raspberry3_bare/mbox.h

#pragma once

#include <stdint.h>
#include "mmio.h"

#define MBOX_READ       ((volatile unsigned int*)(VCORE_MBOX+0x0))
#define MBOX_POLL       ((volatile unsigned int*)(VCORE_MBOX+0x10))
#define MBOX_SENDER     ((volatile unsigned int*)(VCORE_MBOX+0x14))
#define MBOX_STATUS     ((volatile unsigned int*)(VCORE_MBOX+0x18))
#define MBOX_CONFIG     ((volatile unsigned int*)(VCORE_MBOX+0x1C))
#define MBOX_WRITE      ((volatile unsigned int*)(VCORE_MBOX+0x20))
#define MBOX_RESPONSE   0x80000000
#define MBOX_FULL       0x80000000
#define MBOX_EMPTY      0x40000000

#define MBOX_REQUEST    0

/* channels */
#define MBOX_CH_POWER   0
#define MBOX_CH_FB      1
#define MBOX_CH_VUART   2
#define MBOX_CH_VCHIQ   3
#define MBOX_CH_LEDS    4
#define MBOX_CH_BTNS    5
#define MBOX_CH_TOUCH   6
#define MBOX_CH_COUNT   7
#define MBOX_CH_PROP    8 // Used for ARM to GPU

/* tags */
#define MBOX_TAG_GETSERIAL 0x00010004
#define MBOX_TAG_GETARMMEM 0x00010005
#define MBOX_TAG_GETVCOREMEM 0x00010006
#define MBOX_TAG_GETCORETEMP 0x00030006
#define MBOX_TAG_GETMAXCLK 0x00030004
#define MBOX_TAG_GETCLK 0x00030047
#define MBOX_TAG_SETCLK 0x00038002
#define MBOX_TAG_LAST 0

extern volatile unsigned int mbox[36];
//box should be 16 aligned.
//mbox could be used for this.
int mbox_call(uint8_t ch, volatile uint32_t *box);