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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 | //----------------------------------------------------------------------------- |
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9 | // Routines to load the FPGA image, and then to configure the FPGA's major |
10 | // mode once it is configured. |
15c4dc5a |
11 | //----------------------------------------------------------------------------- |
f38a1528 |
12 | |
9783989b |
13 | #include <stdint.h> |
14 | #include <stddef.h> |
15 | #include <stdbool.h> |
16 | #include "fpgaloader.h" |
17 | #include "proxmark3.h" |
f7e3ed82 |
18 | #include "util.h" |
9ab7a6c7 |
19 | #include "string.h" |
9783989b |
20 | #include "BigBuf.h" |
21 | #include "zlib.h" |
22 | |
23 | extern void Dbprintf(const char *fmt, ...); |
24 | |
25 | // remember which version of the bitstream we have already downloaded to the FPGA |
26 | static int downloaded_bitstream = FPGA_BITSTREAM_ERR; |
27 | |
28 | // this is where the bitstreams are located in memory: |
29 | extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end; |
30 | |
31 | static uint8_t *fpga_image_ptr = NULL; |
32 | static uint32_t uncompressed_bytes_cnt; |
33 | |
34 | static const uint8_t _bitparse_fixed_header[] = {0x00, 0x09, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x00, 0x00, 0x01}; |
35 | #define FPGA_BITSTREAM_FIXED_HEADER_SIZE sizeof(_bitparse_fixed_header) |
36 | #define OUTPUT_BUFFER_LEN 80 |
37 | #define FPGA_INTERLEAVE_SIZE 288 |
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38 | |
39 | //----------------------------------------------------------------------------- |
40 | // Set up the Serial Peripheral Interface as master |
41 | // Used to write the FPGA config word |
42 | // May also be used to write to other SPI attached devices like an LCD |
43 | //----------------------------------------------------------------------------- |
44 | void SetupSpi(int mode) |
45 | { |
46 | // PA10 -> SPI_NCS2 chip select (LCD) |
47 | // PA11 -> SPI_NCS0 chip select (FPGA) |
48 | // PA12 -> SPI_MISO Master-In Slave-Out |
49 | // PA13 -> SPI_MOSI Master-Out Slave-In |
50 | // PA14 -> SPI_SPCK Serial Clock |
51 | |
52 | // Disable PIO control of the following pins, allows use by the SPI peripheral |
53 | AT91C_BASE_PIOA->PIO_PDR = |
54 | GPIO_NCS0 | |
55 | GPIO_NCS2 | |
56 | GPIO_MISO | |
57 | GPIO_MOSI | |
58 | GPIO_SPCK; |
59 | |
60 | AT91C_BASE_PIOA->PIO_ASR = |
61 | GPIO_NCS0 | |
62 | GPIO_MISO | |
63 | GPIO_MOSI | |
64 | GPIO_SPCK; |
65 | |
66 | AT91C_BASE_PIOA->PIO_BSR = GPIO_NCS2; |
67 | |
68 | //enable the SPI Peripheral clock |
69 | AT91C_BASE_PMC->PMC_PCER = (1<<AT91C_ID_SPI); |
70 | // Enable SPI |
71 | AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN; |
72 | |
73 | switch (mode) { |
74 | case SPI_FPGA_MODE: |
75 | AT91C_BASE_SPI->SPI_MR = |
76 | ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods) |
77 | (14 << 16) | // Peripheral Chip Select (selects FPGA SPI_NCS0 or PA11) |
78 | ( 0 << 7) | // Local Loopback Disabled |
79 | ( 1 << 4) | // Mode Fault Detection disabled |
80 | ( 0 << 2) | // Chip selects connected directly to peripheral |
81 | ( 0 << 1) | // Fixed Peripheral Select |
82 | ( 1 << 0); // Master Mode |
83 | AT91C_BASE_SPI->SPI_CSR[0] = |
84 | ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods) |
85 | ( 1 << 16) | // Delay Before SPCK (1 MCK period) |
86 | ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud |
87 | ( 8 << 4) | // Bits per Transfer (16 bits) |
88 | ( 0 << 3) | // Chip Select inactive after transfer |
89 | ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge |
90 | ( 0 << 0); // Clock Polarity inactive state is logic 0 |
91 | break; |
92 | case SPI_LCD_MODE: |
93 | AT91C_BASE_SPI->SPI_MR = |
94 | ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods) |
95 | (11 << 16) | // Peripheral Chip Select (selects LCD SPI_NCS2 or PA10) |
