diff options
| -rw-r--r-- | configs/example/fs.py | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/configs/example/fs.py b/configs/example/fs.py index 6568f4c89..1a052e282 100644 --- a/configs/example/fs.py +++ b/configs/example/fs.py @@ -153,7 +153,14 @@ if options.caches or options.l2cache: mem_size = bm[0].mem() else: mem_size = SysConfig().mem() - test_sys.bridge.filter_ranges_a=[AddrRange(0, Addr.max)] + # For x86, we need to poke a hole for interrupt messages to get back to the + # CPU. These use a portion of the physical address space which has a + # non-zero prefix in the top nibble. Normal memory accesses have a 0 + # prefix. + if buildEnv['TARGET_ISA'] == 'x86': + test_sys.bridge.filter_ranges_a=[AddrRange(0, Addr.max >> 4)] + else: + test_sys.bridge.filter_ranges_a=[AddrRange(0, Addr.max)] test_sys.bridge.filter_ranges_b=[AddrRange(mem_size)] test_sys.iocache = IOCache(addr_range=mem_size) test_sys.iocache.cpu_side = test_sys.iobus.port |