u-boot/lib/smbios.c
Simon Glass e4f8e543f1 smbios: Drop the unused Kconfig options
Now that we can use devicetree to specify this information, drop the old
CONFIG options.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-11-06 10:26:32 +08:00

396 lines
10 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Adapted from coreboot src/arch/x86/smbios.c
*/
#include <common.h>
#include <dm.h>
#include <env.h>
#include <mapmem.h>
#include <smbios.h>
#include <tables_csum.h>
#include <version.h>
#ifdef CONFIG_CPU
#include <cpu.h>
#include <dm/uclass-internal.h>
#endif
/**
* struct smbios_write_method - Information about a table-writing function
*
* @write: Function to call
* @subnode_name: Name of subnode which has the information for this function,
* NULL if none
*/
struct smbios_write_method {
smbios_write_type write;
const char *subnode_name;
};
/**
* 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 (1 or more)
*/
static int smbios_add_string(char *start, const char *str)
{
int i = 1;
char *p = start;
if (!*str)
str = "Unknown";
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_add_prop() - Add a property from the device tree
*
* @start: string area start address
* @node: node containing the information to write (ofnode_null() if none)
* @prop: property to write
* @return 0 if not found, else SMBIOS string number (1 or more)
*/
static int smbios_add_prop(char *start, ofnode node, const char *prop)
{
if (IS_ENABLED(CONFIG_OF_CONTROL)) {
const char *str;
str = ofnode_read_string(node, prop);
if (str)
return smbios_add_string(start, str);
}
return 0;
}
/**
* 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(ulong *current, int handle, ofnode node)
{
struct smbios_type0 *t;
int len = sizeof(struct smbios_type0);
t = map_sysmem(*current, len);
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);
#ifdef CONFIG_ROM_SIZE
t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
#endif
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
#ifdef CONFIG_EFI_LOADER
t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
#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;
unmap_sysmem(t);
return len;
}
static int smbios_write_type1(ulong *current, int handle, ofnode node)
{
struct smbios_type1 *t;
int len = sizeof(struct smbios_type1);
char *serial_str = env_get("serial#");
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type1));
fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
t->manufacturer = smbios_add_prop(t->eos, node, "manufacturer");
t->product_name = smbios_add_prop(t->eos, node, "product");
t->version = smbios_add_prop(t->eos, node, "version");
if (serial_str) {
t->serial_number = smbios_add_string(t->eos, serial_str);
strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
} else {
t->serial_number = smbios_add_prop(t->eos, node, "serial");
}
t->sku_number = smbios_add_prop(t->eos, node, "sku");
t->family = smbios_add_prop(t->eos, node, "family");
len = t->length + smbios_string_table_len(t->eos);
*current += len;
unmap_sysmem(t);
return len;
}
static int smbios_write_type2(ulong *current, int handle, ofnode node)
{
struct smbios_type2 *t;
int len = sizeof(struct smbios_type2);
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type2));
fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
t->manufacturer = smbios_add_prop(t->eos, node, "manufacturer");
t->product_name = smbios_add_prop(t->eos, node, "product");
t->asset_tag_number = smbios_add_prop(t->eos, node, "asset-tag");
t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
t->board_type = SMBIOS_BOARD_MOTHERBOARD;
len = t->length + smbios_string_table_len(t->eos);
*current += len;
unmap_sysmem(t);
return len;
}
static int smbios_write_type3(ulong *current, int handle, ofnode node)
{
struct smbios_type3 *t;
int len = sizeof(struct smbios_type3);
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type3));
fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
t->manufacturer = smbios_add_prop(t->eos, node, "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;
unmap_sysmem(t);
return len;
}
static void smbios_write_type4_dm(struct smbios_type4 *t, ofnode node)
{
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 *cpu = NULL;
uclass_find_first_device(UCLASS_CPU, &cpu);
if (cpu) {
struct cpu_platdata *plat = dev_get_parent_platdata(cpu);
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(cpu, vendor_name, sizeof(vendor_name)))
vendor = vendor_name;
if (!cpu_get_desc(cpu, 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);
}
static int smbios_write_type4(ulong *current, int handle, ofnode node)
{
struct smbios_type4 *t;
int len = sizeof(struct smbios_type4);
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type4));
fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
smbios_write_type4_dm(t, node);
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;
unmap_sysmem(t);
return len;
}
static int smbios_write_type32(ulong *current, int handle, ofnode node)
{
struct smbios_type32 *t;
int len = sizeof(struct smbios_type32);
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type32));
fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
*current += len;
unmap_sysmem(t);
return len;
}
static int smbios_write_type127(ulong *current, int handle, ofnode node)
{
struct smbios_type127 *t;
int len = sizeof(struct smbios_type127);
t = map_sysmem(*current, len);
memset(t, 0, sizeof(struct smbios_type127));
fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
*current += len;
unmap_sysmem(t);
return len;
}
static struct smbios_write_method smbios_write_funcs[] = {
{ smbios_write_type0, },
{ smbios_write_type1, "system", },
{ smbios_write_type2, "baseboard", },
{ smbios_write_type3, "chassis", },
{ smbios_write_type4, },
{ smbios_write_type32, },
{ smbios_write_type127 },
};
ulong write_smbios_table(ulong addr)
{
ofnode parent_node = ofnode_null();
struct smbios_entry *se;
struct udevice *dev;
ulong table_addr;
ulong tables;
int len = 0;
int max_struct_size = 0;
int handle = 0;
char *istart;
int isize;
int i;
if (IS_ENABLED(CONFIG_OF_CONTROL)) {
uclass_first_device(UCLASS_SYSINFO, &dev);
if (dev)
parent_node = dev_read_subnode(dev, "smbios");
}
/* 16 byte align the table address */
addr = ALIGN(addr, 16);
se = map_sysmem(addr, sizeof(struct smbios_entry));
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++) {
const struct smbios_write_method *method;
ofnode node = ofnode_null();
int tmp;
method = &smbios_write_funcs[i];
if (IS_ENABLED(CONFIG_OF_CONTROL) && method->subnode_name)
node = ofnode_find_subnode(parent_node,
method->subnode_name);
tmp = method->write((ulong *)&addr, handle++, node);
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;
/*
* 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\n",
(unsigned long long)table_addr);
table_addr = 0;
}
se->struct_table_address = table_addr;
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));
unmap_sysmem(se);
return addr;
}