84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
|
/* Copyright 2019 The Chromium OS Authors. All rights reserved.
|
||
|
|
* Use of this source code is governed by a BSD-style license that can be
|
||
|
|
* found in the LICENSE file.
|
||
|
|
*
|
||
|
|
* General vboot-related constants.
|
||
|
|
*
|
||
|
|
* Constants that need to be exposed to assembly files or linker scripts
|
||
|
|
* may be placed here and imported via vb2_constants.h.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef VBOOT_REFERENCE_2CONSTANTS_H_
|
||
|
|
#define VBOOT_REFERENCE_2CONSTANTS_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Size of non-volatile data used by vboot.
|
||
|
|
*
|
||
|
|
* If you only support non-volatile data format V1, then use VB2_NVDATA_SIZE.
|
||
|
|
* If you support V2, use VB2_NVDATA_SIZE_V2 and set context flag
|
||
|
|
* VB2_CONTEXT_NVDATA_V2.
|
||
|
|
*/
|
||
|
|
#define VB2_NVDATA_SIZE 16
|
||
|
|
#define VB2_NVDATA_SIZE_V2 64
|
||
|
|
|
||
|
|
/* Size of secure data spaces used by vboot */
|
||
|
|
#define VB2_SECDATA_FIRMWARE_SIZE 10
|
||
|
|
#define VB2_SECDATA_KERNEL_SIZE 13
|
||
|
|
#define VB2_SECDATA_FWMP_MIN_SIZE 40
|
||
|
|
#define VB2_SECDATA_FWMP_MAX_SIZE 64
|
||
|
|
|
||
|
|
/* TODO(chromium:972956): Remove once coreboot is using updated names */
|
||
|
|
#define VB2_SECDATA_SIZE 10
|
||
|
|
#define VB2_SECDATAK_SIZE 13
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Recommended size of work buffer for firmware verification stage.
|
||
|
|
*
|
||
|
|
* TODO: The recommended size really depends on which key algorithms are
|
||
|
|
* used. Should have a better / more accurate recommendation than this.
|
||
|
|
*/
|
||
|
|
#define VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE (12 * 1024)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Recommended size of work buffer for kernel verification stage.
|
||
|
|
*
|
||
|
|
* This is bigger because vboot 2.0 kernel preambles are usually padded to
|
||
|
|
* 64 KB.
|
||
|
|
*
|
||
|
|
* TODO: The recommended size really depends on which key algorithms are
|
||
|
|
* used. Should have a better / more accurate recommendation than this.
|
||
|
|
*/
|
||
|
|
#define VB2_KERNEL_WORKBUF_RECOMMENDED_SIZE (80 * 1024)
|
||
|
|
|
||
|
|
/* Recommended buffer size for vb2api_get_pcr_digest. */
|
||
|
|
#define VB2_PCR_DIGEST_RECOMMENDED_SIZE 32
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Alignment for work buffer pointers/allocations should be useful for any
|
||
|
|
* data type. When declaring workbuf buffers on the stack, the caller should
|
||
|
|
* use explicit alignment to avoid run-time errors. For example:
|
||
|
|
*
|
||
|
|
* int foo(void)
|
||
|
|
* {
|
||
|
|
* struct vb2_workbuf wb;
|
||
|
|
* uint8_t buf[NUM] __attribute__ ((aligned (VB2_WORKBUF_ALIGN)));
|
||
|
|
* wb.buf = buf;
|
||
|
|
* wb.size = sizeof(buf);
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* We might get away with using __alignof__(void *), but since GCC defines a
|
||
|
|
* macro for us we'll be safe and use that. */
|
||
|
|
#define VB2_WORKBUF_ALIGN __BIGGEST_ALIGNMENT__
|
||
|
|
|
||
|
|
/* Maximum length of a HWID in bytes, counting terminating null. */
|
||
|
|
#define VB2_GBB_HWID_MAX_SIZE 256
|
||
|
|
|
||
|
|
/* Type and offset of flags member in vb2_gbb_header struct. */
|
||
|
|
#define VB2_GBB_FLAGS_OFFSET 12
|
||
|
|
#ifndef __ASSEMBLER__
|
||
|
|
#include <stdint.h>
|
||
|
|
typedef uint32_t vb2_gbb_flags_t;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* VBOOT_REFERENCE_2CONSTANTS_H_ */
|