X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c13afca1f5278a4aa9bad0bcbfc4f82248fc8e4d..852ecedc16ee8220c8208828c55d14a668e69c30:/armsrc/fpgaloader.c?ds=inline

diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c
index 45294d60..8693d6b5 100644
--- a/armsrc/fpgaloader.c
+++ b/armsrc/fpgaloader.c
@@ -115,8 +115,7 @@ void SetupSpi(int mode)
 // Set up the synchronous serial port with the set of options that fits
 // the FPGA mode. Both RX and TX are always enabled.
 //-----------------------------------------------------------------------------
-void FpgaSetupSsc(uint8_t FPGA_mode)
-{
+void FpgaSetupSsc(uint16_t FPGA_mode) {
 	// First configure the GPIOs, and get ourselves a clock.
 	AT91C_BASE_PIOA->PIO_ASR =
 		GPIO_SSC_FRAME	|
@@ -130,21 +129,21 @@ void FpgaSetupSsc(uint8_t FPGA_mode)
 	// Now set up the SSC proper, starting from a known state.
 	AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
 
-	// RX clock comes from TX clock, RX starts when TX starts, data changes
-	// on RX clock rising edge, sampled on falling edge
+	// RX clock comes from TX clock, RX starts on Transmit Start,
+	// data and frame signal is sampled on falling edge of RK
 	AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1);
 
 	// 8, 16 or 32 bits per transfer, no loopback, MSB first, 1 transfer per sync
 	// pulse, no output sync
-	if ((FPGA_mode & 0xe0) == FPGA_MAJOR_MODE_HF_READER_RX_XCORR) {
+	if ((FPGA_mode & 0x1c0) == FPGA_MAJOR_MODE_HF_READER && FpgaGetCurrent() == FPGA_BITSTREAM_HF) {
 		AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
 	} else {
 		AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
 	}		
 
 	// TX clock comes from TK pin, no clock output, outputs change on falling
-	// edge of TK, sample on rising edge of TK, start on positive-going edge of sync
-	AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) |	SSC_CLOCK_MODE_START(5);
+	// edge of TK, frame sync is sampled on rising edge of TK, start TX on rising edge of TF
+	AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
 
 	// tx framing is the same as the rx framing
 	AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR;
@@ -166,7 +165,7 @@ bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count)
 	AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf;           // transfer to this memory address
 	AT91C_BASE_PDC_SSC->PDC_RCR = sample_count;             // transfer this many samples
 	AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf;          // next transfer to same memory address
-	AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count;            // ... with same number of samples	AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;	        // go!
+	AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count;            // ... with same number of samples
 	AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;         // go!
 	return true;
 }
@@ -417,8 +416,10 @@ void FpgaDownloadAndGo(int bitstream_version)
 	uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
 	
 	// check whether or not the bitstream is already loaded
-	if (downloaded_bitstream == bitstream_version)
+	if (downloaded_bitstream == bitstream_version) {
+		FpgaEnableTracing();
 		return;
+	}
 
 	// make sure that we have enough memory to decompress
 	BigBuf_free(); BigBuf_Clear_ext(false);	
@@ -448,22 +449,32 @@ void FpgaDownloadAndGo(int bitstream_version)
 // The bit format is:  C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
 // where C is the 4 bit command and D is the 12 bit data
 //-----------------------------------------------------------------------------
-void FpgaSendCommand(uint16_t cmd, uint16_t v)
-{
+void FpgaSendCommand(uint16_t cmd, uint16_t v) {
 	SetupSpi(SPI_FPGA_MODE);
-	while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);		// wait for the transfer to complete
+	while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);	// wait for the transfer to complete
 	AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v;		// send the data
 }
+
 //-----------------------------------------------------------------------------
 // Write the FPGA setup word (that determines what mode the logic is in, read
 // vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to
 // avoid changing this function's occurence everywhere in the source code.
 //-----------------------------------------------------------------------------
-void FpgaWriteConfWord(uint8_t v)
-{
+void FpgaWriteConfWord(uint16_t v) {
 	FpgaSendCommand(FPGA_CMD_SET_CONFREG, v);
 }
 
+//-----------------------------------------------------------------------------
+// enable/disable FPGA internal tracing
+//-----------------------------------------------------------------------------
+void FpgaEnableTracing(void) {
+	FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 1);
+}
+
+void FpgaDisableTracing(void) {
+	FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 0);
+}
+
 //-----------------------------------------------------------------------------
 // Set up the CMOS switches that mux the ADC: four switches, independently
 // closable, but should only close one at a time. Not an FPGA thing, but