CyU3PReturnStatus_t NuandWriteOtp(size_t offset, size_t size, void *buf) {
CyU3PReturnStatus_t status;
status = NuandEnso();
status = CyFxSpiTransfer(offset, size, buf, CyFalse);
status = NuandExso();
return status;
}
CyBool_t NuandLoadFromFlash(int fpga_len)
{
uint8_t *ptr;
int nleft;
CyBool_t retval = CyFalse;
CyU3PDmaBuffer_t dbuf;
uint32_t sector_idx = 1025;
uint32_t prodCnt, consCnt;
int32_t i;
CyU3PDmaState_t state;
CyU3PReturnStatus_t apiRetStatus = CY_U3P_SUCCESS;
NuandFpgaConfigStart();
ptr = CyU3PDmaBufferAlloc(4096);
apiRetStatus = CyFxSpiInit(0x100);
CyFxSpiFastRead(CyTrue);
apiRetStatus = CyU3PSpiSetClock(30000000);
if (FpgaBeginProgram() != CY_U3P_SUCCESS) {
goto out;
}
nleft = fpga_len;
while(nleft) {
apiRetStatus = CyU3PDmaChannelGetStatus(&glChHandlebladeRFUtoP, &state, &prodCnt, &consCnt);
if (apiRetStatus)
break;
CyU3PDmaChannelAbort(&glChHandlebladeRFUtoP);
apiRetStatus = CyU3PDmaChannelGetStatus(&glChHandlebladeRFUtoP, &state, &prodCnt, &consCnt);
if (apiRetStatus)
break;
CyU3PDmaChannelReset(&glChHandlebladeRFUtoP);
apiRetStatus = CyU3PDmaChannelGetStatus(&glChHandlebladeRFUtoP, &state, &prodCnt, &consCnt);
if (apiRetStatus)
break;
if (CyFxSpiTransfer(sector_idx++, 0x100, ptr, CyTrue) != CY_U3P_SUCCESS)
break;
uint8_t *end_in_b = &( ((uint8_t *)ptr)[255]);
uint16_t *end_in_w = &( ((uint16_t *)ptr)[255]);
/* Flip the bits in such a way that the FPGA can be programmed
* This mapping can be determined by looking at the schematic */
for (i = 255; i >= 0; i--)
*end_in_w-- = glFlipLut[*end_in_b--];
dbuf.buffer = ptr;
dbuf.count = ((nleft > 256) ? 256 : (nleft + 2)) * 2;
dbuf.size = 4096;
dbuf.status = 0;
apiRetStatus = CyU3PDmaChannelSetupSendBuffer(&glChHandlebladeRFUtoP, &dbuf);
if (apiRetStatus)
break;
apiRetStatus = CyU3PDmaChannelGetStatus(&glChHandlebladeRFUtoP, &state, &prodCnt, &consCnt);
if (apiRetStatus)
break;
apiRetStatus = CyU3PDmaChannelWaitForCompletion(&glChHandlebladeRFUtoP, 100);
if (apiRetStatus)
break;
apiRetStatus = CyU3PDmaChannelGetStatus(&glChHandlebladeRFUtoP, &state, &prodCnt, &consCnt);
if (apiRetStatus)
break;
if (nleft > 256) {
nleft -= 256;
} else {
retval = CyTrue;
nleft = 0;
break;
}
}
out:
CyU3PDmaBufferFree(ptr);
CyU3PSpiDeInit();
CyFxSpiFastRead(CyFalse);
NuandFpgaConfigStop();
return retval;
}
