[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 <linux/stringify.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

/* Safeguard for checking that U_BOOT_VERSION_NUM macros are compatible with U_BOOT_DMI */
#if U_BOOT_VERSION_NUM < 2000 || U_BOOT_VERSION_NUM > 2099 || \
    U_BOOT_VERSION_NUM_PATCH < 1 || U_BOOT_VERSION_NUM_PATCH > 12
#error U_BOOT_VERSION_NUM macros are not compatible with DMI, fix U_BOOT_DMI macros
#endif

/*
 * U_BOOT_DMI_DATE contains BIOS Release Date in format mm/dd/yyyy.
 * BIOS Release Date is calculated from U-Boot version and fixed day 01.
 * So for U-Boot version 2021.04 it is calculated as "04/01/2021".
 * BIOS Release Date should contain date when code was released
 * and not when it was built or compiled.
 */
#if U_BOOT_VERSION_NUM_PATCH < 10
#define U_BOOT_DMI_MONTH "0" __stringify(U_BOOT_VERSION_NUM_PATCH)
#else
#define U_BOOT_DMI_MONTH __stringify(U_BOOT_VERSION_NUM_PATCH)
#endif
#define U_BOOT_DMI_DAY "01"
#define U_BOOT_DMI_YEAR __stringify(U_BOOT_VERSION_NUM)
#define U_BOOT_DMI_DATE U_BOOT_DMI_MONTH "/" U_BOOT_DMI_DAY "/" U_BOOT_DMI_YEAR

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");
	if (!t->manufacturer)
		t->manufacturer = smbios_add_string(ctx, "Unknown");
	t->product_name = smbios_add_prop(ctx, "product");
	if (!t->product_name)
		t->product_name = smbios_add_string(ctx, "Unknown 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");
	if (!t->manufacturer)
		t->manufacturer = smbios_add_string(ctx, "Unknown");
	t->product_name = smbios_add_prop(ctx, "product");
	if (!t->product_name)
		t->product_name = smbios_add_string(ctx, "Unknown 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");
	if (!t->manufacturer)
		t->manufacturer = smbios_add_string(ctx, "Unknown");
	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);
		addr = 0;
		goto out;
	}
	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));
out:
	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>
11275e4f	11	#include <linux/stringify.h>
a2505fc8	12	#include <mapmem.h>
4b6dddc2	13	#include <smbios.h>
07c9e683	14	#include <sysinfo.h>
4b6dddc2	15	#include <tables_csum.h>
721e992a	16	#include <version.h>
96476206 AG	17	#ifdef CONFIG_CPU
96476206 AG	18	#include <cpu.h>
96476206 AG	19	#include <dm/uclass-internal.h>
96476206 AG	20	#endif
721e992a	21
11275e4f T	22	/* Safeguard for checking that U_BOOT_VERSION_NUM macros are compatible with U_BOOT_DMI */
	23	#if U_BOOT_VERSION_NUM < 2000 \|\| U_BOOT_VERSION_NUM > 2099 \|\| \
	24	U_BOOT_VERSION_NUM_PATCH < 1 \|\| U_BOOT_VERSION_NUM_PATCH > 12
	25	#error U_BOOT_VERSION_NUM macros are not compatible with DMI, fix U_BOOT_DMI macros
	26	#endif
	27
	28	/*
	29	* U_BOOT_DMI_DATE contains BIOS Release Date in format mm/dd/yyyy.
	30	* BIOS Release Date is calculated from U-Boot version and fixed day 01.
	31	* So for U-Boot version 2021.04 it is calculated as "04/01/2021".
	32	* BIOS Release Date should contain date when code was released
	33	* and not when it was built or compiled.
