device/gba: add mostly complete hand-written register definitions
Signed-off-by: deadprogram <ron@hybridgroup.com>
Этот коммит содержится в:
deadprogram
Ayke
родитель
833c91fceb
коммит
4f7864b757
1 изменённых файлов: 474 добавлений и 0 удалений
474
src/device/gba/gba.go
Обычный файл
474
src/device/gba/gba.go
Обычный файл
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@ -0,0 +1,474 @@
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// Hand written file mostly derived from https://problemkaputt.de/gbatek.htm
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//go:build gameboyadvance
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package gba
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import (
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"runtime/volatile"
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"unsafe"
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)
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// Interrupt numbers.
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const (
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IRQ_VBLANK = 0
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IRQ_HBLANK = 1
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IRQ_VCOUNT = 2
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IRQ_TIMER0 = 3
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IRQ_TIMER1 = 4
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IRQ_TIMER2 = 5
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IRQ_TIMER3 = 6
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IRQ_COM = 7
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IRQ_DMA0 = 8
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IRQ_DMA1 = 9
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IRQ_DMA2 = 10
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IRQ_DMA3 = 11
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IRQ_KEYPAD = 12
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IRQ_GAMEPAK = 13
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)
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// Peripherals
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var (
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// Display registers
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DISP = (*DISP_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0000)))
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// Background control registers
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BGCNT0 = (*BGCNT_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0008)))
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BGCNT1 = (*BGCNT_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x000A)))
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BGCNT2 = (*BGCNT_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x000C)))
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BGCNT3 = (*BGCNT_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x000E)))
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BG0 = (*BG_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0010)))
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BG1 = (*BG_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0014)))
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BG2 = (*BG_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0018)))
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BG3 = (*BG_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x001C)))
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BGA2 = (*BG_AFFINE_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0020)))
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BGA3 = (*BG_AFFINE_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0030)))
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WIN = (*WIN_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0040)))
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GRAPHICS = (*GRAPHICS_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x004C)))
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// GBA Sound Channel 1 - Tone & Sweep
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SOUND1 = (*SOUND_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0060)))
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// GBA Sound Channel 2 - Tone
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SOUND2 = (*SOUND_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0068)))
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// TODO: Sound channel 3 and 4
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TM0 = (*TIMER_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0100)))
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TM1 = (*TIMER_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0104)))
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TM2 = (*TIMER_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0108)))
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TM3 = (*TIMER_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x010C)))
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KEY = (*KEY_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0130)))
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INTERRUPT = (*INTERRUPT_Type)(unsafe.Add(unsafe.Pointer(REG_BASE), uintptr(0x0200)))
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)
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// Main memory sections
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const (
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// External work RAM
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MEM_EWRAM uintptr = 0x02000000
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// Internal work RAM
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MEM_IWRAM uintptr = 0x03000000
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// I/O registers
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MEM_IO uintptr = 0x04000000
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// Palette. Note: no 8bit write !!
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MEM_PAL uintptr = 0x05000000
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// Video RAM. Note: no 8bit write !!
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MEM_VRAM uintptr = 0x06000000
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// Object Attribute Memory (OAM) Note: no 8bit write !!
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MEM_OAM uintptr = 0x07000000
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// ROM. No write at all (duh)
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MEM_ROM uintptr = 0x08000000
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// Static RAM. 8bit write only
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MEM_SRAM uintptr = 0x0E000000
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)
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// Main section sizes
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const (
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EWRAM_SIZE uintptr = 0x40000
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IWRAM_SIZE uintptr = 0x08000
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PAL_SIZE uintptr = 0x00400
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VRAM_SIZE uintptr = 0x18000
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OAM_SIZE uintptr = 0x00400
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SRAM_SIZE uintptr = 0x10000
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)
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// Sub section sizes
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const (
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// BG palette size
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PAL_BG_SIZE = 0x00200
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// Object palette size
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PAL_OBJ_SIZE = 0x00200
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// Charblock size
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CBB_SIZE = 0x04000
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// Screenblock size
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SBB_SIZE = 0x00800
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// BG VRAM size
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VRAM_BG_SIZE = 0x10000
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// Object VRAM size
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VRAM_OBJ_SIZE = 0x08000
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// Mode 3 buffer size
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M3_SIZE = 0x12C00
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// Mode 4 buffer size
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M4_SIZE = 0x09600
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// Mode 5 buffer size
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M5_SIZE = 0x0A000
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// Bitmap page size
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VRAM_PAGE_SIZE = 0x0A000
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)
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// Sub sections
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var (
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REG_BASE uintptr = MEM_IO
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// Background palette address
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MEM_PAL_BG = MEM_PAL
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// Object palette address
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MEM_PAL_OBJ = MEM_PAL + PAL_BG_SIZE
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// Front page address
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MEM_VRAM_FRONT = MEM_VRAM
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// Back page address
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MEM_VRAM_BACK = MEM_VRAM + VRAM_PAGE_SIZE
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// Object VRAM address
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MEM_VRAM_OBJ = MEM_VRAM + VRAM_BG_SIZE
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)
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// Display registers
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type DISP_Type struct {
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DISPCNT volatile.Register16
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_ [2]byte
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DISPSTAT volatile.Register16
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VCOUNT volatile.Register16
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}
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// Background control registers
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type BGCNT_Type struct {
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CNT volatile.Register16
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}
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// Regular background scroll registers. (write only!)
