vbnv_flash.c File Reference

#include <commonlib/region.h>
#include <console/console.h>
#include <fmap.h>
#include <string.h>
#include <vb2_api.h>
#include <security/vboot/vboot_common.h>
#include <security/vboot/vbnv.h>
#include <security/vboot/vbnv_layout.h>

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Data Structures
struct	vbnv_flash_ctx

Macros
#define	BLOB_SIZE   VB2_NVDATA_SIZE

Functions
static uint8_t	erase_value (void)
static int	can_overwrite (uint8_t current, uint8_t new)
static int	init_vbnv (void)
static int	erase_nvram (void)
void	read_vbnv_flash (uint8_t *vbnv_copy)
void	save_vbnv_flash (const uint8_t *vbnv_copy)

Variables
static struct vbnv_flash_ctx	vbnv_flash

Macro Definition Documentation

BLOB_SIZE

#define BLOB_SIZE   VB2_NVDATA_SIZE

Definition at line 12 of file vbnv_flash.c.

Function Documentation

can_overwrite()

static int can_overwrite ( uint8_t  current, uint8_t  new  )

inlinestatic

Definition at line 42 of file vbnv_flash.c.

Referenced by save_vbnv_flash().

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erase_nvram()

static int erase_nvram ( void  )

static

Definition at line 103 of file vbnv_flash.c.

References BIOS_ERR, BIOS_INFO, printk, rdev, rdev_eraseat(), region_device_sz(), vbnv_flash_ctx::vbnv_dev, and vbnv_flash.

Referenced by save_vbnv_flash().

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erase_value()

static uint8_t erase_value ( void  )

inlinestatic

Definition at line 37 of file vbnv_flash.c.

Referenced by init_vbnv().

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init_vbnv()

static int init_vbnv ( void  )

static

Definition at line 47 of file vbnv_flash.c.

References BIOS_ERR, vbnv_flash_ctx::blob_offset, BLOB_SIZE, buf, vbnv_flash_ctx::cache, erase_value(), fmap_locate_area_as_rdev_rw(), vbnv_flash_ctx::initialized, memcmp(), offset, printk, rdev, rdev_readat(), region_device_sz(), vbnv_flash_ctx::top_offset, vbnv_flash_ctx::vbnv_dev, and vbnv_flash.

Referenced by read_vbnv_flash(), and save_vbnv_flash().

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read_vbnv_flash()

void read_vbnv_flash

(

uint8_t *

vbnv_copy

)

Definition at line 117 of file vbnv_flash.c.

References BLOB_SIZE, vbnv_flash_ctx::cache, init_vbnv(), vbnv_flash_ctx::initialized, memcpy(), and vbnv_flash.

Referenced by read_vbnv(), and restore_from_backup().

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save_vbnv_flash()

void save_vbnv_flash

(

const uint8_t *

vbnv_copy

)

Definition at line 128 of file vbnv_flash.c.

References BIOS_ERR, vbnv_flash_ctx::blob_offset, BLOB_SIZE, vbnv_flash_ctx::cache, can_overwrite(), erase_nvram(), init_vbnv(), vbnv_flash_ctx::initialized, memcmp(), memcpy(), printk, rdev, rdev_writeat(), vbnv_flash_ctx::top_offset, vbnv_flash_ctx::vbnv_dev, and vbnv_flash.

Referenced by save_vbnv().

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Variable Documentation

vbnv_flash

struct vbnv_flash_ctx vbnv_flash

static

Definition at line 1 of file vbnv_flash.c.

Referenced by erase_nvram(), init_vbnv(), read_vbnv_flash(), and save_vbnv_flash().