x86: kconfig: Drop ROM_NEEDS_BLOBS and BUILD_ROM

These 2 options are no longer needed as now binman is used to build
u-boot.rom.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Kconfig

@@ -343,27 +343,6 @@ config HAS_ROM
 	  Enables building of a u-boot.rom target. This collects U-Boot and
 	  any necessary binary blobs.
 
-config ROM_NEEDS_BLOBS
-	bool
-	depends on HAS_ROM
-	help
-	  Enable this if building the u-boot.rom target needs binary blobs, and
-	  so cannot be done normally. In this case, U-Boot will only build the
-	  ROM if the required blobs exist. If not, you will see an warning like:
-
-	    Image 'main-section' is missing external blobs and is non-functional:
-	      intel-descriptor intel-me intel-refcode intel-vga intel-mrc
-
-config BUILD_ROM
-	bool "Build U-Boot as BIOS replacement"
-	depends on HAS_ROM
-	default y if !ROM_NEEDS_BLOBS
-	help
-	  This option allows to build a ROM version of U-Boot.
-	  The build process generally requires several binary blobs
-	  which are not shipped in the U-Boot source tree.
-	  Please, see doc/arch/x86.rst for details.
-
 config SPL_IMAGE
 	string "SPL image used in the combined SPL+U-Boot image"
 	default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT

arch/x86/Kconfig

@@ -364,7 +364,6 @@ config HAVE_FSP
 	depends on !EFI
 	select USE_HOB
 	select HAS_ROM
-	select ROM_NEEDS_BLOBS
 	help
 	  Select this option to add an Firmware Support Package binary to
 	  the resulting U-Boot image. It is a binary blob which U-Boot uses
@@ -525,7 +524,6 @@ config ENABLE_MRC_CACHE
 config HAVE_MRC
 	bool "Add a System Agent binary"
 	select HAS_ROM
-	select ROM_NEEDS_BLOBS
 	depends on !HAVE_FSP
 	help
 	  Select this option to add a System Agent binary to

arch/x86/cpu/quark/Kconfig

@@ -24,7 +24,6 @@ if INTEL_QUARK
 
 config HAVE_RMU
 	bool "Add a Remote Management Unit (RMU) binary"
-	select ROM_NEEDS_BLOBS
 	help
 	  Select this option to add a Remote Management Unit (RMU) binary
 	  to the resulting U-Boot image. It is a data block (up to 64K) of

doc/arch/x86.rst

@@ -42,17 +42,8 @@ Build Instructions for U-Boot as BIOS replacement (bare mode)
 -------------------------------------------------------------
 Building a ROM version of U-Boot (hereafter referred to as u-boot.rom) is a
 little bit tricky, as generally it requires several binary blobs which are not
-shipped in the U-Boot source tree. Due to this reason, the u-boot.rom build is
+shipped in the U-Boot source tree. Due to this reason, the u-boot.rom build may
-not turned on by default in the U-Boot source tree. Firstly, you need turn it
+print some warnings if required binary blobs (e.g.: FSP) are not present.
-on by enabling the ROM build either via an environment variable::
-
-   $ export BUILD_ROM=y
-
-or via configuration::
-
-   CONFIG_BUILD_ROM=y
-
-Both tell the Makefile to build u-boot.rom as a target.
 
 CPU Microcode
 -------------