	34	*/
	35	#if U_BOOT_VERSION_NUM_PATCH < 10
	36	#define U_BOOT_DMI_MONTH "0" __stringify(U_BOOT_VERSION_NUM_PATCH)
	37	#else
	38	#define U_BOOT_DMI_MONTH __stringify(U_BOOT_VERSION_NUM_PATCH)
	39	#endif
	40	#define U_BOOT_DMI_DAY "01"
	41	#define U_BOOT_DMI_YEAR __stringify(U_BOOT_VERSION_NUM)
	42	#define U_BOOT_DMI_DATE U_BOOT_DMI_MONTH "/" U_BOOT_DMI_DAY "/" U_BOOT_DMI_YEAR
	43
e9adaa75 SG	44	DECLARE_GLOBAL_DATA_PTR;
e9adaa75 SG	45
1e8989ad SG	46	/**
	47	* struct smbios_ctx - context for writing SMBIOS tables
	48	*
	49	* @node: node containing the information to write (ofnode_null() if none)
	50	* @dev: sysinfo device to use (NULL if none)
0c95fff3 SG	51	* @eos: end-of-string pointer for the table being processed. This is set
0c95fff3 SG	52	* up when we start processing a table
fd3b826d SG	53	* @next_ptr: pointer to the start of the next string to be added. When the
	54	* table is nopt empty, this points to the byte after the \0 of the
	55	* previous string.
e9adaa75 SG	56	* @last_str: points to the last string that was written to the table, or NULL
e9adaa75 SG	57	* if none
1e8989ad SG	58	*/
	59	struct smbios_ctx {
	60	ofnode node;
	61	struct udevice *dev;
0c95fff3	62	char *eos;
fd3b826d	63	char *next_ptr;
e9adaa75	64	char *last_str;
1e8989ad SG	65	};
1e8989ad SG	66
0e89b859 SG	67	/**
	68	* Function prototype to write a specific type of SMBIOS structure
	69	*
	70	* @addr: start address to write the structure
	71	* @handle: the structure's handle, a unique 16-bit number
1e8989ad	72	* @ctx: context for writing the tables
8c6532d7	73	* Return: size of the structure
0e89b859	74	*/
1e8989ad SG	75	typedef int (smbios_write_type)(ulong addr, int handle,
1e8989ad SG	76	struct smbios_ctx *ctx);
0e89b859	77
44ffb6f0 SG	78	/**
	79	* struct smbios_write_method - Information about a table-writing function
	80	*
	81	* @write: Function to call
	82	* @subnode_name: Name of subnode which has the information for this function,
	83	* NULL if none
	84	*/
	85	struct smbios_write_method {
	86	smbios_write_type write;
	87	const char *subnode_name;
	88	};
	89
721e992a BM	90	/**
	91	* smbios_add_string() - add a string to the string area
	92	*
	93	* This adds a string to the string area which is appended directly after
	94	* the formatted portion of an SMBIOS structure.
	95	*
0c95fff3	96	* @ctx: SMBIOS context
721e992a	97	* @str: string to add
8c6532d7	98	* Return: string number in the string area (1 or more)
721e992a	99	*/
0c95fff3	100	static int smbios_add_string(struct smbios_ctx ctx, const char str)
721e992a BM	101	{
721e992a BM	102	int i = 1;
0c95fff3 SG	103	char *p = ctx->eos;
0c95fff3 SG	104
00a871d3 HS	105	if (!*str)
00a871d3 HS	106	str = "Unknown";
721e992a BM	107
	108	for (;;) {
	109	if (!*p) {
e9adaa75	110	ctx->last_str = p;
721e992a BM	111	strcpy(p, str);
	112	p += strlen(str);
	113	*p++ = '\0';
