src/os/osCartRomInit.c


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#include "libultra_internal.h"

#include <PR/os_vi.h>
#include <PR/os_internal.h>
#include <PR/R4300.h>
#include <PR/rcp.h>
#include <PR/os_pi.h>
#include <libultraship.h>

OSPiHandle CartRomHandle;

OSPiHandle* osCartRomInit(void) {
    u32 domain;
    u32 saveMask;

    domain = 0;

    if (CartRomHandle.baseAddress == PHYS_TO_K1(PI_DOM1_ADDR2)) {
        return &CartRomHandle;
    }

    CartRomHandle.type = DEVICE_TYPE_CART;
    CartRomHandle.baseAddress = PHYS_TO_K1(PI_DOM1_ADDR2);
    osPiRawReadIo(0, &domain);
    CartRomHandle.latency = domain & 0xff;
    CartRomHandle.pulse = (domain >> 8) & 0xff;
    CartRomHandle.pageSize = (domain >> 0x10) & 0xf;
    CartRomHandle.relDuration = (domain >> 0x14) & 0xf;
    CartRomHandle.domain = PI_DOMAIN1;
    // CartRomHandle.speed = 0;

    bzero(&CartRomHandle.transferInfo, sizeof(__OSTranxInfo));

    saveMask = __osDisableInt();
    CartRomHandle.next = __osPiTable;
    __osPiTable = &CartRomHandle;
    __osRestoreInt(saveMask);

    return &CartRomHandle;
}