package/qoriq-rcw: add in-tree rcw source support

The qoriq-rcw repository contains the RCW source for a lot of
development boards already. Add a new option
BR2_PACKAGE_HOST_QORIQ_RCW_INTREE to use one of these rather than a
custom one.

Signed-off-by: Jerry Huang <jerry.huang@nxp.com>
[Arnout:
 - rename the option to _RCW_INTREE;
 - update commit message, documentation, and internal variables
   accordingly;
 - reorganise condition tree so it becomes a little simpler;
 - add patsubst so the source can be specified as either %.rcw or %.bin;
 - always install it as PBL.bin, to be consistent with the custom
   option.
]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/qoriq-rcw/Config.in.host

@@ -25,4 +25,16 @@ config BR2_PACKAGE_HOST_QORIQ_RCW_CUSTOM_PATH
 	  included for use in the SDK or with post scripts but no
 	  RCW binary will not be generated.
 
+config BR2_PACKAGE_HOST_QORIQ_RCW_INTREE
+	string "In-tree RCW name"
+	depends on !BR2_PACKAGE_HOST_QORIQ_RCW_CUSTOM_PATH
+	help
+	  This option is used to specify the RCW binary file for board.
+	  which is composed as platform/serdes_value/rcw_file: platform
+	  is the platform name, serdes_value is the setting of the
+	  Serdes, and rcw_file is the file name of RCW. For example:
+	  "ls1028ardb/R_SQPP_0x85bb/rcw_1300_sdboot.bin"
+
+	  If this option is empty, no rcw file is used.
+
 endif

package/qoriq-rcw/qoriq-rcw.mk

@@ -13,8 +13,10 @@ QORIQ_RCW_LICENSE_FILES = LICENSE
 HOST_QORIQ_RCW_DEPENDENCIES = $(BR2_PYTHON3_HOST_DEPENDENCY)
 
 QORIQ_RCW_FILES = $(call qstrip,$(BR2_PACKAGE_HOST_QORIQ_RCW_CUSTOM_PATH))
+QORIQ_RCW_INTREE = $(call qstrip,$(BR2_PACKAGE_HOST_QORIQ_RCW_INTREE))
 
 ifneq ($(QORIQ_RCW_FILES),)
+
 QORIQ_RCW_INCLUDES = $(filter-out %.rcw,$(QORIQ_RCW_FILES))
 # Get the name of the custom rcw file from the custom list
 QORIQ_RCW_PROJECT = $(notdir $(filter %.rcw,$(QORIQ_RCW_FILES)))
@@ -54,6 +56,20 @@ endef
 define HOST_QORIQ_RCW_INSTALL_DELIVERY_FILE
 	$(INSTALL) -D -m 0644 $(@D)/PBL.bin $(BINARIES_DIR)/PBL.bin
 endef
+
+else ifneq ($(QORIQ_RCW_INTREE),)
+
+QORIQ_RCW_PLATFORM = $(firstword $(subst /, ,$(QORIQ_RCW_INTREE)))
+QORIQ_RCW_FILE_BIN = $(lastword $(subst /, ,$(QORIQ_RCW_INTREE)))
+
+define HOST_QORIQ_RCW_BUILD_CMDS
+	$(MAKE) -C $(@D)/$(QORIQ_RCW_PLATFORM)
+endef
+
+define HOST_QORIQ_RCW_INSTALL_DELIVERY_FILE
+	$(INSTALL) -D -m 0644 $(@D)/$(patsubst %.rcw,%.bin,$(QORIQ_RCW_INTREE)) \
+		$(BINARIES_DIR)/PBL.bin
+endef
 endif
 
 # Copy source files and script into $(HOST_DIR)/share/rcw/ so a developer