| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mp.h> |
| #include <cpu/intel/microcode.h> |
| #include <fsp/api.h> |
| #include <fsp/ppi/mp_service_ppi.h> |
| #include <intelblocks/cpulib.h> |
| #include <intelblocks/mp_init.h> |
| #include <types.h> |
| |
| #define BSP_CPU_SLOT 0 |
| |
| efi_return_status_t mp_get_number_of_processors(efi_uintn_t *number_of_processors, |
| efi_uintn_t *number_of_enabled_processors) |
| { |
| if (number_of_processors == NULL || number_of_enabled_processors == |
| NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| *number_of_processors = get_cpu_count(); |
| *number_of_enabled_processors = get_cpu_count(); |
| |
| return FSP_SUCCESS; |
| } |
| |
| efi_return_status_t mp_get_processor_info(efi_uintn_t processor_number, |
| efi_processor_information *processor_info_buffer) |
| { |
| int apicid; |
| uint8_t package, core, thread; |
| |
| if (cpu_index() < 0) |
| return FSP_DEVICE_ERROR; |
| |
| if (processor_info_buffer == NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| if (processor_number >= get_cpu_count()) |
| return FSP_NOT_FOUND; |
| |
| apicid = cpu_get_apic_id(processor_number); |
| |
| if (apicid < 0) |
| return FSP_DEVICE_ERROR; |
| |
| processor_info_buffer->ProcessorId = apicid; |
| |
| processor_info_buffer->StatusFlag = PROCESSOR_HEALTH_STATUS_BIT |
| | PROCESSOR_ENABLED_BIT; |
| |
| if (processor_number == BSP_CPU_SLOT) |
| processor_info_buffer->StatusFlag |= PROCESSOR_AS_BSP_BIT; |
| |
| /* Fill EFI_CPU_PHYSICAL_LOCATION structure information */ |
| get_cpu_topology_from_apicid(apicid, &package, &core, &thread); |
| |
| processor_info_buffer->Location.Package = package; |
| processor_info_buffer->Location.Core = core; |
| processor_info_buffer->Location.Thread = thread; |
| |
| return FSP_SUCCESS; |
| } |
| |
| efi_return_status_t mp_startup_all_aps(efi_ap_procedure procedure, |
| bool run_serial, efi_uintn_t timeout_usec, void *argument) |
| { |
| if (cpu_index() < 0) |
| return FSP_DEVICE_ERROR; |
| |
| if (procedure == NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| if (mp_run_on_all_aps((void *)procedure, argument, timeout_usec, !run_serial) != |
| CB_SUCCESS) { |
| printk(BIOS_DEBUG, "%s: Exit with Failure\n", __func__); |
| return FSP_NOT_STARTED; |
| } |
| |
| return FSP_SUCCESS; |
| } |
| |
| efi_return_status_t mp_startup_all_cpus(efi_ap_procedure procedure, |
| efi_uintn_t timeout_usec, void *argument) |
| { |
| if (cpu_index() < 0) |
| return FSP_DEVICE_ERROR; |
| |
| if (procedure == NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| /* Run on BSP */ |
| procedure(argument); |
| |
| /* |
| * Run on APs Serially |
| * |
| * FIXME: As per MP service specification, edk2 is allowed to specify the mode |
| * in which a 'func' routine should be executed on APs (i.e. execute serially |
| * or concurrently). |
| * |
| * MP service API `StartupAllCPUs` doesn't specify such requirement. |
| * Hence, running the `CpuCacheInfoCollectCoreAndCacheData` |
| * (UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c#194) |
| * simultaneously on APs results in a coherency issue (hang while executing `func`) |
| * due to lack of acquiring a spin lock while accessing common data structure in |
| * multiprocessor environment. |
| */ |
| if (mp_run_on_all_aps((void *)procedure, argument, timeout_usec, false) != |
| CB_SUCCESS) { |
| printk(BIOS_DEBUG, "%s: Exit with Failure\n", __func__); |
| return FSP_NOT_STARTED; |
| } |
| |
| return FSP_SUCCESS; |
| } |
| |
| efi_return_status_t mp_startup_this_ap(efi_ap_procedure procedure, |
| efi_uintn_t processor_number, efi_uintn_t timeout_usec, void *argument) |
| { |
| if (cpu_index() < 0) |
| return FSP_DEVICE_ERROR; |
| |
| if (processor_number > get_cpu_count()) |
| return FSP_NOT_FOUND; |
| |
| if (processor_number == BSP_CPU_SLOT) |
| return FSP_INVALID_PARAMETER; |
| |
| if (procedure == NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| if (mp_run_on_aps((void *)procedure, argument, |
| processor_number, timeout_usec) != CB_SUCCESS) { |
| printk(BIOS_DEBUG, "%s: Exit with Failure\n", __func__); |
| return FSP_NOT_STARTED; |
| } |
| |
| return FSP_SUCCESS; |
| } |
| |
| efi_return_status_t mp_identify_processor(efi_uintn_t *processor_number) |
| { |
| int index; |
| |
| if (processor_number == NULL) |
| return FSP_INVALID_PARAMETER; |
| |
| index = cpu_index(); |
| |
| if (index < 0) |
| return FSP_DEVICE_ERROR; |
| |
| *processor_number = index; |
| |
| return FSP_SUCCESS; |
| } |