[S] Change in coreboot[master]: mb/google/skyrim: Disable unused SPI ROM types

[Martin Roth (Code Review)]

Martin Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/72769 )

Change subject: mb/google/skyrim: Disable unused SPI ROM types
......................................................................

mb/google/skyrim: Disable unused SPI ROM types

By default, coreboot includes support for all the different types of SPI
ROMs.  Excluding the unused ROM types shrinks ramstage by almost 4k.

BUG=b:267735039
TEST=Build & Boot ROM
BRANCH=Skyrim

Signed-off-by: Martin Roth 
Change-Id: If6e402269d1f2cac8256d478eb36743441497bdf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72769
Reviewed-by: Karthik Ramasubramanian 
Tested-by: build bot (Jenkins) 
Reviewed-by: Tim Van Patten 
Reviewed-by: Jon Murphy 
---
M src/mainboard/google/skyrim/Kconfig
1 file changed, 39 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Karthik Ramasubramanian: Looks good to me, approved
  Jon Murphy: Looks good to me, approved
  Tim Van Patten: Looks good to me, approved

diff --git a/src/mainboard/google/skyrim/Kconfig b/src/mainboard/google/skyrim/Kconfig
index 1eb6926..7b8618d 100644
--- a/src/mainboard/google/skyrim/Kconfig
+++ b/src/mainboard/google/skyrim/Kconfig
@@ -199,4 +199,21 @@
 config CARDBUS_PLUGIN_SUPPORT
    default n

+# Exclude support for SPI ROM types that won't be used on Skyrim platforms
+config SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS
+	default y
+
+# Gigadevice is used on Whiterun as an alternative to Winbond
+config SPI_FLASH_GIGADEVICE
+	default y
+
+# XMC chips used on Markarth as an alternative to Winbond
+# These chips identify as ST Micro (Manufacturer ID: 0x20)
+config SPI_FLASH_STMICRO
+	default y
+
+# Winbond chips are used by all Skyrim devices as the primary flash chip
+config SPI_FLASH_WINBOND
+	default y
+
 endif # BOARD_GOOGLE_BASEBOARD_SKYRIM