96 | ( 0 << 7) | // Local Loopback Disabled |
97 | ( 1 << 4) | // Mode Fault Detection disabled |
98 | ( 0 << 2) | // Chip selects connected directly to peripheral |
99 | ( 0 << 1) | // Fixed Peripheral Select |
100 | ( 1 << 0); // Master Mode |
101 | AT91C_BASE_SPI->SPI_CSR[2] = |
102 | ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods) |
103 | ( 1 << 16) | // Delay Before SPCK (1 MCK period) |
104 | ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud |
105 | ( 1 << 4) | // Bits per Transfer (9 bits) |
106 | ( 0 << 3) | // Chip Select inactive after transfer |
107 | ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge |
108 | ( 0 << 0); // Clock Polarity inactive state is logic 0 |
109 | break; |
110 | default: // Disable SPI |
111 | AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIDIS; |
112 | break; |
113 | } |
114 | } |
115 | |
116 | //----------------------------------------------------------------------------- |
117 | // Set up the synchronous serial port, with the one set of options that we |
118 | // always use when we are talking to the FPGA. Both RX and TX are enabled. |
119 | //----------------------------------------------------------------------------- |
120 | void FpgaSetupSsc(void) |
121 | { |
122 | // First configure the GPIOs, and get ourselves a clock. |
123 | AT91C_BASE_PIOA->PIO_ASR = |
124 | GPIO_SSC_FRAME | |
125 | GPIO_SSC_DIN | |
126 | GPIO_SSC_DOUT | |
127 | GPIO_SSC_CLK; |
128 | AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT; |
129 | |
130 | AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SSC); |
131 | |
132 | // Now set up the SSC proper, starting from a known state. |
133 | AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; |
134 | |
135 | // RX clock comes from TX clock, RX starts when TX starts, data changes |
136 | // on RX clock rising edge, sampled on falling edge |
137 | AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1); |
138 | |
139 | // 8 bits per transfer, no loopback, MSB first, 1 transfer per sync |
d714d3ef |
140 | // pulse, no output sync |
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141 | AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); |
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142 | |
143 | // clock comes from TK pin, no clock output, outputs change on falling |
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144 | // edge of TK, sample on rising edge of TK, start on positive-going edge of sync |
902cb3c0 |
145 | AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5); |
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146 | |
147 | // tx framing is the same as the rx framing |
148 | AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR; |
149 | |
150 | AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN; |
151 | } |
152 | |
153 | //----------------------------------------------------------------------------- |
154 | // Set up DMA to receive samples from the FPGA. We will use the PDC, with |
155 | // a single buffer as a circular buffer (so that we just chain back to |
156 | // ourselves, not to another buffer). The stuff to manipulate those buffers |
157 | // is in apps.h, because it should be inlined, for speed. |
158 | //----------------------------------------------------------------------------- |
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159 | bool FpgaSetupSscDma(uint8_t *buf, int len) |
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160 | { |
d19929cb |
161 | if (buf == NULL) { |
162 | return false; |
163 | } |
164 | |
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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 = len; // transfer this many bytes |
168 | AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address |
169 | AT91C_BASE_PDC_SSC->PDC_RNCR = len; // ... with same number of bytes |
170 | AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go! |
d19929cb |
171 | |
172 | return true; |
