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>
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2015 The ChromiumOS Authors. All rights reserved.
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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_LAYOUT_H__
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#define __VBOOT_VBNV_LAYOUT_H__
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#define VBOOT_VBNV_BLOCK_SIZE 16 /* Size of NV storage block in bytes */
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/* Constants for NV storage. We use this rather than structs and
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* bitfields so the data format is consistent across platforms and
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* compilers.
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*/
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#define HEADER_OFFSET 0
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#define HEADER_MASK 0xC0
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#define HEADER_SIGNATURE 0x40
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#define HEADER_FIRMWARE_SETTINGS_RESET 0x20
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#define HEADER_KERNEL_SETTINGS_RESET 0x10
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#define BOOT_OFFSET 1
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#define BOOT_DEBUG_RESET_MODE 0x80
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#define BOOT_DISABLE_DEV_REQUEST 0x40
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#define BOOT_OPROM_NEEDED 0x20
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#define BOOT_TRY_B_COUNT_MASK 0x0F
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#define RECOVERY_OFFSET 2
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#define LOCALIZATION_OFFSET 3
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#define DEV_FLAGS_OFFSET 4
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#define DEV_BOOT_USB_MASK 0x01
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#define DEV_BOOT_SIGNED_ONLY_MASK 0x02
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#define DEV_ENABLE_UDC 0x40
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#define MISC_FLAGS_OFFSET 8
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#define MISC_FLAGS_BATTERY_CUTOFF_MASK 0x08
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#define KERNEL_FIELD_OFFSET 11
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#define CRC_OFFSET 15
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#endif /* __VBOOT_VBNV_LAYOUT_H__ */
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