[J-u-boot.git] / lib / smbios.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015, Bin Meng <[email protected]>
 *
 * Adapted from coreboot src/arch/x86/smbios.c
 */

#include <common.h>
#include <dm.h>
#include <env.h>
#include <mapmem.h>
#include <smbios.h>
#include <sysinfo.h>
#include <tables_csum.h>
#include <version.h>
#ifdef CONFIG_CPU
#include <cpu.h>
#include <dm/uclass-internal.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

/**
 * struct smbios_ctx - context for writing SMBIOS tables
 *
 * @node:	node containing the information to write (ofnode_null() if none)
 * @dev:	sysinfo device to use (NULL if none)
 * @eos:	end-of-string pointer for the table being processed. This is set
 *		up when we start processing a table
 * @next_ptr:	pointer to the start of the next string to be added. When the
 *		table is nopt empty, this points to the byte after the \0 of the
 *		previous string.
 * @last_str:	points to the last string that was written to the table, or NULL
 *		if none
 */
struct smbios_ctx {
	ofnode node;
	struct udevice *dev;
	char *eos;
	char *next_ptr;
	char *last_str;
};

/**
 * Function prototype to write a specific type of SMBIOS structure
 *
 * @addr:	start address to write the structure
 * @handle:	the structure's handle, a unique 16-bit number
 * @ctx:	context for writing the tables
 * Return:	size of the structure
 */
typedef int (*smbios_write_type)(ulong *addr, int handle,
				 struct smbios_ctx *ctx);

/**
 * 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.
 *
 * @ctx:	SMBIOS context
 * @str:	string to add
 * Return:	string number in the string area (1 or more)
 */
static int smbios_add_string(struct smbios_ctx *ctx, const char *str)
{
	int i = 1;
	char *p = ctx->eos;

	if (!*str)
		str = "Unknown";

	for (;;) {
		if (!*p) {
			ctx->last_str = p;
			strcpy(p, str);
			p += strlen(str);
			*p++ = '\0';
			ctx->next_ptr = p;
			*p++ = '\0';

			return i;
		}

		if (!strcmp(p, str)) {
			ctx->last_str = p;
			return i;
		}

		p += strlen(p) + 1;
		i++;
	}
}

/**
 * smbios_add_prop_si() - Add a property from the devicetree or sysinfo
 *
 * Sysinfo is used if available, with a fallback to devicetree
 *
 * @ctx:	context for writing the tables
 * @prop:	property to write
 * Return:	0 if not found, else SMBIOS string number (1 or more)
 */
static int smbios_add_prop_si(struct smbios_ctx *ctx, const char *prop,
			      int sysinfo_id)
{
	if (sysinfo_id && ctx->dev) {
		char val[SMBIOS_STR_MAX];
		int ret;

		ret = sysinfo_get_str(ctx->dev, sysinfo_id, sizeof(val), val);
		if (!ret)
			return smbios_add_string(ctx, val);
	}
	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
		const char *str;

		str = ofnode_read_string(ctx->node, prop);
		if (str)
			return smbios_add_string(ctx, str);
	}

	return 0;
}

/**
 * smbios_add_prop() - Add a property from the devicetree
 *
 * @prop:	property to write
 * Return:	0 if not found, else SMBIOS string number (1 or more)
 */
static int smbios_add_prop(struct smbios_ctx *ctx, const char *prop)
{
	return smbios_add_prop_si(ctx, prop, SYSINFO_ID_NONE);
}

static void smbios_set_eos(struct smbios_ctx *ctx, char *eos)
{
	ctx->eos = eos;
	ctx->next_ptr = eos;
	ctx->last_str = NULL;
}

int smbios_update_version(const char *version)
{
	char *ptr = gd->smbios_version;
	uint old_len, len;

	if (!ptr)
		return log_ret(-ENOENT);