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173 | } |
174 | |
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175 | |
176 | //---------------------------------------------------------------------------- |
177 | // Uncompress (inflate) the FPGA data. Returns one decompressed byte with |
178 | // each call. |
179 | //---------------------------------------------------------------------------- |
180 | static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer) |
181 | { |
182 | if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data |
183 | compressed_fpga_stream->next_out = output_buffer; |
184 | compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN; |
185 | fpga_image_ptr = output_buffer; |
186 | int res = inflate(compressed_fpga_stream, Z_SYNC_FLUSH); |
187 | if (res != Z_OK) { |
188 | Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg); |
189 | } |
190 | if (res < 0) { |
191 | return res; |
192 | } |
193 | } |
194 | |
195 | uncompressed_bytes_cnt++; |
196 | |
197 | return *fpga_image_ptr++; |
198 | } |
199 | |
200 | //---------------------------------------------------------------------------- |
201 | // Undo the interleaving of several FPGA config files. FPGA config files |
202 | // are combined into one big file: |
203 | // 288 bytes from FPGA file 1, followed by 288 bytes from FGPA file 2, etc. |
204 | //---------------------------------------------------------------------------- |
205 | static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer) |
206 | { |
207 | while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % FPGA_BITSTREAM_MAX != (bitstream_version - 1)) { |
208 | // skip undesired data belonging to other bitstream_versions |
209 | get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer); |
210 | } |
211 | |
212 | return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer); |
213 | |
214 | } |
215 | |
216 | |
217 | static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size) |
218 | { |
219 | return BigBuf_malloc(items*size); |
220 | } |
221 | |
222 | |
223 | static void fpga_inflate_free(voidpf opaque, voidpf address) |
224 | { |
225 | BigBuf_free(); |
226 | } |
227 | |
228 | |
229 | //---------------------------------------------------------------------------- |
230 | // Initialize decompression of the respective (HF or LF) FPGA stream |
231 | //---------------------------------------------------------------------------- |
232 | static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer) |
233 | { |
234 | uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE]; |
235 | |
236 | uncompressed_bytes_cnt = 0; |
237 | |
238 | // initialize z_stream structure for inflate: |
239 | compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start; |
240 | compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_start - &_binary_obj_fpga_all_bit_z_end; |
241 | compressed_fpga_stream->next_out = output_buffer; |
242 | compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN; |
243 | compressed_fpga_stream->zalloc = &fpga_inflate_malloc; |
244 | compressed_fpga_stream->zfree = &fpga_inflate_free; |
245 | |
246 | inflateInit2(compressed_fpga_stream, 0); |
247 | |
248 | fpga_image_ptr = output_buffer; |
249 | |
250 | for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) { |
251 | header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); |
252 | } |
253 | |
254 | // Check for a valid .bit file (starts with _bitparse_fixed_header) |
255 | if(memcmp(_bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) { |
256 | return true; |
257 | } else { |
258 | return false; |
259 | } |
260 | } |
261 | |
262 | |
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263 | static void DownloadFPGA_byte(unsigned char w) |
264 | { |
265 | #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); } |
266 | SEND_BIT(7); |
267 | SEND_BIT(6); |
268 | SEND_BIT(5); |
269 | SEND_BIT(4); |
270 | SEND_BIT(3); |
271 | SEND_BIT(2); |
272 | SEND_BIT(1); |
273 | SEND_BIT(0); |
