/* * This file is part of the coreboot project. * * Copyright (C) 2016 Google Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __VBOOT_VBNV_H__ #define __VBOOT_VBNV_H__ #include <types.h> /* Generic functions */ void read_vbnv(uint8_t *vbnv_copy); void save_vbnv(const uint8_t *vbnv_copy); int verify_vbnv(uint8_t *vbnv_copy); void regen_vbnv_crc(uint8_t *vbnv_copy); int get_recovery_mode_from_vbnv(void); void set_recovery_mode_into_vbnv(int recovery_reason); int vboot_wants_oprom(void); /* Read the USB Device Controller(UDC) enable flag from VBNV. */ int vbnv_udc_enable_flag(void); /* Initialize and read vbnv. This is used in the main vboot logic path. */ void vbnv_init(uint8_t *vbnv_copy); /* Reset vbnv snapshot to a known state. */ void vbnv_reset(uint8_t *vbnv_copy); /* CMOS backend */ /* Initialize the vbnv cmos backing store. The vbnv_copy pointer is used for optional temporary storage in the init function. */ void vbnv_init_cmos(uint8_t *vbnv_copy); /* Return non-zero if cmos power was lost. */ int vbnv_cmos_failed(void); void read_vbnv_cmos(uint8_t *vbnv_copy); void save_vbnv_cmos(const uint8_t *vbnv_copy); /* Flash backend */ void read_vbnv_flash(uint8_t *vbnv_copy); void save_vbnv_flash(const uint8_t *vbnv_copy); /* EC backend */ void read_vbnv_ec(uint8_t *vbnv_copy); void save_vbnv_ec(const uint8_t *vbnv_copy); #endif /* __VBOOT_VBNV_H__ */