kernel: Add SMBIOS/DMI support

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 71 insertions, 0 deletions

diff --git a/sys/include/dev/acpi/tables.h b/sys/include/dev/acpi/tables.h
index d190150..5340c7f 100644
--- a/sys/include/dev/acpi/tables.h
+++ b/sys/include/dev/acpi/tables.h
@@ -162,4 +162,35 @@ struct __packed acpi_mcfg {
     struct acpi_mcfg_base base[1];
 };
 
+struct __packed dmi_entry32 {
+    char signature[4];      /* _SM_ */
+    uint8_t checksum;       /* Sum of table bytes */
+    uint8_t length;         /* Length of entry table */
+    uint8_t major;          /* DMI major */
+    uint8_t minor;          /* DMI minor */
+    uint16_t max_size;      /* Max structure size */
+    uint8_t rev;            /* Entry revision */
+    char fmt_area[5];       /* Formatted area */
+    char isignature[5];     /* Intermediate signature */
+    uint8_t ichecksum;      /* Intermediate checksum */
+    uint16_t table_len;     /* Length of SMBIOS structure table */
+    uint32_t addr;          /* 32-bit physical start of SMBIOS structure table */
+    uint16_t nstruct;       /* Total number of structures */
+    uint8_t bcd_rev;
+};
+
+struct __packed dmi_entry64 {
+    char signature[5];      /* _SM_ */
+    uint8_t checksum;       /* Sum of table bytes */
+    uint8_t length;         /* Length of entry table */
+    uint8_t major;          /* DMI major */
+    uint8_t minor;          /* DMI minor */
+    uint8_t docrev;
+    uint8_t entry_rev;
+    uint8_t reserved;
+    uint16_t max_size;      /* Max structure size */
+    uint16_t padding;
+    uint64_t addr;          /* 64-bit physical address */
+};
+
 #endif  /* _ACPI_TABLES_H_ */
diff --git a/sys/include/dev/dmi/dmi.h b/sys/include/dev/dmi/dmi.h
new file mode 100644
index 0000000..d24397a
--- /dev/null
+++ b/sys/include/dev/dmi/dmi.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DMI_DMI_H_
+#define _DMI_DMI_H_
+
+#include <sys/types.h>
+
+const char *dmi_vendor(void);
+const char *dmi_prodver(void);
+const char *dmi_product(void);
+const char *dmi_cpu_manufact(void);
+
+#endif  /* !_DMI_DMI_H_ */