[XS] Change in coreboot[main]: mb/intel/mtlrvp: define a new config for Chrome EC

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79824?usp=email )

Change subject: mb/intel/mtlrvp: define a new config for Chrome EC
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mb/intel/mtlrvp: define a new config for Chrome EC

Introduce new config MTL_CHROME_EC_SHARED_SPI, tailored for
Chrome ECs utilizing an external shared SPI flash.

BUG=b:289783489
TEST=emerge-rex coreboot chromeos-bootimage is successful

Cq-Depend: chrome-internal:6691498
Cq-Depend: chrome-internal:6741356
Change-Id: I462c34c5adaefa37c652de293152243c58bad7c5
Signed-off-by: Deepti Deshatty 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79824
Tested-by: build bot (Jenkins) 
Reviewed-by: Eric Lai 
---
M src/mainboard/intel/mtlrvp/Kconfig
1 file changed, 7 insertions(+), 2 deletions(-)

Approvals:
  Eric Lai: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/intel/mtlrvp/Kconfig b/src/mainboard/intel/mtlrvp/Kconfig
index c4478d1..4d59f9b 100644
--- a/src/mainboard/intel/mtlrvp/Kconfig
+++ b/src/mainboard/intel/mtlrvp/Kconfig
@@ -107,7 +107,8 @@
 choice
    prompt "ON BOARD EC"
    default MTL_INTEL_EC if BOARD_INTEL_MTLRVP_P
-	default MTL_CHROME_EC if BOARD_INTEL_MTLRVP_P_EXT_EC || BOARD_INTEL_MTLRVP_P_MCHP || BOARD_INTEL_MTLRVP4ES_P_EXT_EC
+	default MTL_CHROME_EC if BOARD_INTEL_MTLRVP_P_EXT_EC || BOARD_INTEL_MTLRVP4ES_P_EXT_EC
+	default MTL_CHROME_EC_SHARED_SPI if BOARD_INTEL_MTLRVP_P_MCHP
    help
      This option allows you to select the on board EC to use.
      Select whether the board has Intel EC or/and Chrome EC
@@ -115,6 +116,10 @@
 config MTL_CHROME_EC
    bool "Chrome EC with Internal SPI flash"

+config MTL_CHROME_EC_SHARED_SPI
+	bool "Chrome EC with External Shared SPI flash"
+	select MAINBOARD_USES_IFD_EC_REGION
+
 config MTL_INTEL_EC
    bool "Intel EC"
    select EC_ACPI
@@ -122,7 +127,7 @@

config VBOOT
    select VBOOT_LID_SWITCH
-	select EC_GOOGLE_CHROMEEC_SWITCHES if MTL_CHROME_EC
+	select EC_GOOGLE_CHROMEEC_SWITCHES if MTL_CHROME_EC || MTL_CHROME_EC_SHARED_SPI

config UART_FOR_CONSOLE
    int