skylake: Move ACPI init to SOC instead of mainboard

Move some remaining ACPI init code to the SOC instead of being
done in each mainboard:

- acpi_create_gnvs is now a local function
- add a weak acpi_mainboard_gnvs() that can be used for mainboards
to override or set additional NVS
- add acpi_fill_madt() function for skylake
- remove acpi_create_serialio_ssdt() function as it is unused

BUG=chrome-os-partner:40635
BRANCH=none
TEST=emerge-glados coreboot

Change-Id: I52225e8d38ed846c29d44872e3f4d6ebaf4a7e52
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: c717bb418a0cb6002582572632e42b44b473f718
Original-Change-Id: I0910ac8ef25de265ae1fde16b68f6cbacedb4462
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/297800
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11581
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/skylake/acpi.c

@@ -22,6 +22,7 @@
 #include <arch/acpi.h>
 #include <arch/acpigen.h>
 #include <arch/io.h>
+#include <arch/ioapic.h>
 #include <arch/smp/mpspec.h>
 #include <cbmem.h>
 #include <chip.h>
@@ -167,7 +168,7 @@ static int get_cores_per_package(void)
 	return cores;
 }
 
-void acpi_init_gnvs(global_nvs_t *gnvs)
+static void acpi_create_gnvs(global_nvs_t *gnvs)
 {
 	const struct device *dev = dev_find_slot(0, PCH_DEVFN_LPC);
 	const struct soc_intel_skylake_config *config = dev->chip_info;
@@ -204,6 +205,18 @@ unsigned long acpi_fill_mcfg(unsigned long current)
 	return current;
 }
 
+unsigned long acpi_fill_madt(unsigned long current)
+{
+	/* Local APICs */
+	current = acpi_create_madt_lapics(current);
+
+	/* IOAPIC */
+	current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
+				2, IO_APIC_ADDR, 0);
+
+	return acpi_madt_irq_overrides(current);
+}
+
 void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 {
 	const uint16_t pmbase = ACPI_BASE_ADDRESS;
@@ -550,7 +563,6 @@ unsigned long southcluster_write_acpi_tables(device_t device,
 
 	ssdt2 = (acpi_header_t *)current;
 	memset(ssdt2, 0, sizeof(acpi_header_t));
-	acpi_create_serialio_ssdt(ssdt2);
 	if (ssdt2->length) {
 		current += ssdt2->length;
 		acpi_add_table(rsdp, ssdt2);
@@ -580,6 +592,7 @@ void southcluster_inject_dsdt(device_t device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
+		acpi_mainboard_gnvs(gnvs);
 		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
@@ -591,6 +604,6 @@ void southcluster_inject_dsdt(device_t device)
 	}
 }
 
-__attribute__((weak)) void acpi_create_serialio_ssdt(acpi_header_t *ssdt)
+__attribute__((weak)) void acpi_mainboard_gnvs(global_nvs_t *gnvs)
 {
 }

src/soc/intel/skylake/include/soc/acpi.h

@@ -30,10 +30,9 @@
 #define PSS_LATENCY_TRANSITION		10
 #define PSS_LATENCY_BUSMASTER		10
 
-void acpi_create_serialio_ssdt(acpi_header_t *ssdt);
 void acpi_fill_in_fadt(acpi_fadt_t *fadt);
 unsigned long acpi_madt_irq_overrides(unsigned long current);
-void acpi_init_gnvs(global_nvs_t *gnvs);
+void acpi_mainboard_gnvs(global_nvs_t *gnvs);
 void southcluster_inject_dsdt(device_t device);
 unsigned long southcluster_write_acpi_tables(device_t device,
 	unsigned long current, struct acpi_rsdp *rsdp);

src/soc/intel/skylake/include/soc/nvs.h

@@ -62,8 +62,6 @@ typedef struct {
 	chromeos_acpi_t chromeos;
 } __attribute__((packed)) global_nvs_t;
 
-void acpi_create_gnvs(global_nvs_t *gnvs);
-
 #if ENV_SMM
 /* Used in SMM to find the ACPI GNVS address */
 global_nvs_t *smm_get_gnvs(void);