	/*
	 * This string is supposed to have at least enough bytes and is
	 * padded with spaces. Update it, taking care not to move the
	 * \0 terminator, so that other strings in the string table
	 * are not disturbed. See smbios_add_string()
	 */
	old_len = strnlen(ptr, SMBIOS_STR_MAX);
	len = strnlen(version, SMBIOS_STR_MAX);
	if (len > old_len)
		return log_ret(-ENOSPC);

	log_debug("Replacing SMBIOS type 0 version string '%s'\n", ptr);
	memcpy(ptr, version, len);
#ifdef LOG_DEBUG
	print_buffer((ulong)ptr, ptr, 1, old_len + 1, 0);
#endif

	return 0;
}

/**
 * smbios_string_table_len() - compute the string area size
 *
 * This computes the size of the string area including the string terminator.
 *
 * @ctx:	SMBIOS context
 * Return:	string area size
 */
static int smbios_string_table_len(const struct smbios_ctx *ctx)
{
	/* Allow for the final \0 after all strings */
	return (ctx->next_ptr + 1) - ctx->eos;
}

static int smbios_write_type0(ulong *current, int handle,
			      struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);
	t->vendor = smbios_add_string(ctx, "U-Boot");

	t->bios_ver = smbios_add_prop(ctx, "version");
	if (!t->bios_ver)
		t->bios_ver = smbios_add_string(ctx, PLAIN_VERSION);
	if (t->bios_ver)
		gd->smbios_version = ctx->last_str;
	log_debug("smbios_version = %p: '%s'\n", gd->smbios_version,
		  gd->smbios_version);
#ifdef LOG_DEBUG
	print_buffer((ulong)gd->smbios_version, gd->smbios_version,
		     1, strlen(gd->smbios_version) + 1, 0);
#endif
	t->bios_release_date = smbios_add_string(ctx, 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_ext2 |= BIOS_CHARACTERISTICS_EXT2_UEFI;
#endif
	t->bios_characteristics_ext2 |= BIOS_CHARACTERISTICS_EXT2_TARGET;

	/* bios_major_release has only one byte, so drop century */
	t->bios_major_release = U_BOOT_VERSION_NUM % 100;
	t->bios_minor_release = U_BOOT_VERSION_NUM_PATCH;
	t->ec_major_release = 0xff;
	t->ec_minor_release = 0xff;

	len = t->length + smbios_string_table_len(ctx);
	*current += len;
	unmap_sysmem(t);

	return len;
}

static int smbios_write_type1(ulong *current, int handle,
			      struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);
	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
	t->product_name = smbios_add_prop(ctx, "product");
	t->version = smbios_add_prop_si(ctx, "version",
					SYSINFO_ID_SMBIOS_SYSTEM_VERSION);
	if (serial_str) {
		t->serial_number = smbios_add_string(ctx, serial_str);
		strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
	} else {
		t->serial_number = smbios_add_prop(ctx, "serial");
	}
	t->sku_number = smbios_add_prop(ctx, "sku");
	t->family = smbios_add_prop(ctx, "family");

	len = t->length + smbios_string_table_len(ctx);
	*current += len;
	unmap_sysmem(t);

	return len;
}

static int smbios_write_type2(ulong *current, int handle,
			      struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);
	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
	t->product_name = smbios_add_prop(ctx, "product");
	t->version = smbios_add_prop_si(ctx, "version",
					SYSINFO_ID_SMBIOS_BASEBOARD_VERSION);
	t->asset_tag_number = smbios_add_prop(ctx, "asset-tag");
	t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
	t->board_type = SMBIOS_BOARD_MOTHERBOARD;

	len = t->length + smbios_string_table_len(ctx);
	*current += len;
	unmap_sysmem(t);

	return len;
}

static int smbios_write_type3(ulong *current, int handle,
			      struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);
	t->manufacturer = smbios_add_prop(ctx, "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(ctx);
	*current += len;
	unmap_sysmem(t);

	return len;
}

static void smbios_write_type4_dm(struct smbios_type4 *t,
				  struct smbios_ctx *ctx)
{
	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_plat *plat = dev_get_parent_plat(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(ctx, vendor);
	t->processor_version = smbios_add_string(ctx, name);
}

static int smbios_write_type4(ulong *current, int handle,
			      struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);
	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
	smbios_write_type4_dm(t, ctx);
	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(ctx);
	*current += len;
	unmap_sysmem(t);

	return len;
}

static int smbios_write_type32(ulong *current, int handle,
			       struct smbios_ctx *ctx)
{
	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);
	smbios_set_eos(ctx, t->eos);

