+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Adapted from coreboot src/include/smbios.h
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SMBIOS_H_
#define _SMBIOS_H_
+#include <dm/ofnode.h>
+
/* SMBIOS spec version implemented */
#define SMBIOS_MAJOR_VER 3
#define SMBIOS_MINOR_VER 0
+enum {
+ SMBIOS_STR_MAX = 64, /* Maximum length allowed for a string */
+};
+
/* SMBIOS structure types */
enum {
SMBIOS_BIOS_INFORMATION = 0,
#define BIOS_CHARACTERISTICS_SELECTABLE_BOOT (1 << 16)
#define BIOS_CHARACTERISTICS_EXT1_ACPI (1 << 0)
-#define BIOS_CHARACTERISTICS_EXT1_UEFI (1 << 3)
+#define BIOS_CHARACTERISTICS_EXT2_UEFI (1 << 3)
#define BIOS_CHARACTERISTICS_EXT2_TARGET (1 << 2)
struct __packed smbios_type0 {
u16 handle;
u8 reserved[6];
u8 boot_status;
- u8 eos[SMBIOS_STRUCT_EOS_BYTES];
+ char eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_type127 {
u8 type;
u8 length;
u16 handle;
- u8 eos[SMBIOS_STRUCT_EOS_BYTES];
+ char eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_header {
}
/**
- * Function prototype to write a specific type of SMBIOS structure
+ * write_smbios_table() - Write SMBIOS table
+ *
+ * This writes SMBIOS table at a given address.
+ *
+ * @addr: start address to write SMBIOS table. If this is not
+ * 16-byte-aligned then it will be aligned before the table is
+ * written.
+ * Return: end address of SMBIOS table (and start address for next entry)
+ * or NULL in case of an error
*
- * @addr: start address to write the structure
- * @handle: the structure's handle, a unique 16-bit number
- * @return: size of the structure
*/
-typedef int (*smbios_write_type)(ulong *addr, int handle);
+ulong write_smbios_table(ulong addr);
/**
- * write_smbios_table() - Write SMBIOS table
+ * smbios_entry() - Get a valid struct smbios_entry pointer
*
- * This writes SMBIOS table at a given address.
+ * @address: address where smbios tables is located
+ * @size: size of smbios table
+ * @return: NULL or a valid pointer to a struct smbios_entry
+ */
+const struct smbios_entry *smbios_entry(u64 address, u32 size);
+
+/**
+ * smbios_header() - Search for SMBIOS header type
*
- * @addr: start address to write SMBIOS table
- * @return: end address of SMBIOS table
+ * @entry: pointer to a struct smbios_entry
+ * @type: SMBIOS type
+ * @return: NULL or a valid pointer to a struct smbios_header
*/
-ulong write_smbios_table(ulong addr);
+const struct smbios_header *smbios_header(const struct smbios_entry *entry, int type);
+
+/**
+ * smbios_string() - Return string from SMBIOS
+ *
+ * @header: pointer to struct smbios_header
+ * @index: string index
+ * @return: NULL or a valid char pointer
+ */
+char *smbios_string(const struct smbios_header *header, int index);
+
+/**
+ * smbios_update_version() - Update the version string
+ *
+ * This can be called after the SMBIOS tables are written (e.g. after the U-Boot
+ * main loop has started) to update the BIOS version string (SMBIOS table 0).
+ *
+ * @version: New version string to use
+ * Return: 0 if OK, -ENOENT if no version string was previously written,
+ * -ENOSPC if the new string is too large to fit
+ */
+int smbios_update_version(const char *version);
+
+/**
+ * smbios_update_version_full() - Update the version string
+ *
+ * This can be called after the SMBIOS tables are written (e.g. after the U-Boot
+ * main loop has started) to update the BIOS version string (SMBIOS table 0).
+ * It scans for the correct place to put the version, so does not need U-Boot
+ * to have actually written the tables itself (e.g. if a previous bootloader
+ * did it).
+ *
+ * @smbios_tab: Start of SMBIOS tables
+ * @version: New version string to use
+ * Return: 0 if OK, -ENOENT if no version string was previously written,
+ * -ENOSPC if the new string is too large to fit
+ */
+int smbios_update_version_full(void *smbios_tab, const char *version);
+
+/**
+ * smbios_prepare_measurement() - Update smbios table for the measurement
+ *
+ * TCG specification requires to measure static configuration information.
+ * This function clear the device dependent parameters such as
+ * serial number for the measurement.
+ *
+ * @entry: pointer to a struct smbios_entry
+ * @header: pointer to a struct smbios_header
+ */
+void smbios_prepare_measurement(const struct smbios_entry *entry,
+ struct smbios_header *header);
#endif /* _SMBIOS_H_ */