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type BG_Type struct {
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HOFS volatile.Register16
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VOFS volatile.Register16
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}
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// Affine background parameters. (write only!)
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type BG_AFFINE_Type struct {
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PA volatile.Register16
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PB volatile.Register16
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PC volatile.Register16
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PD volatile.Register16
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X volatile.Register32
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Y volatile.Register32
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}
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type WIN_Type struct {
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// win0 right, left (0xLLRR)
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WIN0H volatile.Register16
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// win1 right, left (0xLLRR)
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WIN1H volatile.Register16
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// win0 bottom, top (0xTTBB)
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WIN0V volatile.Register16
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// win1 bottom, top (0xTTBB)
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WIN1V volatile.Register16
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// win0, win1 control
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IN volatile.Register16
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// winOut, winObj control
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OUT volatile.Register16
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}
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type GRAPHICS_Type struct {
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// Mosaic control
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MOSAIC volatile.Register32
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// Alpha control
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BLDCNT volatile.Register16
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// Fade level
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BLDALPHA volatile.Register16
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// Blend levels
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BLDY volatile.Register16
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}
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type SOUND_Type struct {
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// Sweep register
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CNT_L volatile.Register16
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// Duty/Len/Envelope
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CNT_H volatile.Register16
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// Frequency/Control
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CNT_X volatile.Register16
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}
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// TODO: DMA
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// TIMER
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type TIMER_Type struct {
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DATA volatile.Register16
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CNT volatile.Register16
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}
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// TODO: serial
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// Keypad registers
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type KEY_Type struct {
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INPUT volatile.Register16
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CNT volatile.Register16
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}
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// TODO: Joybus communication
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// Interrupt / System registers
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type INTERRUPT_Type struct {
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IE volatile.Register16
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IF volatile.Register16
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WAITCNT volatile.Register16
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IME volatile.Register16
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PAUSE volatile.Register16
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}
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// Constants for DISP: display
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const (
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// BGMODE: background mode.
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// Position of BGMODE field.
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DISPCNT_BGMODE_Pos = 0x0
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// Bit mask of BGMODE field.
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DISPCNT_BGMODE_Msk = 0x4
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// BG Mode 0.
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DISPCNT_BGMODE_0 = 0x0
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// BG Mode 1.
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DISPCNT_BGMODE_1 = 0x1
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// BG Mode 2.
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DISPCNT_BGMODE_2 = 0x2
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// BG Mode 3.
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DISPCNT_BGMODE_3 = 0x3
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// BG Mode 4.
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DISPCNT_BGMODE_4 = 0x4
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// FRAMESELECT: frame select (mode 4 and 5 only).
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DISPCNT_FRAMESELECT_Pos = 0x4
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DISPCNT_FRAMESELECT_FRAME0 = 0x0
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DISPCNT_FRAMESELECT_FRAME1 = 0x1
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// HBLANKINTERVAL: 1=Allow access to OAM during H-Blank
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DISPCNT_HBLANKINTERVAL_Pos = 0x5
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DISPCNT_HBLANKINTERVAL_NOALLOW = 0x0
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DISPCNT_HBLANKINTERVAL_ALLOW = 0x1
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// OBJCHARVRAM: (0=Two dimensional, 1=One dimensional)
