lib/smbios.c - platform/external/u-boot - Gitiles

 // 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;
 }
	// 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;
	}