	*current += len;
	unmap_sysmem(t);

	return len;
}

static int smbios_write_type127(ulong *current, int handle,
				struct smbios_ctx *ctx)
{
	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, "bios", },
	{ 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 smbios_ctx ctx;
	ulong table_addr;
	ulong tables;
	int len = 0;
	int max_struct_size = 0;
	int handle = 0;
	char *istart;
	int isize;
	int i;

	ctx.node = ofnode_null();
	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
		uclass_first_device(UCLASS_SYSINFO, &ctx.dev);
		if (ctx.dev)
			parent_node = dev_read_subnode(ctx.dev, "smbios");
	} else {
		ctx.dev = NULL;
	}

	/* 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;
		int tmp;

		method = &smbios_write_funcs[i];
		if (IS_ENABLED(CONFIG_OF_CONTROL) && method->subnode_name)
			ctx.node = ofnode_find_subnode(parent_node,
						       method->subnode_name);
		tmp = method->write((ulong *)&addr, handle++, &ctx);

		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;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
721e992a BM	2	/*
	3	* Copyright (C) 2015, Bin Meng <[email protected]>
	4	*
	5	* Adapted from coreboot src/arch/x86/smbios.c
721e992a BM	6	*/
	7
	8	#include <common.h>
78227d4e	9	#include <dm.h>
7b51b576	10	#include <env.h>
a2505fc8	11	#include <mapmem.h>
4b6dddc2	12	#include <smbios.h>
07c9e683	13	#include <sysinfo.h>
4b6dddc2	14	#include <tables_csum.h>
721e992a	15	#include <version.h>
96476206 AG	16	#ifdef CONFIG_CPU
96476206 AG	17	#include <cpu.h>
96476206 AG	18	#include <dm/uclass-internal.h>
96476206 AG	19	#endif
721e992a	20
e9adaa75 SG	21	DECLARE_GLOBAL_DATA_PTR;
e9adaa75 SG	22
1e8989ad SG	23	/**
	24	* struct smbios_ctx - context for writing SMBIOS tables
	25	*
	26	* @node: node containing the information to write (ofnode_null() if none)
	27	* @dev: sysinfo device to use (NULL if none)
0c95fff3 SG	28	* @eos: end-of-string pointer for the table being processed. This is set
0c95fff3 SG	29	* up when we start processing a table
fd3b826d SG	30	* @next_ptr: pointer to the start of the next string to be added. When the
	31	* table is nopt empty, this points to the byte after the \0 of the
	32	* previous string.
e9adaa75 SG	33	* @last_str: points to the last string that was written to the table, or NULL
e9adaa75 SG	34	* if none
1e8989ad SG	35	*/
	36	struct smbios_ctx {
	37	ofnode node;
	38	struct udevice *dev;
0c95fff3	39	char *eos;
fd3b826d	40	char *next_ptr;
e9adaa75	41	char *last_str;
1e8989ad SG	42	};
1e8989ad SG	43
0e89b859 SG	44	/**
	45	* Function prototype to write a specific type of SMBIOS structure
	46	*
	47	* @addr: start address to write the structure
	48	* @handle: the structure's handle, a unique 16-bit number
1e8989ad	49	* @ctx: context for writing the tables
8c6532d7	50	* Return: size of the structure
0e89b859	51	*/
1e8989ad SG	52	typedef int (smbios_write_type)(ulong addr, int handle,
1e8989ad SG	53	struct smbios_ctx *ctx);
0e89b859	54
44ffb6f0 SG	55	/**
	56	* struct smbios_write_method - Information about a table-writing function
	57	*
	58	* @write: Function to call
	59	* @subnode_name: Name of subnode which has the information for this function,
	60	* NULL if none
	61	*/