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DISPCNT_OBJCHARVRAM_Pos = 0x6
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DISPCNT_OBJCHARVRAM_2D = 0x0
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DISPCNT_OBJCHARVRAM_1D = 0x1
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// FORCEDBLANK: (1=Allow FAST access to VRAM,Palette,OAM)
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DISPCNT_FORCEDBLANK_Pos = 0x7
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DISPCNT_FORCEDBLANK_NOALLOW = 0x0
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DISPCNT_FORCEDBLANK_ALLOW = 0x1
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// Screen Display BG0
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DISPCNT_SCREENDISPLAY_BG0_Pos = 0x8
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DISPCNT_SCREENDISPLAY_BG0_ENABLE = 0x1
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DISPCNT_SCREENDISPLAY_BG0_DISABLE = 0x0
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// Screen Display BG1
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DISPCNT_SCREENDISPLAY_BG1_Pos = 0x9
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DISPCNT_SCREENDISPLAY_BG1_ENABLE = 0x1
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DISPCNT_SCREENDISPLAY_BG1_DISABLE = 0x0
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// Screen Display BG2
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DISPCNT_SCREENDISPLAY_BG2_Pos = 0xA
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DISPCNT_SCREENDISPLAY_BG2_ENABLE = 0x1
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DISPCNT_SCREENDISPLAY_BG2_DISABLE = 0x0
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// Screen Display BG3
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DISPCNT_SCREENDISPLAY_BG3_Pos = 0xB
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DISPCNT_SCREENDISPLAY_BG3_ENABLE = 0x1
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DISPCNT_SCREENDISPLAY_BG3_DISABLE = 0x0
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// Screen Display OBJ
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DISPCNT_SCREENDISPLAY_OBJ_Pos = 0xC
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DISPCNT_SCREENDISPLAY_OBJ_ENABLE = 0x1
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DISPCNT_SCREENDISPLAY_OBJ_DISABLE = 0x0
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// Window 0 Display Flag (0=Off, 1=On)
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DISPCNT_WINDOW0_DISPLAY_Pos = 0xD
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DISPCNT_WINDOW0_DISPLAY_ENABLE = 0x1
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DISPCNT_WINDOW0_DISPLAY_DISABLE = 0x0
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// Window 1 Display Flag (0=Off, 1=On)
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DISPCNT_WINDOW1_DISPLAY_Pos = 0xE
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DISPCNT_WINDOW1_DISPLAY_ENABLE = 0x1
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DISPCNT_WINDOW1_DISPLAY_DISABLE = 0x0
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// OBJ Window Display Flag
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DISPCNT_WINDOWOBJ_DISPLAY_Pos = 0xF
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DISPCNT_WINDOWOBJ_DISPLAY_ENABLE = 0x1
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DISPCNT_WINDOWOBJ_DISPLAY_DISABLE = 0x0
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// DISPSTAT: display status.
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// V-blank
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DISPSTAT_VBLANK_Pos = 0x0
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DISPSTAT_VBLANK_ENABLE = 0x1
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DISPSTAT_VBLANK_DISABLE = 0x0
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// H-blank
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DISPSTAT_HBLANK_Pos = 0x1
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DISPSTAT_HBLANK_ENABLE = 0x1
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DISPSTAT_HBLANK_DISABLE = 0x0
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// V-counter match
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DISPSTAT_VCOUNTER_Pos = 0x2
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DISPSTAT_VCOUNTER_MATCH = 0x1
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DISPSTAT_VCOUNTER_NOMATCH = 0x0
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// V-blank IRQ
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DISPSTAT_VBLANK_IRQ_Pos = 0x3
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DISPSTAT_VBLANK_IRQ_ENABLE = 0x1
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DISPSTAT_VBLANK_IRQ_DISABLE = 0x0
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// H-blank IRQ
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DISPSTAT_HBLANK_IRQ_Pos = 0x4
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DISPSTAT_HBLANK_IRQ_ENABLE = 0x1
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DISPSTAT_HBLANK_IRQ_DISABLE = 0x0
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// V-counter IRQ
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DISPSTAT_VCOUNTER_IRQ_Pos = 0x5
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DISPSTAT_VCOUNTER_IRQ_ENABLE = 0x1
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DISPSTAT_VCOUNTER_IRQ_DISABLE = 0x0
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// V-count setting
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DISPSTAT_VCOUNT_SETTING_Pos = 0x8
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)
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// Constants for TIMER
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const (
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// PRESCALER: Prescaler Selection (0=F/1, 1=F/64, 2=F/256, 3=F/1024)
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// Position of PRESCALER field.
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TIMERCNT_PRESCALER_Pos = 0x0
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// Bit mask of PRESCALER field.
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TIMERCNT_PRESCALER_Msk = 0x2
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// 0=F/1
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TIMERCNT_PRESCALER_1 = 0x0
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// 1=F/64
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TIMERCNT_PRESCALER_64 = 0x1
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// 2=F/256
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TIMERCNT_PRESCALER_256 = 0x2
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// F/1024
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TIMERCNT_PRESCALER_1024 = 0x3
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// COUNTUP: Count-up Timing (0=Normal, 1=See below) ;Not used in TM0CNT_H
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// Position of COUNTUP_TIMING field.
