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src: Drop useless cache flush settings in FADT

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They are ignored if the ACPI_FADT_WBINVD flag is set, which is required
on current ACPI versions and only maintained for ACPI 1.0 compatibility.

Tested on Asus P8Z77-V LX2 with Linux 5.7.6 and Windows 10 at the end of
the patch train, both operating systems are able to boot successfully.

Change-Id: Ief1219542ba71d18153b64180e0ff60bd1e7687b
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43390
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
This commit is contained in:
Angel Pons
2020-07-13 01:41:00 +02:00
parent b74975e403
commit 3eb8dbaee2
21 changed files with 0 additions and 44 deletions
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2
src/southbridge/intel/i82371eb/fadt.c
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@@ -38,8 +38,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
fadt->p_lvl2_lat = 101; /* >100 means c2 not supported */
fadt->p_lvl3_lat = 1001; /* >1000 means c3 not supported */
fadt->flush_size = 0; /* only needed if CPU wbinvd is broken */
fadt->flush_stride = 0;
fadt->duty_offset = 1; /* bit 1:3 in PCNTRL reg (pmbase+0x10) */
fadt->duty_width = 3; /* this width is in bits */
fadt->day_alrm = 0x0d; /* rtc CMOS RAM offset */