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export: add define of CSR_BASE if not already defined and use it for CSRs definitions/accesses. 

This will allow more flexibility when integrating standalone cores.
This commit is contained in:
Florent Kermarrec 2020-05-13 15:52:09 +02:00
parent 9f941138d2
commit 748ef1add3
1 changed files with 11 additions and 7 deletions
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18
litex/soc/integration/export.py
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@ -149,7 +149,7 @@ def _get_rw_functions_c(reg_name, reg_base, nwords, busword, alignment, read_onl
addr_str = "CSR_{}_ADDR".format(reg_name.upper())
size_str = "CSR_{}_SIZE".format(reg_name.upper())
r += "#define {} {}L\n".format(addr_str, hex(reg_base))
r += "#define {} (CSR_BASE + {}L)\n".format(addr_str, hex(reg_base))
r += "#define {} {}\n".format(size_str, nwords)
size = nwords*busword//8
@ -169,13 +169,13 @@ def _get_rw_functions_c(reg_name, reg_base, nwords, busword, alignment, read_onl
if with_access_functions:
r += "static inline {} {}_read(void) {{\n".format(ctype, reg_name)
if nwords > 1:
r += "\t{} r = csr_read_simple({}L);\n".format(ctype, hex(reg_base))
r += "\t{} r = csr_read_simple(CSR_BASE + {}L);\n".format(ctype, hex(reg_base))
for sub in range(1, nwords):
r += "\tr <<= {};\n".format(busword)
r += "\tr |= csr_read_simple({}L);\n".format(hex(reg_base+sub*stride))
r += "\tr |= csr_read_simple(CSR_BASE + {}L);\n".format(hex(reg_base+sub*stride))
r += "\treturn r;\n}\n"
else:
r += "\treturn csr_read_simple({}L);\n}}\n".format(hex(reg_base))
r += "\treturn csr_read_simple(CSR_BASE + {}L);\n}}\n".format(hex(reg_base))
if not read_only:
r += "static inline void {}_write({} v) {{\n".format(reg_name, ctype)
@ -185,7 +185,7 @@ def _get_rw_functions_c(reg_name, reg_base, nwords, busword, alignment, read_onl
v_shift = "v >> {}".format(shift)
else:
v_shift = "v"
r += "\tcsr_write_simple({}, {}L);\n".format(v_shift, hex(reg_base+sub*stride))
r += "\tcsr_write_simple({}, CSR_BASE + {}L);\n".format(v_shift, hex(reg_base+sub*stride))
r += "}\n"
return r
@ -204,10 +204,14 @@ def get_csr_header(regions, constants, with_access_functions=True):
r += "#else /* ! CSR_ACCESSORS_DEFINED */\n"
r += "#include <hw/common.h>\n"
r += "#endif /* ! CSR_ACCESSORS_DEFINED */\n"
csr_base = regions[next(iter(regions))].origin
r += "#ifndef CSR_BASE\n"
r += "#define CSR_BASE {}L\n".format(hex(csr_base))
r += "#endif\n"
for name, region in regions.items():
origin = region.origin
origin = region.origin - csr_base
r += "\n/* "+name+" */\n"
r += "#define CSR_"+name.upper()+"_BASE "+hex(origin)+"L\n"
r += "#define CSR_"+name.upper()+"_BASE (CSR_BASE + "+hex(origin)+"L)\n"
if not isinstance(region.obj, Memory):
for csr in region.obj:
nr = (csr.size + region.busword - 1)//region.busword