	62	struct smbios_write_method {
	63	smbios_write_type write;
	64	const char *subnode_name;
	65	};
	66
721e992a BM	67	/**
	68	* smbios_add_string() - add a string to the string area
	69	*
	70	* This adds a string to the string area which is appended directly after
	71	* the formatted portion of an SMBIOS structure.
	72	*
0c95fff3	73	* @ctx: SMBIOS context
721e992a	74	* @str: string to add
8c6532d7	75	* Return: string number in the string area (1 or more)
721e992a	76	*/
0c95fff3	77	static int smbios_add_string(struct smbios_ctx ctx, const char str)
721e992a BM	78	{
721e992a BM	79	int i = 1;
0c95fff3 SG	80	char *p = ctx->eos;
0c95fff3 SG	81
00a871d3 HS	82	if (!*str)
00a871d3 HS	83	str = "Unknown";
721e992a BM	84
	85	for (;;) {
	86	if (!*p) {
e9adaa75	87	ctx->last_str = p;
721e992a BM	88	strcpy(p, str);
	89	p += strlen(str);
	90	*p++ = '\0';
fd3b826d	91	ctx->next_ptr = p;
721e992a BM	92	*p++ = '\0';
	93
	94	return i;
	95	}
	96
e9adaa75 SG	97	if (!strcmp(p, str)) {
e9adaa75 SG	98	ctx->last_str = p;
721e992a	99	return i;
e9adaa75	100	}
721e992a BM	101
	102	p += strlen(p) + 1;
	103	i++;
	104	}
	105	}
	106
44ffb6f0	107	/**
07c9e683 SG	108	* smbios_add_prop_si() - Add a property from the devicetree or sysinfo
	109	*
	110	* Sysinfo is used if available, with a fallback to devicetree
44ffb6f0	111	*
1e8989ad	112	* @ctx: context for writing the tables
44ffb6f0	113	* @prop: property to write
8c6532d7	114	* Return: 0 if not found, else SMBIOS string number (1 or more)
44ffb6f0	115	*/
07c9e683 SG	116	static int smbios_add_prop_si(struct smbios_ctx ctx, const char prop,
07c9e683 SG	117	int sysinfo_id)
44ffb6f0	118	{
07c9e683 SG	119	if (sysinfo_id && ctx->dev) {
	120	char val[SMBIOS_STR_MAX];
	121	int ret;
	122
	123	ret = sysinfo_get_str(ctx->dev, sysinfo_id, sizeof(val), val);
	124	if (!ret)
	125	return smbios_add_string(ctx, val);
	126	}
e4f8e543 SG	127	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
	128	const char *str;
	129
1e8989ad	130	str = ofnode_read_string(ctx->node, prop);
e4f8e543	131	if (str)
0c95fff3	132	return smbios_add_string(ctx, str);
e4f8e543	133	}
44ffb6f0 SG	134
	135	return 0;
	136	}
	137
07c9e683 SG	138	/**
	139	* smbios_add_prop() - Add a property from the devicetree
	140	*
	141	* @prop: property to write
8c6532d7	142	* Return: 0 if not found, else SMBIOS string number (1 or more)
07c9e683 SG	143	*/
	144	static int smbios_add_prop(struct smbios_ctx ctx, const char prop)
	145	{
	146	return smbios_add_prop_si(ctx, prop, SYSINFO_ID_NONE);
	147	}
	148
0c95fff3 SG	149	static void smbios_set_eos(struct smbios_ctx ctx, char eos)
	150	{
	151	ctx->eos = eos;
fd3b826d	152	ctx->next_ptr = eos;
e9adaa75 SG	153	ctx->last_str = NULL;
	154	}
	155
	156	int smbios_update_version(const char *version)
	157	{
	158	char *ptr = gd->smbios_version;
	159	uint old_len, len;
	160
	161	if (!ptr)
	162	return log_ret(-ENOENT);
	163
	164	/*
	165	* This string is supposed to have at least enough bytes and is
	166	* padded with spaces. Update it, taking care not to move the
	167	* \0 terminator, so that other strings in the string table
	168	* are not disturbed. See smbios_add_string()
	169	*/
	170	old_len = strnlen(ptr, SMBIOS_STR_MAX);
	171	len = strnlen(version, SMBIOS_STR_MAX);
