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  2. [PATCH 1/1] Qemu: SbsaQemu: Set the DSDT revision value to 2 to use 64-bit math

Re: [PATCH 1/1] Qemu: SbsaQemu: Set the DSDT revision value to 2 to use 64-bit math

Leif Lindholm
 

Not just an improvement, but an actual bugfix.

I would propose a subject line change though:
Qemu: SbsaQemu: Set the DSDT revision value to 2 to use 64-bit math
->
Platform/Qemu: fix SbsaQemu DSDT format version

If you're OK with the change, I can fold that in.
Reviewed-by: Leif Lindholm <leif@nuviainc.com>

On Wed, Sep 22, 2021 at 16:37:09 -0600, Rebecca Cran wrote:
Set the DSDT revision value to 2 by using the define from Acpi60.h
EFI_ACPI_6_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_REVISION. This
causes the AML interpreter to use full 64-bit integers and math.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl b/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
index e056d6cdb02e..1bf9fbb99e75 100644
--- a/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
+++ b/Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl
@@ -6,6 +6,7 @@
* SPDX-License-Identifier: BSD-2-Clause-Patent
**/

+#include <IndustryStandard/Acpi60.h>
#include <IndustryStandard/SbsaQemuAcpi.h>

#define LINK_DEVICE(Uid, LinkName, Irq) \
@@ -25,8 +26,9 @@
Address, Pin, Link, Zero \
}

-DefinitionBlock ("DsdtTable.aml", "DSDT", 1, "LINARO", "SBSAQEMU",
- FixedPcdGet32 (PcdAcpiDefaultOemRevision)) {
+DefinitionBlock ("DsdtTable.aml", "DSDT",
+ EFI_ACPI_6_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_REVISION,
+ "LINARO", "SBSAQEMU", FixedPcdGet32 (PcdAcpiDefaultOemRevision)) {
Scope (_SB) {
// UART PL011
Device (COM0) {
--
2.31.1
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