Per ACPI spec, the FACS table address must be aligned to a 64 byte boundary (Windows checks this, but Linux does not).
Signed-off-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Stefan Roese sr@denx.de Tested-by: Stefan Roese sr@denx.de
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Changes in v2: - Add comments before the 64 byte alignment for FACS
arch/x86/lib/acpi_table.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index 7cde9c8..056d012 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -339,7 +339,11 @@ u32 write_acpi_tables(u32 start) current = ALIGN(current, 16); xsdt = (struct acpi_xsdt *)current; current += sizeof(struct acpi_xsdt); - current = ALIGN(current, 16); + /* + * Per ACPI spec, the FACS table address must be aligned to a 64 byte + * boundary (Windows checks this, but Linux does not). + */ + current = ALIGN(current, 64);
/* clear all table memory */ memset((void *)start, 0, current - start);