X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/25056d8b470d9e4b71c9205faf617e4b3f80df33..refs/pull/504/head:/armsrc/fpgaloader.c

diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c
index be0d87d6..c0b04f3c 100644
--- a/armsrc/fpgaloader.c
+++ b/armsrc/fpgaloader.c
@@ -26,13 +26,15 @@ extern void Dbprintf(const char *fmt, ...);
 static int downloaded_bitstream = FPGA_BITSTREAM_ERR;
 
 // this is where the bitstreams are located in memory:
-extern uint8_t _binary_fpga_lf_bit_start, _binary_fpga_lf_bit_end;
-extern uint8_t _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end;
+extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end;
+
 static uint8_t *fpga_image_ptr = NULL;
+static uint32_t uncompressed_bytes_cnt;
 
 static const uint8_t _bitparse_fixed_header[] = {0x00, 0x09, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x00, 0x00, 0x01};
 #define FPGA_BITSTREAM_FIXED_HEADER_SIZE	sizeof(_bitparse_fixed_header)
-#define OUTPUT_BUFFER_LEN 80
+#define OUTPUT_BUFFER_LEN 		80
+#define FPGA_INTERLEAVE_SIZE 	288
 
 //-----------------------------------------------------------------------------
 // Set up the Serial Peripheral Interface as master
@@ -156,9 +158,7 @@ void FpgaSetupSsc(void)
 //-----------------------------------------------------------------------------
 bool FpgaSetupSscDma(uint8_t *buf, int len)
 {
-	if (buf == NULL) {
-        return false;
-    }
+	if (buf == NULL) return false;
 
 	AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;	// Disable DMA Transfer
 	AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf;		// transfer to this memory address
@@ -166,75 +166,86 @@ bool FpgaSetupSscDma(uint8_t *buf, int len)
 	AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf;		// next transfer to same memory address
 	AT91C_BASE_PDC_SSC->PDC_RNCR = len;					// ... with same number of bytes
 	AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;		// go!
-    
-    return true;
+
+	return true;
 }
 
 
-static int get_from_fpga_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+//----------------------------------------------------------------------------
+// Uncompress (inflate) the FPGA data. Returns one decompressed byte with
+// each call. 
+//----------------------------------------------------------------------------
+static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
 {
 	if (fpga_image_ptr == compressed_fpga_stream->next_out) {	// need more data
 		compressed_fpga_stream->next_out = output_buffer;
 		compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
 		fpga_image_ptr = output_buffer;
 		int res = inflate(compressed_fpga_stream, Z_SYNC_FLUSH);
-		if (res != Z_OK) {
+		if (res != Z_OK)
 			Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg);
-		}
-		if (res < 0) {
+
+		if (res < 0)
 			return res;
-		}
 	}
 
+	uncompressed_bytes_cnt++;
+	
 	return *fpga_image_ptr++;
 }
 
+//----------------------------------------------------------------------------
+// Undo the interleaving of several FPGA config files. FPGA config files
+// are combined into one big file:
+// 288 bytes from FPGA file 1, followed by 288 bytes from FGPA file 2, etc.
+//----------------------------------------------------------------------------
+static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+{
+	while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % FPGA_BITSTREAM_MAX != (bitstream_version - 1)) {
+		// skip undesired data belonging to other bitstream_versions
+		get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
+	}
+
+	return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
+	
+}
+
 
 static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size)
 {
-	Dbprintf("zlib requested %d bytes", items*size);
 	return BigBuf_malloc(items*size);
 }
 
 
 static void fpga_inflate_free(voidpf opaque, voidpf address)
 {
-	Dbprintf("zlib frees memory");
-	BigBuf_free_keep_EM();
+	BigBuf_free(); BigBuf_Clear_ext(false);
 }
 
 
+//----------------------------------------------------------------------------
+// Initialize decompression of the respective (HF or LF) FPGA stream 
+//----------------------------------------------------------------------------
 static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
 {
 	uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
-	uint8_t *fpga_image_start;
-	uint32_t fpga_image_size;
 	
