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soc/integration/export: Add LITEX_CSR_ACCESS_FUNCTIONS/LITEX_CSR_FIELDS_ACCESS_FUNCTIONS defines to allow user to disable access functions. 

-DLITEX_CSR_ACCESS_FUNCTIONS=0 to disable CSR access functions.
-DLITEX_CSR_FIELDS_ACCESS_FUNCTIONS=0 to disable CSR access functions.

User can also avoid access function generation on get_csr_header call with:
- with_access_functions=False
- with_fields_access_functions=False
This commit is contained in:
Florent Kermarrec 2024-05-21 10:17:13 +02:00
parent 5b297f5601
commit 05030990b2
1 changed files with 14 additions and 0 deletions
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14
litex/soc/integration/export.py
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@ -412,17 +412,31 @@ def get_csr_header(regions, constants, csr_base=None, with_csr_base_define=True,
if with_access_functions: if with_access_functions:
r += "\n" r += "\n"
r += generated_separator("//", "CSR Registers Access Functions.") r += generated_separator("//", "CSR Registers Access Functions.")
r += "\n"
r += "#ifndef LITEX_CSR_ACCESS_FUNCTIONS\n"
r += "#define LITEX_CSR_ACCESS_FUNCTIONS 1\n"
r += "#endif\n"
r += "\n"
r += "#if LITEX_CSR_ACCESS_FUNCTIONS\n"
for name, region in regions.items(): for name, region in regions.items():
origin = region.origin - _csr_base origin = region.origin - _csr_base
r += _generate_csr_region_access_functions_c(name, region, origin, alignment, csr_base, with_csr_base_define) r += _generate_csr_region_access_functions_c(name, region, origin, alignment, csr_base, with_csr_base_define)
r += "#endif /* LITEX_CSR_ACCESS_FUNCTIONS */\n"
# CSR Registers Field Access Functions. # CSR Registers Field Access Functions.
if with_fields_access_functions: if with_fields_access_functions:
r += "\n" r += "\n"
r += generated_separator("//", "CSR Registers Field Access Functions.") r += generated_separator("//", "CSR Registers Field Access Functions.")
r += "\n"
r += "#ifndef LITEX_CSR_FIELDS_ACCESS_FUNCTIONS\n"
r += "#define LITEX_CSR_FIELDS_ACCESS_FUNCTIONS 1\n"
r += "#endif\n"
r += "\n"
r += "#if LITEX_CSR_FIELDS_ACCESS_FUNCTIONS\n"
for name, region in regions.items(): for name, region in regions.items():
origin = region.origin - _csr_base origin = region.origin - _csr_base
r += _generate_csr_fields_access_functions_c(name, region, origin, alignment, csr_base, with_csr_base_define) r += _generate_csr_fields_access_functions_c(name, region, origin, alignment, csr_base, with_csr_base_define)
r += "#endif /* LITEX_CSR_FIELDS_ACCESS_FUNCTIONS */\n"
r += "\n#endif /* ! __GENERATED_CSR_H */\n" r += "\n#endif /* ! __GENERATED_CSR_H */\n"
return r return r