37c721d786
This change adds a helper function to read USB Device Controller (UDC) enable flag from VBNV. BUG=b:78577893 BRANCH=poppy Change-Id: Ifd1e9b0781ffee242d695b72287632bc944a50c7 Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/25846 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2016 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __VBOOT_VBNV_H__
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#define __VBOOT_VBNV_H__
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#include <types.h>
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/* Generic functions */
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void read_vbnv(uint8_t *vbnv_copy);
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void save_vbnv(const uint8_t *vbnv_copy);
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int verify_vbnv(uint8_t *vbnv_copy);
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void regen_vbnv_crc(uint8_t *vbnv_copy);
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int get_recovery_mode_from_vbnv(void);
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void set_recovery_mode_into_vbnv(int recovery_reason);
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int vboot_wants_oprom(void);
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/* Read the USB Device Controller(UDC) enable flag from VBNV. */
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int vbnv_udc_enable_flag(void);
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/* Initialize and read vbnv. This is used in the main vboot logic path. */
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void vbnv_init(uint8_t *vbnv_copy);
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/* Reset vbnv snapshot to a known state. */
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void vbnv_reset(uint8_t *vbnv_copy);
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/* CMOS backend */
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/* Initialize the vbnv cmos backing store. The vbnv_copy pointer is used for
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optional temporary storage in the init function. */
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void vbnv_init_cmos(uint8_t *vbnv_copy);
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/* Return non-zero if cmos power was lost. */
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int vbnv_cmos_failed(void);
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void read_vbnv_cmos(uint8_t *vbnv_copy);
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void save_vbnv_cmos(const uint8_t *vbnv_copy);
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/* Flash backend */
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void read_vbnv_flash(uint8_t *vbnv_copy);
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void save_vbnv_flash(const uint8_t *vbnv_copy);
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/* EC backend */
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void read_vbnv_ec(uint8_t *vbnv_copy);
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void save_vbnv_ec(const uint8_t *vbnv_copy);
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#endif /* __VBOOT_VBNV_H__ */
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