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lib/smbios.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> * * Adapted from coreboot src/arch/x86/smbios.c |
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*/ #include <common.h> |
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#include <mapmem.h> |
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#include <smbios.h> #include <tables_csum.h> |
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#include <version.h> |
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#ifdef CONFIG_CPU #include <cpu.h> #include <dm.h> #include <dm/uclass-internal.h> #endif |
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/** * smbios_add_string() - add a string to the string area * * This adds a string to the string area which is appended directly after * the formatted portion of an SMBIOS structure. * * @start: string area start address * @str: string to add * @return: string number in the string area */ static int smbios_add_string(char *start, const char *str) { int i = 1; char *p = start; for (;;) { if (!*p) { strcpy(p, str); p += strlen(str); *p++ = '\0'; *p++ = '\0'; return i; } if (!strcmp(p, str)) return i; p += strlen(p) + 1; i++; } } /** * smbios_string_table_len() - compute the string area size * * This computes the size of the string area including the string terminator. * * @start: string area start address * @return: string area size */ static int smbios_string_table_len(char *start) { char *p = start; int i, len = 0; while (*p) { i = strlen(p) + 1; p += i; len += i; } return len + 1; } |
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static int smbios_write_type0(ulong *current, int handle) |
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{ |
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struct smbios_type0 *t; |
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int len = sizeof(struct smbios_type0); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type0)); fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle); t->vendor = smbios_add_string(t->eos, "U-Boot"); t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION); t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE); |
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#ifdef CONFIG_ROM_SIZE |
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t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1; |
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#endif |
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t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED | BIOS_CHARACTERISTICS_SELECTABLE_BOOT | BIOS_CHARACTERISTICS_UPGRADEABLE; #ifdef CONFIG_GENERATE_ACPI_TABLE t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI; #endif |
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#ifdef CONFIG_EFI_LOADER t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI; #endif |
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t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET; |
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t->bios_major_release = 0xff; t->bios_minor_release = 0xff; t->ec_major_release = 0xff; t->ec_minor_release = 0xff; len = t->length + smbios_string_table_len(t->eos); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static int smbios_write_type1(ulong *current, int handle) |
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{ |
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struct smbios_type1 *t; |
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int len = sizeof(struct smbios_type1); |
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char *serial_str = env_get("serial#"); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type1)); fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle); |
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME); |
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if (serial_str) { |
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strncpy((char *)t->uuid, serial_str, sizeof(t->uuid)); |
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t->serial_number = smbios_add_string(t->eos, serial_str); } |
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len = t->length + smbios_string_table_len(t->eos); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static int smbios_write_type2(ulong *current, int handle) |
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{ |
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struct smbios_type2 *t; |
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int len = sizeof(struct smbios_type2); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type2)); fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle); |
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME); |
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t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING; t->board_type = SMBIOS_BOARD_MOTHERBOARD; len = t->length + smbios_string_table_len(t->eos); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static int smbios_write_type3(ulong *current, int handle) |
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{ |
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struct smbios_type3 *t; |
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int len = sizeof(struct smbios_type3); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type3)); fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle); |
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); |
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t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP; t->bootup_state = SMBIOS_STATE_SAFE; t->power_supply_state = SMBIOS_STATE_SAFE; t->thermal_state = SMBIOS_STATE_SAFE; t->security_status = SMBIOS_SECURITY_NONE; len = t->length + smbios_string_table_len(t->eos); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static void smbios_write_type4_dm(struct smbios_type4 *t) { u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN; const char *vendor = "Unknown"; const char *name = "Unknown"; #ifdef CONFIG_CPU char processor_name[49]; char vendor_name[49]; struct udevice *dev = NULL; uclass_find_first_device(UCLASS_CPU, &dev); if (dev) { struct cpu_platdata *plat = dev_get_parent_platdata(dev); if (plat->family) processor_family = plat->family; t->processor_id[0] = plat->id[0]; t->processor_id[1] = plat->id[1]; if (!cpu_get_vendor(dev, vendor_name, sizeof(vendor_name))) vendor = vendor_name; if (!cpu_get_desc(dev, processor_name, sizeof(processor_name))) name = processor_name; } #endif t->processor_family = processor_family; t->processor_manufacturer = smbios_add_string(t->eos, vendor); t->processor_version = smbios_add_string(t->eos, name); } |
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static int smbios_write_type4(ulong *current, int handle) |
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{ |
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struct smbios_type4 *t; |
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int len = sizeof(struct smbios_type4); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type4)); fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle); t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL; |
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smbios_write_type4_dm(t); |
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t->status = SMBIOS_PROCESSOR_STATUS_ENABLED; t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE; t->l1_cache_handle = 0xffff; t->l2_cache_handle = 0xffff; t->l3_cache_handle = 0xffff; t->processor_family2 = t->processor_family; len = t->length + smbios_string_table_len(t->eos); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static int smbios_write_type32(ulong *current, int handle) |
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{ |
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struct smbios_type32 *t; |
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int len = sizeof(struct smbios_type32); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type32)); fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle); *current += len; |
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unmap_sysmem(t); |
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return len; } |
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static int smbios_write_type127(ulong *current, int handle) |
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{ |
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struct smbios_type127 *t; |
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int len = sizeof(struct smbios_type127); |
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t = map_sysmem(*current, len); |
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memset(t, 0, sizeof(struct smbios_type127)); fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle); *current += len; |
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unmap_sysmem(t); |
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return len; } static smbios_write_type smbios_write_funcs[] = { smbios_write_type0, smbios_write_type1, smbios_write_type2, smbios_write_type3, smbios_write_type4, smbios_write_type32, smbios_write_type127 }; |
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ulong write_smbios_table(ulong addr) |
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{ struct smbios_entry *se; |
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ulong table_addr; |
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ulong tables; |
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int len = 0; int max_struct_size = 0; int handle = 0; char *istart; int isize; int i; /* 16 byte align the table address */ addr = ALIGN(addr, 16); |
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se = map_sysmem(addr, sizeof(struct smbios_entry)); |
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memset(se, 0, sizeof(struct smbios_entry)); addr += sizeof(struct smbios_entry); addr = ALIGN(addr, 16); tables = addr; /* populate minimum required tables */ for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) { |
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int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++); |
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max_struct_size = max(max_struct_size, tmp); len += tmp; } memcpy(se->anchor, "_SM_", 4); se->length = sizeof(struct smbios_entry); se->major_ver = SMBIOS_MAJOR_VER; se->minor_ver = SMBIOS_MINOR_VER; se->max_struct_size = max_struct_size; memcpy(se->intermediate_anchor, "_DMI_", 5); se->struct_table_length = len; |
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/* * We must use a pointer here so things work correctly on sandbox. The * user of this table is not aware of the mapping of addresses to * sandbox's DRAM buffer. */ table_addr = (ulong)map_sysmem(tables, 0); if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX) { /* * We need to put this >32-bit pointer into the table but the * field is only 32 bits wide. */ printf("WARNING: SMBIOS table_address overflow %llx ", (unsigned long long)table_addr); table_addr = 0; } se->struct_table_address = table_addr; |
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se->struct_count = handle; /* calculate checksums */ istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET; isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET; se->intermediate_checksum = table_compute_checksum(istart, isize); se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry)); |
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unmap_sysmem(se); |
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return addr; } |