add lf PAC/Stanley tag read (#354)

[proxmark3-svn] / armsrc / fpgaloader.c

diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c
index a2c9d1e4b2064a631f2a61c035310904d4038439..1deb5b7dd09c1c19f0c103c580a15623b5c67a4e 100644 (file)
--- a/armsrc/fpgaloader.c
+++ b/armsrc/fpgaloader.c
@@ -158,9 +158,7 @@ void FpgaSetupSsc(void)
 //-----------------------------------------------------------------------------
 bool FpgaSetupSscDma(uint8_t *buf, int len)
 {
 //-----------------------------------------------------------------------------
 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
 
        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


@@ -168,11 +166,15 @@ 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!
        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;

 }
 
 
 }
 
 

+//----------------------------------------------------------------------------
+// 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
 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


@@ -180,12 +182,11 @@ static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8
                compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
                fpga_image_ptr = output_buffer;
                int res = inflate(compressed_fpga_stream, Z_SYNC_FLUSH);
                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);
                        Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg);

-               }
-               if (res < 0) {
+
+               if (res < 0)

                        return res;
                        return res;

-               }

        }
 
        uncompressed_bytes_cnt++;
        }
 
        uncompressed_bytes_cnt++;


@@ -193,7 +194,11 @@ static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8
        return *fpga_image_ptr++;
 }
 
        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)) {
 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)) {


@@ -208,18 +213,19 @@ static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga
 
 static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size)
 {
 
 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)
 {
        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];
 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];


@@ -234,7 +240,7 @@ static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_s
        compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
        compressed_fpga_stream->zfree = &fpga_inflate_free;
 
        compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
        compressed_fpga_stream->zfree = &fpga_inflate_free;
 

-       inflateInit2(compressed_fpga_stream, 15);
+       inflateInit2(compressed_fpga_stream, 0);

 
        fpga_image_ptr = output_buffer;
 
 
        fpga_image_ptr = output_buffer;
 


@@ -268,7 +274,7 @@ static void DownloadFPGA_byte(unsigned char w)
 static void DownloadFPGA(int bitstream_version, 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;
 
        
        int i=0;
 


@@ -330,8 +336,6 @@ static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp comp
                DownloadFPGA_byte(b);
        }
        
                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 ) ) ) {
        // continue to clock FPGA until ready signal goes high
        i=100000;
        while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) {


@@ -402,19 +406,22 @@ static int bitparse_find_section(int bitstream_version, char section_name, unsig
 }
 
 
 }
 
 

-//-----------------------------------------------------------------------------
-// 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;
 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;
 
        
        // 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;
        }
        if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
                return;
        }


@@ -426,22 +433,32 @@ void FpgaDownloadAndGo(int bitstream_version)
        }
 
        inflateEnd(&compressed_fpga_stream);
        }
 
        inflateEnd(&compressed_fpga_stream);

-               
+       
+       // 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;
 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;
        z_stream compressed_fpga_stream;

-       uint8_t output_buffer[OUTPUT_BUFFER_LEN];
+       uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};

        
        dst[0] = '\0';
 
        
        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;
                return;

-       }

 
        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++) {
 
        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++) {


@@ -487,8 +504,9 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len)
                strncat(dst, tempstr, len-1);
        }
        
                strncat(dst, tempstr, len-1);
        }
        

-       inflateEnd(&compressed_fpga_stream);
+       strncat(dst, "\n", len-1);

 
 

+       inflateEnd(&compressed_fpga_stream);

 }
 
 
 }
 
 


@@ -539,3 +557,16 @@ void SetAdcMuxFor(uint32_t whichGpio)
 
        HIGH(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;
+}