// Routines to load the FPGA image, and then to configure the FPGA's major
// mode once it is configured.
//-----------------------------------------------------------------------------
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include "fpgaloader.h"
#include "proxmark3.h"
-#include "apps.h"
#include "util.h"
#include "string.h"
+#include "BigBuf.h"
+#include "zlib.h"
+
+extern void Dbprintf(const char *fmt, ...);
// remember which version of the bitstream we have already downloaded to the FPGA
static int downloaded_bitstream = FPGA_BITSTREAM_ERR;
static uint8_t *fpga_image_ptr = NULL;
static const uint8_t _bitparse_fixed_header[] = {0x00, 0x09, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x00, 0x00, 0x01};
-static const uint8_t _gzip_header[] = {0x1f, 0x8b, 0x08}; // including compression method 0x08 (deflate)
-#define GZIP_HEADER_SIZE sizeof(_gzip_header)
#define FPGA_BITSTREAM_FIXED_HEADER_SIZE sizeof(_bitparse_fixed_header)
+#define OUTPUT_BUFFER_LEN 80
//-----------------------------------------------------------------------------
// Set up the Serial Peripheral Interface as master
}
-void reset_fpga_stream(uint8_t *image_start)
+uint8_t get_from_fpga_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
- fpga_image_ptr = image_start;
+ if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data
+ compressed_fpga_stream->next_out = output_buffer;
+ 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 && res != Z_STREAM_END) {
+ Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg);
+ // }
+ }
+
+ Dbprintf("get_from_fpga_stream() returns %02x", *fpga_image_ptr);
+ return *fpga_image_ptr++;
}
-uint8_t get_from_fpga_stream(void)
+static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size)
{
- return *fpga_image_ptr++;
+ Dbprintf("zlib requested %d bytes", items*size);
+ return BigBuf_malloc(items*size);
+}
+
+
+static void fpga_inflate_free(voidpf opaque, voidpf address)
+{
+ Dbprintf("zlib wants to free memory");
+ BigBuf_free_keep_EM();
+}
+
+
+void init_fpga_inflate(z_streamp compressed_fpga_stream, uint8_t *fpga_image_start, uint32_t fpga_image_size, uint8_t *output_buffer)
+{
+ // initialize z_stream structure for inflate:
+ compressed_fpga_stream->next_in = fpga_image_start;
+ compressed_fpga_stream->avail_in = fpga_image_size;
+ compressed_fpga_stream->next_out = output_buffer;
+ compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
+ compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
+ compressed_fpga_stream->zfree = &fpga_inflate_free;
+
+ // initialize inflate to automatically detect header:
+ int res = inflateInit2(compressed_fpga_stream, 15+32);
+
+ fpga_image_ptr = output_buffer;
+
+ Dbprintf("InflateInit returned %d", res);
+ Dbprintf("fpga_image_ptr pointing at %02x %02x %02x %02x", fpga_image_ptr[0], fpga_image_ptr[1], fpga_image_ptr[2], fpga_image_ptr[3]);
+ Dbprintf("zstream->next_in pointing at %02x %02x %02x %02x", compressed_fpga_stream->next_in[0], compressed_fpga_stream->next_in[1], compressed_fpga_stream->next_in[2], compressed_fpga_stream->next_in[3]);
+}
+
+
+bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+{
+ uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
+ uint8_t *fpga_image_start;
+ uint32_t fpga_image_size;
+
+ if (bitstream_version == FPGA_BITSTREAM_LF) {
+ fpga_image_start = &_binary_fpga_lf_bit_start;
+ fpga_image_size = (uint32_t)&_binary_fpga_lf_bit_end - (uint32_t)&_binary_fpga_lf_bit_start;
+ } else if (bitstream_version == FPGA_BITSTREAM_HF) {
+ fpga_image_start = &_binary_fpga_hf_bit_start;
+ fpga_image_size = (uint32_t)&_binary_fpga_hf_bit_end - (uint32_t)&_binary_fpga_hf_bit_start;
+ } else {
+ return false;
+ }
+
+ init_fpga_inflate(compressed_fpga_stream, fpga_image_start, fpga_image_size, output_buffer);
+
+ for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
+ header[i] = get_from_fpga_stream(compressed_fpga_stream, output_buffer);
+ }
+
+ // Check for a valid .bit file (starts with _bitparse_fixed_header)
+ if(memcmp(_bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
+ return true;
+ } else {
+ return false;
+ }
}
}
// Download the fpga image starting at current stream position with length FpgaImageLen bytes
-static void DownloadFPGA(int FpgaImageLen)
+static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
+ Dbprintf("Would have loaded FPGA");
+ return;
+
int i=0;
AT91C_BASE_PIOA->PIO_OER = GPIO_FPGA_ON;
}
while(FpgaImageLen-->0) {
- DownloadFPGA_byte(get_from_fpga_stream());
+ DownloadFPGA_byte(get_from_fpga_stream(compressed_fpga_stream, output_buffer));
}
// continue to clock FPGA until ready signal goes high
* (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
* length.
