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Fix for USB uart slowness since PR #720 (#787)
[proxmark3-svn] / armsrc / fpgaloader.c
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15c4dc5a 1//-----------------------------------------------------------------------------
bd20f8f4 2// Jonathan Westhues, April 2006
62638f87 3// iZsh <izsh at fail0verflow.com>, 2014
bd20f8f4 4//
5// This code is licensed to you under the terms of the GNU GPL, version 2 or,
6// at your option, any later version. See the LICENSE.txt file for the text of
7// the license.
8//-----------------------------------------------------------------------------
15c4dc5a 9// Routines to load the FPGA image, and then to configure the FPGA's major
10// mode once it is configured.
15c4dc5a 11//-----------------------------------------------------------------------------
add4d470 12
472345da 13#include "fpgaloader.h"
14
add4d470 15#include <stdint.h>
16#include <stddef.h>
17#include <stdbool.h>
472345da 18#include "apps.h"
19#include "fpga.h"
e30c654b 20#include "proxmark3.h"
f7e3ed82 21#include "util.h"
9ab7a6c7 22#include "string.h"
add4d470 23#include "BigBuf.h"
24#include "zlib.h"
25
e6153040 26// remember which version of the bitstream we have already downloaded to the FPGA
472345da 27static int downloaded_bitstream = 0;
e6153040 28
29// this is where the bitstreams are located in memory:
fb228974 30extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end;
31
e6153040 32static uint8_t *fpga_image_ptr = NULL;
fb228974 33static uint32_t uncompressed_bytes_cnt;
e6153040 34
fb228974 35#define OUTPUT_BUFFER_LEN 80
e6153040 36
15c4dc5a 37//-----------------------------------------------------------------------------
38// Set up the Serial Peripheral Interface as master
39// Used to write the FPGA config word
40// May also be used to write to other SPI attached devices like an LCD
41//-----------------------------------------------------------------------------
42void SetupSpi(int mode)
43{
44 // PA10 -> SPI_NCS2 chip select (LCD)
45 // PA11 -> SPI_NCS0 chip select (FPGA)
46 // PA12 -> SPI_MISO Master-In Slave-Out
47 // PA13 -> SPI_MOSI Master-Out Slave-In
48 // PA14 -> SPI_SPCK Serial Clock
49
50 // Disable PIO control of the following pins, allows use by the SPI peripheral
51 AT91C_BASE_PIOA->PIO_PDR =
52 GPIO_NCS0 |
53 GPIO_NCS2 |
54 GPIO_MISO |
55 GPIO_MOSI |
56 GPIO_SPCK;
57
58 AT91C_BASE_PIOA->PIO_ASR =
59 GPIO_NCS0 |
60 GPIO_MISO |
61 GPIO_MOSI |
62 GPIO_SPCK;
63
64 AT91C_BASE_PIOA->PIO_BSR = GPIO_NCS2;
65
66 //enable the SPI Peripheral clock
67 AT91C_BASE_PMC->PMC_PCER = (1<<AT91C_ID_SPI);
68 // Enable SPI
69 AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
70
71 switch (mode) {
72 case SPI_FPGA_MODE:
73 AT91C_BASE_SPI->SPI_MR =
74 ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
75 (14 << 16) | // Peripheral Chip Select (selects FPGA SPI_NCS0 or PA11)
76 ( 0 << 7) | // Local Loopback Disabled
77 ( 1 << 4) | // Mode Fault Detection disabled
78 ( 0 << 2) | // Chip selects connected directly to peripheral
79 ( 0 << 1) | // Fixed Peripheral Select
80 ( 1 << 0); // Master Mode
81 AT91C_BASE_SPI->SPI_CSR[0] =
82 ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
83 ( 1 << 16) | // Delay Before SPCK (1 MCK period)
84 ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
85 ( 8 << 4) | // Bits per Transfer (16 bits)
86 ( 0 << 3) | // Chip Select inactive after transfer
87 ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
88 ( 0 << 0); // Clock Polarity inactive state is logic 0
89 break;
90 case SPI_LCD_MODE:
91 AT91C_BASE_SPI->SPI_MR =
92 ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
93 (11 << 16) | // Peripheral Chip Select (selects LCD SPI_NCS2 or PA10)
94 ( 0 << 7) | // Local Loopback Disabled
95 ( 1 << 4) | // Mode Fault Detection disabled
96 ( 0 << 2) | // Chip selects connected directly to peripheral
97 ( 0 << 1) | // Fixed Peripheral Select
98 ( 1 << 0); // Master Mode
99 AT91C_BASE_SPI->SPI_CSR[2] =
100 ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
101 ( 1 << 16) | // Delay Before SPCK (1 MCK period)
102 ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
103 ( 1 << 4) | // Bits per Transfer (9 bits)
104 ( 0 << 3) | // Chip Select inactive after transfer
105 ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
106 ( 0 << 0); // Clock Polarity inactive state is logic 0
107 break;
108 default: // Disable SPI
109 AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIDIS;
110 break;
111 }
112}
113
114//-----------------------------------------------------------------------------
6a5d4e17 115// Set up the synchronous serial port with the set of options that fits
116// the FPGA mode. Both RX and TX are always enabled.