274 | } |
275 | |
9783989b |
276 | // Download the fpga image starting at current stream position with length FpgaImageLen bytes |
277 | static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer) |
15c4dc5a |
278 | { |
279 | int i=0; |
280 | |
281 | AT91C_BASE_PIOA->PIO_OER = GPIO_FPGA_ON; |
282 | AT91C_BASE_PIOA->PIO_PER = GPIO_FPGA_ON; |
283 | HIGH(GPIO_FPGA_ON); // ensure everything is powered on |
284 | |
285 | SpinDelay(50); |
286 | |
287 | LED_D_ON(); |
288 | |
289 | // These pins are inputs |
290 | AT91C_BASE_PIOA->PIO_ODR = |
291 | GPIO_FPGA_NINIT | |
292 | GPIO_FPGA_DONE; |
293 | // PIO controls the following pins |
294 | AT91C_BASE_PIOA->PIO_PER = |
295 | GPIO_FPGA_NINIT | |
296 | GPIO_FPGA_DONE; |
297 | // Enable pull-ups |
298 | AT91C_BASE_PIOA->PIO_PPUER = |
299 | GPIO_FPGA_NINIT | |
300 | GPIO_FPGA_DONE; |
301 | |
302 | // setup initial logic state |
303 | HIGH(GPIO_FPGA_NPROGRAM); |
304 | LOW(GPIO_FPGA_CCLK); |
305 | LOW(GPIO_FPGA_DIN); |
306 | // These pins are outputs |
307 | AT91C_BASE_PIOA->PIO_OER = |
308 | GPIO_FPGA_NPROGRAM | |
309 | GPIO_FPGA_CCLK | |
310 | GPIO_FPGA_DIN; |
311 | |
312 | // enter FPGA configuration mode |
313 | LOW(GPIO_FPGA_NPROGRAM); |
314 | SpinDelay(50); |
315 | HIGH(GPIO_FPGA_NPROGRAM); |
316 | |
317 | i=100000; |
318 | // wait for FPGA ready to accept data signal |
319 | while ((i) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_NINIT ) ) ) { |
320 | i--; |
321 | } |
322 | |
323 | // crude error indicator, leave both red LEDs on and return |
324 | if (i==0){ |
325 | LED_C_ON(); |
326 | LED_D_ON(); |
327 | return; |
328 | } |
329 | |
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330 | for(i = 0; i < FpgaImageLen; i++) { |
331 | int b = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); |
332 | if (b < 0) { |
333 | Dbprintf("Error %d during FpgaDownload", b); |
334 | break; |
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335 | } |
9783989b |
336 | DownloadFPGA_byte(b); |
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337 | } |
9783989b |
338 | |
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339 | // continue to clock FPGA until ready signal goes high |
340 | i=100000; |
341 | while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) { |
342 | HIGH(GPIO_FPGA_CCLK); |
343 | LOW(GPIO_FPGA_CCLK); |
344 | } |
345 | // crude error indicator, leave both red LEDs on and return |
346 | if (i==0){ |
347 | LED_C_ON(); |
348 | LED_D_ON(); |
349 | return; |
350 | } |
351 | LED_D_OFF(); |
352 | } |
353 | |
9783989b |
354 | |
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355 | /* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence |
356 | * 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01 |
357 | * After that the format is 1 byte section type (ASCII character), 2 byte length |
358 | * (big endian), <length> bytes content. Except for section 'e' which has 4 bytes |
359 | * length. |
360 | */ |
9783989b |
361 | static int bitparse_find_section(int bitstream_version, char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer) |
15c4dc5a |
362 | { |
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363 | int result = 0; |
9783989b |
364 | #define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section |
365 | uint16_t numbytes = 0; |
366 | while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) { |
367 | char current_name = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); |
368 | numbytes++; |
15c4dc5a |
369 | unsigned int current_length = 0; |
370 | if(current_name < 'a' || current_name > 'e') { |
371 | /* Strange section name, abort */ |
372 | break; |
373 | } |
374 | current_length = 0; |
375 | switch(current_name) { |
376 | case 'e': |
377 | /* Four byte length field */ |
9783989b |
378 | current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 24; |
379 | current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 16; |
380 | numbytes += 2; |
15c4dc5a |
