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#include "dolphin/os.h"
#define EXI_TX 0x800400u
#define EXI_MAGIC 0xa5ff005a
static s32 Chan;
static u32 Dev;
static u32 Enabled = 0;
static u32 BarnacleEnabled = 0;
static BOOL ProbeBarnacle(s32 chan, u32 dev, u32* revision) {
BOOL err;
u32 cmd;
if (chan != 2 && dev == 0 && !EXIAttach(chan, NULL)) {
return FALSE;
}
err = !EXILock(chan, dev, NULL);
if (!err) {
err = !EXISelect(chan, dev, EXI_FREQ_1M);
if (!err) {
cmd = 0x20011300;
err = FALSE;
err |= !EXIImm(chan, &cmd, 4, EXI_WRITE, NULL);
err |= !EXISync(chan);
err |= !EXIImm(chan, revision, 4, EXI_READ, NULL);
err |= !EXISync(chan);
err |= !EXIDeselect(chan);
}
EXIUnlock(chan);
}
if (chan != 2 && dev == 0) {
EXIDetach(chan);
}
if (err) {
return FALSE;
}
return (*revision != 0xFFFFFFFF) ? TRUE : FALSE;
}
void __OSEnableBarnacle(s32 chan, u32 dev) {
u32 id;
if (EXIGetID(chan, dev, &id)) {
switch (id) {
case 0xffffffff:
case EXI_MEMORY_CARD_59:
case EXI_MEMORY_CARD_123:
case EXI_MEMORY_CARD_251:
case EXI_MEMORY_CARD_507:
case EXI_USB_ADAPTER:
case EXI_NPDP_GDEV:
case EXI_MODEM:
case EXI_MARLIN:
case 0x04220000:
case 0x04020100:
case 0x04020200:
case 0x04020300:
case 0x04040404:
case 0x04060000:
case 0x04120000:
case 0x04130000:
case 0x80000000 | EXI_MEMORY_CARD_59:
case 0x80000000 | EXI_MEMORY_CARD_123:
case 0x80000000 | EXI_MEMORY_CARD_251:
case 0x80000000 | EXI_MEMORY_CARD_507:
break;
default:
if (ProbeBarnacle(chan, dev, &id)) {
Chan = chan;
Dev = dev;
Enabled = BarnacleEnabled = EXI_MAGIC;
}
break;
}
}
}
u32 InitializeUART(u32 baudRate) {
if (BarnacleEnabled == EXI_MAGIC) {
return 0;
}
if (!(OSGetConsoleType() & OS_CONSOLE_DEVELOPMENT)) {
Enabled = 0;
return 2;
} else {
Chan = 0;
Dev = 1;
Enabled = EXI_MAGIC;
return 0;
}
}
u32 ReadUARTN(void* bytes, unsigned long length) { return 4; }
static int QueueLength(void) {
u32 cmd;
if (!EXISelect(Chan, Dev, EXI_FREQ_8M))
return -1;
cmd = EXI_TX << 6;
EXIImm(Chan, &cmd, 4, EXI_WRITE, NULL);
EXISync(Chan);
EXIImm(Chan, &cmd, 1, EXI_READ, NULL);
EXISync(Chan);
EXIDeselect(Chan);
return 16 - (int)((cmd >> 24) & 0xff);
}
u32 WriteUARTN(const void* buf, unsigned long len) {
u32 cmd;
int qLen;
long xLen;
char* ptr;
BOOL locked;
u32 error;
if (Enabled != EXI_MAGIC)
return 2;
locked = EXILock(Chan, Dev, 0);
if (!locked) {
return 0;
}
for (ptr = (char*)buf; ptr - buf < len; ptr++) {
if (*ptr == '\n')
*ptr = '\r';
}
error = 0;
cmd = (EXI_TX | 0x2000000) << 6;
while (len) {
qLen = QueueLength();
if (qLen < 0) {
error = 3;
break;
}
if (qLen < 12 && qLen < len)
continue;
if (!EXISelect(Chan, Dev, EXI_FREQ_8M)) {
error = 3;
break;
}
EXIImm(Chan, &cmd, 4, EXI_WRITE, NULL);
EXISync(Chan);
while (qLen && len) {
if (qLen < 4 && qLen < len)
break;
xLen = (len < 4) ? (long)len : 4;
EXIImm(Chan, (void*)buf, xLen, EXI_WRITE, NULL);
(u8*)buf += xLen;
len -= xLen;
qLen -= xLen;
EXISync(Chan);
}
EXIDeselect(Chan);
}
EXIUnlock(Chan);
return error;
}
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