Untangle CBFS microcode updates

The option to specify a binary file name was added later for platforms
that do not provide microcode updates in our blobs repository. Alas,
it wasn't visible what platforms these are. And if you specified a file
for a platform that already had one, they were all included together.

Make it visible which platforms don't provide binaries with the new con-
figs MICROCODE_BLOB_NOT_IN_BLOB_REPO, MICROCODE_BLOB_NOT_HOOKED_UP and
MICROCODE_BLOB_UNDISCLOSED. Based on that we can decide if we want to
include binaries by default or explicitly show that no files are inclu-
ded (default to CPU_MICROCODE_CBFS_NONE).

Also split CPU_MICROCODE_CBFS_GENERATE into the more explicit
CPU_MICROCODE_CBFS_DEFAULT_BINS and CPU_MICROCODE_CBFS_EXTERNAL_BINS.
And clean up the visibility of options: Don't show CBFS related options
on platforms that don't support it and don't show external file options
if the platform uses special rules for multiple files (CPU_MICROCODE_
MULTIPLE_FILES).

Change-Id: Ib403402e240d3531640a62ce93b7a93b4ef6ca5e
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/29934
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/apollolake/Kconfig

@@ -31,6 +31,7 @@ config CPU_SPECIFIC_OPTIONS
 	select CPU_INTEL_FIRMWARE_INTERFACE_TABLE
 	select IOAPIC
 	select PCR_COMMON_IOSF_1_0
+	select MICROCODE_BLOB_NOT_HOOKED_UP
 	select SMP
 	select SSE2
 	select SUPPORT_CPU_UCODE_IN_CBFS

src/soc/intel/braswell/Kconfig

@@ -17,6 +17,7 @@ config CPU_SPECIFIC_OPTIONS
 	select CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM
 	select COLLECT_TIMESTAMPS
 	select SUPPORT_CPU_UCODE_IN_CBFS
+	select MICROCODE_BLOB_NOT_IN_BLOB_REPO
 	select CPU_INTEL_TURBO_NOT_PACKAGE_SCOPED
 	select HAVE_MONOTONIC_TIMER
 	select HAVE_SMI_HANDLER

src/soc/intel/cannonlake/Kconfig

@@ -46,6 +46,7 @@ config CPU_SPECIFIC_OPTIONS
 	select PARALLEL_MP
 	select PARALLEL_MP_AP_WORK
 	select PLATFORM_USES_FSP2_0
+	select MICROCODE_BLOB_NOT_HOOKED_UP
 	select POSTCAR_CONSOLE
 	select POSTCAR_STAGE
 	select REG_SCRIPT

src/soc/intel/fsp_baytrail/Kconfig

@@ -41,6 +41,7 @@ config CPU_SPECIFIC_OPTIONS
 	select TSC_SYNC_MFENCE
 	select UDELAY_TSC
 	select SUPPORT_CPU_UCODE_IN_CBFS
+	select MICROCODE_BLOB_NOT_HOOKED_UP
 	select INTEL_DESCRIPTOR_MODE_CAPABLE
 	select HAVE_SPI_CONSOLE_SUPPORT
 

src/soc/intel/fsp_broadwell_de/Kconfig

@@ -20,6 +20,7 @@ config CPU_SPECIFIC_OPTIONS
 	select IOAPIC
 	select UDELAY_TSC
 	select SUPPORT_CPU_UCODE_IN_CBFS
+	select MICROCODE_BLOB_NOT_HOOKED_UP
 	# Microcode header files are delivered in FSP package
 	select USES_MICROCODE_HEADER_FILES if HAVE_FSP_BIN
 	select INTEL_DESCRIPTOR_MODE_CAPABLE

src/soc/intel/icelake/Kconfig

@@ -33,6 +33,7 @@ config CPU_SPECIFIC_OPTIONS
 	select PARALLEL_MP
 	select PARALLEL_MP_AP_WORK
 	select PLATFORM_USES_FSP2_0
+	select MICROCODE_BLOB_UNDISCLOSED
 	select POSTCAR_CONSOLE
 	select POSTCAR_STAGE
 	select REG_SCRIPT