drivers/spi: move cbfs_spi.c location

The common boot device spi implementation is very much
specific to SPI flash. As such it should be moved into
that subdirectory. It's still a high-level option but
it correctly depends on BOOT_DEVICE_SPI_FLASH. Additionally
that allows the auto-selection of SPI_FLASH by a platform
selecting COMMON_CBFS_SPI_WRAPPER which allows for culling
of SPI_FLASH selections everywhere.

BUG=chrome-os-partner:56151

Change-Id: Ia2ccfdc9e1a4348cd91b381f9712d8853b7d2a79
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16212
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>

src/Kconfig

@@ -35,14 +35,6 @@ config CBFS_PREFIX
 	  Select the prefix to all files put into the image. It's "fallback"
 	  by default, "normal" is a common alternative.
 
-config COMMON_CBFS_SPI_WRAPPER
-	bool
-	default n
-	depends on SPI_FLASH
-	depends on !ARCH_X86
-	help
-	 Use common wrapper to interface CBFS to SPI bootrom.
-
 choice
 	prompt "Compiler to use"
 	default COMPILER_GCC

src/drivers/spi/Kconfig

@@ -13,6 +13,14 @@
 ## GNU General Public License for more details.
 ##
 
+config COMMON_CBFS_SPI_WRAPPER
+	bool
+	default n
+	depends on !ARCH_X86
+	depends on BOOT_DEVICE_SPI_FLASH
+	help
+	 Use common wrapper to interface CBFS to SPI bootrom.
+
 config SPI_FLASH
 	bool
 	default y if BOOT_DEVICE_SPI_FLASH

src/drivers/spi/Makefile.inc

@@ -8,6 +8,7 @@ smm-$(CONFIG_DEBUG_SMI) += spiconsole.c
 endif
 
 ifeq ($(CONFIG_COMMON_CBFS_SPI_WRAPPER),y)
+bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 bootblock-y += spi_flash.c
 bootblock-$(CONFIG_SPI_FLASH_EON) += eon.c
 bootblock-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.c
@@ -18,6 +19,7 @@ bootblock-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c
 bootblock-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c
 bootblock-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c
 
+romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 romstage-$(CONFIG_SPI_FLASH) += spi_flash.c
 romstage-$(CONFIG_SPI_FLASH_EON) += eon.c
 romstage-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.c
@@ -28,6 +30,7 @@ romstage-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c
 romstage-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c
 romstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c
 
+verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 verstage-$(CONFIG_SPI_FLASH) += spi_flash.c
 verstage-$(CONFIG_SPI_FLASH_EON) += eon.c
 verstage-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.c
@@ -40,6 +43,7 @@ verstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c
 
 endif
 
+ramstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 ramstage-$(CONFIG_SPI_FLASH) += spi_flash.c
 
 # drivers

src/lib/Makefile.inc

@@ -22,7 +22,6 @@ endif
 bootblock-y += prog_loaders.c
 bootblock-y += prog_ops.c
 bootblock-y += cbfs.c
-bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 bootblock-$(CONFIG_GENERIC_GPIO_LIB) += gpio.c
 bootblock-y += libgcc.c
 bootblock-$(CONFIG_GENERIC_UDELAY) += timer.c
@@ -49,7 +48,6 @@ verstage-y += memcmp.c
 verstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 verstage-y += boot_device.c
 verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
-verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 
 ifeq ($(MOCK_TPM),1)
 libverstage-y += mocked_tlcl.c
@@ -73,7 +71,6 @@ $(foreach arch,$(ARCH_SUPPORTED),\
 romstage-y += fmap.c
 romstage-y += delay.c
 romstage-y += cbfs.c
-romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 romstage-$(CONFIG_COMPRESS_RAMSTAGE) += lzma.c lzmadecode.c
 romstage-y += libgcc.c
 romstage-y += memrange.c
@@ -117,7 +114,6 @@ ramstage-y += delay.c
 ramstage-y += fallback_boot.c
 ramstage-y += compute_ip_checksum.c
 ramstage-y += cbfs.c
-ramstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 ramstage-y += lzma.c lzmadecode.c
 ramstage-y += stack.c
 ramstage-y += hexstrtobin.c
@@ -214,7 +210,6 @@ smm-y += halt.c
 postcar-y += bootmode.c
 postcar-y += boot_device.c
 postcar-y += cbfs.c
-postcar-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 postcar-y += delay.c
 postcar-y += fmap.c
 postcar-y += gcc.c