x86: bootblock: remove linking and program flow from build system

The build system was previously determining the flow
and linking scripts bootblock code by the order of files
added to the bootblock_inc bootblock-y variables.Those
files were then concatenated together and built by a myriad of
make rules.

Now bootblock.S and bootblock.ld is added so that bootblock
can be built and linked using the default build rules.
CHIPSET_BOOTBLOCK_INCLUDE is introduced in order to allow the
chipset code to place include files in the path of the bootblock
program -- a replacement for the chipset_bootblock_inc
make variable.

BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built vortex, rambi, and some asus boards.

Change-Id: Ida4571cbe6eed65e77ade98b8d9ad056353c53f9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11495
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

12 files changed, 16 insertions, 8 deletions

diff --git a/src/soc/intel/baytrail/Kconfig b/src/soc/intel/baytrail/Kconfig
index 5754c15968..921f568fa9 100644
--- a/src/soc/intel/baytrail/Kconfig
+++ b/src/soc/intel/baytrail/Kconfig
@@ -171,4 +171,8 @@ config REFCODE_BLOB_FILE
 
 endif # HAVE_REFCODE_BLOB
 
+config CHIPSET_BOOTBLOCK_INCLUDE
+	string
+	default "soc/intel/baytrail/bootblock/timestamp.inc"
+
 endif
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc
index 741752603b..e8c5022c2e 100644
--- a/src/soc/intel/baytrail/Makefile.inc
+++ b/src/soc/intel/baytrail/Makefile.inc
@@ -1,6 +1,5 @@
 ifeq ($(CONFIG_SOC_INTEL_BAYTRAIL),y)
 
-subdirs-y += bootblock
 subdirs-y += microcode
 subdirs-y += romstage
 subdirs-y += ../../../cpu/x86/lapic
diff --git a/src/soc/intel/baytrail/bootblock/Makefile.inc b/src/soc/intel/baytrail/bootblock/Makefile.inc
deleted file mode 100644
index 3a4025198c..0000000000
--- a/src/soc/intel/baytrail/bootblock/Makefile.inc
+++ /dev/null
@@ -1 +0,0 @@
-chipset_bootblock_inc += $(src)/soc/intel/baytrail/bootblock/timestamp.inc
diff --git a/src/soc/intel/braswell/Kconfig b/src/soc/intel/braswell/Kconfig
index 4c9c8aadb5..ab99a08724 100644
--- a/src/soc/intel/braswell/Kconfig
+++ b/src/soc/intel/braswell/Kconfig
@@ -198,4 +198,8 @@ config ME_BIN_PATH
 	depends on HAVE_ME_BIN
 	default "3rdparty/blobs/mainboard/$(MAINBOARDDIR)/me.bin"
 
+config CHIPSET_BOOTBLOCK_INCLUDE
+	string
+	default "soc/intel/braswell/bootblock/timestamp.inc"
+
 endif
diff --git a/src/soc/intel/braswell/Makefile.inc b/src/soc/intel/braswell/Makefile.inc
index 9bf6cb2676..755c15a0cf 100644
--- a/src/soc/intel/braswell/Makefile.inc
+++ b/src/soc/intel/braswell/Makefile.inc
@@ -1,6 +1,5 @@
 ifeq ($(CONFIG_SOC_INTEL_BRASWELL),y)
 
-subdirs-y += bootblock
 subdirs-y += microcode
 subdirs-y += romstage
 subdirs-y += ../../../cpu/x86/lapic
diff --git a/src/soc/intel/braswell/bootblock/Makefile.inc b/src/soc/intel/braswell/bootblock/Makefile.inc
deleted file mode 100644
index 17d1ee8c5a..0000000000
--- a/src/soc/intel/braswell/bootblock/Makefile.inc
+++ /dev/null
@@ -1 +0,0 @@
-chipset_bootblock_inc += $(src)/soc/intel/braswell/bootblock/timestamp.inc
diff --git a/src/soc/intel/broadwell/Kconfig b/src/soc/intel/broadwell/Kconfig
index 30c00935a2..c2db2a1e52 100644
--- a/src/soc/intel/broadwell/Kconfig
+++ b/src/soc/intel/broadwell/Kconfig
@@ -272,4 +272,8 @@ config LOCK_MANAGEMENT_ENGINE
 
 	  If unsure, say N.
 
+config CHIPSET_BOOTBLOCK_INCLUDE
+	string
+	default "soc/intel/broadwell/bootblock/timestamp.inc"
+
 endif
diff --git a/src/soc/intel/broadwell/Makefile.inc b/src/soc/intel/broadwell/Makefile.inc
index 4b14ff809e..ca295fc0d0 100644
--- a/src/soc/intel/broadwell/Makefile.inc
+++ b/src/soc/intel/broadwell/Makefile.inc
@@ -1,6 +1,5 @@
 ifeq ($(CONFIG_SOC_INTEL_BROADWELL),y)
 
-subdirs-y += bootblock
 subdirs-y += microcode
 subdirs-y += romstage
 subdirs-y += ../../../cpu/x86/lapic
diff --git a/src/soc/intel/broadwell/bootblock/Makefile.inc b/src/soc/intel/broadwell/bootblock/Makefile.inc
deleted file mode 100644
index 2ca5a4569f..0000000000
--- a/src/soc/intel/broadwell/bootblock/Makefile.inc
+++ /dev/null
@@ -1 +0,0 @@
-chipset_bootblock_inc += $(src)/soc/intel/broadwell/bootblock/timestamp.inc
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index d53e67e806..843cb8a081 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -200,4 +200,8 @@ config UART_DEBUG
 	select DRIVERS_UART_8250MEM
 	select DRIVERS_UART_8250MEM_32
 
+config CHIPSET_BOOTBLOCK_INCLUDE
+	string
+	default "soc/intel/skylake/bootblock/timestamp.inc"
+
 endif
diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc
index 3bd9823738..32ecb5d60b 100644
--- a/src/soc/intel/skylake/Makefile.inc
+++ b/src/soc/intel/skylake/Makefile.inc
@@ -1,6 +1,5 @@
 ifeq ($(CONFIG_SOC_INTEL_SKYLAKE),y)
 
-subdirs-y += bootblock
 subdirs-y += microcode
 subdirs-y += romstage
 subdirs-y += ../../../cpu/intel/microcode
diff --git a/src/soc/intel/skylake/bootblock/Makefile.inc b/src/soc/intel/skylake/bootblock/Makefile.inc
deleted file mode 100644
index a31f588f58..0000000000
--- a/src/soc/intel/skylake/bootblock/Makefile.inc
+++ /dev/null
@@ -1 +0,0 @@
-chipset_bootblock_inc += $(src)/soc/intel/skylake/bootblock/timestamp.inc