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#ifndef PXE_TYPES_H
#define PXE_TYPES_H
/** @addtogroup pxe Preboot eXecution Environment (PXE) API
* @{
*/
/** @file
*
* PXE data types
*
*/
#include "stdint.h"
#include "pxe_addr.h" /* Architecture-specific PXE definitions */
#include "errno.h" /* PXE status codes */
/** @defgroup pxe_types PXE data types
*
* These definitions are based on Table 1-1 ("Data Type Definitions")
* in the Intel PXE specification version 2.1. They have been
* generalised to non-x86 architectures where possible.
*
* @{
*/
/** An 8-bit unsigned integer */
typedef uint8_t UINT8;
/** A 16-bit unsigned integer */
typedef uint16_t UINT16;
/** A 32-bit unsigned integer */
typedef uint32_t UINT32;
/** A PXE exit code.
*
* Permitted values are PXENV_EXIT_SUCCESS and PXENV_EXIT_FAILURE.
*
*/
typedef uint16_t PXENV_EXIT;
/** A PXE status code.
*
* Status codes are defined in errno.h.
*
*/
typedef uint16_t PXENV_STATUS;
/** An IP address.
*
* This is an IPv4 address in host byte order.
*
*/
typedef uint32_t IP4;
/** A UDP port.
*
* Note that this is in network (big-endian) byte order.
*
*/
typedef uint16_t UDP_PORT;
/** Maximum length of a MAC address */
#define MAC_ADDR_LEN 16
/** A MAC address */
typedef uint8_t MAC_ADDR[MAC_ADDR_LEN];
/** A physical address.
*
* For x86, this is a 32-bit physical address, and is therefore
* limited to the low 4GB.
*
*/
typedef physaddr_t ADDR32;
#ifndef HAVE_ARCH_SEGSEL
/** A segment selector.
*
* For x86, this is a real mode segment (0x0000-0xffff), or a
* protected-mode segment selector, such as could be loaded into a
* segment register.
*
*/
typedef uint16_t SEGSEL;
#endif
#ifndef HAVE_ARCH_OFF16
/** An offset within a segment identified by #SEGSEL */
typedef uint16_t OFF16;
#endif
/** A segment:offset address */
typedef struct s_SEGOFF16 {
OFF16 offset; /**< Offset within the segment */
SEGSEL segment; /**< Segment selector */
} SEGOFF16 __attribute__ (( packed ));
/** A segment descriptor */
typedef struct s_SEGDESC {
SEGSEL segment_address; /**< Segment selector */
ADDR32 physical_address; /**< Base address of the segment */
OFF16 seg_size; /**< Size of the segment */
} SEGDESC __attribute__ (( packed ));
/** @} */ /* defgroup */
/** @} */ /* addtogroup */
#endif /* PXE_TYPES_H */
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