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/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Adapted from coreboot src/arch/x86/smbios.c
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <version.h>
#include <asm/cpu.h>
#include <asm/smbios.h>
#include <asm/tables.h>
DECLARE_GLOBAL_DATA_PTR;
/**
* 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;
}
static int smbios_write_type0(u32 *current, int handle)
{
struct smbios_type0 *t = (struct smbios_type0 *)*current;
int len = sizeof(struct smbios_type0);
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);
t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
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
t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
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;
return len;
}
static int smbios_write_type1(u32 *current, int handle)
{
struct smbios_type1 *t = (struct smbios_type1 *)*current;
int len = sizeof(struct smbios_type1);
memset(t, 0, sizeof(struct smbios_type1));
fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
len = t->length + smbios_string_table_len(t->eos);
*current += len;
return len;
}
static int smbios_write_type2(u32 *current, int handle)
{
struct smbios_type2 *t = (struct smbios_type2 *)*current;
int len = sizeof(struct smbios_type2);
memset(t, 0, sizeof(struct smbios_type2));
fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
t->board_type = SMBIOS_BOARD_MOTHERBOARD;
len = t->length + smbios_string_table_len(t->eos);
*current += len;
return len;
}
static int smbios_write_type3(u32 *current, int handle)
{
struct smbios_type3 *t = (struct smbios_type3 *)*current;
int len = sizeof(struct smbios_type3);
memset(t, 0, sizeof(struct smbios_type3));
fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
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;
return len;
}
static int smbios_write_type4(u32 *current, int handle)
{
struct smbios_type4 *t = (struct smbios_type4 *)*current;
int len = sizeof(struct smbios_type4);
const char *vendor;
char *name;
char processor_name[CPU_MAX_NAME_LEN];
struct cpuid_result res;
memset(t, 0, sizeof(struct smbios_type4));
fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
t->processor_family = gd->arch.x86;
vendor = cpu_vendor_name(gd->arch.x86_vendor);
t->processor_manufacturer = smbios_add_string(t->eos, vendor);
res = cpuid(1);
t->processor_id[0] = res.eax;
t->processor_id[1] = res.edx;
name = cpu_get_name(processor_name);
t->processor_version = smbios_add_string(t->eos, name);
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;
return len;
}
static int smbios_write_type32(u32 *current, int handle)
{
struct smbios_type32 *t = (struct smbios_type32 *)*current;
int len = sizeof(struct smbios_type32);
memset(t, 0, sizeof(struct smbios_type32));
fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
*current += len;
return len;
}
static int smbios_write_type127(u32 *current, int handle)
{
struct smbios_type127 *t = (struct smbios_type127 *)*current;
int len = sizeof(struct smbios_type127);
memset(t, 0, sizeof(struct smbios_type127));
fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
*current += len;
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
};
u32 write_smbios_table(u32 addr)
{
struct smbios_entry *se;
u32 tables;
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);
se = (struct smbios_entry *)addr;
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++) {
int tmp = smbios_write_funcs[i](&addr, handle++);
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;
se->struct_table_address = tables;
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));
return addr;
}
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