mb/google/brya/var/ghost: Split ghost4adl into 3 variants

We plan to make 3 firmwares which differ only by Kconfig options and
can share a common variant directory.

ghost4adl: Board with an ADL chip.
ghost4es:  Board near identical but has RPL-ES chip.
ghost:     Will have final RPL silicon.

Since they will only differ by Kconfig options and Intel binary blobs,
let's not duplicate the variant directory but instead share it in
common.

BUG=b:239456576
BRANCH=firmware-brya-14505.B
TEST="make menuconfig", verify layout of board selection

Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I94f2048bbe6675a807f8eba986a1ded0a4167733
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65956
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>

src/mainboard/google/brya/Kconfig

@@ -60,6 +60,11 @@ config BOARD_GOOGLE_BASEBOARD_BRASK
 	select SOC_INTEL_ALDERLAKE_PCH_P
 	select TPM_GOOGLE_CR50
 
+config BOARD_GOOGLE_BASEBOARD_GHOST
+	def_bool n
+	select BOARD_GOOGLE_BASEBOARD_BRYA if BOARD_GOOGLE_GHOST4ADL
+	select BOARD_GOOGLE_BASEBOARD_SKOLAS if !BOARD_GOOGLE_GHOST4ADL
+
 config BOARD_GOOGLE_BASEBOARD_NISSA
 	def_bool n
 	select BOARD_GOOGLE_BRYA_COMMON
@@ -116,7 +121,7 @@ config DRIVER_TPM_I2C_BUS
 	default 0x1 if BOARD_GOOGLE_BRASK
 	default 0x1 if BOARD_GOOGLE_PRIMUS
 	default 0x3 if BOARD_GOOGLE_PRIMUS4ES
-	default 0x1 if BOARD_GOOGLE_GHOST4ADL
+	default 0x1 if BOARD_GOOGLE_BASEBOARD_GHOST
 	default 0x1 if BOARD_GOOGLE_GIMBLE
 	default 0x3 if BOARD_GOOGLE_GIMBLE4ES
 	default 0x1 if BOARD_GOOGLE_REDRIX
@@ -180,7 +185,9 @@ config MAINBOARD_PART_NUMBER
 	default "Brask" if BOARD_GOOGLE_BRASK
 	default "Primus" if BOARD_GOOGLE_PRIMUS
 	default "Primus4ES" if BOARD_GOOGLE_PRIMUS4ES
+	default "Ghost" if BOARD_GOOGLE_GHOST
 	default "Ghost4ADL" if BOARD_GOOGLE_GHOST4ADL
+	default "Ghost4ES" if BOARD_GOOGLE_GHOST4ES
 	default "Gimble" if BOARD_GOOGLE_GIMBLE
 	default "Gimble4ES" if BOARD_GOOGLE_GIMBLE4ES
 	default "Redrix" if BOARD_GOOGLE_REDRIX
@@ -216,7 +223,7 @@ config VARIANT_DIR
 	default "brask" if BOARD_GOOGLE_BRASK
 	default "primus" if BOARD_GOOGLE_PRIMUS
 	default "primus4es" if BOARD_GOOGLE_PRIMUS4ES
-	default "ghost4adl" if BOARD_GOOGLE_GHOST4ADL
+	default "ghost" if BOARD_GOOGLE_BASEBOARD_GHOST
 	default "gimble" if BOARD_GOOGLE_GIMBLE
 	default "gimble4es" if BOARD_GOOGLE_GIMBLE4ES
 	default "redrix" if BOARD_GOOGLE_REDRIX

src/mainboard/google/brya/Kconfig.name

@@ -57,11 +57,19 @@ config BOARD_GOOGLE_FELWINTER
 	select DRIVERS_GENERIC_GPIO_KEYS
 	select DRIVERS_GENESYSLOGIC_GL9755
 
+config BOARD_GOOGLE_GHOST
+	bool "->  Ghost"
+	select BOARD_GOOGLE_BASEBOARD_GHOST
+
 config BOARD_GOOGLE_GHOST4ADL
 	bool "->  Ghost4ADL"
-	select BOARD_GOOGLE_BASEBOARD_BRYA
+	select BOARD_GOOGLE_BASEBOARD_GHOST
 	select ENABLE_TCSS_DISPLAY_DETECTION if RUN_FSP_GOP
 
+config BOARD_GOOGLE_GHOST4ES
+	bool "->  Ghost4ES"
+	select BOARD_GOOGLE_BASEBOARD_GHOST
+
 config BOARD_GOOGLE_GIMBLE
 	bool "->  Gimble"
 	select BOARD_GOOGLE_BASEBOARD_BRYA

src/mainboard/google/brya/variants/ghost/memory/Makefile.inc

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # This is an auto-generated file. Do not edit!!
 # Generated by:
-# ./util/spd_tools/bin/part_id_gen ADL lp5 src/mainboard/google/brya/variants/ghost4adl/memory src/mainboard/google/brya/variants/ghost4adl/memory/mem_parts_used.txt
+# ./util/spd_tools/bin/part_id_gen ADL lp5 src/mainboard/google/brya/variants/ghost/memory src/mainboard/google/brya/variants/ghost/memory/mem_parts_used.txt
 
 SPD_SOURCES =
 SPD_SOURCES += spd/lp5/set-0/spd-1.hex      # ID = 0(0b0000)  Parts = H9JCNNNBK3MLYR-N6E, MT62F512M32D2DR-031 WT:B

src/mainboard/google/brya/variants/ghost/memory/dram_id.generated.txt

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # This is an auto-generated file. Do not edit!!
 # Generated by:
-# ./util/spd_tools/bin/part_id_gen ADL lp5 src/mainboard/google/brya/variants/ghost4adl/memory src/mainboard/google/brya/variants/ghost4adl/memory/mem_parts_used.txt
+# ./util/spd_tools/bin/part_id_gen ADL lp5 src/mainboard/google/brya/variants/ghost/memory src/mainboard/google/brya/variants/ghost/memory/mem_parts_used.txt
 
 DRAM Part Name                 ID to assign
 H9JCNNNBK3MLYR-N6E             0 (0000)