-	if (bitstream_version == FPGA_BITSTREAM_LF) {
-		fpga_image_start = &_binary_fpga_lf_bit_start;
-		fpga_image_size = (uint32_t)&_binary_fpga_lf_bit_end - (uint32_t)&_binary_fpga_lf_bit_start;
-	} else if (bitstream_version == FPGA_BITSTREAM_HF) {
-		fpga_image_start = &_binary_fpga_hf_bit_start;
-		fpga_image_size = (uint32_t)&_binary_fpga_hf_bit_end - (uint32_t)&_binary_fpga_hf_bit_start;
-	} else {
-		return false;
-	}	
-
+	uncompressed_bytes_cnt = 0;
+	
 	// initialize z_stream structure for inflate:
-	compressed_fpga_stream->next_in = fpga_image_start;
-	compressed_fpga_stream->avail_in = fpga_image_size;
+	compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start;
+	compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_start - &_binary_obj_fpga_all_bit_z_end;
 	compressed_fpga_stream->next_out = output_buffer;
 	compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
 	compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
 	compressed_fpga_stream->zfree = &fpga_inflate_free;
 
-	// initialize inflate with WindowBits=15 and to automatically detect header:
-	inflateInit2(compressed_fpga_stream, 15+32);
+	inflateInit2(compressed_fpga_stream, 0);
 
 	fpga_image_ptr = output_buffer;
 
 	for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
-		header[i] = get_from_fpga_stream(compressed_fpga_stream, output_buffer);
+		header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
 	}
 	
 	// Check for a valid .bit file (starts with _bitparse_fixed_header)
@@ -260,10 +271,10 @@ static void DownloadFPGA_byte(unsigned char w)
 }
 
 // Download the fpga image starting at current stream position with length FpgaImageLen bytes
-static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
 {
 
-	Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen);
+	//Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen);
 	
 	int i=0;
 
@@ -317,7 +328,7 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin
 	}
 
 	for(i = 0; i < FpgaImageLen; i++) {
-		int b = get_from_fpga_stream(compressed_fpga_stream, output_buffer);
+		int b = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
 		if (b < 0) {
 			Dbprintf("Error %d during FpgaDownload", b);
 			break;
@@ -325,8 +336,6 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin
 		DownloadFPGA_byte(b);
 	}
 	
-	Dbprintf("%d bytes loaded into FPGA", i);
-	
 	// continue to clock FPGA until ready signal goes high
 	i=100000;
 	while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) {
@@ -349,13 +358,13 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin
  * (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
  * length.
  */
-static int bitparse_find_section(char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+static int bitparse_find_section(int bitstream_version, char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
 {
 	int result = 0;
 	#define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100  // maximum number of bytes to search for the requested section
 	uint16_t numbytes = 0;
 	while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
-		char current_name = get_from_fpga_stream(compressed_fpga_stream, output_buffer);
+		char current_name = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
 		numbytes++;
 		unsigned int current_length = 0;
 		if(current_name < 'a' || current_name > 'e') {
@@ -366,12 +375,12 @@ static int bitparse_find_section(char section_name, unsigned int *section_length
 		switch(current_name) {
 		case 'e':
 			/* Four byte length field */
-			current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 24;
-			current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 16;
+			current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 24;
+			current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 16;
 			numbytes += 2;
 		default: /* Fall through, two byte length field */
-			current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 8;
-			current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 0;
+			current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 8;
+			current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 0;
 			numbytes += 2;
 		}
 
@@ -388,7 +397,7 @@ static int bitparse_find_section(char section_name, unsigned int *section_length
 		}
 
 		for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
-			get_from_fpga_stream(compressed_fpga_stream, output_buffer);
+			get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
 			numbytes++;
 		}
 	}
@@ -397,50 +406,66 @@ static int bitparse_find_section(char section_name, unsigned int *section_length
 }
 
 
-//-----------------------------------------------------------------------------
-// Find out which FPGA image format is stored in flash, then call DownloadFPGA
-// with the right parameters to download the image
-//-----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+// Check which FPGA image is currently loaded (if any). If necessary 
+// decompress and load the correct (HF or LF) image to the FPGA
+//----------------------------------------------------------------------------
 void FpgaDownloadAndGo(int bitstream_version)
 {
 	z_stream compressed_fpga_stream;
-	uint8_t output_buffer[OUTPUT_BUFFER_LEN];
+	uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
 	
 	// check whether or not the bitstream is already loaded
 	if (downloaded_bitstream == bitstream_version)
 		return;
 
