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soc/cpuif: add with_access_functions parameter 

When don't necessary need access functions in our csr.h (for example with an X86 CPU)
This commit is contained in:
Florent Kermarrec 2015-04-17 13:26:38 +02:00
parent 958f149992
commit 9666629c4f
1 changed files with 25 additions and 22 deletions
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47
misoclib/soc/cpuif.py
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@ -34,7 +34,7 @@ def get_mem_header(regions, flash_boot_address):
return r
def _get_rw_functions(reg_name, reg_base, nwords, busword, read_only):
def _get_rw_functions(reg_name, reg_base, nwords, busword, read_only, with_access_functions):
r = ""
r += "#define CSR_"+reg_name.upper()+"_ADDR "+hex(reg_base)+"\n"
@ -52,30 +52,33 @@ def _get_rw_functions(reg_name, reg_base, nwords, busword, read_only):
else:
ctype = "unsigned char"
r += "static inline "+ctype+" "+reg_name+"_read(void) {\n"
if size > 1:
r += "\t"+ctype+" r = MMPTR("+hex(reg_base)+");\n"
for byte in range(1, nwords):
r += "\tr <<= "+str(busword)+";\n\tr |= MMPTR("+hex(reg_base+4*byte)+");\n"
r += "\treturn r;\n}\n"
else:
r += "\treturn MMPTR("+hex(reg_base)+");\n}\n"
if with_access_functions:
r += "static inline "+ctype+" "+reg_name+"_read(void) {\n"
if size > 1:
r += "\t"+ctype+" r = MMPTR("+hex(reg_base)+");\n"
for byte in range(1, nwords):
r += "\tr <<= "+str(busword)+";\n\tr |= MMPTR("+hex(reg_base+4*byte)+");\n"
r += "\treturn r;\n}\n"
else:
r += "\treturn MMPTR("+hex(reg_base)+");\n}\n"
if not read_only:
r += "static inline void "+reg_name+"_write("+ctype+" value) {\n"
for word in range(nwords):
shift = (nwords-word-1)*busword
if shift:
value_shifted = "value >> "+str(shift)
else:
value_shifted = "value"
r += "\tMMPTR("+hex(reg_base+4*word)+") = "+value_shifted+";\n"
r += "}\n"
if not read_only:
r += "static inline void "+reg_name+"_write("+ctype+" value) {\n"
for word in range(nwords):
shift = (nwords-word-1)*busword
if shift:
value_shifted = "value >> "+str(shift)
else:
value_shifted = "value"
r += "\tMMPTR("+hex(reg_base+4*word)+") = "+value_shifted+";\n"
r += "}\n"
return r
def get_csr_header(regions, constants):
r = "#ifndef __GENERATED_CSR_H\n#define __GENERATED_CSR_H\n#include <hw/common.h>\n"
def get_csr_header(regions, constants, with_access_functions=True):
r = "#ifndef __GENERATED_CSR_H\n#define __GENERATED_CSR_H\n"
if with_access_functions:
r += "#include <hw/common.h>\n"
for name, origin, busword, obj in regions:
if isinstance(obj, Memory):
r += "#define CSR_"+name.upper()+"_BASE "+hex(origin)+"\n"
@ -84,7 +87,7 @@ def get_csr_header(regions, constants):
r += "#define CSR_"+name.upper()+"_BASE "+hex(origin)+"\n"
for csr in obj:
nr = (csr.size + busword - 1)//busword
r += _get_rw_functions(name + "_" + csr.name, origin, nr, busword, isinstance(csr, CSRStatus))
r += _get_rw_functions(name + "_" + csr.name, origin, nr, busword, isinstance(csr, CSRStatus), with_access_functions)
origin += 4*nr
r += "\n/* constants */\n"