fd3b826d	114	ctx->next_ptr = p;
721e992a BM	115	*p++ = '\0';
	116
	117	return i;
	118	}
	119
e9adaa75 SG	120	if (!strcmp(p, str)) {
e9adaa75 SG	121	ctx->last_str = p;
721e992a	122	return i;
e9adaa75	123	}
721e992a BM	124
	125	p += strlen(p) + 1;
	126	i++;
	127	}
	128	}
	129
44ffb6f0	130	/**
07c9e683 SG	131	* smbios_add_prop_si() - Add a property from the devicetree or sysinfo
	132	*
	133	* Sysinfo is used if available, with a fallback to devicetree
44ffb6f0	134	*
1e8989ad	135	* @ctx: context for writing the tables
44ffb6f0	136	* @prop: property to write
8c6532d7	137	* Return: 0 if not found, else SMBIOS string number (1 or more)
44ffb6f0	138	*/
07c9e683 SG	139	static int smbios_add_prop_si(struct smbios_ctx ctx, const char prop,
07c9e683 SG	140	int sysinfo_id)
44ffb6f0	141	{
07c9e683 SG	142	if (sysinfo_id && ctx->dev) {
	143	char val[SMBIOS_STR_MAX];
	144	int ret;
	145
	146	ret = sysinfo_get_str(ctx->dev, sysinfo_id, sizeof(val), val);
	147	if (!ret)
	148	return smbios_add_string(ctx, val);
	149	}
e4f8e543 SG	150	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
	151	const char *str;
	152
1e8989ad	153	str = ofnode_read_string(ctx->node, prop);
e4f8e543	154	if (str)
0c95fff3	155	return smbios_add_string(ctx, str);
e4f8e543	156	}
44ffb6f0 SG	157
	158	return 0;
	159	}
	160
07c9e683 SG	161	/**
	162	* smbios_add_prop() - Add a property from the devicetree
	163	*
	164	* @prop: property to write
8c6532d7	165	* Return: 0 if not found, else SMBIOS string number (1 or more)
07c9e683 SG	166	*/
	167	static int smbios_add_prop(struct smbios_ctx ctx, const char prop)
	168	{
	169	return smbios_add_prop_si(ctx, prop, SYSINFO_ID_NONE);
	170	}
	171
0c95fff3 SG	172	static void smbios_set_eos(struct smbios_ctx ctx, char eos)
	173	{
	174	ctx->eos = eos;
fd3b826d	175	ctx->next_ptr = eos;
e9adaa75 SG	176	ctx->last_str = NULL;
	177	}
	178
	179	int smbios_update_version(const char *version)
	180	{
	181	char *ptr = gd->smbios_version;
	182	uint old_len, len;
	183
	184	if (!ptr)
	185	return log_ret(-ENOENT);
	186
	187	/*
	188	* This string is supposed to have at least enough bytes and is
	189	* padded with spaces. Update it, taking care not to move the
	190	* \0 terminator, so that other strings in the string table
	191	* are not disturbed. See smbios_add_string()
	192	*/
	193	old_len = strnlen(ptr, SMBIOS_STR_MAX);
	194	len = strnlen(version, SMBIOS_STR_MAX);
	195	if (len > old_len)
	196	return log_ret(-ENOSPC);
	197
	198	log_debug("Replacing SMBIOS type 0 version string '%s'\n", ptr);
	199	memcpy(ptr, version, len);
	200	#ifdef LOG_DEBUG
	201	print_buffer((ulong)ptr, ptr, 1, old_len + 1, 0);
	202	#endif
	203
	204	return 0;
0c95fff3 SG	205	}
0c95fff3 SG	206
721e992a BM	207	/**
	208	* smbios_string_table_len() - compute the string area size
	209	*
	210	* This computes the size of the string area including the string terminator.
