pvh.h File Reference

#include <boot.h>
#include <stdint.h>

Include dependency graph for pvh.h:

Data Structures
struct	hvm_start_info_t
struct	hvm_memmap_table_entry
struct	hvm_modlist_entry
struct	pvh_mmap_t

Macros
#define	HVM_START_MAGIC_VALUE   0x336ec578
	Value of hvm_start_info.magic when the structure is valid.

Functions
void	pvh_init (hvm_start_info_t *info)
const char *	pvh_get_cmdline ()
pvh_mmap_t *	pvh_get_mmap ()
void	pvh_get_modules_range (uintptr_t *start, uintptr_t *end)
void	pvh_get_boot_info (boot_info_t *info)

Detailed Description

See also

https://github.com/xen-project/xen/blob/master/xen/include/public/arch-x86/hvm/start_info.h

This module manages the PVH boot information, which is passed by the bootloader in ebx when the kernel is loaded using the PVH ELF note (see asm/notes.asm).

Function Documentation

pvh_get_boot_info()

void pvh_get_boot_info

(

boot_info_t *

info

)

Fills the boot information from the PVH boot information.

Parameters

info	the boot information to fill

pvh_get_cmdline()

const char * pvh_get_cmdline

(

)

Returns the command line, if any.

Returns

a pointer to the command line or 0

pvh_get_mmap()

pvh_mmap_t * pvh_get_mmap

(

)

Returns the physical memory map reported by the bootloader.

Returns

a pointer to the physical memory map

pvh_get_modules_range()

void pvh_get_modules_range	(	uintptr_t *	start,
		uintptr_t *	end )

Returns the physical address range spanned by all boot modules (e.g. the init ramdisk), if any.

Parameters

start	set to the start address of the range, or 0 if there is no boot module
end	set to the end address (exclusive) of the range, or 0 if there is no boot module

pvh_init()

void pvh_init

(

hvm_start_info_t *

info

)

Reads the PVH boot information.

Parameters

info	the PVH boot information