2 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
4 * Adapted from coreboot src/arch/x86/smbios.c
6 * SPDX-License-Identifier: GPL-2.0+
11 #include <tables_csum.h>
16 #include <dm/uclass-internal.h>
19 DECLARE_GLOBAL_DATA_PTR;
22 * smbios_add_string() - add a string to the string area
24 * This adds a string to the string area which is appended directly after
25 * the formatted portion of an SMBIOS structure.
27 * @start: string area start address
29 * @return: string number in the string area
31 static int smbios_add_string(char *start, const char *str)
55 * smbios_string_table_len() - compute the string area size
57 * This computes the size of the string area including the string terminator.
59 * @start: string area start address
60 * @return: string area size
62 static int smbios_string_table_len(char *start)
76 static int smbios_write_type0(ulong *current, int handle)
78 struct smbios_type0 *t = (struct smbios_type0 *)*current;
79 int len = sizeof(struct smbios_type0);
81 memset(t, 0, sizeof(struct smbios_type0));
82 fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
83 t->vendor = smbios_add_string(t->eos, "U-Boot");
84 t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
85 t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
86 #ifdef CONFIG_ROM_SIZE
87 t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
89 t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
90 BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
91 BIOS_CHARACTERISTICS_UPGRADEABLE;
92 #ifdef CONFIG_GENERATE_ACPI_TABLE
93 t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
95 #ifdef CONFIG_EFI_LOADER
96 t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
98 t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
100 t->bios_major_release = 0xff;
101 t->bios_minor_release = 0xff;
102 t->ec_major_release = 0xff;
103 t->ec_minor_release = 0xff;
105 len = t->length + smbios_string_table_len(t->eos);
111 static int smbios_write_type1(ulong *current, int handle)
113 struct smbios_type1 *t = (struct smbios_type1 *)*current;
114 int len = sizeof(struct smbios_type1);
115 char *serial_str = env_get("serial#");
117 memset(t, 0, sizeof(struct smbios_type1));
118 fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
119 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
120 t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
122 strncpy((char*)t->uuid, serial_str, sizeof(t->uuid));
123 t->serial_number = smbios_add_string(t->eos, serial_str);
126 len = t->length + smbios_string_table_len(t->eos);
132 static int smbios_write_type2(ulong *current, int handle)
134 struct smbios_type2 *t = (struct smbios_type2 *)*current;
135 int len = sizeof(struct smbios_type2);
137 memset(t, 0, sizeof(struct smbios_type2));
138 fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
139 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
140 t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
141 t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
142 t->board_type = SMBIOS_BOARD_MOTHERBOARD;
144 len = t->length + smbios_string_table_len(t->eos);
150 static int smbios_write_type3(ulong *current, int handle)
152 struct smbios_type3 *t = (struct smbios_type3 *)*current;
153 int len = sizeof(struct smbios_type3);
155 memset(t, 0, sizeof(struct smbios_type3));
156 fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
157 t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
158 t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
159 t->bootup_state = SMBIOS_STATE_SAFE;
160 t->power_supply_state = SMBIOS_STATE_SAFE;
161 t->thermal_state = SMBIOS_STATE_SAFE;
162 t->security_status = SMBIOS_SECURITY_NONE;
164 len = t->length + smbios_string_table_len(t->eos);
170 static void smbios_write_type4_dm(struct smbios_type4 *t)
172 u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
173 const char *vendor = "Unknown";
174 const char *name = "Unknown";
177 char processor_name[49];
178 char vendor_name[49];
179 struct udevice *dev = NULL;
181 uclass_find_first_device(UCLASS_CPU, &dev);
183 struct cpu_platdata *plat = dev_get_parent_platdata(dev);
186 processor_family = plat->family;
187 t->processor_id[0] = plat->id[0];
188 t->processor_id[1] = plat->id[1];
190 if (!cpu_get_vendor(dev, vendor_name, sizeof(vendor_name)))
191 vendor = vendor_name;
192 if (!cpu_get_desc(dev, processor_name, sizeof(processor_name)))
193 name = processor_name;
197 t->processor_family = processor_family;
198 t->processor_manufacturer = smbios_add_string(t->eos, vendor);
199 t->processor_version = smbios_add_string(t->eos, name);
202 static int smbios_write_type4(ulong *current, int handle)
204 struct smbios_type4 *t = (struct smbios_type4 *)*current;
205 int len = sizeof(struct smbios_type4);
207 memset(t, 0, sizeof(struct smbios_type4));
208 fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
209 t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
210 smbios_write_type4_dm(t);
211 t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
212 t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
213 t->l1_cache_handle = 0xffff;
214 t->l2_cache_handle = 0xffff;
215 t->l3_cache_handle = 0xffff;
216 t->processor_family2 = t->processor_family;
218 len = t->length + smbios_string_table_len(t->eos);
224 static int smbios_write_type32(ulong *current, int handle)
226 struct smbios_type32 *t = (struct smbios_type32 *)*current;
227 int len = sizeof(struct smbios_type32);
229 memset(t, 0, sizeof(struct smbios_type32));
230 fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
237 static int smbios_write_type127(ulong *current, int handle)
239 struct smbios_type127 *t = (struct smbios_type127 *)*current;
240 int len = sizeof(struct smbios_type127);
242 memset(t, 0, sizeof(struct smbios_type127));
243 fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
250 static smbios_write_type smbios_write_funcs[] = {
260 ulong write_smbios_table(ulong addr)
262 struct smbios_entry *se;
265 int max_struct_size = 0;
271 /* 16 byte align the table address */
272 addr = ALIGN(addr, 16);
274 se = (struct smbios_entry *)(uintptr_t)addr;
275 memset(se, 0, sizeof(struct smbios_entry));
277 addr += sizeof(struct smbios_entry);
278 addr = ALIGN(addr, 16);
281 /* populate minimum required tables */
282 for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
283 int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
284 max_struct_size = max(max_struct_size, tmp);
288 memcpy(se->anchor, "_SM_", 4);
289 se->length = sizeof(struct smbios_entry);
290 se->major_ver = SMBIOS_MAJOR_VER;
291 se->minor_ver = SMBIOS_MINOR_VER;
292 se->max_struct_size = max_struct_size;
293 memcpy(se->intermediate_anchor, "_DMI_", 5);
294 se->struct_table_length = len;
295 se->struct_table_address = tables;
296 se->struct_count = handle;
298 /* calculate checksums */
299 istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
300 isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
301 se->intermediate_checksum = table_compute_checksum(istart, isize);
302 se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));