	211	*
fd3b826d	212	* @ctx: SMBIOS context
8c6532d7	213	* Return: string area size
721e992a	214	*/
fd3b826d	215	static int smbios_string_table_len(const struct smbios_ctx *ctx)
721e992a	216	{
fd3b826d SG	217	/* Allow for the final \0 after all strings */
fd3b826d SG	218	return (ctx->next_ptr + 1) - ctx->eos;
721e992a BM	219	}
721e992a BM	220
1e8989ad SG	221	static int smbios_write_type0(ulong *current, int handle,
1e8989ad SG	222	struct smbios_ctx *ctx)
721e992a	223	{
a2505fc8	224	struct smbios_type0 *t;
721e992a BM	225	int len = sizeof(struct smbios_type0);
721e992a BM	226
a2505fc8	227	t = map_sysmem(*current, len);
721e992a BM	228	memset(t, 0, sizeof(struct smbios_type0));
721e992a BM	229	fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
0c95fff3 SG	230	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	231	t->vendor = smbios_add_string(ctx, "U-Boot");
e9adaa75 SG	232
	233	t->bios_ver = smbios_add_prop(ctx, "version");
	234	if (!t->bios_ver)
	235	t->bios_ver = smbios_add_string(ctx, PLAIN_VERSION);
	236	if (t->bios_ver)
	237	gd->smbios_version = ctx->last_str;
	238	log_debug("smbios_version = %p: '%s'\n", gd->smbios_version,
	239	gd->smbios_version);
	240	#ifdef LOG_DEBUG
	241	print_buffer((ulong)gd->smbios_version, gd->smbios_version,
	242	1, strlen(gd->smbios_version) + 1, 0);
	243	#endif
0c95fff3	244	t->bios_release_date = smbios_add_string(ctx, U_BOOT_DMI_DATE);
e663b350	245	#ifdef CONFIG_ROM_SIZE
721e992a	246	t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
e663b350	247	#endif
721e992a BM	248	t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED \|
	249	BIOS_CHARACTERISTICS_SELECTABLE_BOOT \|
	250	BIOS_CHARACTERISTICS_UPGRADEABLE;
	251	#ifdef CONFIG_GENERATE_ACPI_TABLE
	252	t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
e663b350 AG	253	#endif
e663b350 AG	254	#ifdef CONFIG_EFI_LOADER
ff192304	255	t->bios_characteristics_ext2 \|= BIOS_CHARACTERISTICS_EXT2_UEFI;
721e992a	256	#endif
ff192304	257	t->bios_characteristics_ext2 \|= BIOS_CHARACTERISTICS_EXT2_TARGET;
e663b350	258
7617f996 SG	259	/* bios_major_release has only one byte, so drop century */
	260	t->bios_major_release = U_BOOT_VERSION_NUM % 100;
	261	t->bios_minor_release = U_BOOT_VERSION_NUM_PATCH;
721e992a BM	262	t->ec_major_release = 0xff;
	263	t->ec_minor_release = 0xff;
	264
fd3b826d	265	len = t->length + smbios_string_table_len(ctx);
721e992a	266	*current += len;
a2505fc8	267	unmap_sysmem(t);
721e992a BM	268
	269	return len;
	270	}
	271
1e8989ad SG	272	static int smbios_write_type1(ulong *current, int handle,
1e8989ad SG	273	struct smbios_ctx *ctx)
721e992a	274	{
a2505fc8	275	struct smbios_type1 *t;
721e992a	276	int len = sizeof(struct smbios_type1);
00caae6d	277	char *serial_str = env_get("serial#");
721e992a	278
a2505fc8	279	t = map_sysmem(*current, len);
721e992a BM	280	memset(t, 0, sizeof(struct smbios_type1));
721e992a BM	281	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
0c95fff3 SG	282	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	283	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
70e80666 IA	284	if (!t->manufacturer)
70e80666 IA	285	t->manufacturer = smbios_add_string(ctx, "Unknown");
0c95fff3	286	t->product_name = smbios_add_prop(ctx, "product");
