blob: d95ec9032b101752fc87834ab5aef7a5640525c5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* -------------------------------------------
Copyright (C) 2024, t& Corporation, all rights reserved.
------------------------------------------- */
/**
@brief The Explicit Partition Map scheme.
*/
#ifndef FIRMWAREKIT_EPM_H
#define FIRMWAREKIT_EPM_H
#include <NewKit/Defines.h>
#define kEPMNameLength (32)
#define kEPMFilesystemLength (16)
#define kEPMMagicLength (5)
/* @brief AMD64 magic for EPM */
#define kEPMMagic86 "EPMAM"
/* @brief RISC-V magic for EPM */
#define kEPMMagicRISCV "EPMRV"
/* @brief ARM magic for EPM */
#define kEPMMagicARM "EPMAR"
/* @brief 64x0 magic for EPM */
#define kEPMMagic64k "EPM64"
/* @brief 32x0 magic for EPM */
#define kEPMMagic32k "EPM32"
/* @brief POWER magic for EPM */
#define kEPMMagicPPC "EPMPC"
/* @brief Invalid magic for EPM */
#define kEPMMagicError "EPM??"
#ifdef __ZKA_AMD64__
#define kEPMMagic kEPMMagic86
#else
#ifdef __ZKA_ARM64__
#define kEPMMagic kEPMMagicARM
#else
#define kEPMMagic kEPMMagicError
#endif
#endif
///! @brief partition must start at this address.
///! Anything below is reserved for Data backup by the Main OS.
#define kEPMPartBlockLba (sizeof(EPM_PART_BLOCK))
///! @brief Current EPM revision.
#define kEPMRevisionBcd (0x0100)
/// !@brief EPM boot block address.
#define kEPMBootBlockLba (0U)
#define kEPMReserveLen (401)
struct EPM_GUID;
struct EPM_PART_BLOCK;
/* The first 0 > 128 addresses of a disk contains these headers. */
/// @brief EPM GUID structure.
typedef struct EPM_GUID
{
Kernel::UInt32 Data1;
Kernel::UInt16 Data2;
Kernel::UInt16 Data3;
Kernel::UInt8 Data4[8];
} EPM_GUID;
/**
* @brief The EPM boot block.
* @note NumBlock and LbaStart are ignored on some platforms.
*/
struct PACKED EPM_PART_BLOCK
{
Kernel::Char Magic[kEPMMagicLength];
Kernel::Char Name[kEPMNameLength];
EPM_GUID Guid;
Kernel::Int32 Version;
Kernel::Int64 NumBlocks;
Kernel::Int64 SectorSz;
Kernel::Int64 LbaStart; // base offset
Kernel::Int64 LbaEnd; // addition of lba_start to get the end of partition.
Kernel::Int16 Kind;
Kernel::Int32 FsVersion;
Kernel::Char Fs[kEPMFilesystemLength]; /* NeFS, ffs2... */
Kernel::Char Reserved[kEPMReserveLen]; // to fill a full sector.
};
///! @brief Version kind enum.
///! @brief Use in boot block version field.
enum
{
kEPMInvalid = 0x00,
kEPMGenericOS = 0xcf, // Generic OS
kEPMLinux = 0x8f, // Linux on EPM
kEPMBSD = 0x9f, // Berkeley Soft. Distribution
kEPMZkaOS = 0x1f, // This OS.
kEPMInvalidOS = 0xff,
};
typedef struct EPM_PART_BLOCK BOOT_BLOCK_STRUCT;
#endif // ifndef FIRMWAREKIT_EPM_H
|
