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#include "libultra_internal.h"
#include <stubs.h>
#include "hardware.h"
#include <macros.h>
#define PIF_ADDR_START (void*) 0x1FC007FC
typedef struct {
u32 instr00;
u32 instr01;
u32 instr02;
u32 instr03;
} exceptionPreamble;
u32 D_80194040;
u64 osClockRate = 62500000;
u32 __osShutdown = 0;
u32 __OSGlobalIntMask = OS_IM_ALL;
u32 D_800EA5F0 = 0;
#define EXCEPTION_TLB_MISS 0x80000000
#define EXCEPTION_XTLB_MISS 0x80000080
#define EXCEPTION_CACHE_ERROR 0x80000100
#define EXCEPTION_GENERAL 0x80000180
extern u32 osResetType;
extern exceptionPreamble __osExceptionPreamble;
void osInitialize(void) {
u32 sp34;
u32 sp30 = 0;
UNUSED u32 eu_sp34;
UNUSED u32 eu_sp30;
UNUSED u32 sp2c;
D_80194040 = true;
__osSetSR(__osGetSR() | 0x20000000);
__osSetFpcCsr(0x01000800);
while (__osSiRawReadIo(PIF_ADDR_START, &sp34)) {
;
}
while (__osSiRawWriteIo(PIF_ADDR_START, sp34 | 8)) {
;
}
*(exceptionPreamble*) EXCEPTION_TLB_MISS = __osExceptionPreamble;
*(exceptionPreamble*) EXCEPTION_XTLB_MISS = __osExceptionPreamble;
*(exceptionPreamble*) EXCEPTION_CACHE_ERROR = __osExceptionPreamble;
*(exceptionPreamble*) EXCEPTION_GENERAL = __osExceptionPreamble;
osWritebackDCache((void*) 0x80000000, EXCEPTION_GENERAL + sizeof(exceptionPreamble) - EXCEPTION_TLB_MISS);
osInvalICache((void*) 0x80000000, EXCEPTION_GENERAL + sizeof(exceptionPreamble) - EXCEPTION_TLB_MISS);
osMapTLBRdb();
osPiRawReadIo(4, &sp30);
sp30 &= ~0xf;
if (sp30) {
osClockRate = sp30;
}
osClockRate = osClockRate * 3 / 4;
if (osResetType == RESET_TYPE_COLD_RESET) {
memset(osAppNmiBuffer, 0, sizeof(osAppNmiBuffer));
}
eu_sp30 = HW_REG(PI_STATUS_REG, u32);
while (eu_sp30 & PI_STATUS_ERROR) {
eu_sp30 = HW_REG(PI_STATUS_REG, u32);
};
if (!((eu_sp34 = HW_REG(ASIC_STATUS, u32)) & _64DD_PRESENT_MASK)) {
D_800EA5F0 = 1;
__osSetHWIntrRoutine(1, &__osLeoInterrupt);
} else {
D_800EA5F0 = 0;
}
}
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