#include <stdint.h>

Include dependency graph for atag.h:

Data Structures
struct	atag_header_t

struct	atag_mem_t

struct	atag_cmdline_t

struct	atag_initrd2_t

Functions
void	atag_init (atag_header_t *ptr)

const char *	atag_get_cmdline ()

atag_initrd2_t *	atag_get_initrd2_at (uint8_t index)

Detailed Description

See also: http://www.simtec.co.uk/products/SWLINUX/files/booting_article.html

ARM tags are used to pass information from the bootloader to the kernel. It is kind of legacy now because Linux uses Device Trees, but it is easier to implement in a project like ArvernOS.

Function Documentation

◆ atag_get_cmdline()

const char * atag_get_cmdline ( )

Returns the command line found in the ATAGs.

Returns: a string containing the command line found in the ATAGS or NULL

◆ atag_get_initrd2_at()

atag_initrd2_t * atag_get_initrd2_at ( uint8_t index )

Returns the initrd2 entry at a specific index found in the ATAGs.

Parameters

index the index of the initrd2 entry to retrieve

Returns: the initrd2 entry or NULL if not found (or index is invalid)

◆ atag_init()

void atag_init ( atag_header_t * ptr )

Initializes the ATAGs module, which essentially parses the ATAGs and store information that can be queried later.