	172	if (len > old_len)
	173	return log_ret(-ENOSPC);
	174
	175	log_debug("Replacing SMBIOS type 0 version string '%s'\n", ptr);
	176	memcpy(ptr, version, len);
	177	#ifdef LOG_DEBUG
	178	print_buffer((ulong)ptr, ptr, 1, old_len + 1, 0);
	179	#endif
	180
	181	return 0;
0c95fff3 SG	182	}
0c95fff3 SG	183
721e992a BM	184	/**
	185	* smbios_string_table_len() - compute the string area size
	186	*
	187	* This computes the size of the string area including the string terminator.
	188	*
fd3b826d	189	* @ctx: SMBIOS context
8c6532d7	190	* Return: string area size
721e992a	191	*/
fd3b826d	192	static int smbios_string_table_len(const struct smbios_ctx *ctx)
721e992a	193	{
fd3b826d SG	194	/* Allow for the final \0 after all strings */
fd3b826d SG	195	return (ctx->next_ptr + 1) - ctx->eos;
721e992a BM	196	}
721e992a BM	197
1e8989ad SG	198	static int smbios_write_type0(ulong *current, int handle,
1e8989ad SG	199	struct smbios_ctx *ctx)
721e992a	200	{
a2505fc8	201	struct smbios_type0 *t;
721e992a BM	202	int len = sizeof(struct smbios_type0);
721e992a BM	203
a2505fc8	204	t = map_sysmem(*current, len);
721e992a BM	205	memset(t, 0, sizeof(struct smbios_type0));
721e992a BM	206	fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
0c95fff3 SG	207	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	208	t->vendor = smbios_add_string(ctx, "U-Boot");
e9adaa75 SG	209
	210	t->bios_ver = smbios_add_prop(ctx, "version");
	211	if (!t->bios_ver)
	212	t->bios_ver = smbios_add_string(ctx, PLAIN_VERSION);
	213	if (t->bios_ver)
	214	gd->smbios_version = ctx->last_str;
	215	log_debug("smbios_version = %p: '%s'\n", gd->smbios_version,
	216	gd->smbios_version);
	217	#ifdef LOG_DEBUG
	218	print_buffer((ulong)gd->smbios_version, gd->smbios_version,
	219	1, strlen(gd->smbios_version) + 1, 0);
	220	#endif
0c95fff3	221	t->bios_release_date = smbios_add_string(ctx, U_BOOT_DMI_DATE);
e663b350	222	#ifdef CONFIG_ROM_SIZE
721e992a	223	t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
e663b350	224	#endif
721e992a BM	225	t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED \|
	226	BIOS_CHARACTERISTICS_SELECTABLE_BOOT \|
	227	BIOS_CHARACTERISTICS_UPGRADEABLE;
	228	#ifdef CONFIG_GENERATE_ACPI_TABLE
	229	t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
e663b350 AG	230	#endif
e663b350 AG	231	#ifdef CONFIG_EFI_LOADER
ff192304	232	t->bios_characteristics_ext2 \|= BIOS_CHARACTERISTICS_EXT2_UEFI;
721e992a	233	#endif
ff192304	234	t->bios_characteristics_ext2 \|= BIOS_CHARACTERISTICS_EXT2_TARGET;
e663b350	235
7617f996 SG	236	/* bios_major_release has only one byte, so drop century */
	237	t->bios_major_release = U_BOOT_VERSION_NUM % 100;
	238	t->bios_minor_release = U_BOOT_VERSION_NUM_PATCH;
721e992a BM	239	t->ec_major_release = 0xff;
	240	t->ec_minor_release = 0xff;
	241
fd3b826d	242	len = t->length + smbios_string_table_len(ctx);
721e992a	243	*current += len;
a2505fc8	244	unmap_sysmem(t);
721e992a BM	245
	246	return len;
	247	}
	248
1e8989ad SG	249	static int smbios_write_type1(ulong *current, int handle,
1e8989ad SG	250	struct smbios_ctx *ctx)
721e992a	251	{
a2505fc8	252	struct smbios_type1 *t;
721e992a	253	int len = sizeof(struct smbios_type1);
