pae.h File Reference

#include <stdint.h>
#include <stddef.h>

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Macros
#define	PAT_UC   0
#define	PAT_WC   1
#define	PAT_WT   4
#define	PAT_WP   5
#define	PAT_WB   6
#define	PAT_UC_MINUS   7
#define	PAT_ENCODE(type, idx)   (((uint64_t)PAT_ ## type) << 8*(idx))
#define	MAPPING_ERROR   ((void *)0xffffffffUL)
#define	MEMSET_PAE_VMEM_ALIGN   (2 * MiB)
#define	MEMSET_PAE_VMEM_SIZE   (2 * MiB)
#define	MEMSET_PAE_PGTL_ALIGN   (4 * KiB)
#define	MEMSET_PAE_PGTL_SIZE   (20 * KiB)

Functions
void	paging_enable_pae_cr3 (uintptr_t cr3)
void	paging_enable_pae (void)
void	paging_disable_pae (void)
void	paging_set_nxe (int enable)
void	paging_set_pat (uint64_t pat)
void	paging_set_default_pat (void)
int	paging_enable_for_car (const char *pdpt_name, const char *pt_name)
int	paging_identity_map_addr (uintptr_t base, size_t size, int pat)
void *	map_2M_page (unsigned long page)
int	memset_pae (uint64_t dest, unsigned char pat, uint64_t length, void *pgtbl, void *vmem_addr)

Macro Definition Documentation

MAPPING_ERROR

#define MAPPING_ERROR   ((void *)0xffffffffUL)

Definition at line 43 of file pae.h.

MEMSET_PAE_PGTL_ALIGN

#define MEMSET_PAE_PGTL_ALIGN   (4 * KiB)

Definition at line 49 of file pae.h.

MEMSET_PAE_PGTL_SIZE

#define MEMSET_PAE_PGTL_SIZE   (20 * KiB)

Definition at line 50 of file pae.h.

MEMSET_PAE_VMEM_ALIGN

#define MEMSET_PAE_VMEM_ALIGN   (2 * MiB)

Definition at line 47 of file pae.h.

MEMSET_PAE_VMEM_SIZE

#define MEMSET_PAE_VMEM_SIZE   (2 * MiB)

Definition at line 48 of file pae.h.

PAT_ENCODE

#define PAT_ENCODE	(		type,
			idx
	)		(((uint64_t)PAT_ ## type) << 8*(idx))

Definition at line 26 of file pae.h.

PAT_UC

#define PAT_UC   0

Definition at line 20 of file pae.h.

PAT_UC_MINUS

#define PAT_UC_MINUS   7

Definition at line 25 of file pae.h.

PAT_WB

#define PAT_WB   6

Definition at line 24 of file pae.h.

PAT_WC

#define PAT_WC   1

Definition at line 21 of file pae.h.

PAT_WP

#define PAT_WP   5

Definition at line 23 of file pae.h.

PAT_WT

#define PAT_WT   4

Definition at line 22 of file pae.h.

Function Documentation

map_2M_page()

void* map_2M_page

(

unsigned long

page

)

memset_pae()

int memset_pae	(	uint64_t	dest,
		unsigned char	pat,
		uint64_t	length,
		void *	pgtbl,
		void *	vmem_addr
	)

Definition at line 130 of file pgtbl.c.

References pde::addr_hi, pde::addr_lo, ALIGN_DOWN, BIOS_DEBUG, BIOS_ERR, BIOS_SPEW, IS_ALIGNED, length, memset(), MIN, offset, OVERLAP, paging_disable_pae(), paging_enable_pae_cr3(), pg_table::pd, PDE_IDX_SHIFT, PDE_PRES, PDE_PS, PDE_RW, pg_table::pdp, PDPTE_PRES, printk, s2MiB, and s4KiB.

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paging_disable_pae()

void paging_disable_pae

(

void

)

Definition at line 87 of file pgtbl.c.

References CR0_PG, CR4_PAE, CRx_TYPE, read_cr0(), read_cr4(), write_cr0(), and write_cr4().

Referenced by memset_pae().

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paging_enable_for_car()

int paging_enable_for_car	(	const char *	pdpt_name,
		const char *	pt_name
	)

Definition at line 324 of file pgtbl.c.

References BIOS_ERR, cbfs_load(), paging_enable_pae_cr3(), preram_symbols_available(), printk, and REGION_SIZE.

Referenced by bootblock_soc_early_init().

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paging_enable_pae()

void paging_enable_pae

(

void

)

Definition at line 71 of file pgtbl.c.

References CR0_PG, CR4_PAE, CRx_TYPE, read_cr0(), read_cr4(), write_cr0(), and write_cr4().

Referenced by paging_enable_pae_cr3().

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paging_enable_pae_cr3()

void paging_enable_pae_cr3

(

uintptr_t

cr3

)

Definition at line 64 of file pgtbl.c.

References paging_enable_pae(), and write_cr3().

Referenced by memset_pae(), and paging_enable_for_car().

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paging_identity_map_addr()

int paging_identity_map_addr	(	uintptr_t	base,
		size_t	size,
		int	pat
	)

Definition at line 494 of file pgtbl.c.

References _paging_identity_map_addr(), base, BIOS_ERR, IS_ALIGNED, paging_is_enabled(), printk, s2MiB, and s4KiB.

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paging_set_default_pat()

void paging_set_default_pat

(

void

)

Definition at line 315 of file pgtbl.c.

References paging_set_pat(), PAT_ENCODE, UC, WB, WC, WP, and WT.

Referenced by bootblock_soc_early_init().

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paging_set_nxe()

void paging_set_nxe

(

int

enable

)

Definition at line 279 of file pgtbl.c.

References EFER_NXE, IA32_EFER, msr_struct::lo, rdmsr(), and wrmsr().

Referenced by bootblock_soc_early_init().

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paging_set_pat()

void paging_set_pat

(

uint64_t

pat

)

Definition at line 291 of file pgtbl.c.

References msr_struct::hi, IA32_PAT, msr_struct::lo, and wrmsr().

Referenced by paging_set_default_pat().

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