[PATCH v4 12/20] x86: smbios: Add a Kconfig indicating SMBIOS-table presence

[Simon Glass]

When booted from coreboot, U-Boot does not build the SMBIOS tables, but
it should still pass them on to the OS. Add a new option which indicates
whether SMBIOS tables are present, however they were built.

Flip the ordering so that the dependency is listed first, which is less
confusing.

Adjust GENERATE_SMBIOS_TABLE to depend on this new symbol.

Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---

(no changes since v3)

Changes in v3:
- Allow SMBIOS if EFI_LOADER is enabled
- Reword the help

Changes in v2:
- Add new patch

 lib/Kconfig | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/lib/Kconfig b/lib/Kconfig
index 1d63099b8e1..dac0e32649a 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -984,8 +984,8 @@ config BLOBLIST_TABLES
 
 config GENERATE_SMBIOS_TABLE
 	bool "Generate an SMBIOS (System Management BIOS) table"
+	depends on SMBIOS
 	default y
-	depends on X86 || EFI_LOADER
 	help
 	  The System Management BIOS (SMBIOS) specification addresses how
 	  motherboard and system vendors present management information about
@@ -1054,6 +1054,19 @@ config SPL_OID_REGISTRY
 	  unambiguous persistent name (https://en.wikipedia.org/wiki/Object_identifier).
 	  Enable fast lookup object identifier registry in the SPL.
 
+config SMBIOS
+	bool "SMBIOS support"
+	depends on X86 || EFI_LOADER
+	default y
+	help
+	  Indicates that this platform can support System Management BIOS
+	  (SMBIOS) tables. These provide various pieces of information about
+	  the board, such as the manufacturer and the model name.
+
+	  See GENERATE_SMBIOS_TABLE which controls whether U-Boot actually
+	  creates these tables, rather than them coming from a previous firmware
+	  stage.
+
 config SMBIOS_PARSER
 	bool "SMBIOS parser"
 	help
-- 
2.42.0.rc1.204.g551eb34607-goog