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soc: allow regions that are not a power of 2 

Align region to its power of 2, not the region size itself.
This commit is contained in:
Arne Jansen 2022-12-20 10:12:27 +01:00
parent d504639f1c
commit 72ec359f52
1 changed files with 3 additions and 2 deletions
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5
litex/soc/integration/soc.py
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@ -254,12 +254,13 @@ class SoCBusHandler(LiteXModule):
search_regions = {"main": SoCRegion(origin=0x00000000, size=2**self.address_width-1)} search_regions = {"main": SoCRegion(origin=0x00000000, size=2**self.address_width-1)}
# Iterate on Search_Regions to find a Candidate. # Iterate on Search_Regions to find a Candidate.
size_pow2 = 2**log2_int(size, False)
for _, search_region in search_regions.items(): for _, search_region in search_regions.items():
origin = search_region.origin origin = search_region.origin
while (origin + size) < (search_region.origin + search_region.size_pow2): while (origin + size) < (search_region.origin + search_region.size_pow2):
# Align Origin on Size. # Align Origin on Size.
if (origin%size): if (origin%size_pow2):
origin += (origin - origin%size) origin += (origin - origin%size_pow2)
continue continue
# Create a Candidate. # Create a Candidate.
candidate = SoCRegion(origin=origin, size=size, cached=cached) candidate = SoCRegion(origin=origin, size=size, cached=cached)