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* allow 128KB firmwares (DSi/3DS dumps)

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* document firmware sizes better
This commit is contained in:
StapleButter
2017-08-05 19:13:55 +02:00
parent 4a899ebe3f
commit 0106406aff
2 changed files with 38 additions and 9 deletions
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40
src/SPI.cpp
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@ -100,10 +100,23 @@ void Reset()
fseek(f, 0, SEEK_END);
FirmwareLength = (u32)ftell(f);
if (FirmwareLength != 0x40000 && FirmwareLength != 0x80000)
if (FirmwareLength != 0x20000 && FirmwareLength != 0x40000 && FirmwareLength != 0x80000)
{
printf("Bad firmware size %d, assuming 256K\n", FirmwareLength);
FirmwareLength = 0x40000;
printf("Bad firmware size %d, ", FirmwareLength);
// pick the nearest power-of-two length
FirmwareLength |= (FirmwareLength >> 1);
FirmwareLength |= (FirmwareLength >> 2);
FirmwareLength |= (FirmwareLength >> 4);
FirmwareLength |= (FirmwareLength >> 8);
FirmwareLength |= (FirmwareLength >> 16);
FirmwareLength++;
// ensure it's a sane length
if (FirmwareLength > 0x80000) FirmwareLength = 0x80000;
else if (FirmwareLength < 0x20000) FirmwareLength = 0x20000;
printf("assuming %d\n", FirmwareLength);
}
Firmware = new u8[FirmwareLength];
@ -352,7 +365,7 @@ u8 Read()
}
void Write(u8 val, u32 hold)
{
{printf("SPI powerman %02X %d\n", val, hold?1:0);
if (!hold)
{
Hold = 0;
@ -369,15 +382,26 @@ void Write(u8 val, u32 hold)
if (DataPos == 1)
{
u32 regid = Index & 0x07;
if (Index & 0x80)
{
Data = Registers[Index & 0x07];
Data = Registers[regid];
}
else
{
Registers[Index & 0x07] =
(Registers[Index & 0x07] & ~RegMasks[Index & 0x07]) |
(val & RegMasks[Index & 0x07]);
Registers[regid] = (Registers[regid] & ~RegMasks[regid]) | (val & RegMasks[regid]);
switch (regid)
{
case 0:
if (val & 0x40) printf("DS shutdown\n");
printf("power %02X\n", val);
break;
case 4:
printf("brightness %02X\n", val);
break;
}
}
}
else