1 files changed, 60 insertions, 0 deletions
diff --git a/src/soc/amd/phoenix/cpu.c b/src/soc/amd/phoenix/cpu.c
new file mode 100644
index 000000000000..e9a510f6c236
--- /dev/null
+++ b/src/soc/amd/phoenix/cpu.c
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for Phoenix */
+
+#include <acpi/acpi.h>
+#include <amdblocks/cpu.h>
+#include <amdblocks/iomap.h>
+#include <amdblocks/mca.h>
+#include <console/console.h>
+#include <cpu/amd/microcode.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/mp.h>
+#include <cpu/x86/mtrr.h>
+#include <acpi/acpi.h>
+#include <device/device.h>
+#include <soc/cpu.h>
+#include <soc/iomap.h>
+
+_Static_assert(CONFIG_MAX_CPUS == 16, "Do not override MAX_CPUS. To reduce the number of "
+	"available cores, use the downcore_mode and disable_smt devicetree settings instead.");
+
+/* MP and SMM loading initialization */
+
+void mp_init_cpus(struct bus *cpu_bus)
+{
+	extern const struct mp_ops amd_mp_ops_with_smm;
+	if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
+		die_with_post_code(POST_HW_INIT_FAILURE,
+				"mp_init_with_smm failed. Halting.\n");
+
+	/* pre_mp_init made the flash not cacheable. Reset to WP for performance. */
+	mtrr_use_temp_range(FLASH_BELOW_4GB_MAPPING_REGION_BASE,
+			    FLASH_BELOW_4GB_MAPPING_REGION_SIZE, MTRR_TYPE_WRPROT);
+
+	/* SMMINFO only needs to be set up when booting from S5 */
+	if (!acpi_is_wakeup_s3())
+		apm_control(APM_CNT_SMMINFO);
+}
+
+static void zen_2_3_init(struct device *dev)
+{
+	check_mca();
+	set_cstate_io_addr();
+
+	amd_update_microcode_from_cbfs();
+}
+
+static struct device_operations cpu_dev_ops = {
+	.init = zen_2_3_init,
+};
+
+static struct cpu_device_id cpu_table[] = {
+	{ X86_VENDOR_AMD, PHOENIX_A0_CPUID}, /* TODO: Update for Phoenix */
+	{ 0, 0 },
+};
+
+static const struct cpu_driver zen_2_3 __cpu_driver = {
+	.ops      = &cpu_dev_ops,
+	.id_table = cpu_table,
+};