//-----------------------------------------------------------------------------
// Jonathan Westhues, April 2006
+// iZsh <izsh at fail0verflow.com>, 2014
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// Routines to load the FPGA image, and then to configure the FPGA's major
// mode once it is configured.
//-----------------------------------------------------------------------------
-
#include "proxmark3.h"
#include "apps.h"
#include "util.h"
AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1);
// 8 bits per transfer, no loopback, MSB first, 1 transfer per sync
- // pulse, no output sync, start on positive-going edge of sync
- AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) |
- AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
+ // pulse, no output sync
+ AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
// clock comes from TK pin, no clock output, outputs change on falling
- // edge of TK, start on rising edge of TF
- AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) |
- SSC_CLOCK_MODE_START(5);
+ // edge of TK, sample on rising edge of TK, start on positive-going edge of sync
+ AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
// tx framing is the same as the rx framing
AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR;
// ourselves, not to another buffer). The stuff to manipulate those buffers
// is in apps.h, because it should be inlined, for speed.
//-----------------------------------------------------------------------------
-void FpgaSetupSscDma(uint8_t *buf, int len)
+bool FpgaSetupSscDma(uint8_t *buf, int len)
{
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
-
- AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf;
- AT91C_BASE_PDC_SSC->PDC_RCR = len;
- AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf;
- AT91C_BASE_PDC_SSC->PDC_RNCR = len;
-
- if (buf != NULL) {
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;
- }
+ 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_RCR = len; // transfer this many bytes
+ 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;
}
static void DownloadFPGA_byte(unsigned char w)
static char *bitparse_headers_start;
static char *bitparse_bitstream_end;
-static int bitparse_initialized;
+static int bitparse_initialized = 0;
/* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence
* 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01
* After that the format is 1 byte section type (ASCII character), 2 byte length
// Find out which FPGA image format is stored in flash, then call DownloadFPGA
// with the right parameters to download the image
//-----------------------------------------------------------------------------
-extern char _binary_fpga_bit_start, _binary_fpga_bit_end;
-void FpgaDownloadAndGo(void)
+extern char _binary_fpga_lf_bit_start, _binary_fpga_lf_bit_end;
+extern char _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end;
+void FpgaDownloadAndGo(int bitstream_version)
{
+ void *bit_start;
+ void *bit_end;
+
+ // check whether or not the bitstream is already loaded
+ if (FpgaGatherBitstreamVersion() == bitstream_version)
+ return;
+
+ if (bitstream_version == FPGA_BITSTREAM_LF) {
+ bit_start = &_binary_fpga_lf_bit_start;
+ bit_end = &_binary_fpga_lf_bit_end;
+ } else if (bitstream_version == FPGA_BITSTREAM_HF) {
+ bit_start = &_binary_fpga_hf_bit_start;
+ bit_end = &_binary_fpga_hf_bit_end;
+ } else
+ return;
/* Check for the new flash image format: Should have the .bit file at &_binary_fpga_bit_start
*/
- if(bitparse_init(&_binary_fpga_bit_start, &_binary_fpga_bit_end)) {
+ if(bitparse_init(bit_start, bit_end)) {
/* Successfully initialized the .bit parser. Find the 'e' section and
* send its contents to the FPGA.
*/
DownloadFPGA((char*)0x102000, 10524*4, 1);
}
+int FpgaGatherBitstreamVersion()
+{
+ char temp[256];
+ FpgaGatherVersion(temp, sizeof (temp));
+ if (!memcmp("LF", temp, 2))
+ return FPGA_BITSTREAM_LF;
+ else if (!memcmp("HF", temp, 2))
+ return FPGA_BITSTREAM_HF;
+ return FPGA_BITSTREAM_ERR;
+}
+
void FpgaGatherVersion(char *dst, int len)
{
char *fpga_info;
if(!bitparse_find_section('e', &fpga_info, &fpga_info_len)) {
strncat(dst, "FPGA image: legacy image without version information", len-1);
} else {
- strncat(dst, "FPGA image built", len-1);
/* USB packets only have 48 bytes data payload, so be terse */
-#if 0
if(bitparse_find_section('a', &fpga_info, &fpga_info_len) && fpga_info[fpga_info_len-1] == 0 ) {
- strncat(dst, " from ", len-1);
- strncat(dst, fpga_info, len-1);
+ if (!memcmp("fpga_lf", fpga_info, 7))
+ strncat(dst, "LF ", len-1);
+ else if (!memcmp("fpga_hf", fpga_info, 7))
+ strncat(dst, "HF ", len-1);
}
+ strncat(dst, "FPGA image built", len-1);
+#if 0
if(bitparse_find_section('b', &fpga_info, &fpga_info_len) && fpga_info[fpga_info_len-1] == 0 ) {
strncat(dst, " for ", len-1);
strncat(dst, fpga_info, len-1);
projects / proxmark3-svn / blobdiff