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ADD: pwpiwi 's FPGA compress

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iceman1001 2015-06-25 12:22:34 +02:00
commit 9783989b40
15 changed files with 432 additions and 291 deletions
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66
armsrc/start.c
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@ -11,23 +11,75 @@
#include "proxmark3.h"
#include "apps.h"
#include "zlib.h"
#include "BigBuf.h"
static uint8_t *next_free_memory;
extern struct common_area common_area;
extern char __data_src_start__, __data_start__, __data_end__, __bss_start__, __bss_end__;
static voidpf inflate_malloc(voidpf opaque, uInt items, uInt size)
{
uint8_t *allocated_memory;
allocated_memory = next_free_memory;
next_free_memory += items*size;
return allocated_memory;
}
static void inflate_free(voidpf opaque, voidpf address)
{
// nothing to do
}
static void uncompress_data_section(void)
{
z_stream data_section;
next_free_memory = BigBuf_get_addr();
// initialize zstream structure
data_section.next_in = (uint8_t *) &__data_src_start__;
data_section.avail_in = &__data_end__ - &__data_start__; // uncompressed size. Wrong but doesn't matter.
data_section.next_out = (uint8_t *) &__data_start__;
data_section.avail_out = &__data_end__ - &__data_start__; // uncompressed size. Correct.
data_section.zalloc = &inflate_malloc;
data_section.zfree = &inflate_free;
data_section.opaque = NULL;
// initialize zlib for inflate
inflateInit2(&data_section, 15);
// uncompress data segment to RAM
inflate(&data_section, Z_FINISH);
// save the size of the compressed data section
common_area.arg1 = data_section.total_in;
}
extern char __data_start__, __data_src_start__, __data_end__, __bss_start__, __bss_end__;
void __attribute__((section(".startos"))) Vector(void)
{
/* Stack should have been set up by the bootloader */
char *src, *dst, *end;
// char *src;
char *dst, *end;
uncompress_data_section();
/* Set up (that is: clear) BSS. */
dst = &__bss_start__;
end = &__bss_end__;
while(dst < end) *dst++ = 0;
/* Set up data segment: Copy from flash to ram */
src = &__data_src_start__;
dst = &__data_start__;
end = &__data_end__;
while(dst < end) *dst++ = *src++;
// Set up data segment: Copy from flash to ram
// src = &__data_src_start__;
// dst = &__data_start__;
// end = &__data_end__;
// while(dst < end) *dst++ = *src++;
AppMain();
}