[coreboot-gerrit] Change in coreboot[master]: sb/intel/{bd82x6x|ibexpeak}: Clear flush_* in FADT

[Patrick Rudolph (Code Review)]

Patrick Rudolph has submitted this change. ( https://review.coreboot.org/c/coreboot/+/34453 )

Change subject: sb/intel/{bd82x6x|ibexpeak}: Clear flush_* in FADT
......................................................................

sb/intel/{bd82x6x|ibexpeak}: Clear flush_* in FADT

Both fields are ignored if WBINVD is set, which is true for all
processors since i486.

Change-Id: Ibad56046e2c1b8595dc31e5861b9fd1fd7d2d6f3
Signed-off-by: Patrick Rudolph 
Signed-off-by: Christian Walter 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34453
Tested-by: build bot (Jenkins) 
Reviewed-by: Arthur Heymans 
---
M src/southbridge/intel/bd82x6x/lpc.c
M src/southbridge/intel/ibexpeak/lpc.c
2 files changed, 6 insertions(+), 6 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Arthur Heymans: Looks good to me, approved

diff --git a/src/southbridge/intel/bd82x6x/lpc.c b/src/southbridge/intel/bd82x6x/lpc.c
index 987db36..55e2573 100644
--- a/src/southbridge/intel/bd82x6x/lpc.c
+++ b/src/southbridge/intel/bd82x6x/lpc.c
@@ -726,12 +726,12 @@
    }
    fadt->p_lvl2_lat = c2_latency;
    fadt->p_lvl3_lat = 87;
-	fadt->flush_size = 1024;
-	fadt->flush_stride = 16;
+	/* flush_* is ignored if ACPI_FADT_WBINVD is set */
+	fadt->flush_size = 0;
+	fadt->flush_stride = 0;
    /* P_CNT not supported */
    fadt->duty_offset = 0;
    fadt->duty_width = 0;
-
    fadt->day_alrm = 0xd;
    fadt->mon_alrm = 0x00;
    fadt->century = 0x00;
diff --git a/src/southbridge/intel/ibexpeak/lpc.c b/src/southbridge/intel/ibexpeak/lpc.c
index 0d15b5d..54b2621 100644
--- a/src/southbridge/intel/ibexpeak/lpc.c
+++ b/src/southbridge/intel/ibexpeak/lpc.c
@@ -620,12 +620,12 @@
    }
    fadt->p_lvl2_lat = c2_latency;
    fadt->p_lvl3_lat = 87;
-	fadt->flush_size = 1024;
-	fadt->flush_stride = 16;
+	/* flush_* is ignored if ACPI_FADT_WBINVD is set */
+	fadt->flush_size = 0;
+	fadt->flush_stride = 0;
    /* P_CNT not supported */
    fadt->duty_offset = 0;
    fadt->duty_width = 0;
-
    fadt->day_alrm = 0xd;
    fadt->mon_alrm = 0x00;
    fadt->century = 0x32;