00caae6d	254	char *serial_str = env_get("serial#");
721e992a	255
a2505fc8	256	t = map_sysmem(*current, len);
721e992a BM	257	memset(t, 0, sizeof(struct smbios_type1));
721e992a BM	258	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
0c95fff3 SG	259	smbios_set_eos(ctx, t->eos);
	260	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
	261	t->product_name = smbios_add_prop(ctx, "product");
07c9e683 SG	262	t->version = smbios_add_prop_si(ctx, "version",
07c9e683 SG	263	SYSINFO_ID_SMBIOS_SYSTEM_VERSION);
6fb580d7	264	if (serial_str) {
0c95fff3	265	t->serial_number = smbios_add_string(ctx, serial_str);
44ffb6f0 SG	266	strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
44ffb6f0 SG	267	} else {
0c95fff3	268	t->serial_number = smbios_add_prop(ctx, "serial");
6fb580d7	269	}
0c95fff3 SG	270	t->sku_number = smbios_add_prop(ctx, "sku");
0c95fff3 SG	271	t->family = smbios_add_prop(ctx, "family");
721e992a	272
fd3b826d	273	len = t->length + smbios_string_table_len(ctx);
721e992a	274	*current += len;
a2505fc8	275	unmap_sysmem(t);
721e992a BM	276
	277	return len;
	278	}
	279
1e8989ad SG	280	static int smbios_write_type2(ulong *current, int handle,
1e8989ad SG	281	struct smbios_ctx *ctx)
721e992a	282	{
a2505fc8	283	struct smbios_type2 *t;
721e992a BM	284	int len = sizeof(struct smbios_type2);
721e992a BM	285
a2505fc8	286	t = map_sysmem(*current, len);
721e992a BM	287	memset(t, 0, sizeof(struct smbios_type2));
721e992a BM	288	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
0c95fff3 SG	289	smbios_set_eos(ctx, t->eos);
	290	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
	291	t->product_name = smbios_add_prop(ctx, "product");
07c9e683 SG	292	t->version = smbios_add_prop_si(ctx, "version",
07c9e683 SG	293	SYSINFO_ID_SMBIOS_BASEBOARD_VERSION);
0c95fff3	294	t->asset_tag_number = smbios_add_prop(ctx, "asset-tag");
721e992a BM	295	t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
	296	t->board_type = SMBIOS_BOARD_MOTHERBOARD;
	297
fd3b826d	298	len = t->length + smbios_string_table_len(ctx);
721e992a	299	*current += len;
a2505fc8	300	unmap_sysmem(t);
721e992a BM	301
	302	return len;
	303	}
	304
1e8989ad SG	305	static int smbios_write_type3(ulong *current, int handle,
1e8989ad SG	306	struct smbios_ctx *ctx)
721e992a	307	{
a2505fc8	308	struct smbios_type3 *t;
721e992a BM	309	int len = sizeof(struct smbios_type3);
721e992a BM	310
a2505fc8	311	t = map_sysmem(*current, len);
721e992a BM	312	memset(t, 0, sizeof(struct smbios_type3));
721e992a BM	313	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
0c95fff3 SG	314	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	315	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
721e992a BM	316	t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
	317	t->bootup_state = SMBIOS_STATE_SAFE;
	318	t->power_supply_state = SMBIOS_STATE_SAFE;
	319	t->thermal_state = SMBIOS_STATE_SAFE;
	320	t->security_status = SMBIOS_SECURITY_NONE;
	321
fd3b826d	322	len = t->length + smbios_string_table_len(ctx);
721e992a	323	*current += len;
a2505fc8	324	unmap_sysmem(t);
721e992a BM	325
	326	return len;
	327	}
	328
1e8989ad SG	329	static void smbios_write_type4_dm(struct smbios_type4 *t,
1e8989ad SG	330	struct smbios_ctx *ctx)
96476206 AG	331	{
