soc/intel/xeon_sp: Add memory type check utils

FSP memory type representations change across Xeon-SP SoCs.
This patch adds type check utils to abstract the differences.

TEST=intel/archercity CRB

Change-Id: I2f5f3c0f16dc50bc739146e46afce2e5fbf4f62c
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Signed-off-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80632
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

src/soc/intel/xeon_sp/cpx/soc_util.c

@@ -121,3 +121,18 @@ void get_iiostack_info(struct iiostack_resource *info)
 		}
 	}
 }
+
+bool is_memtype_reserved(uint16_t mem_type)
+{
+	return !!(mem_type & MEM_TYPE_RESERVED);
+}
+
+bool is_memtype_non_volatile(uint16_t mem_type)
+{
+	return !(mem_type & MEMTYPE_VOLATILE_MASK);
+}
+
+bool is_memtype_processor_attached(uint16_t mem_type)
+{
+	return true;
+}

src/soc/intel/xeon_sp/include/soc/util.h

@@ -19,6 +19,10 @@ bool soc_cpu_is_enabled(const size_t idx);
 void set_bios_init_completion(void);
 uint8_t soc_get_iio_ioapicid(int socket, int stack);
 
+bool is_memtype_non_volatile(uint16_t mem_type);
+bool is_memtype_reserved(uint16_t mem_type);
+bool is_memtype_processor_attached(uint16_t mem_type);
+
 struct iiostack_resource {
 	uint8_t     no_of_stacks;
 	STACK_RES   res[CONFIG_MAX_SOCKET * MAX_IIO_STACK];

src/soc/intel/xeon_sp/skx/soc_util.c

@@ -195,3 +195,18 @@ uint8_t soc_get_iio_ioapicid(int socket, int stack)
 	}
 	return ioapic_id;
 }
+
+bool is_memtype_reserved(uint16_t mem_type)
+{
+	return !!(mem_type & MEM_TYPE_RESERVED);
+}
+
+bool is_memtype_non_volatile(uint16_t mem_type)
+{
+	return !(mem_type & MEMTYPE_VOLATILE_MASK);
+}
+
+bool is_memtype_processor_attached(uint16_t mem_type)
+{
+	return true;
+}

src/soc/intel/xeon_sp/spr/soc_util.c

@@ -167,3 +167,24 @@ void soc_set_mrc_cold_boot_flag(bool cold_boot_required)
 		cmos_write(new_mrc_status, CMOS_OFFSET_MRC_STATUS);
 
 }
+
+bool is_memtype_reserved(uint16_t mem_type)
+{
+	return !!(mem_type & MEM_TYPE_RESERVED);
+}
+
+bool is_memtype_non_volatile(uint16_t mem_type)
+{
+	return !(mem_type & MEMTYPE_VOLATILE_MASK);
+}
+
+bool is_memtype_processor_attached(uint16_t mem_type)
+{
+	/*
+	 * Refer to the definition of MEM_TYPE enum type in
+	 * vendorcode/intel/fsp/fsp2_0/sapphirerapids_sp/MemoryMapDataHob.h,
+	 * values less than MemTypeCxlAccVolatileMem represents
+	 * processor attached memory
+	 */
+	return (mem_type < MemTypeCxlAccVolatileMem);
+}

src/soc/intel/xeon_sp/uncore_acpi.c

@@ -99,19 +99,17 @@ static unsigned int get_srat_memory_entries(acpi_srat_mem_t *srat_mem)
 			"ElementSize: 0x%x, type: %d, reserved: %d\n",
 			e, addr, mem_element->BaseAddress, size,
 			mem_element->ElementSize, mem_element->Type,
-			(mem_element->Type & MEM_TYPE_RESERVED));
+			is_memtype_reserved(mem_element->Type));
 
 		assert(mmap_index < MAX_ACPI_MEMORY_AFFINITY_COUNT);
 
 		/* skip reserved memory region */
-		if (mem_element->Type & MEM_TYPE_RESERVED)
+		if (is_memtype_reserved(mem_element->Type))
 			continue;
-#if CONFIG(SOC_INTEL_SAPPHIRERAPIDS_SP)
+		/* skip all non processor attached memory regions */
-		/* Skip all non processor attached memory regions */
+		if (CONFIG(SOC_INTEL_HAS_CXL) &&
-		/* In other words, skip all the types >= MemTypeCxlAccVolatileMem */
+			(!is_memtype_processor_attached(mem_element->Type)))
-		if (mem_element->Type >= MemTypeCxlAccVolatileMem)
 			continue;
-#endif
 
 		/* skip if this address is already added */
 		bool skip = false;
@@ -134,7 +132,7 @@ static unsigned int get_srat_memory_entries(acpi_srat_mem_t *srat_mem)
 		srat_mem[mmap_index].length_high = (uint32_t)(size >> 32);
 		srat_mem[mmap_index].proximity_domain = mem_element->SocketId;
 		srat_mem[mmap_index].flags = ACPI_SRAT_MEMORY_ENABLED;
-		if ((mem_element->Type & MEMTYPE_VOLATILE_MASK) == 0)
+		if (is_memtype_non_volatile(mem_element->Type))
 			srat_mem[mmap_index].flags |= ACPI_SRAT_MEMORY_NONVOLATILE;
 		++mmap_index;
 	}