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Revert "acpi: Bump FADT to revision 6"

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This reverts commit c8b0f31ca1.

Bumping the FADT table version from 3 to 6 causes
Windows 10 to BSOD with an ACPI BIOS error or simply
fail to boot on multiple platforms (Haswell, Broadwell,
Braswell, Skylake). Revert until the issue can be properly
identified and corrected.

Change-Id: I261d953321df2616a3f1c3460a535b57a8848315
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39307
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Matt DeVillier
2020-03-04 18:14:54 -06:00
committed by Patrick Rudolph
parent e0b74a142c
commit 8bee86ef23
2 changed files with 3 additions and 8 deletions
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2
src/arch/x86/acpi.c
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@ -1563,7 +1563,7 @@ int get_acpi_table_revision(enum acpi_tables table)
{
switch (table) {
case FADT:
return ACPI_FADT_REV_ACPI_6_0;
return ACPI_FADT_REV_ACPI_3_0;
case MADT: /* ACPI 3.0: 2, ACPI 4.0/5.0: 3, ACPI 6.2b/6.3: 5 */
return 2;
case MCFG: