drivers/spi: provide option to not include all flash drivers

All flash drivers are automatically included in the build unless
COMMON_CBFS_SPI_WRAPPER was selected. However, there are cases
where these drivers are unnecessary such as certain intel platforms
where spi controller uses hardware sequencing without any ability
to manually probe the device. Therefore, provide an option that the
SoC can set the default value for. The COMMON_CBFS_SPI_WRAPPER
option is still honored by not including all drivers when that
is selected.

BUG=chrome-os-partner:56151

Change-Id: Ie9aa447da450f7c8717545f05cff800139a9e2dd
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16187
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

1 files changed, 15 insertions, 10 deletions

diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig
index 40f8830855..7776d5bb2f 100644
--- a/src/drivers/spi/Kconfig
+++ b/src/drivers/spi/Kconfig
@@ -22,6 +22,11 @@ config SPI_FLASH
 
 if SPI_FLASH
 
+config SPI_FLASH_INCLUDE_ALL_DRIVERS
+	bool
+	default n if COMMON_CBFS_SPI_WRAPPER
+	default y
+
 config SPI_ATOMIC_SEQUENCING
 	bool
 	default y if ARCH_X86
@@ -48,70 +53,70 @@ config SPI_FLASH_NO_FAST_READ
 
 config SPI_FLASH_ADESTO
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Adesto Technologies.
 
 config SPI_FLASH_AMIC
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by AMIC.
 
 config SPI_FLASH_ATMEL
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Atmel.
 
 config SPI_FLASH_EON
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by EON.
 
 config SPI_FLASH_GIGADEVICE
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Gigadevice.
 
 config SPI_FLASH_MACRONIX
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Macronix.
 
 config SPI_FLASH_SPANSION
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Spansion.
 
 config SPI_FLASH_SST
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by SST.
 
 config SPI_FLASH_STMICRO
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by ST MICRO.
 
 config SPI_FLASH_WINBOND
 	bool
-	default y if !COMMON_CBFS_SPI_WRAPPER
+	default y if SPI_FLASH_INCLUDE_ALL_DRIVERS
 	help
 	  Select this option if your chipset driver needs to store certain
 	  data in the SPI flash and your SPI flash is made by Winbond.