381 | default: /* Fall through, two byte length field */ |
9783989b |
382 | current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 8; |
383 | current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 0; |
384 | numbytes += 2; |
15c4dc5a |
385 | } |
e30c654b |
386 | |
15c4dc5a |
387 | if(current_name != 'e' && current_length > 255) { |
388 | /* Maybe a parse error */ |
389 | break; |
390 | } |
e30c654b |
391 | |
15c4dc5a |
392 | if(current_name == section_name) { |
393 | /* Found it */ |
15c4dc5a |
394 | *section_length = current_length; |
395 | result = 1; |
396 | break; |
397 | } |
e30c654b |
398 | |
9783989b |
399 | for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) { |
400 | get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); |
401 | numbytes++; |
402 | } |
15c4dc5a |
403 | } |
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404 | |
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405 | return result; |
406 | } |
407 | |
9783989b |
408 | |
409 | //---------------------------------------------------------------------------- |
410 | // Check which FPGA image is currently loaded (if any). If necessary |
411 | // decompress and load the correct (HF or LF) image to the FPGA |
412 | //---------------------------------------------------------------------------- |
7cc204bf |
413 | void FpgaDownloadAndGo(int bitstream_version) |
15c4dc5a |
414 | { |
9783989b |
415 | z_stream compressed_fpga_stream; |
416 | uint8_t output_buffer[OUTPUT_BUFFER_LEN]; |
417 | |
7cc204bf |
418 | // check whether or not the bitstream is already loaded |
9783989b |
419 | if (downloaded_bitstream == bitstream_version) |
7cc204bf |
420 | return; |
421 | |
9783989b |
422 | // make sure that we have enough memory to decompress |
423 | BigBuf_free(); |
424 | |
425 | if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) { |
7cc204bf |
426 | return; |
15c4dc5a |
427 | } |
e30c654b |
428 | |
9783989b |
429 | unsigned int bitstream_length; |
430 | if(bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) { |
431 | DownloadFPGA(bitstream_version, bitstream_length, &compressed_fpga_stream, output_buffer); |
432 | downloaded_bitstream = bitstream_version; |
433 | } |
15c4dc5a |
434 | |
9783989b |
435 | inflateEnd(&compressed_fpga_stream); |
99cf19d9 |
436 | |
437 | BigBuf_free(); |
9783989b |
438 | } |
7cc204bf |
439 | |
9783989b |
440 | |
441 | //----------------------------------------------------------------------------- |
442 | // Gather version information from FPGA image. Needs to decompress the begin |
443 | // of the respective (HF or LF) image. |
444 | // Note: decompression makes use of (i.e. overwrites) BigBuf[]. It is therefore |
445 | // advisable to call this only once and store the results for later use. |
446 | //----------------------------------------------------------------------------- |
447 | void FpgaGatherVersion(int bitstream_version, char *dst, int len) |
15c4dc5a |
448 | { |
15c4dc5a |
449 | unsigned int fpga_info_len; |
9783989b |
450 | char tempstr[40]; |
451 | z_stream compressed_fpga_stream; |
452 | uint8_t output_buffer[OUTPUT_BUFFER_LEN]; |
453 | |
454 | dst[0] = '\0'; |
455 | |
456 | // ensure that we can allocate enough memory for decompression: |
457 | BigBuf_free(); |
458 | |
459 | if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) { |
460 | return; |
461 | } |
462 | |
463 | if(bitparse_find_section(bitstream_version, 'a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { |
464 | for (uint16_t i = 0; i < fpga_info_len; i++) { |
465 | char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); |
466 | if (i < sizeof(tempstr)) { |
467 | tempstr[i] = c; |
468 | } |
15c4dc5a |
469 | } |
9783989b |
470 | if (!memcmp("fpga_lf", tempstr, 7)) |
471 | strncat(dst, "LF ", len-1); |
472 | else if (!memcmp("fpga_hf", tempstr, 7)) |
473 | strncat(dst, "HF ", len-1); |
474 | } |
475 | strncat(dst, "FPGA image built", len-1); |
