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acpi: Zero-out MADT before filling it

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Otherwise flags field is pre-filled with random garbage.

Change-Id: Ie5dc0720183b8ba07561341003f28a86ffce911e
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86246
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
This commit is contained in:
Vladimir Serbinenko 2025-02-03 03:16:25 +01:00 • committed by Matt DeVillier
commit 4985079b16
1 changed files with 2 additions and 0 deletions
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src/acpi/acpi.c
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@ -138,6 +138,8 @@ static void acpi_create_madt(acpi_header_t *header, void *unused)
acpi_madt_t *madt = (acpi_madt_t *)header;
unsigned long current = (unsigned long)madt + sizeof(acpi_madt_t);
memset(madt, 0, sizeof(*madt));
if (acpi_fill_header(header, "APIC", MADT, sizeof(acpi_madt_t)) != CB_SUCCESS)
return;