cfgnor.c

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#include <stdlib.h>
#include <3ds.h>

Handle CFGNOR_handle = 0;

Result CFGNOR_Initialize(u8 value)
{
    Result ret = 0;
    u32 *cmdbuf = getThreadCommandBuffer();

    ret = srvGetServiceHandle(&CFGNOR_handle, "cfg:nor");
    if(ret!=0)return ret;

    cmdbuf[0] = 0x00010040;
    cmdbuf[1] = (u32)value;

    if((ret = svcSendSyncRequest(CFGNOR_handle))!=0)return ret;

    ret = (Result)cmdbuf[1];
    return ret;
}

Result CFGNOR_Shutdown()
{
    Result ret = 0;
    u32 *cmdbuf = getThreadCommandBuffer();

    cmdbuf[0] = 0x00020000;

    if((ret = svcSendSyncRequest(CFGNOR_handle))!=0)return ret;
    ret = (Result)cmdbuf[1];

    svcCloseHandle(CFGNOR_handle);
    CFGNOR_handle = 0;

    return ret;
}

Result CFGNOR_ReadData(u32 offset, u32 *buf, u32 size)
{
    Result ret = 0;
    u32 *cmdbuf = getThreadCommandBuffer();

    cmdbuf[0] = 0x00050082;
    cmdbuf[1] = offset;
    cmdbuf[2] = size;
    cmdbuf[3] = (size<<4) | 12;
    cmdbuf[4] = (u32)buf;

    if((ret = svcSendSyncRequest(CFGNOR_handle))!=0)return ret;

    ret = (Result)cmdbuf[1];
    return ret;
}

Result CFGNOR_WriteData(u32 offset, u32 *buf, u32 size)
{
    u32 ret = 0;
    u32 *cmdbuf = getThreadCommandBuffer();

    cmdbuf[0] = 0x00060082;
    cmdbuf[1] = offset;
    cmdbuf[2] = size;
    cmdbuf[3] = (size<<4) | 10;
    cmdbuf[4] = (u32)buf;

    if((ret = svcSendSyncRequest(CFGNOR_handle))!=0)return ret;

    ret = (Result)cmdbuf[1];
    return ret;
}

Result CFGNOR_DumpFlash(u32 *buf, u32 size)
{
    Result ret = 0;
    u32 pos=0;
    u32 chunksize = 0x100;

    for(pos=0; pos<size; pos+=chunksize)
    {
        if(size-pos < chunksize)chunksize = size-pos;

        ret = CFGNOR_ReadData(pos, &buf[pos>>2], chunksize);
        if(ret!=0)break;
    }

    return ret;
}

Result CFGNOR_WriteFlash(u32 *buf, u32 size)
{
    Result ret = 0;
    u32 pos=0;
    u32 chunksize = 0x100;

    for(pos=0; pos<size; pos+=chunksize)
    {
        if(size-pos < chunksize)chunksize = size-pos;

        ret = CFGNOR_WriteData(pos, &buf[pos>>2], chunksize);
        if(ret!=0)break;
    }

    return ret;
}