Luma3DS-3GX/source/screeninit.c

/*
*   screeninit.c
*       by Aurora Wright
*   Screen init code by dark_samus, bil1s, Normmatt, delebile and others.
*   Screen deinit code by tiniVi.
*
*   Copyright (c) 2016 All Rights Reserved
*/

#include "screeninit.h"
#include "draw.h"
#include "i2c.h"

static vu32 *const arm11 = (u32 *)0x1FFFFFF8;

void deinitScreens(void){
    void __attribute__((naked)) ARM11(void){
        //Disable interrupts
        __asm(".word 0xF10C01C0");

        //Clear ARM11 entry offset
        *arm11 = 0;

        //Shutdown LCDs
        *(vu32 *)0x10202A44 = 0;
        *(vu32 *)0x10202244 = 0;
        *(vu32 *)0x10202014 = 0;
    
        //Wait for the entry to be set
        while(!*arm11);
        //Jump to it
        ((void (*)())*arm11)();
    }

    if(PDN_GPU_CNT != 0x1){
        *arm11 = (u32)ARM11;
        while(*arm11);
    }
}

void initScreens(void){
    void __attribute__((naked)) ARM11(void){
        //Disable interrupts
        __asm(".word 0xF10C01C0");

        *(vu32 *)0x10141200 = 0x1007F;
        *(vu32 *)0x10202014 = 0x00000001;
        *(vu32 *)0x1020200C &= 0xFFFEFFFE;
        *(vu32 *)0x10202240 = 0x45;
        *(vu32 *)0x10202A40 = 0x45;
        *(vu32 *)0x10202244 = 0x1023E;
        *(vu32 *)0x10202A44 = 0x1023E;

        // Top screen
        *(vu32 *)0x10400400 = 0x000001c2;
        *(vu32 *)0x10400404 = 0x000000d1;
        *(vu32 *)0x10400408 = 0x000001c1;
        *(vu32 *)0x1040040c = 0x000001c1;
        *(vu32 *)0x10400410 = 0x00000000;
        *(vu32 *)0x10400414 = 0x000000cf;
        *(vu32 *)0x10400418 = 0x000000d1;
        *(vu32 *)0x1040041c = 0x01c501c1;
        *(vu32 *)0x10400420 = 0x00010000;
        *(vu32 *)0x10400424 = 0x0000019d;
        *(vu32 *)0x10400428 = 0x00000002;
        *(vu32 *)0x1040042c = 0x00000192;
        *(vu32 *)0x10400430 = 0x00000192;
        *(vu32 *)0x10400434 = 0x00000192;
        *(vu32 *)0x10400438 = 0x00000001;
        *(vu32 *)0x1040043c = 0x00000002;
        *(vu32 *)0x10400440 = 0x01960192;
        *(vu32 *)0x10400444 = 0x00000000;
        *(vu32 *)0x10400448 = 0x00000000;
        *(vu32 *)0x1040045C = 0x00f00190;
        *(vu32 *)0x10400460 = 0x01c100d1;
        *(vu32 *)0x10400464 = 0x01920002;
        *(vu32 *)0x10400468 = 0x18300000;
        *(vu32 *)0x10400470 = 0x80341;
        *(vu32 *)0x10400474 = 0x00010501;
        *(vu32 *)0x10400478 = 0;
        *(vu32 *)0x10400490 = 0x000002D0;
        *(vu32 *)0x1040049C = 0x00000000;

        // Disco register
        for(vu32 i = 0; i < 256; i++)
            *(vu32 *)0x10400484 = 0x10101 * i;

        // Bottom screen
        *(vu32 *)0x10400500 = 0x000001c2;
        *(vu32 *)0x10400504 = 0x000000d1;
        *(vu32 *)0x10400508 = 0x000001c1;
        *(vu32 *)0x1040050c = 0x000001c1;
        *(vu32 *)0x10400510 = 0x000000cd;
        *(vu32 *)0x10400514 = 0x000000cf;
        *(vu32 *)0x10400518 = 0x000000d1;
        *(vu32 *)0x1040051c = 0x01c501c1;
        *(vu32 *)0x10400520 = 0x00010000;
        *(vu32 *)0x10400524 = 0x0000019d;
        *(vu32 *)0x10400528 = 0x00000052;
        *(vu32 *)0x1040052c = 0x00000192;
        *(vu32 *)0x10400530 = 0x00000192;
        *(vu32 *)0x10400534 = 0x0000004f;
        *(vu32 *)0x10400538 = 0x00000050;
        *(vu32 *)0x1040053c = 0x00000052;
        *(vu32 *)0x10400540 = 0x01980194;
        *(vu32 *)0x10400544 = 0x00000000;
        *(vu32 *)0x10400548 = 0x00000011;
        *(vu32 *)0x1040055C = 0x00f00140;
        *(vu32 *)0x10400560 = 0x01c100d1;
        *(vu32 *)0x10400564 = 0x01920052;
        *(vu32 *)0x10400568 = 0x18300000 + 0x46500;
        *(vu32 *)0x10400570 = 0x80301;
        *(vu32 *)0x10400574 = 0x00010501;
        *(vu32 *)0x10400578 = 0;
        *(vu32 *)0x10400590 = 0x000002D0;
        *(vu32 *)0x1040059C = 0x00000000;

        // Disco register
        for(vu32 i = 0; i < 256; i++)
            *(vu32 *)0x10400584 = 0x10101 * i;

        // Enable backlight
        i2cWriteRegister(I2C_DEV_MCU, 0x22, 0x2A);

        *(vu32 *)0x10400468 = 0x18300000;
        *(vu32 *)0x1040046c = 0x18300000;
        *(vu32 *)0x10400494 = 0x18300000;
        *(vu32 *)0x10400498 = 0x18300000;
        *(vu32 *)0x10400568 = 0x18346500;
        *(vu32 *)0x1040056c = 0x18346500;

        //Set CakeBrah framebuffers
        *((vu32 *)0x23FFFE00) = 0x18300000;
        *((vu32 *)0x23FFFE04) = 0x18300000;
        *((vu32 *)0x23FFFE08) = 0x18346500;

        //Clear ARM11 entry offset
        *arm11 = 0;

        //Wait for the entry to be set
        while(!*arm11);
        //Jump to it
        ((void (*)())*arm11)();
    }

    if(PDN_GPU_CNT == 0x1){
        *arm11 = (u32)ARM11;
        while(*arm11);
    }

    clearScreens();
}