15c4dc5a 117//-----------------------------------------------------------------------------
6a5d4e17 118void FpgaSetupSsc(uint8_t FPGA_mode)
15c4dc5a 119{
120 // First configure the GPIOs, and get ourselves a clock.
121 AT91C_BASE_PIOA->PIO_ASR =
122 GPIO_SSC_FRAME |
123 GPIO_SSC_DIN |
124 GPIO_SSC_DOUT |
125 GPIO_SSC_CLK;
126 AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
127
128 AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SSC);
129
130 // Now set up the SSC proper, starting from a known state.
131 AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
132
133 // RX clock comes from TX clock, RX starts when TX starts, data changes
134 // on RX clock rising edge, sampled on falling edge
135 AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1);
136
6a5d4e17 137 // 8, 16 or 32 bits per transfer, no loopback, MSB first, 1 transfer per sync
d714d3ef 138 // pulse, no output sync
6a5d4e17 139 if ((FPGA_mode & 0xe0) == FPGA_MAJOR_MODE_HF_READER_RX_XCORR) {
140 AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
141 } else {
142 AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
143 }
15c4dc5a 144
6a5d4e17 145 // TX clock comes from TK pin, no clock output, outputs change on falling
d714d3ef 146 // edge of TK, sample on rising edge of TK, start on positive-going edge of sync
902cb3c0 147 AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
15c4dc5a 148
149 // tx framing is the same as the rx framing
150 AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR;
151
152 AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN;
153}
154
155//-----------------------------------------------------------------------------
156// Set up DMA to receive samples from the FPGA. We will use the PDC, with
157// a single buffer as a circular buffer (so that we just chain back to
158// ourselves, not to another buffer). The stuff to manipulate those buffers
159// is in apps.h, because it should be inlined, for speed.
160//-----------------------------------------------------------------------------
6a5d4e17 161bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count)
15c4dc5a 162{
e702439e 163 if (buf == NULL) return false;
d19929cb 164
6a5d4e17 165 AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer
166 AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address
167 AT91C_BASE_PDC_SSC->PDC_RCR = sample_count; // transfer this many samples
168 AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address
169 AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count; // ... with same number of samples AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
c13afca1 170 AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
e702439e 171 return true;
15c4dc5a 172}
173
e6153040 174
8e074056 175//----------------------------------------------------------------------------
176// Uncompress (inflate) the FPGA data. Returns one decompressed byte with
177// each call.
178//----------------------------------------------------------------------------
fb228974 179static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
e6153040 180{
add4d470 181 if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data
182 compressed_fpga_stream->next_out = output_buffer;
183 compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
184 fpga_image_ptr = output_buffer;
185 int res = inflate(compressed_fpga_stream, Z_SYNC_FLUSH);
e702439e 186 if (res != Z_OK)
add4d470 187 Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg);
e702439e
I
188
189 if (res < 0)
25056d8b 190 return res;
add4d470 191 }
192
fb228974 193 uncompressed_bytes_cnt++;
194
add4d470 195 return *fpga_image_ptr++;
e6153040 196}
197
8e074056 198//----------------------------------------------------------------------------
199// Undo the interleaving of several FPGA config files. FPGA config files
200// are combined into one big file:
201// 288 bytes from FPGA file 1, followed by 288 bytes from FGPA file 2, etc.
