//-----------------------------------------------------------------------------
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_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
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)) {
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];
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;
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;
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 ) ) ) {
}
-//-----------------------------------------------------------------------------
-// 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;
}
}
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(bitstream_version, 'a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
for (uint16_t i = 0; i < fpga_info_len; i++) {
strncat(dst, tempstr, len-1);
}
- inflateEnd(&compressed_fpga_stream);
+ strncat(dst, "\n", len-1);
+ inflateEnd(&compressed_fpga_stream);
}
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;
+}
projects / proxmark3-svn / blobdiff