[coreboot-gerrit] Change in coreboot[master]: soc/intel/braswell/acpi/lpc.asl: Allocate used ROM size only

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/31822 )

Change subject: soc/intel/braswell/acpi/lpc.asl: Allocate used ROM size only
......................................................................

soc/intel/braswell/acpi/lpc.asl: Allocate used ROM size only

Fixed ROM area is allocated.
Reduce the ROM size using CONFIG_COREBOOT_ROMSIZE.

BUG=N/A
TEST=Facebook FBG-1701 booting Embedded Linux

Change-Id: I7a47bf2600f546271c5a65641d29f868ff2748bf
Signed-off-by: Frans Hendriks 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31822
Tested-by: build bot (Jenkins) 
Reviewed-by: Nico Huber 
---
M src/soc/intel/braswell/acpi/lpc.asl
1 file changed, 13 insertions(+), 3 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved

diff --git a/src/soc/intel/braswell/acpi/lpc.asl b/src/soc/intel/braswell/acpi/lpc.asl
index 6b2ecec..9caa8f1 100644
--- a/src/soc/intel/braswell/acpi/lpc.asl
+++ b/src/soc/intel/braswell/acpi/lpc.asl
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2007-2009 coresystems GmbH
  * Copyright (C) 2013 Google Inc.
- * Copyright (C) 2018 Eltan B.V.
+ * Copyright (C) 2018-2019 Eltan B.V.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -42,10 +42,20 @@
    Device (FWH)		/* Firmware Hub */
    {
    	Name (_HID, EISAID("INT0800"))
-		Name (_CRS, ResourceTemplate()
+		Name (RBUF, ResourceTemplate()
    	{
-			Memory32Fixed(ReadOnly, 0xff000000, 0x01000000)
+			Memory32Fixed(ReadOnly, 0, 0, FBAR)
    	})
+
+		Method (_CRS)
+		{
+			CreateDwordField (^RBUF, ^FBAR._BAS, FBAS)
+			CreateDwordField (^RBUF, ^FBAR._LEN, FLEN)
+			Multiply(CONFIG_COREBOOT_ROMSIZE_KB, 1024, Local0)
+			Store(Local0, FLEN)
+			Add(Subtract(0xffffffff, Local0), 1, FBAS)
+			Return (^RBUF)
+		}
    }

#if !CONFIG(DISABLE_HPET)