*/
-int bitparse_find_section(char section_name, unsigned int *section_length)
+int bitparse_find_section(char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
int result = 0;
#define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section
uint16_t numbytes = 0;
while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
- char current_name = get_from_fpga_stream();
+ char current_name = get_from_fpga_stream(compressed_fpga_stream, output_buffer);
numbytes++;
unsigned int current_length = 0;
if(current_name < 'a' || current_name > 'e') {
switch(current_name) {
case 'e':
/* Four byte length field */
- current_length += get_from_fpga_stream() << 24;
- current_length += get_from_fpga_stream() << 16;
+ current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 24;
+ current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 16;
numbytes += 2;
default: /* Fall through, two byte length field */
- current_length += get_from_fpga_stream() << 8;
- current_length += get_from_fpga_stream() << 0;
+ current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 8;
+ current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 0;
numbytes += 2;
}
}
for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
- get_from_fpga_stream();
+ get_from_fpga_stream(compressed_fpga_stream, output_buffer);
numbytes++;
}
}
return result;
}
-void init_fpga_inflate(void)
-{
- // initialize zlib for inflate
-}
-
//-----------------------------------------------------------------------------
// Find out which FPGA image format is stored in flash, then call DownloadFPGA
//-----------------------------------------------------------------------------
void FpgaDownloadAndGo(int bitstream_version)
{
- uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
+ z_stream compressed_fpga_stream;
+ uint8_t output_buffer[OUTPUT_BUFFER_LEN];
// check whether or not the bitstream is already loaded
if (downloaded_bitstream == bitstream_version)
return;
- if (bitstream_version == FPGA_BITSTREAM_LF) {
- reset_fpga_stream(&_binary_fpga_lf_bit_start);
- } else if (bitstream_version == FPGA_BITSTREAM_HF) {
- reset_fpga_stream(&_binary_fpga_hf_bit_start);
- } else
+ if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
return;
-
- uint16_t i = 0;
- for (; i < GZIP_HEADER_SIZE; i++) {
- header[i] = get_from_fpga_stream();
}
- // Check for compressed new flash image format (starts with gzip header)
- if(memcmp(_gzip_header, header, GZIP_HEADER_SIZE) == 0) {
- init_fpga_inflate();
- }
-
- for (; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
- header[i] = get_from_fpga_stream();
- }
-
- // Check for the new flash image format: Should have the .bit file at &_binary_fpga_bit_start
- if(memcmp(_bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
- unsigned int bitstream_length;
- if(bitparse_find_section('e', &bitstream_length)) {
- DownloadFPGA(bitstream_length);
- downloaded_bitstream = bitstream_version;
- return; /* All done */
- }
+ unsigned int bitstream_length;
+ if(bitparse_find_section('e', &bitstream_length, &compressed_fpga_stream, output_buffer)) {
+ DownloadFPGA(bitstream_length, &compressed_fpga_stream, output_buffer);
+ downloaded_bitstream = bitstream_version;
+ return; /* All done */
}
}
-int FpgaGatherBitstreamVersion()
-{
- return downloaded_bitstream;
-}
void FpgaGatherVersion(int bitstream_version, char *dst, int len)
{
unsigned int fpga_info_len;
char tempstr[40];
+ z_stream compressed_fpga_stream;
+ uint8_t output_buffer[OUTPUT_BUFFER_LEN];
dst[0] = '\0';
- if (bitstream_version == FPGA_BITSTREAM_LF) {
- reset_fpga_stream(&_binary_fpga_lf_bit_start);
- } else if (bitstream_version == FPGA_BITSTREAM_HF) {
- reset_fpga_stream(&_binary_fpga_hf_bit_start);
- } else
+ if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
return;
-
-
- for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
- get_from_fpga_stream();
}
- if(bitparse_find_section('a', &fpga_info_len)) {
+ if(bitparse_find_section('a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
+ char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
if (i < sizeof(tempstr)) {
tempstr[i] = c;
}
strncat(dst, "HF ", len-1);
}
strncat(dst, "FPGA image built", len-1);
- if(bitparse_find_section('b', &fpga_info_len)) {
+ if(bitparse_find_section('b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
strncat(dst, " for ", len-1);
for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
+ char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
if (i < sizeof(tempstr)) {
tempstr[i] = c;
}
}
strncat(dst, tempstr, len-1);
}
- if(bitparse_find_section('c', &fpga_info_len)) {
+ if(bitparse_find_section('c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
strncat(dst, " on ", len-1);
for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
+ char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
if (i < sizeof(tempstr)) {
tempstr[i] = c;
}
}
strncat(dst, tempstr, len-1);
}
- if(bitparse_find_section('d', &fpga_info_len)) {
+ if(bitparse_find_section('d', &fpga_info_len, &compressed_fpga_stream, output_buffer)) {
strncat(dst, " at ", len-1);
for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
+ char c = (char)get_from_fpga_stream(&compressed_fpga_stream, output_buffer);
if (i < sizeof(tempstr)) {
tempstr[i] = c;
}
}
}
+
//-----------------------------------------------------------------------------
// Send a 16 bit command/data pair to the FPGA.
// The bit format is: C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
projects / proxmark3-svn / blobdiff