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2278bcb2c3
* progress * z64.h issues sorted * remove variables.h * format * n64 fix * another fix * did the wrong fix * fix libleo * fix bss * review * remove instead of comment
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
#include "ultra64.h"
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OSPiHandle __DriveRomHandle;
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OSPiHandle* osDriveRomInit(void) {
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#if PLATFORM_IQUE && defined(NON_MATCHING)
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// On iQue, the compiled output of this file is patched so that the
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// `!first` check is always taken. For non-matching builds, we edit the
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// source code instead.
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static u32 first = false;
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#else
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static u32 first = true;
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#endif
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register s32 status;
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register u32 value;
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register u32 prevInt;
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__osPiGetAccess();
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if (!first) {
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__osPiRelAccess();
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return &__DriveRomHandle;
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}
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first = false;
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__DriveRomHandle.type = DEVICE_TYPE_BULK;
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__DriveRomHandle.baseAddress = PHYS_TO_K1(PI_DOM1_ADDR1);
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__DriveRomHandle.domain = PI_DOMAIN1;
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__DriveRomHandle.speed = 0;
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bzero(&__DriveRomHandle.transferInfo, sizeof(__OSTranxInfo));
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status = IO_READ(PI_STATUS_REG);
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while (status & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
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status = IO_READ(PI_STATUS_REG);
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}
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IO_WRITE(PI_BSD_DOM1_LAT_REG, 255);
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IO_WRITE(PI_BSD_DOM1_PGS_REG, 0);
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IO_WRITE(PI_BSD_DOM1_RLS_REG, 3);
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IO_WRITE(PI_BSD_DOM1_PWD_REG, 255);
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value = IO_READ(__DriveRomHandle.baseAddress);
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__DriveRomHandle.latency = value & 0xFF;
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__DriveRomHandle.pulse = (value >> 8) & 0xFF;
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__DriveRomHandle.pageSize = (value >> 0x10) & 0xF;
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__DriveRomHandle.relDuration = (value >> 0x14) & 0xF;
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IO_WRITE(PI_BSD_DOM1_LAT_REG, __DriveRomHandle.latency);
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IO_WRITE(PI_BSD_DOM1_PGS_REG, __DriveRomHandle.pageSize);
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IO_WRITE(PI_BSD_DOM1_RLS_REG, __DriveRomHandle.relDuration);
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IO_WRITE(PI_BSD_DOM1_PWD_REG, __DriveRomHandle.pulse);
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__osCurrentHandle[__DriveRomHandle.domain]->type = __DriveRomHandle.type;
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__osCurrentHandle[__DriveRomHandle.domain]->latency = __DriveRomHandle.latency;
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__osCurrentHandle[__DriveRomHandle.domain]->pageSize = __DriveRomHandle.pageSize;
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__osCurrentHandle[__DriveRomHandle.domain]->relDuration = __DriveRomHandle.relDuration;
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__osCurrentHandle[__DriveRomHandle.domain]->pulse = __DriveRomHandle.pulse;
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prevInt = __osDisableInt();
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__DriveRomHandle.next = __osPiTable;
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__osPiTable = &__DriveRomHandle;
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__osRestoreInt(prevInt);
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__osPiRelAccess();
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return &__DriveRomHandle;
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}
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