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First proper commit.

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This commit is contained in:
Jack Walker 2020-03-17 00:31:30 -04:00
parent be78236d36
commit 087f561f77
14086 changed files with 1200489 additions and 1 deletions
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83
src/libultra_boot_O1/initialize.c Normal file
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#include <global.h>
#include <ultra64/hardware.h>
typedef struct
{
u32 ins_00; //lui k0, 0x8000
u32 ins_04; //addiu k0, k0, 0x39e0
u32 ins_08; //jr k0 ; __osException
u32 ins_0C; //nop
} struct_exceptionPreamble;
u64 osClockRate = 62500000;
u32 osViClock = VI_NTSC_CLOCK;
u32 __osShutdown = 0;
u32 __OSGlobalIntMask = 0x003FFF01;
u32 D_800145C0;
void __createSpeedParam(void)
{
__Dom1SpeedParam.type = DEVICE_TYPE_INIT;
__Dom1SpeedParam.latency = HW_REG(PI_BSD_DOM1_LAT_REG, u32);
__Dom1SpeedParam.pulse = HW_REG(PI_BSD_DOM1_PWD_REG, u32);
__Dom1SpeedParam.pageSize = HW_REG(PI_BSD_DOM1_PGS_REG, u32);
__Dom1SpeedParam.relDuration = HW_REG(PI_BSD_DOM1_RLS_REG, u32);
__Dom2SpeedParam.type = DEVICE_TYPE_INIT;
__Dom2SpeedParam.latency = HW_REG(PI_BSD_DOM2_LAT_REG, u32);
__Dom2SpeedParam.pulse = HW_REG(PI_BSD_DOM2_PWD_REG, u32);
__Dom2SpeedParam.pageSize = HW_REG(PI_BSD_DOM2_PGS_REG, u32);
__Dom2SpeedParam.relDuration = HW_REG(PI_BSD_DOM2_RLS_REG, u32);
}
void __osInitialize_common(void)
{
u32 sp2C;
D_800145C0 = 1;
__osSetSR(__osGetSR() | 0x20000000);
__osSetFpcCsr(0x1000800);
__osSetWatchLo(0x4900000);
while (__osSiRawReadIo((void*)0x1fc007fc, &sp2C))
;
while (__osSiRawWriteIo((void*)0x1fc007fc, sp2C | 8))
;
*(struct_exceptionPreamble*)0x80000000 = *(struct_exceptionPreamble*)__osExceptionPreamble; //TLB miss
*(struct_exceptionPreamble*)0x80000080 = *(struct_exceptionPreamble*)__osExceptionPreamble; //XTLB miss
*(struct_exceptionPreamble*)0x80000100 = *(struct_exceptionPreamble*)__osExceptionPreamble; //cache errors
*(struct_exceptionPreamble*)0x80000180 = *(struct_exceptionPreamble*)__osExceptionPreamble; //general exceptions
osWritebackDCache(0x80000000, 0x190);
osInvalICache(0x80000000, 0x190);
__createSpeedParam();
osUnmapTLBAll();
osMapTLBRdb();
osClockRate = (u64)((osClockRate * 3ll) / 4ull);
if (!osResetType)
bzero(osAppNmiBuffer, 0x40);
if (osTvType == 0)
osViClock = VI_PAL_CLOCK;
else if (osTvType == 2)
osViClock = VI_MPAL_CLOCK;
else
osViClock = VI_NTSC_CLOCK;
if (__osGetCause() & 0x1000)
while (true)
;
HW_REG(AI_CONTROL_REG, u32) = 1;
HW_REG(AI_DACRATE_REG, u32) = 0x3fff;
HW_REG(AI_BITRATE_REG, u32) = 0xf;
}
void __osInitialize_autodetect()
{
}