mirror of https://github.com/zeldaret/oot.git
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
#include "global.h"
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OSPiHandle __CartRomHandle;
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OSPiHandle* osCartRomInit() {
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register u32 a;
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register s32 status;
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register u32 prevInt;
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register u32 lastLatency;
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register u32 lastPageSize;
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register u32 lastRelDuration;
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register u32 lastPulse;
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static u32 D_8000AF10 = 1;
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__osPiGetAccess();
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if (!D_8000AF10) {
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__osPiRelAccess();
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return &__CartRomHandle;
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}
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D_8000AF10 = 0;
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__CartRomHandle.type = DEVICE_TYPE_CART;
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__CartRomHandle.baseAddress = 0xb0000000;
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__CartRomHandle.domain = 0;
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__CartRomHandle.speed = 0;
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bzero(&__CartRomHandle.transferInfo, sizeof(__OSTranxInfo));
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while (status = HW_REG(PI_STATUS_REG, u32), status & PI_STATUS_ERROR) {
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;
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}
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lastLatency = HW_REG(PI_BSD_DOM1_LAT_REG, u32);
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lastPageSize = HW_REG(PI_BSD_DOM1_PGS_REG, u32);
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lastRelDuration = HW_REG(PI_BSD_DOM1_RLS_REG, u32);
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lastPulse = HW_REG(PI_BSD_DOM1_PWD_REG, u32);
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HW_REG(PI_BSD_DOM1_LAT_REG, u32) = 0xff;
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HW_REG(PI_BSD_DOM1_PGS_REG, u32) = 0;
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HW_REG(PI_BSD_DOM1_RLS_REG, u32) = 3;
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HW_REG(PI_BSD_DOM1_PWD_REG, u32) = 0xff;
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a = HW_REG(__CartRomHandle.baseAddress, u32);
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__CartRomHandle.latency = a & 0xFF;
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__CartRomHandle.pageSize = (a >> 0x10) & 0xF;
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__CartRomHandle.relDuration = (a >> 0x14) & 0xF;
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__CartRomHandle.pulse = (a >> 8) & 0xFF;
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HW_REG(PI_BSD_DOM1_LAT_REG, u32) = lastLatency;
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HW_REG(PI_BSD_DOM1_PGS_REG, u32) = lastPageSize;
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HW_REG(PI_BSD_DOM1_RLS_REG, u32) = lastRelDuration;
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HW_REG(PI_BSD_DOM1_PWD_REG, u32) = lastPulse;
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prevInt = __osDisableInt();
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__CartRomHandle.next = __osPiTable;
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__osPiTable = &__CartRomHandle;
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__osRestoreInt(prevInt);
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__osPiRelAccess();
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return &__CartRomHandle;
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}
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