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TIMERCNT_COUNTUP_TIMING_Pos = 0x2
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TIMERCNT_COUNTUP_TIMING_NORMAL = 0x0
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TIMERCNT_COUNTUP_TIMING_ENABLED = 0x1
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TIMERCNT_TIMER_IRQ_ENABLED_Pos = 0x06
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TIMERCNT_TIMER_IRQ_ENABLED = 0x01
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TIMERCNT_TIMER_IRQ_DISABLED = 0x00
|
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TIMERCNT_TIMER_STARTSTOP_Pos = 0x07
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TIMERCNT_TIMER_START = 0x1
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TIMERCNT_TIMER_STOP = 0x0
|
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)
|
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// Constants for KEY
|
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const (
|
||||
// KEYINPUT
|
||||
KEYINPUT_PRESSED = 0x0
|
||||
KEYINPUT_RELEASED = 0x1
|
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KEYINPUT_BUTTON_A_Pos = 0x0
|
||||
KEYINPUT_BUTTON_B_Pos = 0x1
|
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KEYINPUT_BUTTON_SELECT_Pos = 0x2
|
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KEYINPUT_BUTTON_START_Pos = 0x3
|
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KEYINPUT_BUTTON_RIGHT_Pos = 0x4
|
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KEYINPUT_BUTTON_LEFT_Pos = 0x5
|
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KEYINPUT_BUTTON_UP_Pos = 0x6
|
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KEYINPUT_BUTTON_DOWN_Pos = 0x7
|
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KEYINPUT_BUTTON_R_Pos = 0x8
|
||||
KEYINPUT_BUTTON_L_Pos = 0x9
|
||||
|
||||
// KEYCNT
|
||||
KEYCNT_IGNORE = 0x0
|
||||
KEYCNT_SELECT = 0x1
|
||||
KEYCNT_BUTTON_A_Pos = 0x0
|
||||
KEYCNT_BUTTON_B_Pos = 0x1
|
||||
KEYCNT_BUTTON_SELECT_Pos = 0x2
|
||||
KEYCNT_BUTTON_START_Pos = 0x3
|
||||
KEYCNT_BUTTON_RIGHT_Pos = 0x4
|
||||
KEYCNT_BUTTON_LEFT_Pos = 0x5
|
||||
KEYCNT_BUTTON_UP_Pos = 0x6
|
||||
KEYCNT_BUTTON_DOWN_Pos = 0x7
|
||||
KEYCNT_BUTTON_R_Pos = 0x8
|
||||
KEYCNT_BUTTON_L_Pos = 0x9
|
||||
)
|
||||
|
||||
// Constants for INTERRUPT
|
||||
const (
|
||||
// IE
|
||||
INTERRUPT_IE_ENABLED = 0x1
|
||||
INTERRUPT_IE_DISABLED = 0x0
|
||||
INTERRUPT_IE_VBLANK_Pos = 0x0
|
||||
INTERRUPT_IE_HBLANK_Pos = 0x1
|
||||
INTERRUPT_IE_VCOUNTER_MATCH_Pos = 0x2
|
||||
INTERRUPT_IE_TIMER0_OVERFLOW_Pos = 0x3
|
||||
INTERRUPT_IE_TIMER1_OVERFLOW_Pos = 0x4
|
||||
INTERRUPT_IE_TIMER2_OVERFLOW_Pos = 0x5
|
||||
INTERRUPT_IE_TIMER3_OVERFLOW_Pos = 0x6
|
||||
INTERRUPT_IE_SERIAL_Pos = 0x7
|
||||
INTERRUPT_IE_DMA0_Pos = 0x8
|
||||
INTERRUPT_IE_DMA1_Pos = 0x9
|
||||
INTERRUPT_IE_DMA2_Pos = 0xA
|
||||
INTERRUPT_IE_DMA3_Pos = 0xB
|
||||
INTERRUPT_IE_KEYPAD_Pos = 0xC
|
||||
INTERRUPT_IE_GAMPAK_Pos = 0xD
|
||||
|
||||
// IF
|
||||
INTERRUPT_IF_ENABLED = 0x1
|
||||
INTERRUPT_IF_DISABLED = 0x0
|
||||
INTERRUPT_IF_VBLANK_Pos = 0x0
|
||||
INTERRUPT_IF_HBLANK_Pos = 0x1
|
||||
INTERRUPT_IF_VCOUNTER_MATCH_Pos = 0x2
|
||||
INTERRUPT_IF_TIMER0_OVERFLOW_Pos = 0x3
|
||||
INTERRUPT_IF_TIMER1_OVERFLOW_Pos = 0x4
|
||||
INTERRUPT_IF_TIMER2_OVERFLOW_Pos = 0x5
|
||||
INTERRUPT_IF_TIMER3_OVERFLOW_Pos = 0x6
|
||||
INTERRUPT_IF_SERIAL_Pos = 0x7
|
||||
INTERRUPT_IF_DMA0_Pos = 0x8
|
||||
INTERRUPT_IF_DMA1_Pos = 0x9
|
||||
INTERRUPT_IF_DMA2_Pos = 0xA
|
||||
INTERRUPT_IF_DMA3_Pos = 0xB
|
||||
INTERRUPT_IF_KEYPAD_Pos = 0xC
|
||||
INTERRUPT_IF_GAMPAK_Pos = 0xD
|
||||
)
|
||||
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Создание таблицы
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