Temp fix to work with F4 up to 64k of flash, changed chip detection

Can debug with up to 64k flash on the F4

gdbserver/gdb-server.c

@@ -1,5 +1,5 @@
 /* -*- tab-width:8 -*- */
-
+#define DEBUG 1
 /*
  Copyright (C)  2011 Peter Zotov <whitequark@whitequark.org>
  Use of this source code is governed by a BSD-style
@@ -49,6 +49,7 @@ struct chip_params {
 	  0x100000,   0x20000, 0x20000, 0x1fff0000, 0x7800  }, // table 1, pm0059
 	{ 0x412, "F1 Low-density device", 0x1ffff7e0,
 	  0x8000,   0x400, 0x2800,  0x1ffff000, 0x800  }, // table 1, pm0063
+	  /*No flash size register? page size is variable */
 	{ 0x413, "F4 device", 0x1FFF7A10,
 	  0x100000,   0x4000, 0x30000,  0x1fff0000, 0x7800  }, // table 1, pm0081
 	{ 0x414, "F1 High-density device", 0x1ffff7e0,
@@ -176,11 +177,16 @@ int main(int argc, char** argv) {
 
 	FLASH_PAGE = params->flash_pagesize;
 
+	//sl->flash_pgsz=0x4000;
+	//sl->flash_size=0x100000;
+
 	uint32_t flash_size;
 
 	stlink_read_mem32(sl, params->flash_size_reg, 4);
 	flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
 
+	//flash_size=0x100000;
+
 	printf("Flash size is %d KiB.\n", flash_size);
 	// memory map is in 1k blocks.
 	current_memory_map = make_memory_map(params, flash_size * 0x400);
@@ -531,6 +537,7 @@ static int flash_go(stlink_t *sl) {
 			printf("flash_do: page %08x\n", page);
 			#endif
 
+			//todo:write flash already does erase so why is this here?
 			stlink_erase_flash_page(sl, page);
 
 			if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),