github/proxmark3
1
0
Fork 0
mirror of https://github.com/Proxmark/proxmark3.git synced 2025-08-19 21:03:23 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

add: compress fpga images during compile, uncompress at run time

Browse source
This commit is contained in:
pwpiwi 2015-04-15 19:16:00 +02:00
commit add4d47046
13 changed files with 1343 additions and 130 deletions
Download patch file Download diff file Expand all files Collapse all files

186
armsrc/fpgaloader.c
View file

@ -9,10 +9,18 @@
// 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;
@ -23,9 +31,8 @@ extern uint8_t _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end;
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
@ -164,15 +171,86 @@ bool FpgaSetupSscDma(uint8_t *buf, int len)
}
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;
}
}
@ -190,8 +268,11 @@ static void DownloadFPGA_byte(unsigned char w)
}
// 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;
@ -244,7 +325,7 @@ static void DownloadFPGA(int FpgaImageLen)
}
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
@ -269,13 +350,13 @@ static void DownloadFPGA(int FpgaImageLen)
* (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') {
@ -286,12 +367,12 @@ int bitparse_find_section(char section_name, unsigned int *section_length)
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;
}
@ -308,7 +389,7 @@ int bitparse_find_section(char section_name, unsigned int *section_length)
}
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++;
}
}
@ -316,11 +397,6 @@ int bitparse_find_section(char section_name, unsigned int *section_length)
return result;
}
void init_fpga_inflate(void)
{
// initialize zlib for inflate
}
//-----------------------------------------------------------------------------
// Find out which FPGA image format is stored in flash, then call DownloadFPGA
@ -328,71 +404,42 @@ void init_fpga_inflate(void)
//-----------------------------------------------------------------------------
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;
}
@ -403,30 +450,30 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len)
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;
}
@ -435,6 +482,7 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len)
}
}
//-----------------------------------------------------------------------------
// 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