70e80666 IA	287	if (!t->product_name)
70e80666 IA	288	t->product_name = smbios_add_string(ctx, "Unknown Product");
07c9e683 SG	289	t->version = smbios_add_prop_si(ctx, "version",
07c9e683 SG	290	SYSINFO_ID_SMBIOS_SYSTEM_VERSION);
6fb580d7	291	if (serial_str) {
0c95fff3	292	t->serial_number = smbios_add_string(ctx, serial_str);
44ffb6f0 SG	293	strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
44ffb6f0 SG	294	} else {
0c95fff3	295	t->serial_number = smbios_add_prop(ctx, "serial");
6fb580d7	296	}
0c95fff3 SG	297	t->sku_number = smbios_add_prop(ctx, "sku");
0c95fff3 SG	298	t->family = smbios_add_prop(ctx, "family");
721e992a	299
fd3b826d	300	len = t->length + smbios_string_table_len(ctx);
721e992a	301	*current += len;
a2505fc8	302	unmap_sysmem(t);
721e992a BM	303
	304	return len;
	305	}
	306
1e8989ad SG	307	static int smbios_write_type2(ulong *current, int handle,
1e8989ad SG	308	struct smbios_ctx *ctx)
721e992a	309	{
a2505fc8	310	struct smbios_type2 *t;
721e992a BM	311	int len = sizeof(struct smbios_type2);
721e992a BM	312
a2505fc8	313	t = map_sysmem(*current, len);
721e992a BM	314	memset(t, 0, sizeof(struct smbios_type2));
721e992a BM	315	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
0c95fff3 SG	316	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	317	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
70e80666 IA	318	if (!t->manufacturer)
70e80666 IA	319	t->manufacturer = smbios_add_string(ctx, "Unknown");
0c95fff3	320	t->product_name = smbios_add_prop(ctx, "product");
70e80666 IA	321	if (!t->product_name)
70e80666 IA	322	t->product_name = smbios_add_string(ctx, "Unknown Product");
07c9e683 SG	323	t->version = smbios_add_prop_si(ctx, "version",
07c9e683 SG	324	SYSINFO_ID_SMBIOS_BASEBOARD_VERSION);
0c95fff3	325	t->asset_tag_number = smbios_add_prop(ctx, "asset-tag");
721e992a BM	326	t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
	327	t->board_type = SMBIOS_BOARD_MOTHERBOARD;
	328
fd3b826d	329	len = t->length + smbios_string_table_len(ctx);
721e992a	330	*current += len;
a2505fc8	331	unmap_sysmem(t);
721e992a BM	332
	333	return len;
	334	}
	335
1e8989ad SG	336	static int smbios_write_type3(ulong *current, int handle,
1e8989ad SG	337	struct smbios_ctx *ctx)
721e992a	338	{
a2505fc8	339	struct smbios_type3 *t;
721e992a BM	340	int len = sizeof(struct smbios_type3);
721e992a BM	341
a2505fc8	342	t = map_sysmem(*current, len);
721e992a BM	343	memset(t, 0, sizeof(struct smbios_type3));
721e992a BM	344	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
0c95fff3 SG	345	smbios_set_eos(ctx, t->eos);
0c95fff3 SG	346	t->manufacturer = smbios_add_prop(ctx, "manufacturer");
70e80666 IA	347	if (!t->manufacturer)
70e80666 IA	348	t->manufacturer = smbios_add_string(ctx, "Unknown");
721e992a BM	349	t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
	350	t->bootup_state = SMBIOS_STATE_SAFE;
	351	t->power_supply_state = SMBIOS_STATE_SAFE;
	352	t->thermal_state = SMBIOS_STATE_SAFE;
	353	t->security_status = SMBIOS_SECURITY_NONE;
	354
fd3b826d	355	len = t->length + smbios_string_table_len(ctx);
721e992a	356	*current += len;
a2505fc8	357	unmap_sysmem(t);
721e992a BM	358
	359	return len;
	360	}
	361
1e8989ad SG	362	static void smbios_write_type4_dm(struct smbios_type4 *t,
1e8989ad SG	363	struct smbios_ctx *ctx)