202//----------------------------------------------------------------------------
fb228974 203static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
204{
472345da 205 while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % fpga_bitstream_num != (bitstream_version - 1)) {
fb228974 206 // skip undesired data belonging to other bitstream_versions
207 get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
208 }
209
210 return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
211
212}
213
214
add4d470 215static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size)
e6153040 216{
add4d470 217 return BigBuf_malloc(items*size);
218}
219
220
221static void fpga_inflate_free(voidpf opaque, voidpf address)
222{
e702439e 223 BigBuf_free(); BigBuf_Clear_ext(false);
add4d470 224}
225
226
8e074056 227//----------------------------------------------------------------------------
228// Initialize decompression of the respective (HF or LF) FPGA stream
229//----------------------------------------------------------------------------
25056d8b 230static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
add4d470 231{
232 uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
add4d470 233
fb228974 234 uncompressed_bytes_cnt = 0;
235
25056d8b 236 // initialize z_stream structure for inflate:
fb228974 237 compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start;
472345da 238 compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_end - &_binary_obj_fpga_all_bit_z_start;
25056d8b 239 compressed_fpga_stream->next_out = output_buffer;
240 compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
241 compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
242 compressed_fpga_stream->zfree = &fpga_inflate_free;
243
8e074056 244 inflateInit2(compressed_fpga_stream, 0);
25056d8b 245
246 fpga_image_ptr = output_buffer;
add4d470 247
248 for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
fb228974 249 header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
add4d470 250 }
251
472345da 252 // Check for a valid .bit file (starts with bitparse_fixed_header)
253 if(memcmp(bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
add4d470 254 return true;
255 } else {
256 return false;
257 }
e6153040 258}
259
260
15c4dc5a 261static void DownloadFPGA_byte(unsigned char w)
262{
263#define SEND_BIT(x) { if(w & (1<<x) ) HIGH(GPIO_FPGA_DIN); else LOW(GPIO_FPGA_DIN); HIGH(GPIO_FPGA_CCLK); LOW(GPIO_FPGA_CCLK); }
264 SEND_BIT(7);
265 SEND_BIT(6);
266 SEND_BIT(5);
267 SEND_BIT(4);
268 SEND_BIT(3);
269 SEND_BIT(2);
270 SEND_BIT(1);
271 SEND_BIT(0);
272}
273
e6153040 274// Download the fpga image starting at current stream position with length FpgaImageLen bytes
fb228974 275static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
15c4dc5a 276{
add4d470 277
e702439e 278 //Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen);
25056d8b 279
15c4dc5a 280 int i=0;
281
282 AT91C_BASE_PIOA->PIO_OER = GPIO_FPGA_ON;
283 AT91C_BASE_PIOA->PIO_PER = GPIO_FPGA_ON;
284 HIGH(GPIO_FPGA_ON); // ensure everything is powered on
285
286 SpinDelay(50);
287
288 LED_D_ON();
289
290 // These pins are inputs
291 AT91C_BASE_PIOA->PIO_ODR =
292 GPIO_FPGA_NINIT |
293 GPIO_FPGA_DONE;
294 // PIO controls the following pins
295 AT91C_BASE_PIOA->PIO_PER =
296 GPIO_FPGA_NINIT |
297 GPIO_FPGA_DONE;
298 // Enable pull-ups
299 AT91C_BASE_PIOA->PIO_PPUER =
300 GPIO_FPGA_NINIT |
301 GPIO_FPGA_DONE;
302
303 // setup initial logic state
304 HIGH(GPIO_FPGA_NPROGRAM);
305 LOW(GPIO_FPGA_CCLK);
306 LOW(GPIO_FPGA_DIN);
307 // These pins are outputs
308 AT91C_BASE_PIOA->PIO_OER =
309 GPIO_FPGA_NPROGRAM |
310 GPIO_FPGA_CCLK |
311 GPIO_FPGA_DIN;
312
313 // enter FPGA configuration mode
314 LOW(GPIO_FPGA_NPROGRAM);
315 SpinDelay(50);
316 HIGH(GPIO_FPGA_NPROGRAM);
317
318 i=100000;
319 // wait for FPGA ready to accept data signal
320 while ((i) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_NINIT ) ) ) {
321 i--;
322 }
323
324 // crude error indicator, leave both red LEDs on and return
325 if (i==0){
326 LED_C_ON();
327 LED_D_ON();
328 return;
329 }
330
25056d8b 331 for(i = 0; i < FpgaImageLen; i++) {
fb228974 332 int b = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
25056d8b 333 if (b < 0) {
334 Dbprintf("Error %d during FpgaDownload", b);
335 break;
336 }
337 DownloadFPGA_byte(b);
15c4dc5a 338 }
25056d8b 339
15c4dc5a 340 // continue to clock FPGA until ready signal goes high
341 i=100000;
342 while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) {
343 HIGH(GPIO_FPGA_CCLK);
344 LOW(GPIO_FPGA_CCLK);
345 }
346 // crude error indicator, leave both red LEDs on and return
347 if (i==0){
348 LED_C_ON();
349 LED_D_ON();
350 return;
351 }
352 LED_D_OFF();
353}
354
e6153040 355
15c4dc5a 356/* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence
357 * 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01
358 * After that the format is 1 byte section type (ASCII character), 2 byte length
359 * (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
360 * length.