	332	u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
	333	const char *vendor = "Unknown";
	334	const char *name = "Unknown";
	335
	336	#ifdef CONFIG_CPU
	337	char processor_name[49];
	338	char vendor_name[49];
78227d4e	339	struct udevice *cpu = NULL;
96476206	340
78227d4e SG	341	uclass_find_first_device(UCLASS_CPU, &cpu);
78227d4e SG	342	if (cpu) {
8a8d24bd	343	struct cpu_plat *plat = dev_get_parent_plat(cpu);
96476206 AG	344
	345	if (plat->family)
	346	processor_family = plat->family;
	347	t->processor_id[0] = plat->id[0];
	348	t->processor_id[1] = plat->id[1];
	349
78227d4e	350	if (!cpu_get_vendor(cpu, vendor_name, sizeof(vendor_name)))
96476206	351	vendor = vendor_name;
78227d4e	352	if (!cpu_get_desc(cpu, processor_name, sizeof(processor_name)))
96476206 AG	353	name = processor_name;
	354	}
	355	#endif
	356
	357	t->processor_family = processor_family;
0c95fff3 SG	358	t->processor_manufacturer = smbios_add_string(ctx, vendor);
0c95fff3 SG	359	t->processor_version = smbios_add_string(ctx, name);
96476206 AG	360	}
96476206 AG	361
1e8989ad SG	362	static int smbios_write_type4(ulong *current, int handle,
1e8989ad SG	363	struct smbios_ctx *ctx)
721e992a	364	{
a2505fc8	365	struct smbios_type4 *t;
721e992a	366	int len = sizeof(struct smbios_type4);
721e992a	367
a2505fc8	368	t = map_sysmem(*current, len);
721e992a BM	369	memset(t, 0, sizeof(struct smbios_type4));
721e992a BM	370	fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
0c95fff3	371	smbios_set_eos(ctx, t->eos);
721e992a	372	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
1e8989ad	373	smbios_write_type4_dm(t, ctx);
721e992a BM	374	t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
	375	t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
	376	t->l1_cache_handle = 0xffff;
	377	t->l2_cache_handle = 0xffff;
	378	t->l3_cache_handle = 0xffff;
	379	t->processor_family2 = t->processor_family;
	380
fd3b826d	381	len = t->length + smbios_string_table_len(ctx);
721e992a	382	*current += len;
a2505fc8	383	unmap_sysmem(t);
721e992a BM	384
	385	return len;
	386	}
	387
1e8989ad SG	388	static int smbios_write_type32(ulong *current, int handle,
1e8989ad SG	389	struct smbios_ctx *ctx)
721e992a	390	{
a2505fc8	391	struct smbios_type32 *t;
721e992a BM	392	int len = sizeof(struct smbios_type32);
721e992a BM	393
a2505fc8	394	t = map_sysmem(*current, len);
721e992a BM	395	memset(t, 0, sizeof(struct smbios_type32));
721e992a BM	396	fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
0c95fff3	397	smbios_set_eos(ctx, t->eos);
721e992a BM	398
721e992a BM	399	*current += len;
a2505fc8	400	unmap_sysmem(t);
721e992a BM	401
	402	return len;
	403	}
	404
1e8989ad SG	405	static int smbios_write_type127(ulong *current, int handle,
1e8989ad SG	406	struct smbios_ctx *ctx)
721e992a	407	{
a2505fc8	408	struct smbios_type127 *t;
721e992a BM	409	int len = sizeof(struct smbios_type127);
721e992a BM	410
a2505fc8	411	t = map_sysmem(*current, len);
721e992a BM	412	memset(t, 0, sizeof(struct smbios_type127));
	413	fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
	414
	415	*current += len;
a2505fc8	416	unmap_sysmem(t);
721e992a BM	417
	418	return len;
	419	}
	420
44ffb6f0	421	static struct smbios_write_method smbios_write_funcs[] = {