476 | if(bitparse_find_section(bitstream_version, 'b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { |
477 | strncat(dst, " for ", len-1); |
478 | for (uint16_t i = 0; i < fpga_info_len; i++) { |
479 | char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); |
480 | if (i < sizeof(tempstr)) { |
481 | tempstr[i] = c; |
482 | } |
15c4dc5a |
483 | } |
9783989b |
484 | strncat(dst, tempstr, len-1); |
485 | } |
486 | if(bitparse_find_section(bitstream_version, 'c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { |
487 | strncat(dst, " on ", len-1); |
488 | for (uint16_t i = 0; i < fpga_info_len; i++) { |
489 | char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); |
490 | if (i < sizeof(tempstr)) { |
491 | tempstr[i] = c; |
492 | } |
15c4dc5a |
493 | } |
9783989b |
494 | strncat(dst, tempstr, len-1); |
495 | } |
496 | if(bitparse_find_section(bitstream_version, 'd', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { |
497 | strncat(dst, " at ", len-1); |
498 | for (uint16_t i = 0; i < fpga_info_len; i++) { |
499 | char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); |
500 | if (i < sizeof(tempstr)) { |
501 | tempstr[i] = c; |
502 | } |
15c4dc5a |
503 | } |
9783989b |
504 | strncat(dst, tempstr, len-1); |
15c4dc5a |
505 | } |
9783989b |
506 | |
507 | strncat(dst, "\n", len-1); |
508 | |
509 | inflateEnd(&compressed_fpga_stream); |
15c4dc5a |
510 | } |
511 | |
9783989b |
512 | |
15c4dc5a |
513 | //----------------------------------------------------------------------------- |
514 | // Send a 16 bit command/data pair to the FPGA. |
515 | // The bit format is: C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 |
516 | // where C is the 4 bit command and D is the 12 bit data |
517 | //----------------------------------------------------------------------------- |
f7e3ed82 |
518 | void FpgaSendCommand(uint16_t cmd, uint16_t v) |
15c4dc5a |
519 | { |
520 | SetupSpi(SPI_FPGA_MODE); |
521 | while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete |
522 | AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // send the data |
523 | } |
524 | //----------------------------------------------------------------------------- |
525 | // Write the FPGA setup word (that determines what mode the logic is in, read |
526 | // vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to |
527 | // avoid changing this function's occurence everywhere in the source code. |
528 | //----------------------------------------------------------------------------- |
f7e3ed82 |
529 | void FpgaWriteConfWord(uint8_t v) |
15c4dc5a |
530 | { |
531 | FpgaSendCommand(FPGA_CMD_SET_CONFREG, v); |
532 | } |
533 | |
534 | //----------------------------------------------------------------------------- |
535 | // Set up the CMOS switches that mux the ADC: four switches, independently |
536 | // closable, but should only close one at a time. Not an FPGA thing, but |
537 | // the samples from the ADC always flow through the FPGA. |
538 | //----------------------------------------------------------------------------- |
f7e3ed82 |
539 | void SetAdcMuxFor(uint32_t whichGpio) |
15c4dc5a |
540 | { |
541 | AT91C_BASE_PIOA->PIO_OER = |
542 | GPIO_MUXSEL_HIPKD | |
543 | GPIO_MUXSEL_LOPKD | |
544 | GPIO_MUXSEL_LORAW | |
545 | GPIO_MUXSEL_HIRAW; |
546 | |
547 | AT91C_BASE_PIOA->PIO_PER = |
548 | GPIO_MUXSEL_HIPKD | |
549 | GPIO_MUXSEL_LOPKD | |
550 | GPIO_MUXSEL_LORAW | |
551 | GPIO_MUXSEL_HIRAW; |
552 | |
553 | LOW(GPIO_MUXSEL_HIPKD); |
554 | LOW(GPIO_MUXSEL_HIRAW); |
555 | LOW(GPIO_MUXSEL_LORAW); |
556 | LOW(GPIO_MUXSEL_LOPKD); |
557 | |
558 | HIGH(whichGpio); |
559 | } |
7838f4be |
560 | |
561 | void Fpga_print_status(void) |
562 | { |
563 | Dbprintf("Fgpa"); |
564 | if(downloaded_bitstream == FPGA_BITSTREAM_HF) Dbprintf(" mode.............HF"); |
565 | else if(downloaded_bitstream == FPGA_BITSTREAM_LF) Dbprintf(" mode.............LF"); |
566 | else Dbprintf(" mode.............%d", downloaded_bitstream); |
567 | } |