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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include "common/common_types.h"
namespace Memory {
/**
* Page size used by the ARM architecture. This is the smallest granularity with which memory can
* be mapped.
*/
const u32 PAGE_SIZE = 0x1000;
const u32 PAGE_MASK = PAGE_SIZE - 1;
const int PAGE_BITS = 12;
/// Physical memory regions as seen from the ARM11
enum : PAddr {
/// IO register area
IO_AREA_PADDR = 0x10100000,
IO_AREA_SIZE = 0x01000000, ///< IO area size (16MB)
IO_AREA_PADDR_END = IO_AREA_PADDR + IO_AREA_SIZE,
/// MPCore internal memory region
MPCORE_RAM_PADDR = 0x17E00000,
MPCORE_RAM_SIZE = 0x00002000, ///< MPCore internal memory size (8KB)
MPCORE_RAM_PADDR_END = MPCORE_RAM_PADDR + MPCORE_RAM_SIZE,
/// Video memory
VRAM_PADDR = 0x18000000,
VRAM_SIZE = 0x00600000, ///< VRAM size (6MB)
VRAM_PADDR_END = VRAM_PADDR + VRAM_SIZE,
/// DSP memory
DSP_RAM_PADDR = 0x1FF00000,
DSP_RAM_SIZE = 0x00080000, ///< DSP memory size (512KB)
DSP_RAM_PADDR_END = DSP_RAM_PADDR + DSP_RAM_SIZE,
/// AXI WRAM
AXI_WRAM_PADDR = 0x1FF80000,
AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size (512KB)
AXI_WRAM_PADDR_END = AXI_WRAM_PADDR + AXI_WRAM_SIZE,
/// Main FCRAM
FCRAM_PADDR = 0x20000000,
FCRAM_SIZE = 0x08000000, ///< FCRAM size (128MB)
FCRAM_PADDR_END = FCRAM_PADDR + FCRAM_SIZE,
};
/// Virtual user-space memory regions
enum : VAddr {
/// Where the application text, data and bss reside.
PROCESS_IMAGE_VADDR = 0x00100000,
PROCESS_IMAGE_MAX_SIZE = 0x03F00000,
PROCESS_IMAGE_VADDR_END = PROCESS_IMAGE_VADDR + PROCESS_IMAGE_MAX_SIZE,
/// Area where IPC buffers are mapped onto.
IPC_MAPPING_VADDR = 0x04000000,
IPC_MAPPING_SIZE = 0x04000000,
IPC_MAPPING_VADDR_END = IPC_MAPPING_VADDR + IPC_MAPPING_SIZE,
/// Application heap (includes stack).
HEAP_VADDR = 0x08000000,
HEAP_SIZE = 0x08000000,
HEAP_VADDR_END = HEAP_VADDR + HEAP_SIZE,
/// Area where shared memory buffers are mapped onto.
SHARED_MEMORY_VADDR = 0x10000000,
SHARED_MEMORY_SIZE = 0x04000000,
SHARED_MEMORY_VADDR_END = SHARED_MEMORY_VADDR + SHARED_MEMORY_SIZE,
/// Maps 1:1 to an offset in FCRAM. Used for HW allocations that need to be linear in physical memory.
LINEAR_HEAP_VADDR = 0x14000000,
LINEAR_HEAP_SIZE = 0x08000000,
LINEAR_HEAP_VADDR_END = LINEAR_HEAP_VADDR + LINEAR_HEAP_SIZE,
/// Maps 1:1 to the IO register area.
IO_AREA_VADDR = 0x1EC00000,
IO_AREA_VADDR_END = IO_AREA_VADDR + IO_AREA_SIZE,
/// Maps 1:1 to VRAM.
VRAM_VADDR = 0x1F000000,
VRAM_VADDR_END = VRAM_VADDR + VRAM_SIZE,
/// Maps 1:1 to DSP memory.
DSP_RAM_VADDR = 0x1FF00000,
DSP_RAM_VADDR_END = DSP_RAM_VADDR + DSP_RAM_SIZE,
/// Read-only page containing kernel and system configuration values.
CONFIG_MEMORY_VADDR = 0x1FF80000,
CONFIG_MEMORY_SIZE = 0x00001000,
CONFIG_MEMORY_VADDR_END = CONFIG_MEMORY_VADDR + CONFIG_MEMORY_SIZE,
/// Usually read-only page containing mostly values read from hardware.
SHARED_PAGE_VADDR = 0x1FF81000,
SHARED_PAGE_SIZE = 0x00001000,
SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE,
// TODO(yuriks): The size of this area is dynamic, the kernel grows
// it as more and more threads are created. For now we'll just use a
// hardcoded value.
/// Area where TLS (Thread-Local Storage) buffers are allocated.
TLS_AREA_VADDR = 0x1FF82000,
TLS_ENTRY_SIZE = 0x200,
TLS_AREA_SIZE = 300 * TLS_ENTRY_SIZE + 0x800, // Space for up to 300 threads + round to page size
TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE,
/// Equivalent to LINEAR_HEAP_VADDR, but expanded to cover the extra memory in the New 3DS.
NEW_LINEAR_HEAP_VADDR = 0x30000000,
NEW_LINEAR_HEAP_SIZE = 0x10000000,
NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
};
u8 Read8(VAddr addr);
u16 Read16(VAddr addr);
u32 Read32(VAddr addr);
u64 Read64(VAddr addr);
void Write8(VAddr addr, u8 data);
void Write16(VAddr addr, u16 data);
void Write32(VAddr addr, u32 data);
void Write64(VAddr addr, u64 data);
void WriteBlock(VAddr addr, const u8* data, size_t size);
u8* GetPointer(VAddr virtual_address);
/**
* Converts a virtual address inside a region with 1:1 mapping to physical memory to a physical
* address. This should be used by services to translate addresses for use by the hardware.
*/
PAddr VirtualToPhysicalAddress(VAddr addr);
/**
* Undoes a mapping performed by VirtualToPhysicalAddress().
*/
VAddr PhysicalToVirtualAddress(PAddr addr);
/**
* Gets a pointer to the memory region beginning at the specified physical address.
*
* @note This is currently implemented using PhysicalToVirtualAddress().
*/
u8* GetPhysicalPointer(PAddr address);
}
|