+	// make sure that we have enough memory to decompress
+	BigBuf_free(); BigBuf_Clear_ext(false);	
+	
 	if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
 		return;
 	}
 
 	unsigned int bitstream_length;
-	if(bitparse_find_section('e', &bitstream_length, &compressed_fpga_stream, output_buffer)) {
-		DownloadFPGA(bitstream_length, &compressed_fpga_stream, output_buffer);
+	if(bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) {
+		DownloadFPGA(bitstream_version, bitstream_length, &compressed_fpga_stream, output_buffer);
 		downloaded_bitstream = bitstream_version;
 	}
 
 	inflateEnd(&compressed_fpga_stream);
-		
+	
+	// turn off antenna
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	
+	// free eventually allocated BigBuf memory
+	BigBuf_free(); BigBuf_Clear_ext(false);	
 }	
 
 
+//-----------------------------------------------------------------------------
+// Gather version information from FPGA image. Needs to decompress the begin 
+// of the respective (HF or LF) image.
+// Note: decompression makes use of (i.e. overwrites) BigBuf[]. It is therefore
+// advisable to call this only once and store the results for later use.
+//-----------------------------------------------------------------------------
 void FpgaGatherVersion(int bitstream_version, char *dst, int len)
 {
 	unsigned int fpga_info_len;
-	char tempstr[40];
+	char tempstr[40] = {0x00};
 	z_stream compressed_fpga_stream;
-	uint8_t output_buffer[OUTPUT_BUFFER_LEN];
+	uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
 	
 	dst[0] = '\0';
 
-	if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
+	// ensure that we can allocate enough memory for decompression:
+	BigBuf_free(); BigBuf_Clear_ext(false);
+
+	if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer))
 		return;
-	}
 
-	if(bitparse_find_section('a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
+	if(bitparse_find_section(bitstream_version, 'a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
 		for (uint16_t i = 0; i < fpga_info_len; i++) {
-			char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
+			char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer);
 			if (i < sizeof(tempstr)) {
 				tempstr[i] = c;
 			}
@@ -451,30 +476,30 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len)
 			strncat(dst, "HF ", len-1);
 	}
 	strncat(dst, "FPGA image built", len-1);
-	if(bitparse_find_section('b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
+	if(bitparse_find_section(bitstream_version, 'b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
 		strncat(dst, " for ", len-1);
 		for (uint16_t i = 0; i < fpga_info_len; i++) {
-			char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
+			char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer);
 			if (i < sizeof(tempstr)) {
 				tempstr[i] = c;
 			}
 		}
 		strncat(dst, tempstr, len-1);
 	}
-	if(bitparse_find_section('c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
+	if(bitparse_find_section(bitstream_version, 'c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
 		strncat(dst, " on ", len-1);
 		for (uint16_t i = 0; i < fpga_info_len; i++) {
-			char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
+			char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer);
 			if (i < sizeof(tempstr)) {
 				tempstr[i] = c;
 			}
 		}
 		strncat(dst, tempstr, len-1);
 	}
-	if(bitparse_find_section('d', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
+	if(bitparse_find_section(bitstream_version, 'd', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
 		strncat(dst, " at ", len-1);
 		for (uint16_t i = 0; i < fpga_info_len; i++) {
-			char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
+			char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer);
 			if (i < sizeof(tempstr)) {
 				tempstr[i] = c;
 			}
@@ -482,8 +507,9 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len)
 		strncat(dst, tempstr, len-1);
 	}
 	
-	inflateEnd(&compressed_fpga_stream);
+	strncat(dst, "\n", len-1);
 
+	inflateEnd(&compressed_fpga_stream);
 }
 
 
@@ -534,3 +560,16 @@ void SetAdcMuxFor(uint32_t whichGpio)
 
 	HIGH(whichGpio);
 }
+
+void Fpga_print_status(void) {
+	Dbprintf("Fgpa");
+	switch(downloaded_bitstream) {
+		case FPGA_BITSTREAM_HF: Dbprintf("  mode....................HF"); break;
+		case FPGA_BITSTREAM_LF: Dbprintf("  mode....................LF"); break;
+		default:		Dbprintf("  mode....................%d", downloaded_bitstream); break;
+	}
+}
+
+int FpgaGetCurrent() {
+	return downloaded_bitstream;
+}