e9adaa75	422	{ smbios_write_type0, "bios", },
44ffb6f0 SG	423	{ smbios_write_type1, "system", },
	424	{ smbios_write_type2, "baseboard", },
	425	{ smbios_write_type3, "chassis", },
	426	{ smbios_write_type4, },
	427	{ smbios_write_type32, },
	428	{ smbios_write_type127 },
721e992a BM	429	};
721e992a BM	430
42fd8c19	431	ulong write_smbios_table(ulong addr)
721e992a	432	{
44ffb6f0	433	ofnode parent_node = ofnode_null();
721e992a	434	struct smbios_entry *se;
1e8989ad	435	struct smbios_ctx ctx;
a2505fc8	436	ulong table_addr;
42fd8c19	437	ulong tables;
721e992a BM	438	int len = 0;
	439	int max_struct_size = 0;
	440	int handle = 0;
	441	char *istart;
	442	int isize;
	443	int i;
	444
1e8989ad	445	ctx.node = ofnode_null();
78227d4e	446	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
1e8989ad SG	447	uclass_first_device(UCLASS_SYSINFO, &ctx.dev);
	448	if (ctx.dev)
	449	parent_node = dev_read_subnode(ctx.dev, "smbios");
	450	} else {
	451	ctx.dev = NULL;
78227d4e SG	452	}
78227d4e SG	453
721e992a BM	454	/* 16 byte align the table address */
	455	addr = ALIGN(addr, 16);
	456
a2505fc8	457	se = map_sysmem(addr, sizeof(struct smbios_entry));
721e992a BM	458	memset(se, 0, sizeof(struct smbios_entry));
	459
	460	addr += sizeof(struct smbios_entry);
	461	addr = ALIGN(addr, 16);
	462	tables = addr;
	463
	464	/* populate minimum required tables */
	465	for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
44ffb6f0	466	const struct smbios_write_method *method;
44ffb6f0 SG	467	int tmp;
	468
	469	method = &smbios_write_funcs[i];
	470	if (IS_ENABLED(CONFIG_OF_CONTROL) && method->subnode_name)
1e8989ad SG	471	ctx.node = ofnode_find_subnode(parent_node,
	472	method->subnode_name);
	473	tmp = method->write((ulong *)&addr, handle++, &ctx);
60a4df32	474
721e992a BM	475	max_struct_size = max(max_struct_size, tmp);
	476	len += tmp;
	477	}
	478
	479	memcpy(se->anchor, "_SM_", 4);
	480	se->length = sizeof(struct smbios_entry);
	481	se->major_ver = SMBIOS_MAJOR_VER;
	482	se->minor_ver = SMBIOS_MINOR_VER;
	483	se->max_struct_size = max_struct_size;
	484	memcpy(se->intermediate_anchor, "_DMI_", 5);
	485	se->struct_table_length = len;
a2505fc8 SG	486
	487	/*
	488	* We must use a pointer here so things work correctly on sandbox. The
	489	* user of this table is not aware of the mapping of addresses to
	490	* sandbox's DRAM buffer.
	491	*/
	492	table_addr = (ulong)map_sysmem(tables, 0);
	493	if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX) {
	494	/*
	495	* We need to put this >32-bit pointer into the table but the
	496	* field is only 32 bits wide.
	497	*/
	498	printf("WARNING: SMBIOS table_address overflow %llx\n",
	499	(unsigned long long)table_addr);
	500	table_addr = 0;
	501	}
	502	se->struct_table_address = table_addr;
	503
721e992a BM	504	se->struct_count = handle;
	505
	506	/* calculate checksums */
	507	istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
	508	isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
	509	se->intermediate_checksum = table_compute_checksum(istart, isize);
	510	se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
a2505fc8	511	unmap_sysmem(se);
721e992a BM	512
	513	return addr;
	514	}