soc/intel/cannonlake: Switch to runtime generation of Intel Power Engine

The pep.asl file is being obsoleted by runtime generation, therefore
switch cannonlake boards to this method.

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Ic5343b0fd37eafac29a23846c8cfc3ca93d1821d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56010
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/soc/intel/cannonlake/Kconfig

@@ -80,6 +80,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_ACPI_CPPC
 	select SOC_INTEL_COMMON_BLOCK_ACPI_GPIO
 	select SOC_INTEL_COMMON_BLOCK_ACPI_LPIT
+	select SOC_INTEL_COMMON_BLOCK_ACPI_PEP
 	select SOC_INTEL_COMMON_BLOCK_CAR
 	select SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG
 	select SOC_INTEL_COMMON_BLOCK_CNVI

src/soc/intel/cannonlake/acpi/southbridge.asl

@@ -39,6 +39,3 @@
 
 /* GbE 0:1f.6 */
 #include <soc/intel/common/block/acpi/acpi/pch_glan.asl>
-
-/* Intel Power Engine Plug-in */
-#include <soc/intel/common/block/acpi/acpi/pep.asl>

src/soc/intel/cannonlake/pmc.c

@@ -4,6 +4,7 @@
 #include <console/console.h>
 #include <device/mmio.h>
 #include <device/device.h>
+#include <intelblocks/acpi.h>
 #include <intelblocks/pmc.h>
 #include <intelblocks/pmclib.h>
 #include <intelblocks/rtc.h>
@@ -119,10 +120,19 @@ static void soc_acpi_mode_init(struct device *dev)
 	pmc_set_acpi_mode();
 }
 
+static void pmc_fill_ssdt(const struct device *dev)
+{
+	if (CONFIG(SOC_INTEL_COMMON_BLOCK_ACPI_PEP))
+		generate_acpi_power_engine();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources	  = soc_pmc_read_resources,
 	.set_resources	  = noop_set_resources,
 	.init		  = soc_acpi_mode_init,
 	.enable		  = pmc_init,
+#if CONFIG(HAVE_ACPI_TABLES)
+	.acpi_fill_ssdt	  = pmc_fill_ssdt,
+#endif
 	.scan_bus	  = scan_static_bus,
 };