soc/intel/common: Inject SMBIOS type 16 table

Add SMBIOS type 16 table for physical memory array, there's two item had
been left over.ECC and max capacity, as of now we set it to fixed value
as all the platform support by Intel common code don't support ECC
memory and so far the biggest capacity is 32GB.

BUG=b:129485635
TEST=Boot up with Sarien platform and check with dmidecode, the
following is the result:
Handle 0x000D, DMI type 16, 23 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 32 GB
        Error Information Handle: Not Provided
        Number Of Devices: 2

Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Change-Id: If9c5831956ef273c84d831a2b1572b3442eed961
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32286
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/block/systemagent/systemagent.c

@@ -21,6 +21,7 @@
 #include <device/pci_ids.h>
 #include <intelblocks/acpi.h>
 #include <intelblocks/systemagent.h>
+#include <smbios.h>
 #include <soc/iomap.h>
 #include <soc/pci_devs.h>
 #include <soc/systemagent.h>
@@ -275,6 +276,37 @@ static void systemagent_read_resources(struct device *dev)
 		sa_add_imr_resources(dev, &index);
 }
 
+#if CONFIG(GENERATE_SMBIOS_TABLES)
+static int sa_smbios_write_type_16(struct device *dev, int *handle,
+		unsigned long *current)
+{
+	struct smbios_type16 *t = (struct smbios_type16 *)*current;
+	int len = sizeof(struct smbios_type16);
+
+	struct memory_info *meminfo;
+	meminfo = cbmem_find(CBMEM_ID_MEMINFO);
+	if (meminfo == NULL)
+		return 0;	/* can't find mem info in cbmem */
+
+	memset(t, 0, sizeof(struct smbios_type16));
+	t->type = SMBIOS_PHYS_MEMORY_ARRAY;
+	t->handle = *handle;
+	t->length = len - 2;
+	t->location = MEMORY_ARRAY_LOCATION_SYSTEM_BOARD;
+	t->use = MEMORY_ARRAY_USE_SYSTEM;
+	/* TBD, meminfo hob have information about ECC */
+	t->memory_error_correction = MEMORY_ARRAY_ECC_NONE;
+	/* no error information handle available */
+	t->memory_error_information_handle = 0xFFFE;
+	t->maximum_capacity = 32 * (GiB / KiB); /* 32GB as default */
+	t->number_of_memory_devices = meminfo->dimm_cnt;
+
+	*current += len;
+	*handle += 1;
+	return len;
+}
+#endif
+
 void enable_power_aware_intr(void)
 {
 	uint8_t pair;
@@ -295,6 +327,9 @@ static struct device_operations systemagent_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.write_acpi_tables = sa_write_acpi_tables,
 #endif
+#if CONFIG(GENERATE_SMBIOS_TABLES)
+	.get_smbios_data = sa_smbios_write_type_16,
+#endif
 };
 
 static const unsigned short systemagent_ids[] = {