	prompt "AT91 Bootstrap 3 version"
+
+config BR2_TARGET_AT91BOOTSTRAP3_LATEST_VERSION
+	bool "3.7.2"
+
+config BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT
+	bool "Custom Git repository"
+	help
+	  This option allows Buildroot to get the AT91 Bootstrap 3 source
+	  code from a Git repository.
+
+endchoice
+
+if BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT
+
+config BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_URL
+	string "URL of custom repository"
+
+config BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_VERSION
+	string "Custom repository version"
+	help
+	  Revision to use in the typical format used by Git
+	  E.G. a sha id, a tag, branch, ..
+
+endif
+
+config BR2_TARGET_AT91BOOTSTRAP3_VERSION
+	string
+	default "v3.7.2" if BR2_TARGET_AT91BOOTSTRAP3_LATEST_VERSION
+	default BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_VERSION \
+		if BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT
+
 config BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_PATCH_DIR
 	string "custom patch dir"
 	help

boot/at91bootstrap3/at91bootstrap3.mk

@@ -4,8 +4,15 @@
 #
 ################################################################################
 
-AT91BOOTSTRAP3_VERSION = v3.7.2
+AT91BOOTSTRAP3_VERSION = $(call qstrip,$(BR2_TARGET_AT91BOOTSTRAP3_VERSION))
+
+ifeq ($(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT),y)
+AT91BOOTSTRAP3_SITE = $(call qstrip,$(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_URL))
+AT91BOOTSTRAP3_SITE_METHOD = git
+else
 AT91BOOTSTRAP3_SITE = $(call github,linux4sam,at91bootstrap,$(AT91BOOTSTRAP3_VERSION))
+endif
+
 AT91BOOTSTRAP3_LICENSE = Atmel License
 AT91BOOTSTRAP3_LICENSE_FILES = main.c
 
@@ -57,4 +64,14 @@ ifeq ($(call qstrip,$(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_CONFIG_FILE)),)
 $(error No at91bootstrap3 configuration file specified, check your BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_CONFIG_FILE setting)
 endif
 endif
+
+ifeq ($(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT),y)
+ifeq ($(call qstrip,$(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_URL)),)
+$(error No custom at91bootstrap3 repository URL specified. Check your BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_URL setting)
+endif
+ifeq ($(call qstrip,$(BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_VERSION)),)
+$(error No custom at91bootstrap3 repository version specified. Check your BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_VERSION setting)
+endif
+endif
+
 endif