96476206 AG	364	{
	365	u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
	366	const char *vendor = "Unknown";
	367	const char *name = "Unknown";
	368
	369	#ifdef CONFIG_CPU
	370	char processor_name[49];
	371	char vendor_name[49];
78227d4e	372	struct udevice *cpu = NULL;
96476206	373
78227d4e SG	374	uclass_find_first_device(UCLASS_CPU, &cpu);
78227d4e SG	375	if (cpu) {
8a8d24bd	376	struct cpu_plat *plat = dev_get_parent_plat(cpu);
96476206 AG	377
	378	if (plat->family)
	379	processor_family = plat->family;
	380	t->processor_id[0] = plat->id[0];
	381	t->processor_id[1] = plat->id[1];
	382
78227d4e	383	if (!cpu_get_vendor(cpu, vendor_name, sizeof(vendor_name)))
96476206	384	vendor = vendor_name;
78227d4e	385	if (!cpu_get_desc(cpu, processor_name, sizeof(processor_name)))
96476206 AG	386	name = processor_name;
	387	}
	388	#endif
	389
	390	t->processor_family = processor_family;
0c95fff3 SG	391	t->processor_manufacturer = smbios_add_string(ctx, vendor);
0c95fff3 SG	392	t->processor_version = smbios_add_string(ctx, name);
96476206 AG	393	}
96476206 AG	394
1e8989ad SG	395	static int smbios_write_type4(ulong *current, int handle,
1e8989ad SG	396	struct smbios_ctx *ctx)
721e992a	397	{
a2505fc8	398	struct smbios_type4 *t;
721e992a	399	int len = sizeof(struct smbios_type4);
721e992a	400
a2505fc8	401	t = map_sysmem(*current, len);
721e992a BM	402	memset(t, 0, sizeof(struct smbios_type4));
721e992a BM	403	fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
0c95fff3	404	smbios_set_eos(ctx, t->eos);
721e992a	405	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
1e8989ad	406	smbios_write_type4_dm(t, ctx);
721e992a BM	407	t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
	408	t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
	409	t->l1_cache_handle = 0xffff;
	410	t->l2_cache_handle = 0xffff;
	411	t->l3_cache_handle = 0xffff;
	412	t->processor_family2 = t->processor_family;
	413
fd3b826d	414	len = t->length + smbios_string_table_len(ctx);
721e992a	415	*current += len;
a2505fc8	416	unmap_sysmem(t);
721e992a BM	417
	418	return len;
	419	}
	420
1e8989ad SG	421	static int smbios_write_type32(ulong *current, int handle,
1e8989ad SG	422	struct smbios_ctx *ctx)
721e992a	423	{
a2505fc8	424	struct smbios_type32 *t;
721e992a BM	425	int len = sizeof(struct smbios_type32);
721e992a BM	426
a2505fc8	427	t = map_sysmem(*current, len);
721e992a BM	428	memset(t, 0, sizeof(struct smbios_type32));
721e992a BM	429	fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
0c95fff3	430	smbios_set_eos(ctx, t->eos);
721e992a BM	431
721e992a BM	432	*current += len;
a2505fc8	433	unmap_sysmem(t);
721e992a BM	434
	435	return len;
	436	}
	437
1e8989ad SG	438	static int smbios_write_type127(ulong *current, int handle,
1e8989ad SG	439	struct smbios_ctx *ctx)
721e992a	440	{
a2505fc8	441	struct smbios_type127 *t;
721e992a BM	442	int len = sizeof(struct smbios_type127);
721e992a BM	443
a2505fc8	444	t = map_sysmem(*current, len);
721e992a BM	445	memset(t, 0, sizeof(struct smbios_type127));
	446	fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
	447
	448	*current += len;
a2505fc8	449	unmap_sysmem(t);
721e992a BM	450
	451	return len;
	452	}
	453
44ffb6f0	454	static struct smbios_write_method smbios_write_funcs[] = {
