mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-17 15:38:51 +09:00
![Bin Meng](/assets/img/avatar_default.png)
System Management BIOS (SMBIOS) is a specification for how motherboard and system vendors present management information about their products in a standard format by extending the BIOS interface on Intel architecture systems. As of today the latest spec is 3.0 and can be downloaded from DMTF website. This commit adds a simple and minimum required implementation. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
270 lines
6.9 KiB
C
270 lines
6.9 KiB
C
/*
|
|
* 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_SYS_VENDOR);
|
|
t->product_name = smbios_add_string(t->eos, CONFIG_SYS_BOARD);
|
|
|
|
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_SYS_VENDOR);
|
|
t->product_name = smbios_add_string(t->eos, CONFIG_SYS_BOARD);
|
|
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_SYS_VENDOR);
|
|
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;
|
|
}
|