| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <assert.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <hob_cxlnode.h> |
| #include <intelblocks/cpulib.h> |
| #include <soc/msr.h> |
| #include <soc/numa.h> |
| #include <soc/pci_devs.h> |
| #include <soc/soc_util.h> |
| #include <soc/util.h> |
| #include <pc80/mc146818rtc.h> |
| |
| const EWL_PRIVATE_DATA *get_ewl_hob(void) |
| { |
| size_t hob_size; |
| static const EWL_PRIVATE_DATA *hob; |
| const uint8_t ewl_id_hob_guid[16] = FSP_HOB_EWLID_GUID; |
| |
| if (hob != NULL) |
| return hob; |
| |
| hob = fsp_find_extension_hob_by_guid(ewl_id_hob_guid, &hob_size); |
| assert(hob != NULL && hob_size != 0); |
| return hob; |
| } |
| |
| const SYSTEM_INFO_VAR *get_system_info_hob(void) |
| { |
| size_t hob_size; |
| static const SYSTEM_INFO_VAR *hob; |
| const uint8_t system_info_hob_guid[16] = FSP_HOB_SYSTEMINFO_GUID; |
| |
| if (hob != NULL) |
| return hob; |
| |
| hob = fsp_find_extension_hob_by_guid(system_info_hob_guid, &hob_size); |
| assert(hob != NULL && hob_size != 0); |
| return hob; |
| } |
| |
| const struct SystemMemoryMapHob *get_system_memory_map(void) |
| { |
| size_t hob_size; |
| const uint8_t mem_hob_guid[16] = FSP_SYSTEM_MEMORYMAP_HOB_GUID; |
| const struct SystemMemoryMapHob **memmap_addr; |
| |
| memmap_addr = (const struct SystemMemoryMapHob **)fsp_find_extension_hob_by_guid( |
| mem_hob_guid, &hob_size); |
| /* hob_size is the size of the 8-byte address not the hob data */ |
| assert(memmap_addr != NULL && hob_size != 0); |
| /* assert the pointer to the hob is not NULL */ |
| assert(*memmap_addr != NULL); |
| |
| return *memmap_addr; |
| } |
| |
| const struct SystemMemoryMapElement *get_system_memory_map_elment(uint8_t *num) |
| { |
| const struct SystemMemoryMapHob *hob = get_system_memory_map(); |
| if (!hob) |
| return NULL; |
| |
| *num = hob->numberEntries; |
| return hob->Element; |
| } |
| |
| bool is_pcie_iio_stack_res(const STACK_RES *res) |
| { |
| return res->Personality == TYPE_UBOX_IIO; |
| } |
| |
| bool is_ubox_stack_res(const STACK_RES *res) |
| { |
| return res->Personality == TYPE_UBOX; |
| } |
| |
| bool is_ioat_iio_stack_res(const STACK_RES *res) |
| { |
| return res->Personality == TYPE_DINO; |
| } |
| |
| /* |
| * Given a stack resource, figure out whether the corresponding stack has |
| * CXL device. |
| * It goes through pds (proximity domains) structure to see if there is any |
| * generic initiator has device with bus # falls between bus base and |
| * bus limit. |
| */ |
| bool is_iio_cxl_stack_res(const STACK_RES *res) |
| { |
| /* pds should be setup ahead of this call */ |
| assert(pds.num_pds); |
| |
| for (uint8_t i = 0; i < pds.num_pds; i++) { |
| if (pds.pds[i].pd_type == PD_TYPE_PROCESSOR) |
| continue; |
| |
| uint32_t bus = PCI_BDF(pds.pds[i].dev) >> 20; |
| if (bus >= res->BusBase && bus <= res->BusLimit) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| const CXL_NODE_SOCKET *get_cxl_node(void) |
| { |
| size_t hob_size; |
| static const CXL_NODE_SOCKET *hob; |
| static bool hob_check = 0; |
| const uint8_t fsp_hob_cxl_node_socket_guid[16] = FSP_HOB_CXLNODE_GUID; |
| |
| if (hob_check == 1) |
| return hob; |
| |
| hob = fsp_find_extension_hob_by_guid(fsp_hob_cxl_node_socket_guid, &hob_size); |
| hob_check = 1; |
| if (hob == NULL || hob_size == 0) |
| printk(BIOS_DEBUG, |
| "FSP_HOB_CXLNODE_GUID not found: CXL may not be installed\n"); |
| return hob; |
| } |
| |
| uint8_t get_cxl_node_count(void) |
| { |
| const CXL_NODE_SOCKET *hob = get_cxl_node(); |
| uint8_t count = 0; |
| |
| if (hob != NULL) { |
| for (uint8_t skt_id = 0; skt_id < MAX_SOCKET; skt_id++) |
| count += hob[skt_id].CxlNodeCount; |
| } |
| |
| return count; |
| } |
| |
| /* Returns the UBOX(offset) bus number for socket0 */ |
| uint8_t socket0_get_ubox_busno(uint8_t offset) |
| { |
| const IIO_UDS *hob = get_iio_uds(); |
| |
| for (int stack = 0; stack < MAX_LOGIC_IIO_STACK; ++stack) { |
| if (hob->PlatformData.IIO_resource[0].StackRes[stack].Personality |
| == TYPE_UBOX) |
| return (hob->PlatformData.IIO_resource[0].StackRes[stack].BusBase |
| + offset); |
| } |
| die("Unable to locate UBOX BUS NO"); |
| } |
| |
| void bios_done_msr(void *unused) |
| { |
| msr_t msr = rdmsr(MSR_BIOS_DONE); |
| if (!(msr.lo & XEON_SP_ENABLE_IA_UNTRUSTED)) { /* if already locked skip update */ |
| msr.lo |= XEON_SP_ENABLE_IA_UNTRUSTED; |
| wrmsr(MSR_BIOS_DONE, msr); |
| } |
| } |
| |
| void soc_set_mrc_cold_boot_flag(bool cold_boot_required) |
| { |
| uint8_t mrc_status = cmos_read(CMOS_OFFSET_MRC_STATUS); |
| uint8_t new_mrc_status = (mrc_status & 0xfe) | cold_boot_required; |
| printk(BIOS_SPEW, "MRC status: 0x%02x want 0x%02x\n", mrc_status, new_mrc_status); |
| if (new_mrc_status != mrc_status) |
| 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); |
| } |