google/kukui: Revise FMAP firmware layout

Adjust FMAP sections that
- ELOG only needs 4K (by driver limitation)
- SHARED_DATA only needs 4K or less (for netboot params)
- SMMSTORE is probably not needed since UEFI@ARM is not available yet
- VPD can be smaller (most x86 devices have only 16/8K for RO/RW)
- Increase RW_LEGACY to 1M (recommended value)
- Move all new saved space to CBFS

BUG=b:134624821
TEST=Built Kukui image and boots on Rev2 units.

Change-Id: Id2910df73ea47bfa32e056d631d1c3e5f1eed0d1
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33239
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/mainboard/google/kukui/chromeos.fmd

@@ -1,30 +1,30 @@
 FLASH@0x0 0x800000 {
 	WP_RO@0x0 0x200000 {
-		RO_SECTION@0x0 0x1f0000 {
+		RO_SECTION@0x0 0x1f8000 {
 			BOOTBLOCK@0 32K
 			FMAP@0x8000 0x1000
-			COREBOOT(CBFS)@0x9000 0x1e4000
-			GBB@0x1ed000 0x2f00
-			RO_FRID@0x1eff00 0x100
+			COREBOOT(CBFS)@0x9000 0x1ec000
+			GBB 0x2f00
+			RO_FRID 0x100
 		}
-		RO_VPD(PRESERVE)@0x1f0000 0x10000
+		RO_VPD(PRESERVE)@0x1f8000 0x8000
 	}
-	RW_SECTION_A@0x200000 0x78000 {
+	RW_SECTION_A@0x200000 0x7c000 {
 		VBLOCK_A@0x0 0x2000
-		FW_MAIN_A(CBFS)@0x2000 0x75f00
-		RW_FWID_A@0x77f00 0x100
+		FW_MAIN_A(CBFS) 0x79f00
+		RW_FWID_A 0x100
 	}
-	RW_SHARED@0x278000 0x2000 {
-		SHARED_DATA@0x0 0x2000
+	RW_SHARED@0x27c000 0x1000 {
+		SHARED_DATA@0x0 0x1000
 	}
-	RW_NVRAM(PRESERVE)@0x27a000 0x2000
-	RW_ELOG(PRESERVE)@0x27c000 0x4000
-	RW_SECTION_B@0x280000 0x78000 {
+	RW_NVRAM(PRESERVE)@0x27d000 0x2000
+	# ELOG driver has hard-coded the size to 4k.
+	RW_ELOG(PRESERVE)@0x27f000 0x1000
+	RW_SECTION_B@0x280000 0x7c000 {
 		VBLOCK_B@0x0 0x2000
-		FW_MAIN_B(CBFS)@0x2000 0x75f00
-		RW_FWID_B@0x77f00 0x100
+		FW_MAIN_B(CBFS) 0x79f00
+		RW_FWID_B 0x100
 	}
-	RW_VPD(PRESERVE)@0x2f8000 0x8000
-	SMMSTORE(PRESERVE)@0x300000 0x20000
-	RW_LEGACY(CBFS)@0x320000 0xe0000
+	RW_VPD(PRESERVE)@0x2fc000 0x4000
+	RW_LEGACY(CBFS)@0x300000 0x100000
 }