361 */
fb228974 362static int bitparse_find_section(int bitstream_version, char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
15c4dc5a 363{
15c4dc5a 364 int result = 0;
e6153040 365 #define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section
366 uint16_t numbytes = 0;
367 while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
fb228974 368 char current_name = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
e6153040 369 numbytes++;
15c4dc5a 370 unsigned int current_length = 0;
371 if(current_name < 'a' || current_name > 'e') {
372 /* Strange section name, abort */
373 break;
374 }
375 current_length = 0;
376 switch(current_name) {
377 case 'e':
378 /* Four byte length field */
fb228974 379 current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 24;
380 current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 16;
e6153040 381 numbytes += 2;
15c4dc5a 382 default: /* Fall through, two byte length field */
fb228974 383 current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 8;
384 current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 0;
e6153040 385 numbytes += 2;
15c4dc5a 386 }
e30c654b 387
15c4dc5a 388 if(current_name != 'e' && current_length > 255) {
389 /* Maybe a parse error */
390 break;
391 }
e30c654b 392
15c4dc5a 393 if(current_name == section_name) {
394 /* Found it */
15c4dc5a 395 *section_length = current_length;
396 result = 1;
397 break;
398 }
e30c654b 399
e6153040 400 for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
fb228974 401 get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
e6153040 402 numbytes++;
403 }
15c4dc5a 404 }
e30c654b 405
15c4dc5a 406 return result;
407}
408
e6153040 409
8e074056 410//----------------------------------------------------------------------------
411// Check which FPGA image is currently loaded (if any). If necessary
412// decompress and load the correct (HF or LF) image to the FPGA
413//----------------------------------------------------------------------------
7cc204bf 414void FpgaDownloadAndGo(int bitstream_version)
15c4dc5a 415{
add4d470 416 z_stream compressed_fpga_stream;
e702439e 417 uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
e6153040 418
7cc204bf 419 // check whether or not the bitstream is already loaded
e6153040 420 if (downloaded_bitstream == bitstream_version)
7cc204bf 421 return;
422
8e074056 423 // make sure that we have enough memory to decompress
e702439e 424 BigBuf_free(); BigBuf_Clear_ext(false);
8e074056 425
add4d470 426 if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
7cc204bf 427 return;
e6153040 428 }
25056d8b 429
add4d470 430 unsigned int bitstream_length;
472345da 431 if (bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) {
fb228974 432 DownloadFPGA(bitstream_version, bitstream_length, &compressed_fpga_stream, output_buffer);
add4d470 433 downloaded_bitstream = bitstream_version;
15c4dc5a 434 }
25056d8b 435
436 inflateEnd(&compressed_fpga_stream);
e702439e 437
dc930207
I
438 // turn off antenna
439 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
440
e702439e
I
441 // free eventually allocated BigBuf memory
442 BigBuf_free(); BigBuf_Clear_ext(false);
e6153040 443}
15c4dc5a 444
7cc204bf 445
15c4dc5a 446//-----------------------------------------------------------------------------
447// Send a 16 bit command/data pair to the FPGA.
448// The bit format is: C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
449// where C is the 4 bit command and D is the 12 bit data
450//-----------------------------------------------------------------------------
f7e3ed82 451void FpgaSendCommand(uint16_t cmd, uint16_t v)
15c4dc5a 452{
453 SetupSpi(SPI_FPGA_MODE);
454 while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete
455 AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // send the data
456}
457//-----------------------------------------------------------------------------
458// Write the FPGA setup word (that determines what mode the logic is in, read
459// vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to
460// avoid changing this function's occurence everywhere in the source code.
461//-----------------------------------------------------------------------------
f7e3ed82 462void FpgaWriteConfWord(uint8_t v)
15c4dc5a 463{
464 FpgaSendCommand(FPGA_CMD_SET_CONFREG, v);
465}
466
467//-----------------------------------------------------------------------------
468// Set up the CMOS switches that mux the ADC: four switches, independently
469// closable, but should only close one at a time. Not an FPGA thing, but
470// the samples from the ADC always flow through the FPGA.
471//-----------------------------------------------------------------------------
f7e3ed82 472void SetAdcMuxFor(uint32_t whichGpio)
15c4dc5a 473{
474 AT91C_BASE_PIOA->PIO_OER =
475 GPIO_MUXSEL_HIPKD |
476 GPIO_MUXSEL_LOPKD |
477 GPIO_MUXSEL_LORAW |
478 GPIO_MUXSEL_HIRAW;
479
480 AT91C_BASE_PIOA->PIO_PER =
481 GPIO_MUXSEL_HIPKD |
482 GPIO_MUXSEL_LOPKD |
483 GPIO_MUXSEL_LORAW |
484 GPIO_MUXSEL_HIRAW;
485
486 LOW(GPIO_MUXSEL_HIPKD);
487 LOW(GPIO_MUXSEL_HIRAW);
488 LOW(GPIO_MUXSEL_LORAW);
489 LOW(GPIO_MUXSEL_LOPKD);
490
491 HIGH(whichGpio);
492}
e2012d1b 493
e702439e 494void Fpga_print_status(void) {
472345da 495 Dbprintf("Currently loaded FPGA image:");
496 Dbprintf(" %s", fpga_version_information[downloaded_bitstream-1]);
e2012d1b 497}
fdcfbdcc
RAB
498
499int FpgaGetCurrent() {
500 return downloaded_bitstream;
501}
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