move firmware to address 0x0 to test microwatt xics.bin

diff --git a/src/ls2.py b/src/ls2.py
index 9f20828a618aed0688e36f091c54b7f22caac691..9899ec24f5757713f7e5927a6c709a29f93881ae 100644 (file)
--- a/src/ls2.py
+++ b/src/ls2.py
@@ -447,7 +447,7 @@ class DDR3SoC(SoC, Elaboratable):
 
         # additional SRAM at address if DRAM is not also at 0x0
         # (TODO, check Flash, and HyperRAM as well)
-        if ddr_pins is None or ddr_addr != 0x0:
+        if (ddr_pins is None or ddr_addr != 0x0) and fw_addr != 0:
             print ("SRAM 0x8000 at address 0x0")
             sram_width = 32
             self.sram = SRAMPeripheral(size=0x8000,
@@ -752,7 +752,7 @@ def build_platform(fpga, firmware):
     # select a firmware address
     fw_addr = None
     if firmware is not None:
-        fw_addr = 0xff00_0000 # firmware at HI address, now
+        fw_addr = 0x00000000 # firmware at HI address, now
 
     print ("fpga", fpga, "firmware", firmware)