X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/28b9facceaea4d2d4cb66ed240300157be42bcdc..0fa01ec7da07559ab8ebbad1e4e9ec3ef2d85809:/armsrc/start.c

diff --git a/armsrc/start.c b/armsrc/start.c
index d7332bda..f1e58ab0 100644
--- a/armsrc/start.c
+++ b/armsrc/start.c
@@ -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();
 }