Merge branch 'increase-runtime-size'

closes #250

* increase-runtime-size:
  flash: grow runtime limit to 512 kB
  RELEASE_NOTES: update
  flash storage: move to flash + 0x70000

RELEASE_NOTES.rst

@@ -1,9 +1,12 @@
 Release notes
 =============
 
-1.0
----
+1.0 (unreleased)
+----------------
 
 * First release
 * Experiments (your code) should use ``from artiq.experiment import *``
   (and not ``from artiq import *`` as previously)
+* Core device flash storage has moved due to increased runtime size.
+  This requires reflashing the runtime and the flash storage filesystem image
+  or erase and rewrite its entries.

artiq/frontend/artiq_flash.py

@@ -58,7 +58,7 @@ def main():
             "bitstream": 0x000000,
             "bios": 0xaf0000,
             "runtime": 0xb00000,
-            "storage": 0xb40000,
+            "storage": 0xb80000,
         },
         "pipistrello": {
             "chip": "xc6slx45",
@@ -66,7 +66,7 @@ def main():
             "bitstream": 0x000000,
             "bios": 0x170000,
             "runtime": 0x180000,
-            "storage": 0x1c0000,
+            "storage": 0x200000,
         },
     }[opts.target]
 

artiq/runtime/flash_storage.c

@@ -14,7 +14,7 @@
 
 #if (defined CSR_SPIFLASH_BASE && defined CONFIG_SPIFLASH_PAGE_SIZE)
 
-#define STORAGE_ADDRESS ((char *)(FLASH_BOOT_ADDRESS + 256*1024))
+#define STORAGE_ADDRESS ((char *)(FLASH_BOOT_ADDRESS + 0x80000 /* max runtime size */))
 #define STORAGE_SIZE    CONFIG_SPIFLASH_SECTOR_SIZE
 #define END_MARKER      (0xFFFFFFFF)