intelblocks/systemagent: Add ACPI table generation hook

In preparation of generating DMAR tables, provide the hook in SoC scope
for the systemagent to write ACPI tables. The complete functionality is
SoC-specific. Therefore the entry hook is defined as a weak function which
can be overridden by SoC code. If the SoC does not have support for
generating DMAR tables this hook will do no harm.

Change-Id: I1333ae2b79f1a855e6f3bb39bf534da170ddc9e1
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/30989
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/acpi.h b/src/soc/intel/common/block/include/intelblocks/acpi.h
index 029174f1ff..e615ccd213 100644
--- a/src/soc/intel/common/block/include/intelblocks/acpi.h
+++ b/src/soc/intel/common/block/include/intelblocks/acpi.h
@@ -81,6 +81,11 @@ uint32_t acpi_fill_soc_wake(uint32_t generic_pm1_en,
 /* Chipset specific settings for filling up fadt table */
 void soc_fill_fadt(acpi_fadt_t *fadt);
 
+/* Chipset specific settings for filling up dmar table */
+unsigned long sa_write_acpi_tables(struct device *dev,
+				   unsigned long current,
+				   struct acpi_rsdp *rsdp);
+
 /* Return the polarity flag for SCI IRQ */
 int soc_madt_sci_irq_polarity(int sci);