piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-27 00:00:07 -06:00
Code Issues Packages Projects Releases Wiki Activity

verify BIOS and firmware before booting games/firmware

Browse Source
This commit is contained in:
Arisotura
2020-05-17 05:42:09 +02:00
parent 49b24ea2b3
commit c5c9434ac9
5 changed files with 149 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
src/frontend/Util_ROM.cpp
View File

@ -57,8 +57,77 @@ void SetupSRAMPath(int slot)
strncpy(SRAMPath[slot] + strlen(ROMPath[slot]) - 3, "sav", 3);
}
bool LoadBIOS()
int VerifyDSBIOS()
{
FILE* f;
long len;
f = Platform::OpenLocalFile(Config::BIOS9Path, "rb");
if (!f) return Load_BIOS9Missing;
fseek(f, 0, SEEK_END);
len = ftell(f);
if (len != 0x1000)
{
fclose(f);
return Load_BIOS9Bad;
}
fclose(f);
f = Platform::OpenLocalFile(Config::BIOS7Path, "rb");
if (!f) return Load_BIOS7Missing;
fseek(f, 0, SEEK_END);
len = ftell(f);
if (len != 0x4000)
{
fclose(f);
return Load_BIOS7Bad;
}
fclose(f);
return Load_OK;
}
int VerifyDSFirmware()
{
FILE* f;
long len;
f = Platform::OpenLocalFile(Config::FirmwarePath, "rb");
if (!f) return Load_FirmwareMissing;
fseek(f, 0, SEEK_END);
len = ftell(f);
if (len == 0x20000)
{
// 128KB firmware, not bootable
fclose(f);
return Load_FirmwareNotBootable;
}
else if (len != 0x40000 && len != 0x80000)
{
fclose(f);
return Load_FirmwareBad;
}
fclose(f);
return Load_OK;
}
int LoadBIOS()
{
int res;
res = VerifyDSBIOS();
if (res != Load_OK) return res;
res = VerifyDSFirmware();
if (res != Load_OK) return res;
// TODO:
// original code in the libui frontend called NDS::LoadGBAROM() if needed
// should this be carried over here?
@ -71,12 +140,26 @@ bool LoadBIOS()
SavestateLoaded = false;
// TODO: error reporting?
return true;
return Load_OK;
}
bool LoadROM(const char* file, int slot)
int LoadROM(const char* file, int slot)
{
int res;
bool directboot = Config::DirectBoot != 0;
res = VerifyDSBIOS();
if (res != Load_OK) return res;
res = VerifyDSFirmware();
if (res != Load_OK)
{
if (res == Load_FirmwareNotBootable)
directboot = true;
else
return res;
}
char oldpath[1024];
char oldsram[1024];
strncpy(oldpath, ROMPath[slot], 1024);
@ -88,28 +171,29 @@ bool LoadROM(const char* file, int slot)
SetupSRAMPath(0);
SetupSRAMPath(1);
if (slot == ROMSlot_NDS && NDS::LoadROM(ROMPath[slot], SRAMPath[slot], Config::DirectBoot))
if (slot == ROMSlot_NDS && NDS::LoadROM(ROMPath[slot], SRAMPath[slot], directboot))
{
SavestateLoaded = false;
// Reload the inserted GBA cartridge (if any)
// TODO: report failure there??
if (ROMPath[ROMSlot_GBA][0] != '\0') NDS::LoadGBAROM(ROMPath[ROMSlot_GBA], SRAMPath[ROMSlot_GBA]);
strncpy(PrevSRAMPath[slot], SRAMPath[slot], 1024); // safety
return true;
return Load_OK;
}
else if (slot == ROMSlot_GBA && NDS::LoadGBAROM(ROMPath[slot], SRAMPath[slot]))
{
SavestateLoaded = false;
strncpy(PrevSRAMPath[slot], SRAMPath[slot], 1024); // safety
return true;
return Load_OK;
}
else
{
strncpy(ROMPath[slot], oldpath, 1024);
strncpy(SRAMPath[slot], oldsram, 1024);
return false;
return Load_ROMLoadError;
}
}