/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include #include #include #include _Static_assert(CONFIG_MAX_CPUS == 8, "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, MENDOCINO_A0_CPUID}, { 0, 0 }, }; static const struct cpu_driver zen_2_3 __cpu_driver = { .ops = &cpu_dev_ops, .id_table = cpu_table, };