iPXE
Functions
bios_smbios.c File Reference

System Management BIOS. More...

#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <ipxe/uaccess.h>
#include <ipxe/smbios.h>
#include <realmode.h>
#include <pnpbios.h>

Go to the source code of this file.

Functions

 FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
 
static int bios_find_smbios (struct smbios *smbios)
 Find SMBIOS. More...
 
 PROVIDE_SMBIOS (pcbios, find_smbios, bios_find_smbios)
 

Detailed Description

System Management BIOS.

Definition in file bios_smbios.c.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL  )

◆ bios_find_smbios()

static int bios_find_smbios ( struct smbios smbios)
static

Find SMBIOS.

Parameters
smbiosSMBIOS entry point descriptor structure to fill in
Return values
rcReturn status code

Definition at line 47 of file bios_smbios.c.

47  {
48  struct smbios_entry entry;
49  int rc;
50 
51  /* Scan through BIOS segment to find SMBIOS entry point */
52  if ( ( rc = find_smbios_entry ( real_to_user ( BIOS_SEG, 0 ), 0x10000,
53  &entry ) ) != 0 )
54  return rc;
55 
56  /* Fill in entry point descriptor structure */
57  smbios->address = phys_to_user ( entry.smbios_address );
58  smbios->len = entry.smbios_len;
59  smbios->count = entry.smbios_count;
60  smbios->version = SMBIOS_VERSION ( entry.major, entry.minor );
61 
62  return 0;
63 }
struct arbelprm_rc_send_wqe rc
Definition: arbel.h:14
unsigned int count
Number of SMBIOS structures.
Definition: smbios.h:170
size_t len
Length of SMBIOS structures.
Definition: smbios.h:168
userptr_t phys_to_user(unsigned long phys_addr)
Convert physical address to user pointer.
SMBIOS entry point descriptor.
Definition: smbios.h:164
uint16_t version
SMBIOS version.
Definition: smbios.h:172
int find_smbios_entry(userptr_t start, size_t len, struct smbios_entry *entry)
Scan for SMBIOS entry point structure.
Definition: smbios.c:52
SMBIOS entry point.
Definition: smbios.h:44
#define SMBIOS_VERSION(major, minor)
Calculate SMBIOS version.
Definition: smbios.h:182
union aes_table_entry entry[256]
Table entries, indexed by S(N)
Definition: aes.c:26
userptr_t address
Start of SMBIOS structures.
Definition: smbios.h:166
static __always_inline userptr_t real_to_user(unsigned int segment, unsigned int offset)
Convert segment:offset address to user buffer.
Definition: realmode.h:75
#define BIOS_SEG
Definition: pnpbios.h:13

References smbios::address, BIOS_SEG, smbios::count, entry, find_smbios_entry(), smbios::len, phys_to_user(), rc, real_to_user(), SMBIOS_VERSION, and smbios::version.

◆ PROVIDE_SMBIOS()

PROVIDE_SMBIOS ( pcbios  ,
find_smbios  ,
bios_find_smbios   
)