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/**
* File: sys_initial_check.c
* Description: Functions for checking for the presence of the Expansion Pak and the correct TV type (PAL/NTSC/MPAL),
* and functions for printing error messages directly to screen if not found or incorrect.
*
* These checks are some of the first functions run in Main, before even setting up the system heap, and any image files
* are DMA'd directly to fixed RAM addresses.
*/
#include "global.h"
#include "fault.h"
#include "misc/locerrmsg/locerrmsg.h"
#include "misc/memerrmsg/memerrmsg.h"
#define LOCERRMSG_WIDTH 208
#define LOCERRMSG_HEIGHT 16
#define NUMBEROF_LOCERRMSGS 1
#define MEMERRMSG_WIDTH 128
#define MEMERRMSG_HEIGHT 37
#define NUMBEROF_MEMERRMSGS 2
#define SIZEOF_LOCERRMSG (LOCERRMSG_WIDTH * LOCERRMSG_HEIGHT / 2 * NUMBEROF_LOCERRMSGS)
#define SIZEOF_MEMERRMSG (MEMERRMSG_WIDTH * MEMERRMSG_HEIGHT / 2 * NUMBEROF_MEMERRMSGS)
// Address with enough room after to load either of the error message image files before the fault screen buffer at the
// end of RDRAM
#define CHECK_ERRMSG_STATIC_SEGMENT (u8*)((uintptr_t)FAULT_FB_ADDRESS - MAX(SIZEOF_LOCERRMSG, SIZEOF_MEMERRMSG))
void Check_WriteRGBA16Pixel(u16* buffer, u32 x, u32 y, u32 value) {
if (value & RGBA16_PIXEL_OPAQUE) {
(&buffer[x])[y * SCREEN_WIDTH] = value;
}
}
void Check_WriteI4Pixel(u16* buffer, u32 x, u32 y, u32 value) {
Check_WriteRGBA16Pixel(buffer, x, y, value * GPACK_RGBA5551(16, 16, 16, 0) + GPACK_RGBA5551(12, 12, 12, 1));
}
/**
* x and y are the coordinates of the bottom-left corner.
*/
void Check_DrawI4Texture(u16* buffer, s32 x, s32 y, s32 width, s32 height, u8* texture) {
s32 v;
s32 u;
u8 pixelPair;
u8* pixelPairPtr = texture;
// I4 textures are bitpacked 2 pixels per byte, so this writes a pair of pixels in each iteration using bitmasking.
for (v = 0; v < height; v++) {
for (u = 0; u < width; u += 2, pixelPairPtr++) {
pixelPair = *pixelPairPtr;
Check_WriteI4Pixel(buffer, x + u, y + v, pixelPair >> 4);
pixelPair = *pixelPairPtr;
Check_WriteI4Pixel(buffer, x + u + 1, y + v, pixelPair & 0xF);
}
}
}
void Check_ClearRGBA16(u16* buffer) {
u32 x;
u32 y;
for (y = 0; y < SCREEN_HEIGHT; y++) {
for (x = 0; x < SCREEN_WIDTH; x++) {
Check_WriteRGBA16Pixel(buffer, x, y, 1);
}
}
}
/**
* Draw error message textures directly to a screen buffer at the end of normal RDRAM
*/
void Check_DrawExpansionPakErrorMessage(void) {
DmaMgr_SendRequest0(CHECK_ERRMSG_STATIC_SEGMENT, SEGMENT_ROM_START(memerrmsg), SEGMENT_SIZE(memerrmsg));
Check_ClearRGBA16((u16*)FAULT_FB_ADDRESS);
Check_DrawI4Texture((u16*)FAULT_FB_ADDRESS, 96, 71, MEMERRMSG_WIDTH, MEMERRMSG_HEIGHT, CHECK_ERRMSG_STATIC_SEGMENT);
Check_DrawI4Texture((u16*)FAULT_FB_ADDRESS, 96, 127, MEMERRMSG_WIDTH, MEMERRMSG_HEIGHT,
CHECK_ERRMSG_STATIC_SEGMENT + MEMERRMSG_WIDTH * MEMERRMSG_HEIGHT / 2);
osWritebackDCacheAll();
osViSwapBuffer((u16*)FAULT_FB_ADDRESS);
osViBlack(false);
}
/**
* Draw error message texture directly to a screen buffer at the end of normal RDRAM
*/
void Check_DrawRegionLockErrorMessage(void) {
DmaMgr_SendRequest0(CHECK_ERRMSG_STATIC_SEGMENT, SEGMENT_ROM_START(locerrmsg), SEGMENT_SIZE(locerrmsg));
Check_ClearRGBA16((u16*)FAULT_FB_ADDRESS);
Check_DrawI4Texture((u16*)FAULT_FB_ADDRESS, 56, 112, LOCERRMSG_WIDTH, LOCERRMSG_HEIGHT,
CHECK_ERRMSG_STATIC_SEGMENT);
osWritebackDCacheAll();
osViSwapBuffer((u16*)FAULT_FB_ADDRESS);
osViBlack(false);
}
/**
* If Expansion pak is not installed, display error message until console is turned off
*/
void Check_ExpansionPak(void) {
// Expansion pak installed
if (osMemSize >= 0x800000) {
return;
}
Check_DrawExpansionPakErrorMessage();
osDestroyThread(NULL);
while (true) {}
}
/**
* If region is not NTSC or MPAL, display error message until console is turned off
*/
void Check_RegionIsSupported(void) {
s32 regionSupported = false;
if ((osTvType == OS_TV_NTSC) || (osTvType == OS_TV_MPAL)) {
regionSupported = true;
}
if (!regionSupported) {
Check_DrawRegionLockErrorMessage();
osDestroyThread(NULL);
while (true) {}
}
}
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