Re: [coreboot] question about dsdt table in coreboot

[Patrick Georgi]

Am Sonntag, den 29.09.2013, 10:46 +0800 schrieb [e-mail]:
> Dear Maillinglist,
> I have question about dsdt table  in coreboot.
> How can we add dsdt table into coreboot?

By adding dsdt.asl to your mainboard's directory (ie.
src/mainboard/$vendor/$board/dsdt.asl) and enabling
HAVE_ACPI_TABLES in Kconfig, which in turn enables GENERATE_ACPI_TABLES.

As you can see in src/arch/x86/Makefile.inc (lines 270+),
dsdt.asl and ssdt[2-5].asl are considered automatically if they're
present.
> In acpi_tables.c,we will see that：
> dsdt = (acpi_header_t *) current;
> memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
> current += dsdt->length;
> memcpy(dsdt, &AmlCode, dsdt->length);
> but how can we get the address of Amlcode。

The build system takes care of that.

Regards,
Patrick