diff options
Diffstat (limited to 'lib/smbios.c')
| -rw-r--r-- | lib/smbios.c | 163 |
1 files changed, 122 insertions, 41 deletions
diff --git a/lib/smbios.c b/lib/smbios.c index d7f4999e8b..3f0e1d5295 100644 --- a/lib/smbios.c +++ b/lib/smbios.c @@ -9,11 +9,14 @@ #include <dm.h> #include <env.h> #include <linux/stringify.h> +#include <linux/string.h> #include <mapmem.h> #include <smbios.h> #include <sysinfo.h> #include <tables_csum.h> #include <version.h> +#include <malloc.h> +#include <dm/ofnode.h> #ifdef CONFIG_CPU #include <cpu.h> #include <dm/uclass-internal.h> @@ -44,6 +47,25 @@ DECLARE_GLOBAL_DATA_PTR; /** + * struct map_sysinfo - Mapping of sysinfo strings to DT + * + * @sysinfo_str: sysinfo string + * @dt_str: DT string + * @max: Max index of the tokenized string to pick. Counting starts from 0 + * + */ +struct map_sysinfo { + const char *sysinfo_str; + const char *dt_str; + int max; +}; + +static const struct map_sysinfo sysinfo_to_dt[] = { + { .sysinfo_str = "product", .dt_str = "model", 2 }, + { .sysinfo_str = "manufacturer", .dt_str = "compatible", 1 }, +}; + +/** * struct smbios_ctx - context for writing SMBIOS tables * * @node: node containing the information to write (ofnode_null() if none) @@ -87,6 +109,18 @@ struct smbios_write_method { const char *subnode_name; }; +static const struct map_sysinfo *convert_sysinfo_to_dt(const char *sysinfo_str) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sysinfo_to_dt); i++) { + if (!strcmp(sysinfo_str, sysinfo_to_dt[i].sysinfo_str)) + return &sysinfo_to_dt[i]; + } + + return NULL; +} + /** * smbios_add_string() - add a string to the string area * @@ -102,9 +136,6 @@ 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; @@ -128,31 +159,88 @@ static int smbios_add_string(struct smbios_ctx *ctx, const char *str) } /** + * get_str_from_dt - Get a substring from a DT property. + * After finding the property in the DT, the function + * will parse comma-separated values and return the value. + * If nprop->max exceeds the number of comma-separated + * elements, the last non NULL value will be returned. + * Counting starts from zero. + * + * @nprop: sysinfo property to use + * @str: pointer to fill with data + * @size: str buffer length + */ +static +void get_str_from_dt(const struct map_sysinfo *nprop, char *str, size_t size) +{ + const char *dt_str; + int cnt = 0; + char *token; + + memset(str, 0, size); + if (!nprop || !nprop->max) + return; + + dt_str = ofnode_read_string(ofnode_root(), nprop->dt_str); + if (!dt_str) + return; + + memcpy(str, dt_str, size); + token = strtok(str, ","); + while (token && cnt < nprop->max) { + strlcpy(str, token, strlen(token) + 1); + token = strtok(NULL, ","); + cnt++; + } +} + +/** * 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 + * @dval: Default value to use if the string is not found or is empty * 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) + int sysinfo_id, const char *dval) { + int ret; + + if (!dval || !*dval) + dval = "Unknown"; + + if (!prop) + return smbios_add_string(ctx, dval); + 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; + const char *str = NULL; + char str_dt[128] = { 0 }; + /* + * If the node is not valid fallback and try the entire DT + * so we can at least fill in manufacturer and board type + */ + if (ofnode_valid(ctx->node)) { + str = ofnode_read_string(ctx->node, prop); + } else { + const struct map_sysinfo *nprop; + + nprop = convert_sysinfo_to_dt(prop); + get_str_from_dt(nprop, str_dt, sizeof(str_dt)); + str = (const char *)str_dt; + } - str = ofnode_read_string(ctx->node, prop); - if (str) - return smbios_add_string(ctx, str); + ret = smbios_add_string(ctx, str && *str ? str : dval); + return ret; } return 0; @@ -161,12 +249,15 @@ static int smbios_add_prop_si(struct smbios_ctx *ctx, const char *prop, /** * smbios_add_prop() - Add a property from the devicetree * - * @prop: property to write + * @prop: property to write. The default string will be written if + * prop is NULL + * @dval: Default value to use if the string is not found or is empty * Return: 0 if not found, else SMBIOS string number (1 or more) */ -static int smbios_add_prop(struct smbios_ctx *ctx, const char *prop) +static int smbios_add_prop(struct smbios_ctx *ctx, const char *prop, + const char *dval) { - return smbios_add_prop_si(ctx, prop, SYSINFO_ID_NONE); + return smbios_add_prop_si(ctx, prop, SYSINFO_ID_NONE, dval); } static void smbios_set_eos(struct smbios_ctx *ctx, char *eos) @@ -228,11 +319,9 @@ static int smbios_write_type0(ulong *current, int handle, 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->vendor = smbios_add_prop(ctx, NULL, "U-Boot"); - t->bios_ver = smbios_add_prop(ctx, "version"); - if (!t->bios_ver) - t->bios_ver = smbios_add_string(ctx, PLAIN_VERSION); + t->bios_ver = smbios_add_prop(ctx, "version", PLAIN_VERSION); if (t->bios_ver) gd->smbios_version = ctx->last_str; log_debug("smbios_version = %p: '%s'\n", gd->smbios_version, @@ -241,7 +330,7 @@ static int smbios_write_type0(ulong *current, int handle, 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); + t->bios_release_date = smbios_add_prop(ctx, NULL, U_BOOT_DMI_DATE); #ifdef CONFIG_ROM_SIZE t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1; #endif @@ -280,22 +369,19 @@ static int smbios_write_type1(ulong *current, int handle, 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->manufacturer = smbios_add_prop(ctx, "manufacturer", "Unknown"); + t->product_name = smbios_add_prop(ctx, "product", "Unknown"); t->version = smbios_add_prop_si(ctx, "version", - SYSINFO_ID_SMBIOS_SYSTEM_VERSION); + SYSINFO_ID_SMBIOS_SYSTEM_VERSION, + "Unknown"); if (serial_str) { - t->serial_number = smbios_add_string(ctx, serial_str); + t->serial_number = smbios_add_prop(ctx, NULL, serial_str); strncpy((char *)t->uuid, serial_str, sizeof(t->uuid)); } else { - t->serial_number = smbios_add_prop(ctx, "serial"); + t->serial_number = smbios_add_prop(ctx, "serial", "Unknown"); } - t->sku_number = smbios_add_prop(ctx, "sku"); - t->family = smbios_add_prop(ctx, "family"); + t->sku_number = smbios_add_prop(ctx, "sku", "Unknown"); + t->family = smbios_add_prop(ctx, "family", "Unknown"); len = t->length + smbios_string_table_len(ctx); *current += len; @@ -314,15 +400,12 @@ static int smbios_write_type2(ulong *current, int handle, 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->manufacturer = smbios_add_prop(ctx, "manufacturer", "Unknown"); + t->product_name = smbios_add_prop(ctx, "product", "Unknown"); t->version = smbios_add_prop_si(ctx, "version", - SYSINFO_ID_SMBIOS_BASEBOARD_VERSION); - t->asset_tag_number = smbios_add_prop(ctx, "asset-tag"); + SYSINFO_ID_SMBIOS_BASEBOARD_VERSION, + "Unknown"); + t->asset_tag_number = smbios_add_prop(ctx, "asset-tag", "Unknown"); t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING; t->board_type = SMBIOS_BOARD_MOTHERBOARD; @@ -343,9 +426,7 @@ static int smbios_write_type3(ulong *current, int handle, 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->manufacturer = smbios_add_prop(ctx, "manufacturer", "Unknown"); t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP; t->bootup_state = SMBIOS_STATE_SAFE; t->power_supply_state = SMBIOS_STATE_SAFE; @@ -388,8 +469,8 @@ static void smbios_write_type4_dm(struct smbios_type4 *t, #endif t->processor_family = processor_family; - t->processor_manufacturer = smbios_add_string(ctx, vendor); - t->processor_version = smbios_add_string(ctx, name); + t->processor_manufacturer = smbios_add_prop(ctx, NULL, vendor); + t->processor_version = smbios_add_prop(ctx, NULL, name); } static int smbios_write_type4(ulong *current, int handle, |