1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
5 * Adapted from coreboot src/arch/x86/smbios.c
12 #include <tables_csum.h>
17 #include <dm/uclass-internal.h>
21 * smbios_add_string() - add a string to the string area
23 * This adds a string to the string area which is appended directly after
24 * the formatted portion of an SMBIOS structure.
26 * @start: string area start address
28 * @return: string number in the string area
30 static int smbios_add_string(char *start, const char *str)
56 * smbios_string_table_len() - compute the string area size
58 * This computes the size of the string area including the string terminator.
60 * @start: string area start address
61 * @return: string area size
63 static int smbios_string_table_len(char *start)
77 static int smbios_write_type0(ulong *current, int handle)
79 struct smbios_type0 *t;
80 int len = sizeof(struct smbios_type0);
82 t = map_sysmem(*current, len);
83 memset(t, 0, sizeof(struct smbios_type0));
84 fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
85 t->vendor = smbios_add_string(t->eos, "U-Boot");
86 t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
87 t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
88 #ifdef CONFIG_ROM_SIZE
89 t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
91 t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
92 BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
93 BIOS_CHARACTERISTICS_UPGRADEABLE;
94 #ifdef CONFIG_GENERATE_ACPI_TABLE
95 t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
97 #ifdef CONFIG_EFI_LOADER
98 t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
100 t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
102 t->bios_major_release = 0xff;
103 t->bios_minor_release = 0xff;
104 t->ec_major_release = 0xff;
105 t->ec_minor_release = 0xff;
107 len = t->length + smbios_string_table_len(t->eos);
114 static int smbios_write_type1(ulong *current, int handle)
116 struct smbios_type1 *t;
117 int len = sizeof(struct smbios_type1);
118 char *serial_str = env_get("serial#");
120 t = map_sysmem(*current, len);
121 memset(t, 0, sizeof(struct smbios_type1));
122 fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
123 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
124 t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
126 strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
127 t->serial_number = smbios_add_string(t->eos, serial_str);
130 len = t->length + smbios_string_table_len(t->eos);
137 static int smbios_write_type2(ulong *current, int handle)
139 struct smbios_type2 *t;
140 int len = sizeof(struct smbios_type2);
142 t = map_sysmem(*current, len);
143 memset(t, 0, sizeof(struct smbios_type2));
144 fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
145 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
146 t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
147 t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
148 t->board_type = SMBIOS_BOARD_MOTHERBOARD;
150 len = t->length + smbios_string_table_len(t->eos);
157 static int smbios_write_type3(ulong *current, int handle)
159 struct smbios_type3 *t;
160 int len = sizeof(struct smbios_type3);
162 t = map_sysmem(*current, len);
163 memset(t, 0, sizeof(struct smbios_type3));
164 fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
165 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
166 t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
167 t->bootup_state = SMBIOS_STATE_SAFE;
168 t->power_supply_state = SMBIOS_STATE_SAFE;
169 t->thermal_state = SMBIOS_STATE_SAFE;
170 t->security_status = SMBIOS_SECURITY_NONE;
172 len = t->length + smbios_string_table_len(t->eos);
179 static void smbios_write_type4_dm(struct smbios_type4 *t)
181 u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
182 const char *vendor = "Unknown";
183 const char *name = "Unknown";
186 char processor_name[49];
187 char vendor_name[49];
188 struct udevice *dev = NULL;
190 uclass_find_first_device(UCLASS_CPU, &dev);
192 struct cpu_platdata *plat = dev_get_parent_platdata(dev);
195 processor_family = plat->family;
196 t->processor_id[0] = plat->id[0];
197 t->processor_id[1] = plat->id[1];
199 if (!cpu_get_vendor(dev, vendor_name, sizeof(vendor_name)))
200 vendor = vendor_name;
201 if (!cpu_get_desc(dev, processor_name, sizeof(processor_name)))
202 name = processor_name;
206 t->processor_family = processor_family;
207 t->processor_manufacturer = smbios_add_string(t->eos, vendor);
208 t->processor_version = smbios_add_string(t->eos, name);
211 static int smbios_write_type4(ulong *current, int handle)
213 struct smbios_type4 *t;
214 int len = sizeof(struct smbios_type4);
216 t = map_sysmem(*current, len);
217 memset(t, 0, sizeof(struct smbios_type4));
218 fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
219 t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
220 smbios_write_type4_dm(t);
221 t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
222 t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
223 t->l1_cache_handle = 0xffff;
224 t->l2_cache_handle = 0xffff;
225 t->l3_cache_handle = 0xffff;
226 t->processor_family2 = t->processor_family;
228 len = t->length + smbios_string_table_len(t->eos);
235 static int smbios_write_type32(ulong *current, int handle)
237 struct smbios_type32 *t;
238 int len = sizeof(struct smbios_type32);
240 t = map_sysmem(*current, len);
241 memset(t, 0, sizeof(struct smbios_type32));
242 fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
250 static int smbios_write_type127(ulong *current, int handle)
252 struct smbios_type127 *t;
253 int len = sizeof(struct smbios_type127);
255 t = map_sysmem(*current, len);
256 memset(t, 0, sizeof(struct smbios_type127));
257 fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
265 static smbios_write_type smbios_write_funcs[] = {
275 ulong write_smbios_table(ulong addr)
277 struct smbios_entry *se;
281 int max_struct_size = 0;
287 /* 16 byte align the table address */
288 addr = ALIGN(addr, 16);
290 se = map_sysmem(addr, sizeof(struct smbios_entry));
291 memset(se, 0, sizeof(struct smbios_entry));
293 addr += sizeof(struct smbios_entry);
294 addr = ALIGN(addr, 16);
297 /* populate minimum required tables */
298 for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
299 int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
301 max_struct_size = max(max_struct_size, tmp);
305 memcpy(se->anchor, "_SM_", 4);
306 se->length = sizeof(struct smbios_entry);
307 se->major_ver = SMBIOS_MAJOR_VER;
308 se->minor_ver = SMBIOS_MINOR_VER;
309 se->max_struct_size = max_struct_size;
310 memcpy(se->intermediate_anchor, "_DMI_", 5);
311 se->struct_table_length = len;
314 * We must use a pointer here so things work correctly on sandbox. The
315 * user of this table is not aware of the mapping of addresses to
316 * sandbox's DRAM buffer.
318 table_addr = (ulong)map_sysmem(tables, 0);
319 if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX) {
321 * We need to put this >32-bit pointer into the table but the
322 * field is only 32 bits wide.
324 printf("WARNING: SMBIOS table_address overflow %llx\n",
325 (unsigned long long)table_addr);
328 se->struct_table_address = table_addr;
330 se->struct_count = handle;
332 /* calculate checksums */
333 istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
334 isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
335 se->intermediate_checksum = table_compute_checksum(istart, isize);
336 se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));