e9adaa75	455	{ smbios_write_type0, "bios", },
44ffb6f0 SG	456	{ smbios_write_type1, "system", },
	457	{ smbios_write_type2, "baseboard", },
	458	{ smbios_write_type3, "chassis", },
	459	{ smbios_write_type4, },
	460	{ smbios_write_type32, },
	461	{ smbios_write_type127 },
721e992a BM	462	};
721e992a BM	463
42fd8c19	464	ulong write_smbios_table(ulong addr)
721e992a	465	{
44ffb6f0	466	ofnode parent_node = ofnode_null();
721e992a	467	struct smbios_entry *se;
1e8989ad	468	struct smbios_ctx ctx;
a2505fc8	469	ulong table_addr;
42fd8c19	470	ulong tables;
721e992a BM	471	int len = 0;
	472	int max_struct_size = 0;
	473	int handle = 0;
	474	char *istart;
	475	int isize;
	476	int i;
	477
1e8989ad	478	ctx.node = ofnode_null();
78227d4e	479	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
1e8989ad SG	480	uclass_first_device(UCLASS_SYSINFO, &ctx.dev);
	481	if (ctx.dev)
	482	parent_node = dev_read_subnode(ctx.dev, "smbios");
	483	} else {
	484	ctx.dev = NULL;
78227d4e SG	485	}
78227d4e SG	486
721e992a BM	487	/* 16 byte align the table address */
	488	addr = ALIGN(addr, 16);
	489
a2505fc8	490	se = map_sysmem(addr, sizeof(struct smbios_entry));
721e992a BM	491	memset(se, 0, sizeof(struct smbios_entry));
	492
	493	addr += sizeof(struct smbios_entry);
	494	addr = ALIGN(addr, 16);
	495	tables = addr;
	496
	497	/* populate minimum required tables */
	498	for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
44ffb6f0	499	const struct smbios_write_method *method;
44ffb6f0 SG	500	int tmp;
	501
	502	method = &smbios_write_funcs[i];
	503	if (IS_ENABLED(CONFIG_OF_CONTROL) && method->subnode_name)
1e8989ad SG	504	ctx.node = ofnode_find_subnode(parent_node,
	505	method->subnode_name);
	506	tmp = method->write((ulong *)&addr, handle++, &ctx);
60a4df32	507
721e992a BM	508	max_struct_size = max(max_struct_size, tmp);
	509	len += tmp;
	510	}
	511
	512	memcpy(se->anchor, "_SM_", 4);
	513	se->length = sizeof(struct smbios_entry);
	514	se->major_ver = SMBIOS_MAJOR_VER;
	515	se->minor_ver = SMBIOS_MINOR_VER;
	516	se->max_struct_size = max_struct_size;
	517	memcpy(se->intermediate_anchor, "_DMI_", 5);
	518	se->struct_table_length = len;
a2505fc8 SG	519
	520	/*
	521	* We must use a pointer here so things work correctly on sandbox. The
	522	* user of this table is not aware of the mapping of addresses to
	523	* sandbox's DRAM buffer.
	524	*/
	525	table_addr = (ulong)map_sysmem(tables, 0);
	526	if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX) {
	527	/*
	528	* We need to put this >32-bit pointer into the table but the
	529	* field is only 32 bits wide.
	530	*/
	531	printf("WARNING: SMBIOS table_address overflow %llx\n",
	532	(unsigned long long)table_addr);
c193d9bd HS	533	addr = 0;
c193d9bd HS	534	goto out;
a2505fc8 SG	535	}
	536	se->struct_table_address = table_addr;
	537
721e992a BM	538	se->struct_count = handle;
	539
	540	/* calculate checksums */
	541	istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
	542	isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
	543	se->intermediate_checksum = table_compute_checksum(istart, isize);
	544	se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
c193d9bd	545	out:
a2505fc8	546	unmap_sysmem(se);
721e992a BM	547
	548	return addr;
	549	}